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Hard copies of documents are not controlled Document Owner: DD8 Rig Manager
ABAN Singapore Pte. Ltd.
Deep Driller 8 (DD8)
Jack-Up Mobile Offshore Drilling Unit
Health, Safety & Environment (HSE) Case
Part 2 - Facility and Operations
DD8 HSE Case ABAN-DD8-HSE Case-Part 2
Part 2 – Facility and Operations Rev 5 Revision Page
Revision Record
REV REVISION DESCRIPTION DATE
Draft Issued for rig crew review and input July 2010
Rev 0 Issued for ITS CLIENTS review and acceptance August 2010
Rev 1 Client comments incorporated August 2010
Rev 2 Gap Analysis against EDPMO MAH Regulations July 2013
Rev 3 Finalised to EDPMO – Safety Case Contents Matrix: Mobile Facility Dec 2013
Rev 4 Finalised to EDPMO – Safety Case Contents Matrix: Mobile Facility April 2014
Rev 5 Final Iteration- to EDPMO – Safety Case Contents Matrix: Mobile Facility May 2014
Document Control and Validity
The master copy of this HSE Case resides with ABAN Singapore Pte Ltd. under the custodianship of the QHSE Manager. Changes
to this document are subject to control as specified in Procedure ISM 1101.00 of ABAN Management System.
This document is valid for a maximum of four years after the last revision date. Notwithstanding this, it shall be revised as and when
necessary to reflect any significant changes to the Mobile Offshore Drilling Unit (MODU) or its Management System.
Document Approvals
By signing below, the following persons confirm that the contents of this HSE Case are valid for the subject Facility and Operations
described herein.
Copyright 2010
ABAN Singapore Pte Ltd.
DD8 HSE Case ABAN-DD8-HSE Case-Part 2
Part 2 – Facility and Operations Rev 5 Content Page
TABLE OF CONTENTS
1. INTRODUCTION ............................................................................................................................................ 1 1.1 Reference Sources ...................................................................................................................... 1 1.2 Objective .................................................................................................................................... 1 1.3 DD8 Facility Overview – ........................................................................................................... 1
2. DD8 OPERATIONS- ........................................................................................................................................ 3 2.1 General Operations .................................................................................................................... 3 2.2 Afloat Operations (reference Section 2 of DD8 Marine Operation Manual) ............................. 3 2.3 Elevating and Operations when Elevated .................................................................................. 5
3. FACILITY DESCRIPTION AND OPERATIONAL LIMITS - .................................................................. 7 3.1 Unit overview description and history of operations - ............................................................... 7 3.2 Classification, Certificates, Rules and Regulations ................................................................... 9 3.3 Unit Particulars ........................................................................................................................ 11 3.4 Operational Limits ................................................................................................................... 12 3.5 Main Structure ......................................................................................................................... 13 3.6 Loading .................................................................................................................................... 16 3.7 Environmental Limitations ...................................................................................................... 18 3.8 Power Generation - .................................................................................................................. 19 3.9 Towing Arrangement and Limiting Conditions ....................................................................... 20 3.10 Anchors .................................................................................................................................... 20 3.11 Jacking System ........................................................................................................................ 21 3.12 Skidding Systems ..................................................................................................................... 21 3.13 Major Hoisting and Lifting Equipment .................................................................................... 22 3.14 Mud System ............................................................................................................................. 25 3.15 Blow Out Prevention Equipment ............................................................................................. 26 3.16 Heating, Ventilation and Air Conditioning .............................................................................. 28 3.17 Bilge System ............................................................................................................................ 30 3.18 Deck Drains System ................................................................................................................. 30 3.19 Fixed Fire Fighting Equipment ................................................................................................ 31 3.20 Life Saving Equipment ............................................................................................................ 32 3.21 Fire and Gas Detection Systems .............................................................................................. 33 3.22 Water Maker, Sewage Treatment and Environmental Protection ............................................ 34 3.23 Communication and Instrumentation ....................................................................................... 35 3.24 Hazardous Areas, Inventory..................................................................................................... 37
4. HSE CRITICAL ELEMENTS AND PERFORMANCE STANDARDS ................................................... 39 4.1 Safety Critical Equipment Overview ....................................................................................... 39 4.2 Development and Content of SCE Performance Standards ..................................................... 39 4.3 DD8 Safety Critical Equipment (SCE) .................................................................................... 39 4.4 DD8 / Combined Operations (Drilling and Production) .......................................................... 72
5. HSE-CRITICAL FEATURES ....................................................................................................................... 73
6. TEMPORARY REFUGE ............................................................................................................................... 74
7. HSE-CRITICAL PROCEDURES AND TASKS ......................................................................................... 75 7.1 Safety Critical Procedure (Operations Procedures) ................................................................. 75 7.2 Rig-specific Procedures ........................................................................................................... 77 7.3 Maintenance Tasks .................................................................................................................. 77 7.4 Emergency Procedures and Incident Investigation Procedures ............................................... 78 7.5 Engineering Management / MODU Modification ................................................................... 78
8. REFERENCES ............................................................................................................................................... 80
Attachment A – DD8 Certification Survey Status List (example)
Attachment B – ABAN SHORE-BASE EMERGENCY RESPONSE MANUAL, BRUNEI
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1 . I N T R O D U C T I O N
Deep Driller 8 (DD8) HSE Case documents the systems in place for managing Health, Safety and
Environment (HSE) Hazards and Threats, and for recovering from accidents if they occur, during
normal operation of ABAN DD8 Jack-Up Drilling Rig. This Part 2 of the DD8 HSE Case describes
the drilling unit in terms of its structure, capacities, facilities, safety systems and normal operating
envelope.
1.1 Reference Sources
The bulk of information provided in this Part of DD8 HSE Case, is taken from the drilling
unit’s Marine Operation Manual (Ref. 1), IADC Equipment List (Ref. 2), rig drawings (Ref. 3)
and a 3rd
party rig survey during July 2010 (Ref. 4).
It is important to note and understand that the data provided in this Part 2 of DD8 HSE Case
is provided only in order to support and assist in illustrating the case for safety of DD8. The
data is not definitive and may not be the latest: reference must be made to the latest revisions
of the above documents (Refs. 1, 2, 3, 4) for definitive values of all DD8 limits and
specifications.
1.2 Objective
The purpose of describing the facility within the HSE Case is to demonstrate suitability and
capability of the drilling unit to safely fulfil expectations of planned operations, i.e. to
demonstrate the drilling unit's fitness for purpose. Information concerning the facility’s design,
equipment, and systems is provided, with additional detail for those equipment and systems
that are categorized as HSE-Critical.
1.3 DD8 Facility Overview –
DD8 is a non-propelled, 5th
generation KFELS Super B Class self-elevating independent leg
Mobile Offshore Drilling Unit (MODU), capable of drilling high temperature / high pressure
(HT/HP) oil and gas wells up to 35,000ft deep in water depths of 350ft. DD8 is registered
under the Singapore administration and classed by the American Bureau of Shipping (ABS).
Construction of DD8 was completed in the 3rd
Quarter of 2008, by Keppel FELS Ltd in
Singapore with delivery to the current (2010) owner-operator, ABAN Singapore Pte Ltd. The
triangular shaped welded steel hull is normally supported on the ocean floor by three
independent, triangular truss type legs fitted with spud can footings. The legs are elevated and
lowered independently by means of an opposed pinion, electric rack and pinion jacking system.
DD8 can safely accommodate up to 120 persons - this being the drilling unit’s POB limit, for
which it is equipped with beds and full lifesaving equipment in accordance with the
requirements of the classification society (ABS) and relevant regulatory bodies (e.g. SOLAS).
The internal volume of the hull consists of ballast and storage tanks, engine (generator) room,
compressor room, pump rooms, various machine spaces, workshops and storage spaces.
An Aluminium helideck located at the fwd end of the drilling unit is designed and built to
Class, Regulatory, IMO and CAP 437 rules to accommodate a Sikorsky S-61N or S-92 or
equivalent helicopter.
Within the confines of the Living Quarters (LQ), located on the main deck level are the crew
change rooms, laundries, gymnasium and sickbay. The second level (01 Level) of the LQ
consists of crew accommodation. The third level (02 Level) accommodates the galley, mess
room, TV room and reading room, along with the 4 external lifeboat stations. The fourth level
(03 Level) of the LQ includes the radio room, jacking control room, Offshore Installation
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Manager’s (OIM) office, conference room, helicopter briefing room and additional offices and
cabins. The emergency generator module, Fast Rescue Craft, Personnel Basket (FROG)
landing area and various antennae are located on the roof of the quarters.
Aft of the Living Quarters, the cantilever is located on two longitudinal beams, each 30ft off
center-line, allowing for skidding of the cantilever fore and aft. The drilling package is located
at the aft end of the cantilever on transverse beams - allowing for transverse skidding of the
drill floor.
The international nature of ABAN is reflected in the national cross section of those persons
manning the unit. In an effort to secure the best personnel, capable of meeting the expectations
of the company, ABAN recruits personnel from all corners of the globe to draw from the best
the world has to offer in drilling and work over operations.
Unit name : DEEP DRILLER 8
Rig type : Self-Elevating,
Cantilever, Independent Leg,
Jack-Up Mobile Offshore
Drilling Unit, Skid-Off
Capability
Unit / design / shape : KFELS
Super B Class Independent
Cantilevered Triangular Jack-Up
Unit flag : Singapore
Unit classification : American
Bureau of Shipping, A1 Self-
Elevating Drilling Unit, CDS
(2001 Rules)
IMO Certification : Yes
- Which code version : Code for
the Construction and Equipment
of Mobile Offshore Drilling
Units, 1989 with 1991
Amendments
Year of construction : Under
construction – Q1 2009
Construction yard : Keppel FELS
Limited, Singapore
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2 . D D 8 O P E R A T I O N S -
DD8 MODU is designed to safely and reliably drill, construct, test and work-over offshore oil &
gas wells, both in open water and on existing production platforms and well jackets. Its primary
designed operations are divided into General Operations, Operations when Afloat, and Operations
when Elevated (‘jacked up’, on location), as detailed in the Marine Operation Manual (Ref. 1) and
briefly described below. Note that operational limits are listed in Section 3.4.
2.1 General Operations
2.1.1 Safe Accommodation of Personnel
DD8 is designed to safely and comfortably accommodate up to 120 persons offshore,
including the core rig operation and drilling crew, client personnel and 3rd
party service
providers (see Part 3 of this HSE Case for details of people and organisation). To this end
the drilling unit operates like a self-contained ‘flotel’, with its fully equipped air-conditioned
living quarters, on board electrical power generation, potable water-making systems, food
storage, preparation and consumption facilities, sewage and waste disposal systems. The rig
is also equipped with extensive internal and external communications equipment and full life
saving equipment for 120 persons, as required by the SOLAS convention (Ref. 5).
Personnel can access and egress the drilling unit normally via helicopter or crane-lifted
personnel baskets (the ‘FROG’ system being the default for DD8). In emergencies, davit
launched life boats, overboard ladders and leg ladders provide additional means of access and
egress to the MODU.
2.1.2 Integrity Maintenance
DD8 is equipped with mechanical and electrical workshops, machine tools, hand tools and
stores for paints, consumable materials and spare parts. All basic topside maintenance can
therefore be carried out on board / at sea.
Docking of the drilling unit is generally only necessary for detailed inspections of the hull
and lower parts of the legs / spud cans (e.g. 5-yearly dry dock Class inspections), and for
structural modifications as may be required from time to time for specific assignments.
2.2 Afloat Operations (reference Section 2 of DD8 Marine Operation Manual)
DD8 is not designed to drill when floating. Operations in this mode are limited to rig moves,
which are split into 2 categories, as briefly described below. Full instructions for these
operations can be found in Section 2 of DD8
Marine Operation Manual (Ref. 1).
DD8 does not have a propulsion system, so it
must be towed between locations by suitable tug
boats (‘wet tow’) or else lifted onto a marine
transport vessel (‘dry tow’). The latter (dry tow)
is a special case, normally limited to long
distance ocean transits and not applicable for in
field moves.
The rig’s main wet towing chains and wires run
from the forward main deck, below the helideck.
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2.2.1 Field Transit
Field transit shall be considered a change in location, which required no more than 12 hours
voyage to a protected location or to a location at which the drilling unit could be elevated.
This may be a move of longer duration than 12 hours, provided that at no point during the
voyage, the drilling unit is more than 6 hours from a safe location or from a location where it
may be elevated. For field transit of extended duration, accurate weather forecast with
updates at intervals not exceeding 6 hours are required.
For installed leg length of 486ft:
Wind velocity 70.00 knots
Tip if can at hull baseline 0.00ft
KG Allowable at 16ft draft – spud cans free loading / buoyant 101.08ft / 98.62ft
Load Line Draft 16.00ft
2.2.2 Ocean Transit
Ocean transit shall be considered long moves not meeting the conditions for field transit or
short moves in areas where the weather cannot be accurately predicted.
For installed leg length of 300ft:
Wind velocity 100.00 knots
Tip if can at hull baseline 0.00ft
KG Allowable at 16ft draft – spud cans free loading / buoyant 101.08ft / 98.62ft
Load Line Draft 16.00ft
2.2.3 Moving into a fixed platform
When DD8 reaches its approximate location, it can be anchored at a safe distance before
moving into its final (drilling) position using its 4 main anchor winches and, when necessary
as a precaution, dragging its spud cans along the seabed after ‘soft pinning’.
DD8 fwd stbd anchor and anchor winch
The exact position and orientation of DD8 is measured using the drilling unit’s navigation
systems, and its position relative to fixed platforms is verified by use of a simple laser
distance monitoring tool. Once the correctness of this final position is verified, the drilling
unit commences pre-loading in preparation for elevating (see below).
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2.3 Elevating and Operations when Elevated
DD8 is designed to carry out its primary function of drilling wells when it is elevated off the
sea floor on its 3 legs. Instructions for elevating the MODU (‘Jacking up’) are contained in
Section 3 of the Marine Operation Manual , whilst operations when elevated are described,
together with limits and instructions, in Section 4 of the Marine Operation Manual (Ref. 1).
2.3.1 Preparing for drilling
After moving into position, DD8 pre-loads in accordance with the requirements of its Marine
Operation Manual , to settle its legs into the seabed and to verify that the seabed can safely
support the drilling unit’s weight when jacked up.
After jacking up (elevating) to its required elevation, the cantilever is extended out and
‘rigging-up’ for the drilling work is carried out.
2.3.2 Drilling and other well intervention operations
The primary business operations that DD8 conducts may be summarized as:
Drill and secure Wells – this involves:
o Drill floor & Derrick activities, including making up drill strings, handling down-
hole equipment, installing and testing the diverter and BOP, tripping drill pipe and
BHA’s, preparing and cementing casing / liners in hole and performing leak-off
tests, circulating out kicks, carrying out stuck pipe activities and fishing activities.
o Maintaining control over formation pressure, calculating pressures / volumes,
preparing and maintaining drilling fluids, including kill mud, curing losses.
o Well logging activities, using the drill string or wire line.
o Securing cuttings samples and cores.
o Testing the Well (third party) - drill stem tests, production tests.
Well Completion, including:
o Installing completion equipment in Well
o Perforating the Well (third party) with wire line guns or with tubing conveyed guns
o Displacing the Well
Well work over activities, e.g.:
o Pulling old tubing
o Replacing down hole equipment
o Well Stimulation
o Milling (chemical / mechanical cuts)
o Cementing repairs
o Plug and Abandon wells -
o Seal perforations
o Set cement plugs
o Cut and remove casing
Construction support activities:
o Conductor driving
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o Heavy lifting
o Mechanical workshop activities
o Utilities supply
o Temporary storage / lay-down of construction materials and equipment.
Refer to Section 3.4 for DD8 operational limits.
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3 . F A C I L I T Y D E S C R I P T I O N A N D O P E R A T I O N A L L I M I T S -
This section describes the physical attributes, equipment and operating limitations of DD8. It
includes the class, rules and regulations applicable to DD8 as well as the history of unit operations.
None of the information presented herein is intended to replace that of the source documents, i.e.
References 1, 2, 3, 4 - which remain the source of definitive data and information for DD8.
3.1 Unit overview description and history of operations -
DD8 is a non-propelled, 5th
generation KFELS Super B Class self-elevating independent leg
Mobile Offshore Drilling Unit (MODU). This type of drilling unit is commonly referred to as
a Jack-Up Drilling Rig.
Construction of DD8 was completed in the 3rd
quarter
of 2008 at the Keppel FELS Shipyard Pte. Ltd,
Singapore, for its initial owner,
Deep Driller Invest Pte Ltd. The MODU was
thereafter transferred to its current Owner/Operator,
ABAN Singapore Pte Ltd. – a wholly owned
subsidiary of ABAN Offshore Ltd (AOL). The
original intended DD8 Operator - Premium Drilling
Inc. of Houston, Texas U.S.A, was dissolved around
the time of completion of DD8. For more information
on the history of AOL and its subsidiaries, reference
may be made to
http://www.ABANoffshore.com/aboutus.aspx.
DD8’s first assignment was to India, on contract to
Hindustan Oil Exploration Co. for a two-well contract
in PY-1 Gas Field in the Cauvery basin about 100
miles south of Madras in the Bay of Bengal.
DD8 is inspected and certified by the American
Bureau of Shipping (ABS), a classification society recognized by the Flag State of the
Singapore under whose flag the MODU is registered.
The published ‘Main Dimensions / Technical Description’ of DD8 are as follows (Ref. 2):
Light ship (kips): 28,284 Estimated
Displacement at load line (kips): 34,341 Estimated
Draft at load line (deepest) (ft): 16
Overall length of unit (inc. Helideck) (ft): 310
Hull length (ft): 246
Hull depth (ft): 25
Overall length of unit (inc. Helideck) (ft): 310
Number of legs/length no /(ft): 3 x 486
Leg length available below hull (ft): 429 (with 5 ft reserve)
Type of leg : Triangular Structural Truss Cross Section,
Three Chord Leg Structure
DD8 in Keppel Fells shipyard, 2008
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Plan and Elevation drawings of DD8 are provided below/next page given
Leg spacing (centre to centre):
- Transverse (ft) : 142
- Longitudinal (ft) : 129
Independent leg or mat: Independent Leg
Spud Cans: 3
Spud can diameter/bearing area (ft)/(ft2): 52 / 2,123 per Spud Can
Spud can height (ft): 15 ft + 4 ft can tip
Spud can jetting system yes/no: Yes
- Bottom jets yes/no: Yes, 12
- Top jets yes/no: Yes, 12
Water supply from mud pumps yes/no: Yes – manifold flex hose
Pressure psi: 1440 max
Cantilever or slot: Cantilever
Skid-off yes/no: Yes
Cantilever envelope:
- Drilling envelope (ft)/(ft): 15 ft Centre line (P&S) either side
- Reach aft of transom, from/to ft/ft: 20 / 70 from aft end
- Transverse, port/stbd ft/ft : 15 / 15
Max cantilever load(Combined hook +
rotary + setback) (kips):
2,700 on Centerline at 30 ft. extension
Max rotary load kips: 2,000
Max setback load kips: 1,210
Accommodation for maximum number
personnel no.:
Min of POB
The Rig design life time:
120
20
30 years subject to regular Class
approvals.
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3.1.1 Plan Elevation drawing of DD8
DD8 Stbd Elevation View
3.2 Classification, Certificates, Rules and Regulations
3.2.1 Classification Society
The Vessel and its equipment, were built and surveyed during construction in accordance
with the American Bureau of Shipping (ABS) “Rules for Building and Classing Offshore
Mobile Drilling Units”, 2006, including all amendments to these Rules up until the date that
the Builder applied to ABS to class the Vessel. Upon completion, the Vessel bears the
following ABS class notation: A1 SELF-ELEVATING DRILLING UNIT, CDS.
Re-certification surveys are carried out regularly, covering all critical aspects of the drilling
unit structure and equipment. The frequency of these surveys varies between 1 year and 5
years, according to the system being certified – see Attachment A for a list of ABS surveys
and corresponding frequencies for DD8.
3.2.2 Insurance Society
ABAN has appointed GLND (Germanischer Lloyd Noble Denton as its Marine Warranty
Surveyor who are directly involved in our marine rig moves and based on their approvals
only the Rig is moved.
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3.2.3 Regulatory Bodies
The drilling unit is designed to meet the following Regulatory Bodies’ Requirements and
International Conventions and Codes:
`The International Maritime Organization (IMO) “Code for the Construction of Mobile
Offshore Drilling Units” 1989 Resolution A. 649(16) (generally known as the 1989 IMO
MODU Code) with 1991 Amendments
The International Convention for the Safety of Life at Sea (SOLAS) 1974, 1978 Protocol
including amendments of 1981, 1983,1988, 1989, 1990, and consolidated version 2001
The International Convention for the Prevention of Marine Pollution from Ships 1973,
1978 Protocol and later amendments (MARPOL 73/78)
The International Convention on Load Lines 1966, 1988 Protocol plus amendments
International Convention for the Prevention of Collision at Sea 1972, including
Amendments of 1981, 1987 and 1989
The International Convention of Tonnage Measurement of Ships 1969
UK Civil Aviation Authority, CAP 437 for Helicopter Deck Design only
IEEE Standard No. 45, “Recommended Practice for Electrical Installations on Shipboard
1983”
Singapore Merchants Shipping Regulation, 1997
International Telecommunications and Radio Regulations
ABS Requirements for Compliance with Cranes
“Codes of Noise Levels Onboard Ships” IMO Resolution A. 468(XII).
3.2.4 Certificates
All certificates and statement of fact covering the approval and indicating compliance with
the regulations, as listed in sections 3.2.1 and 3.2.3, are listed below. These include the Class
Certificate, Builder’s Certificate and the IMO Certificate.
All certifications are current and valid at the time of this writing.
Builder’s Certificate
International Tonnage Certificate (1969)
Mobile Offshore Unit Safety Construction Certificate
Mobile Offshore Unit Safety Equipment Certificate
Mobile Offshore Unit Safety Radio Certificate
Mobile Offshore Unit Load Line Certificate
De-ratting of Fumigation Exception Certificate
Navigation Lights Certificate
Classification Certificate for Hull and Machinery
International Oil Pollution Prevention Certificate (IOPP)
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Individual Certificates and Data Books (where necessary), for all equipment, components
and systems, which Class and Authorities require of a Drilling Unit
Authority Register of Cargo Gear for all cranes and lifting appliances, other than the
Derrick
MODU Code Certificate (ABS)
Documentation of all stores and loose inventory, including spare parts and consumables.
See also the example survey status report from ABS, included as Attachment A to this Part of
the HSE Case.
3.3 Unit Particulars
Name of Vessel: Deep Driller 8 (DD8)
I.M.O. Number: 8769080
Call Sign: 9V7568
Type of Vessel: Mobile Offshore Drilling Unit (Jack-Up)
Date of shipyard delivery: 2009
Gross Tonnage: 10,200 T
Port of Registry: Singapore
Flag: Singapore
Owner: ABAN Offshore Limited (AOL)
No: 8 & 9, Vikas Centre
S.V.Road, Santa Cruz (W)
Mumbai - 400 054
Phone : 91-22-26616016 / 26615905
Operator: ABAN Singapore Pte. Ltd.
No.6, Temasek Boulevard,
#28-01 to 05, Suntec Tower Four,
Singapore 038986.
(Phone: +65 – 65001300 to 9)
Fax: +65 - 62948540
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3.4 Operational Limits
The published operational limits of DD8 are as follows (Ref. 2):
OPERATIONAL CAPABILITIES
Max designed water depth capability (ft): 350
Outfitted max water depth capability (ft): 350
Normal min water depth capability (ft): 30
Drilling depth capability (rated) (ft): 35,000
Leg (spud can) below hull in transit (ft): 0
Max leg length permitted in tow:
- Ocean tow (wet) (ft): 300
-Ocean tow (dry) (ft): 486
- Field tow (ft): 486
Number of tugs for field tow no.: 3, Per Marine Surveyor’s Requirement
Associated min bollard pull per tug lt: Per Marine Surveyor’s Requirement
Anti-roll system yes/no: No
Maximum preload reaction per leg (kips): 15,450
Bearing pressure at max preload (lb/ft2): 10,140
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3.5 Main Structure
3.5.1 Hull & Legs
The rig consists of a modified triangular hull with three triangular truss legs; each fitted with
a spud can at the lower end. The welded steel hull is 246ft long, 218ft wide and 25ft in
depth, having a load line displacement of 34,341kips.
The three legs are spaced with the forward leg on the center line of the vessel and the two aft
legs 129ft aft of the forward leg and 71ft outboard of the vessel center line. The spud cans,
which form the lower part of the legs, are circular having a diameter of 52.42ft.
The total leg length, including spud can, is 486ft. Cathodic protection is provided by
sacrificial anodes on the legs and spud cans.
Thrusters yes/no: No
VARIABLE LOAD (VL) CAPACITY
Transit VL capacity (kips): 5,000 (inclusive of set back load)
Drilling VL capacity (kips): 7,510
Survival VL capacity (kips): 5,510
Jacking VL capacity (kips): 5,000
Cantilever pipe rack capacity (kips): 800
ENVIRONMENTAL LIMITS
Transit:
- Max. wave height (ft): N/A
- Max. wave period (sec): 11
- Max. wind velocity knots: 70
- Max. current velocity knots: N/A
- Max. heave (ft): 12
- Max. pitch (single amplitude) degrees: 6 deg single amplitude, Per Marine
Operations Manual, Fig 2.14, and Critical
Motions
- Max. roll (single amplitude) degrees: 6 deg single amplitude
Working Water Depth (ft): 25- 350
Drilling:
- Air gap (below bottom main hull) (ft): 36
- Max. wave height (ft): 40
- Max. wave period (sec): 14
- Max. wind velocity (knots): 70
- Max. current velocity (knots): 1.0 Surface
- Penetration Assumed (ft): 17.5
Survival:
- Air gap (below bottom main hull) (ft): 50
- Max. wave height (ft): 48
- Max. wave period (sec): 14.0
- Max. wind velocity (knots): 100
- Max. current velocity (knots): 1.0 Surface
- Penetration Assumed (ft): 17.5
Working Water Depth (ft): 250
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3.5.2 Cantilever Substructure
The cantilever beams, sub base and sub structure are welded structures. The cantilever sits
on two longitudinal steel beams 30ft either side of the centerline. Hydraulic skidding units
allow the rotary table to extend a maximum distance of 70ft aft of the stern when elevated.
The beams are supported at the transom on load bearing pads. This allows the cantilever to
be moved easily and yet provides vertical support at the optimum location while drilling.
The sub base is attached to the upper flanges of the cantilever beams. The sub base includes
two transverse beams, which support the drill floor and derrick. Hydraulic cylinders
facilitate transverse skidding of the substructure, drill floor and derrick 15ft port or 15ft to
starboard of the transverse beam centerline.
The published ‘Main Dimensions / Technical Description’ of DD8 are as follows (Ref. 2):
Maximum Dist. Of Center of Well over Aft Shell at Fr. 38
(Transom)
21.34 m (70.00 ft)
Center to Center of Cantilever Beams 18.29 m (60.00 ft)
Height of Bottom of Cantilever above Vessel Baseline 8.17 m (26.79 ft)
Height of Substructure (above Main Deck at C.L.) 9.66 m (31.70 ft)
Height of Pipe Rack Deck (above Main Deck at C.L.) 8.62 m (28.27 ft)
Length of Pipe Rack Deck 20.41 m (66.97 ft)
Width of Pipe Rack Deck 19.20 m (63.00 ft)
Travel Fore and Aft 27.58 m (90.50 ft)
3.5.3 Drill Floor
The published ‘Main Dimensions / Technical Description’ of DD8 are as follows (Ref. 2):
Length 20.81 m (68.29 ft)
Breadth 13.56 m (44.50 ft)
Height above main deck at C.L. 11.70 m (38.40 ft)
Derrick Base 10.97 m x10.97 m (36 ft x 36 ft)
Travel Port and Stbd either side of C.L. 4.57 m (15.00 ft)
3.5.4 Living Quarters (Accommodation Unit)
DD8 Living Quarters (LQ) is a 3-storey integrated steel Accommodation Unit with 3 wings
(Port, Starboard and Aft), containing all the facilities of a small hotel as well as command
and control functions for the entire rig. It is designed to accommodate up to 120 persons
offshore. It is located at the forward end of the main deck of DD8. The aft external walls
and those of critical internal rooms such as the Radio and Jacking Control room, are A60-
rated. The four levels are known as Main Deck, 01 Level, 02 Level, and 03 Level. All four
levels are accessible externally (via external walkways around the LQ) and internally (via
internal stairwells).
Main Deck
Port side consists of laundry, change room, sick bay and coffee room.
Starboard side consists of laundry, change Room, women’s change room and gymnasium.
01 Level
Port side consists of two man accommodation units. Aft is AHU and internal stairwell to all
levels. Forward is external stairwell to all levels.
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Starboard side consists of Two Man Accommodation Units. Aft is AHU and internal
stairwell to all levels. Forward is external stairwell to all levels.
02 Level
Port Side consists of two man accommodation units. Aft is internal stairwell to all levels and
AHU, movie room, dish wash room and galley and CG Locker. Forward is external stairwell
to all levels. Two lifeboats are outside, accessible from Forward and Aft.
Starboard side consists of two man accommodation units. Aft is internal stairwell to all
levels and AHU, Linen Locker, Chiller, Freezer, Reading Room and CG locker. Forward is
external stairwell to all levels. Two lifeboats are outside, accessible from Forward and Aft.
The mess room is Aft and central.
03 Level
Port side consists of two man accommodation units, 5-one man accommodation units and the
OIM cabin. Aft is internal stairwell to all levels and AHU, and offices and OIM Office.
Forward is external stairwell to all levels and access to Helideck.
Starboard side consists of two man accommodation units, 3-one man accommodation units
and company man cabin. Aft is internal stairwell to all levels and AHU, company man
office, radio and tracking room and equipment room. Forward is external stairwell to all
levels, two offices, training Room, conference room, Helideck waiting room and access to
Helideck.
04 Level (Roof)
Roof space is a restricted access area, with
ventilation inlets/outlets, communications systems,
UPS batteries storage, laydown spaces and:
Starboard Side - Emergency Generator Room
(Module, accessible only externally).
Aft - Fast Rescue Boat.
Port side - FROG laydown area
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3.5.5 Helideck
The platform of the helicopter deck is designed and built to Class, Regulatory, IMO and CAP
437 to accommodate the Sikorsky S-61N helicopter or S-92 or equivalent. The helideck
polygon structure with included circle has a diameter of 22.2m (72.83ft). Additional
information about the Helideck can be found in the Marine Operations Manual.
The ABS refuelling arrangement, consisting of storage, pumping, dispensing and filtering
systems is isolated and not in use and as such does not pose a hazard.
3.6 Loading
Limiting design loads for DD8 are stipulated in Section 1.6 of the Marine Operation Manual,
from which the following figures are replicated.
3.6.1 Design Deck Loads
Pipe Racks 2,636 kg/m2 (540 lbs/ft
2)
Main Deck (Outside Pipe Rack) 2,075 kg/m2 (425 lbs/ft
2)
Drill floor (Working Areas) 1,953 kg/m2 (400 lbs/ft
2)
Drill floor (Set Back Load) 550 tons (1,210 kips)
Helideck 9,253kg + 205 kg/m2
20,400 lbs + 42 lbs/ft2
Quarters Deck 459 kg/m2 (94 lbs/ft
2)
House Top 459 kg/m2 (94 lbs/ft
2)
Mud Pits 8,299 kg/m2 (1,700 lbs/ft
2)
Machinery Spaces 1,328 kg/m2 (272 lbs/ft
2)
Top of Mud Process Area 928 kg/m2 (190 lbs/ft
2)
Sack Stores 2636 kg/m2 (540 lbs/ft
2)
House top access ways 459 kg/m2 (94 lbs/ft
2)
Pipe Rack Beam (Cantilever) 7440 kg/m2 (5000 lbs/ft
2)
3.6.2 Cantilever Drilling Loads
The cantilever and associated structural components will accept a maximum combined total
drilling load of 2,700 kips (1,223 Tons) within the maximum individual component load
limits shown below:
Setback Load 550 tons (1,210 kips)
DD8 Helideck – viewed from LQ Roof DD8 Helideck – viewed from Crew Boat
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Rotary Load 907 tons (2,000 kips)
Hook Load 907 tons (2,000 kips)
Cantilever Skimmer Tank 4.5 tons (10 kips)
3.6.3 Cantilever Pipe Rack Deck Load
The Cantilever Pipe rack Deck load limit in drilling position is 800kips. The LCG of this
800kips load is to be a minimum of 69ft forward of well center. The Cantilever Pipe rack
Deck load limit under towing conditions is also 800kips.
3.6.4 Conductor Tension Drilling Load
The conductor tension drilling load of 500kips (227 tons) is supported by the conductor
platform which is not part of the cantilever drilling load. It is located at 20ft aft of transom.
3.6.5 Bulk Storage
‘P’ Tank (Cement) 3 x 58 m3 (2,049 ft
3)
‘P’ Tank (Mud) 2 x 58 m3 (2,049 ft
3)
‘P’ Tank (Gel) 2 x 58 m3 (2,049 ft
3)
Sack Storage Room 5,000 sacks
3.6.6 Liquid Capacities
Lube Oil 11 m3 / 383 ft
3 / 68 bbl
Base Oil 248 m3 / 8,762 ft
3 / 1,561 bbl
Fuel Oil 532 m3 / 18,777 ft
3 / 3,345 bbl
Dirty Oil 8 m3 / 294 ft
3 / 52 bbl
Separator Tank 5 m3 / 179 ft
3 / 32 bbl
Potable Water 326 m3 / 11,525 ft
3 / 2,053 bbl
Drill Water 3,457 m3 / 122,094 ft
3 / 21,746 bbl
Preload (Sea Water) 11,222 m3
/ 396,305 ft3
/ 70,586 bbl
Mud/Slugging Pits 853 m3 / 30,116 ft
3 / 5,364 bbl
Brine 161 m3 / 5,699 ft
3 / 1,051 bbl
(Tank tables are to be found in Appendix B of the Marine Operation Manual)
3.6.7 Pre Load
Pre load is the ballast weight required, to be added to, the variable load to simulate spud cans
reaction to maximum wind and wave conditions. Preloading the Unit tests the soil to the
vertical leg load that would be imposed by the design storm survival condition. Preloading is
required at each location prior to elevating the hull to the desired working air gap.
Required information concerning lightship, variable loads, etc. is to be found in the Marine
Operations Manual. This information along with variable (VCG), longitudinal (LCG) and
transverse (TCG) centre of gravity is necessary to determine the preloading for any particular
location.
The values of pre load requirements for the range of water depths are given in Section 3 of
the Marine Operations Manual.
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3.7 Environmental Limitations
3.7.1 Environmental Effects Under Tow
The angle of roll and/or pitch should not exceed those that are shown on the Critical Motion
Curve as defined in section 2.14 of the Marine Operations Manual.
In the event these limits are approached, the tow course and/or speed must be altered as
necessary to keep the Drilling unit’s motions from exceeding the limit.
3.7.2 Environmental Effects when Raising / Lowering the Hull
The hull can only be raised or lowered during relatively calm weather conditions.
Wave height Not to exceed 5ft
Wind Speed Not to exceed 24knots
Current (at surface) Not to exceed 0.5knots
Current (at seabed) 0
Unit Motion (pitch or roll) 0.5 degrees
Allowable sea-bed slope (Soft surface) No limitations
Allowable sea bed slope (Hard Surface) 4 degrees
Seabed Load Bearing Capacity 6.54 kips/ft2 to 26.95 kips/ft
2
3.7.3 Environmental Limitations Elevated
The drilling unit is expected to be lowered, or raised only during relatively calm weather
conditions. The environmental criteria to which this drilling unit has been designed are
detailed below.
Exceeding these environmental limitations will jeopardize the safety of all personnel aboard
and put the drilling unit itself in danger and potentially in harms’ way.
It is the duty of the Rig OIM to ensure that operations remain within the environmental
parameters necessary for safe operations. At any point that environmental parameters for
normal drilling operations are exceeded or environmental conditions are deteriorating to a
point that they will be exceeded, it is the duty of the Rig OIM to take precautions by
suspending normal operations preparing to take precautionary measures as outlined in the
“Storm Survival Mode”.
3.7.4 Storm Survival Condition
Water Depth (ft) 350
Maximum Wave Height (ft) 48.0
Corresponding Wave Period (sec) 14.0
Maximum Wind Velocity (knots) (one-minute average) 100.0
Current – Surface (knots) (profile piece-wise linear) 1.0
Air gap (ft) 50.0
Penetration (ft) 17.5
Total Elevated Load (kips) 25329
(See section 4.4 of the Marine Operations Manual “Storm Survival Mode”
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3.7.5 Normal Drilling Condition
Water Depth (ft) 350
Maximum Wave Height (ft) 40.0
Corresponding Wave Period (sec) 14.0
Maximum Wind Velocity (knots) (one-minute average) 70.0
Current – Surface (knots) (profile piece-wise linear) 1.0
Air gap (ft) 36.0
Penetration (ft) 17.5
Total Elevated Load (kips) 27329
(See notes for environment A Marine Operations Manual-1.18)
(See section 4.3 of the Marine Operations Manual “Normal Drilling Mode”)
3.8 Power Generation -
3.8.1 Prime Movers
Five Diesel Wartsilla, model 6L26A2, radiator cooled engines, 2151hp @ 900 rpm, driving
Leroy Somer LSA56VL8R/8P AC generators, located in the engine room aft of the
machinery deck.
3.8.2 Emergency Power
One Diesel Caterpillar, Model 3412 TA, 830hp @ 830 rpm, diesel electric set driving a 480
volt, AC generator having an emergency electrical power distribution panel with interlocks to
the main distribution panel. The Emergency Generator Room is located on the Starboard
roof of the Accommodation Unit.
3.8.3 Rig Air Compressors / Receivers
Two Cold-Start Sperre HL2/77 air compressors rated at
16.5 ft3/min capacity and 435psi.
Three medium pressure (Rig Air) Quincy QSI-500-
AVA3296 single stage rotary screw compressors rated at
494 ft3/min and 110 psi, connected to 1 Ultra Air /
LFE1600-DNS04 Air Dryer, with rated capacity of 1488 ft3/min.
One Low Pressure Quincy QSI-500 single stage rotary screw compressor rated 494
ft3/min and 110psi regulated down to 60psi, connected to 2 Ultra Air / LFE800-DNS13
Air Dryers with rated capacity of 550ft3/min.\
One 240 ft3, 125psi rated
Air Receiver located in the Auxiliary Machine Room,
Starboard Aft.
DD8 Main Engines / Generator Sets and Diesel Fuel piping
Rig Air compressor (Typ)
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One 120 ft3, 125psi rated Air Receiver located on the Drill Floor.
One 120 ft3, 60psi rated Air Receiver located in the Auxiliary Machine Room,
Starboard Aft.
3.9 Towing Arrangement and Limiting Conditions
3.9.1 Towing Equipment
Tow gear consists of two 165st towing bits, with Fairleads in line with towing bits. The
towing bridle consists of a 3” chain linked to a 2 ½” wire rope fish plate to a 2 ½” tow line
and a hook up system. The rating of the tow gear is 85MT, with a spare bridle kept on board.
One FA5-16XMK1GPV winch rated at 5MT is used to manoeuvre the Towing Bridle.
The towing arrangement drawing is to be located in Appendix D of the Marine Operation
Manual, drawing # M102-20. As a conceptual drawing only, all towing arrangements must
be verified by the tow master / owner prior to the commencement of any tow.
3.9.2 Preparation for Towing
All towing activities are to be planned; the planning of a tow must be done considering the
following checks;
Stability for the loading condition and / or tow mode
Securing of water tight closures
Sea fastening
Safety gear and lifesaving equipment
Unit has readied for tow according to requirements of Marine Operation Manual
Approval of tow plan by a qualified marine surveyor which is to include;
Tow route
Towing procedures
Weather forecasting
Suitability of Tug(s)
Potential alterations to routing as contingency
Identification of ports or sheltered areas en route
Arrangements for progress reporting
Only after all approvals and procedures have been secured and accomplished should the tow
be allowed to commence.
3.10 Anchors
4-five tons fluted anchors are provided in total, two on the bow (one on the port side one on
the starboard side), and two aft (port and starboard). Each anchor has its own dedicated
electrically powered winch, a Brohl 400Kn with 2500ft of 1½” wire rope with breaking
strength of 1190 Kn.
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3.11 Jacking System
The rig jacking system is for elevating and lowering the drilling unit and
is a KFELS rack and pinion model elevating system. The system
consists of a central console, three Motor Control Centers (MCCs), three
local consoles with nine jacking assemblies each or 36 rack & pinion
type jacking units.
The jacking control house is located on the 4th
level (03 Level) of the
quarters in the combined Radio Room and Jacking Control House.
3.11.1 Jack Ratings
Jacks or Pinions - 36
Normal Jacking - 1000 kips
Pre Load Jacking - 1300 kips
Static Holding - 1869 kips
Jacking Speed - 1.5 ft/min
Allowable Motion - 0.5 degrees (single amplitude)
For further details refer to Section 3 of the Marine Operation Manual.
3.11.2 Self Positioning Fixation System
DD8 is equipped with an ABS approved, hydraulically activated fixation system with
hydraulic power supplied by individual HPUs at each leg.
3.12 Skidding Systems
DD8 skidding systems are those systems used to move the
cantilever beams relative to the hull, and the drill floor relative
to the cantilever beams.
The cantilever is intended to be stored on the main hull and
extended aft to a maximum of 70ft over the vessel transom
during operation (Section 3.”Elevated Operation” of the
Marine Operation Manual). The drill floor can be skidded a
distance of 15ft port or starboard of the vessel centre.
A hydraulic skidding system is installed on port and starboard
sides of the cantilever to enable it to be extended from stored
location to operation position and withdrawn from operation
position to stored location.
The cantilever skidding system is comprised of:
Two pumps located on the Main deck.
Four hydraulic cylinders
Skidding control console located on the main deck portside.
The rate of travel for the cantilever skidding system is 1.5ft / min.
The drill floor skidding system is comprised of,
Cantilever jacking system,
looking Aft
Cantilever jacking system,
looking Fwd
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Two hydraulic cylinders installed on the forward and aft sides of the drill
Each cylinder is fitted with reversible locking claws
Hydraulic power pack located above the drill floor
A control console located on the Aft side, outside and below the drill floor.
The rate of travel for the drill floor skidding system is also 1.5ft / min.
3.13 Major Hoisting and Lifting Equipment
3.13.1 Deck Cranes
Quantity - 3 (Port Forward, Port Aft and Starboard)
Manufacture - Favelle Favco
Model - Model 7.5/10k
Lifting Speed - Variable
Boom - 120 ft
Lifting Capacities - 10.9 tonnes at max radius
For complete details on the controls, maintenance and operation of the
cranes, refer to the crane operation and maintenance manual. This
manual is the required reading for the crane operating crew and all
personnel involved in crane maintenance.
3.13.2 Derrick
The derrick (NOV SSBN-1060/36-36-170X) has a
base of 36ft x 36ft, a water table (crown) size of 17ft
x 16ft. The travelling assembly is strung up with 2”
OD main hoisting wire on a NOV Hydralift HB-N 8
sheaves on travelling block set up rated at 1060 st.
3.13.3 Derrick Capacity Ratings and Equipment
The derrick is designed to accommodate a setback
load of 550 tons (1,210 kips).
Static Hook Capacity: on 16 part reeving = 2,000
kips
The Derrick is designed to withstand loads and reactions from the following equipment
located and operating within it:
Guide Rails with Top Drive and Retractable Dolly
Crown Block Assembly
Bridge Racker Crane
Derrickman’s Cabin
Fingerboard
Racking board
Casing Stabbing Basket
Manual Racking winches (Qty: 2)
Fwd Port Crane
View looking directly up the Derrick
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Stand-building System incl. Guide Frame, Upper and Lower Guide Arm
Rig Tong Counterweight Systems incl. Wire assemblies
Bug Blowers
Sheaves and Snatch Blocks for the utility lines
Derrickman’s Escape Station
HVAC unit.
The Derrick is designed and manufactured to accommodate simultaneous drilling and stand-
building operations.
The fingerboard is approximately 79ft above the drill floor and is equipped to set back
approximately 20,000ft of tubulars as indicted below:
Drill Pipe
57/8 inches OD, S-135, Range 2, XT57 tool joints, 7 inches OD x 4.25" ID, 26.3 ppf
nominal.
Drill collars
Six, 9½" OD x 3" ID, spiral drill collars, Eighteen (18) 8½" OD x 213
/16" ID spiral drill
collars, Eighteen (18) 7" OD x 213
/16" ID, spiral drill collars.
Heavy-Wall drill pipe
Thirty, 57/8" Heavy Weight drill pipe, XT57 tool joints.
3.13.4 Drawworks
The NOV AC electric powered single speed gear driven (SSGD), electrically powered
drawworks located on the drill floor is for the lifting and handling of the drilling equipment.
It is powered by four General Electric GEB22A2 AC motors with continuous ratings of
1,150 HP, 600VAC and 1120A per motor.
For further information, refer to the following:
a) Drwg No. G007-01 General Arrangement – Drill Floor and Pipe Rack Plan.
b) National Oilwell Varco (NOV) Operational and Maintenance Manual for SSGD 4600-
57-82-1015 Drawworks. This manual gives drawings, diagrams, instructions and
operational limits.
3.13.5 Top Drive
Manufacture - National Oilwell
Model - HPS 1000-2E-AC-KT
Motor Rating - 1,150 hp (2 motors)
Capacity - 1,000 short tons
Max. Continuous Torque - 78,450 ft-lbs
Max. Breakout Torque - 115,000 ft-lbs
Max. Makeup Torque - 115,000 ft-lbs
Max. Speed - 280 rpm
Quantity - 1 Top Drive (landed on Drill Floor)
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The Hydralift Power Swivel (HPS) system is the top drive system used to rotate and make up
the drill pipe and bottom-hole assembly components. Primary components of the top drive
system include:
Drive System
Rotary Swivel
Pipe Handler System
Control System
Auxiliary System.
The HPS package provides rotating power to the rotary drive, allowing tripping, circulating,
rotating and running casing.
Refer to Top Drive Drilling System Service Manual for detailed specifications and operating
limits.
3.13.6 BOP Handling Hoists
Two JD Neuhaus / JDN-EH50 BOP Handling Chain Hoists are located above the cellar
deck area in the cantilever. Their function is to manoeuvre the BOP stack between the BOP
storage area on the cellar deck port side and the conductor casing at the well center line.
The chain hoists are designed to pneumatically lift, transport and position a BOP stack from
the BOP storage area to the conductor tension platform. Each trolley has a safe working
load of 60MT each.
The trolley hoists are limited to movements within the Cellar Deck area only. The hoists are
only operable when the drilling unit is in the jacked up drilling condition: chain hoists must
be stowed and secured in the storage position at all other times.
3.13.7 Pneumatic Winches
DD8 has a total of nine various types of pneumatic winches for general lifting, handling and
hoisting of personnel. Each is purpose built for the functions intended. Personnel hoists are
dedicated for that purpose only and are fitted with the necessary features of personnel
hoisting devices.
Qty Location Purpose Model Rating
1 Main Deck Towing Bridle FA5-16XMK1GPV 5MT
2 Sub-base Texas Deck Lifting FA2.5MR24MK1G
DP
2.3MT
2 Cellar Deck Utility FA5-16XMK1GPV 5MT
1 Cellar Deck Man Rider FA150KGMR12-1-
E
150kg
3 Drill Floor Stand Building FA5-16XMK1GPV 5MT
1 Drill Floor Personnel Hoisting FA150KGMR12-1-
E/
150kg
1 Pipe Rack Deck Utility FA2.5-8XMK1GPV 2.3MT
2 Monkeyboard Racking Pipe LS2-600R-L-E 600kg
(For compressed air pressure ratings, safe working loads and operational limits. Refer to
the relevant OEM Service Manuals kept onboard DD8).
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3.14 Mud System
3.14.1 Pumps
High Pressure Mud Pumps
Three National Oilwell 14-P-220, Triplex GE 752 mud pumps. Continuous power rating
per motor is 1,150 HP. Max working pressure 7,500psi.
Mud Mixing Pumps
2 HALCO 2500 Supreme, centrifugal 6 x 8 x 14, 10”-14” Impeller pumps. Output capacity
1200 GPM (US). RPM 1800. Power Output 100HP.
2 HALCO 2500 Supreme centrifugal 6 x 8 x 14, 10”-14” Brine Transfer Pumps. Output
capacity 400 GPM (US). Power Output 30HP.
1 HALCO 2500 Supreme centrifugal 6 x 8 x 14, 10”-14” Base
Oil Transfer Pumps. Output capacity 400 GPM (US). Power
Output 20HP.
Mud Charging Pumps
3 HALCO 2500 Supreme centrifugal 6 x 8 x 14, 10”-14”
Output capacity 1200 GPM (US). RPM 1800. Power Output
100HP.
Desander Pump
1 each. 3 x10” Cones. NOV DSN-3V-10CX. Nominal flow rate of 1,200 GPM. 100 HP
Drive Motor.
Desilter Pump
1 each. 16 x4” Cones. NOV DSL-16GG-5CTX. Nominal flow rate of 1,200 GPM. 100 HP
Drive Motor.
Degasser Pump
2 Derrick Vacu Flo 1200. Nominal flow rate of 1,200 GPM. 100 HP Dedicated 6 x 8 x 14
centrifugal Feed Pump. Vacuum Pump, Ingersol Rand /V255/5 HP.
Trip Tank Pumps
2 each 4 x3 x 13. 400GPM. 25 HP HALCO 2500 Supreme Pump.
3.14.2 Mud Processing Equipment
Mud Cleaner
One NOV MC380 Orbital mud cleaner connected to HALCO 2500 Supreme Centrifugal 6 x
8 x 14 with a 10-14” impeller, rated at 100HP and 1200 US gpm feed pump.
Gumbo System
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2 x National Oilwell Model GM250-VS-PPS, dual gumbo conveyor, stainless steel chain
with ¼” opening. Nominal Flow Rate (Total) 2,000GPM.
Shale Shakers
Primary
Quantity 4. . Manufacture: NOV brandt VSM-300 + 1 National Oilwell Varco
DLMS380as mud cleaner. Linear Motion. Nominal Flow Rate 500GPM each.
Gumbo
Quantity 2. National Oilwell Varco GM250-VS-PPL. Dual Gumbo Master. Nominal
Flow Rate, 2,000 GPM.
Mud Agitators
Four Lightning 17L-11, 14.8 HP, at pit #1 and #6
Twelve Lightning 17L-7.5, 10 HP two each pit #2, #3, #4, #5, #7 and #8
Three Lightning 15L-4, 5.4 HP one each at slug pit, pre-mix #1 and pre-mix #2
Mud Mixing
Two each mud mixing hoppers NOV DP-10-150-L, with 1200 US gpm 100hp motors.
19 Mud Guns. Model MGB 3LP12. 95 US gpm through ¾” nozzle.
Two Barite hi rate mixer, NOV DP15 200-400, 120 tons / hr located at pit #3 and #4
3.15 Blow Out Prevention Equipment
3.15.1 Diverter
One 47” maximum bore ABB Vetco Gray, KFDJ, 500psi fixed diverter system complete
with spools, overshots and running tools. Two 16” diameter outlets are located on each side
of the housing with lines extended outboard to the port and starboard sides of the drilling
unit, as well as two 4” flowlines with a pressure rating of 500psi. One 16” flow line is
directed to the mud process area with 16” diameter ball valves, hydraulically controlled,
rated to 500psi, are installed in both overboard lines and the mud return flow line.
There are stand-alone Cameron/EPH Diverter Control Panels located in the Drillers Control
Room and the Rig Manager’s office.
3.15.2 BOP Stack
NOTE: All appropriate components are H2S rated.
BOP Stack– One Annular Hydril- GX type , 5000 psi with 10 K bottom flange and 5K top.
One Hydril –MPL dual compact 13-5/8” dual ram BOP with 10 K top and bottom Flange
conn.
One Hydril –MPL single ram BOP 13-5/8” BOP with 10K top and Bottom conn.
Available Rams (Installed and Spare):
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Two set 5 7/8” pipe rams
One set blind-shear rams
One set VBR 3 1/2” to 5”
One set VBR 5’ to 5 7/8”
One set Casing Ram 9 5/8”
One set Casing Ram 13 3/8”
One set Casing Ram 7”
3.15.3 Choke and Kill Valves
One each manual 3 1/16”, 15,000psi Cameron FLS gate valve and one each hydraulically
activated 3 1/16”, 15,000psi Cameron FLS gate valve are fitted to both the choke and kill
outlets. All valves with studded BX-154 grooves. Steel wrapped, flexible, 3” ID, 15,000psi
76ft WP hoses connect to fixed piping to the choke and kill manifold.
3.15.4 Choke and Kill Manifold
One 3 1/16” x 15,000psi choke and kill manifold complete with
two hydraulically operated chokes and two manual adjustable
chokes. There are two 76ft Coflexip flexible Choke and Kill
Lines rated 15,000psi that are connected to the BOP manifold
via BX-164 Hub Connections. The control panel is located in
the Driller’s control room.
3.15.5 Mud Gas Separator
One Technics Offshore Engineering 05065 or equivalent, Vertical
Mud/Gas Separator (Poor-Boy De-gasser) 30’ in height x 48” in diameter
with a 10” ID vent line extending 10 ft above the derrick A-frame. A U-
tube and siphon breaker is provided. A snuffing system is provided for
the vent line. The Mud Seal height is 19.5 ft.
3.15.6 BOP Control System
Accumulator Unit
Cameron BOP and Diverter Control /system
manufactured to API RP53 requirements, is located on
the Port Cantilever, inboard side below cantilever rack.
Total of 900 US Gallon accumulator capacity without
pre-charge. Working Pressure is 3,000psi, and has two
regulators, a Manual-MKR and an Annular-MKR.
Accumulator Hydraulic Pumps
Two electric driven Cameron 75hp. Flow rate 40 US GPM. Operating Pressure 3,000psi.
The Primary Accumulator Control Panel, a Cameron 2186215-24, is located on the
Cantilever BOP Portside.
The Remote Control Panels, type Cameron SK-2, are located, one in the Drillers Control
Room and one in the OIM Office.
Poor-boy degasser
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3.15.7 BOP Test Unit
A storage and test stump is provided for the 13-5/8” BOP stack.
A Haskel Portable Test Air Driven Fluid Pump Unit is provided; with a pressure rating of
15,000psi equipped with chart recorder and 30ft hose rated at 20,000psi.
3.16 Heating, Ventilation and Air Conditioning
3.16.1 Heating
DD8 is designed for a minimum ambient temperature of -10 °C (14 °F).
Electric duct-mounted heaters are installed at the outlet of air handling units providing heat
to the accommodation spaces, main store and mechanical/electrical workshops.
3.16.2 Ventilation
DD8 is ventilated utilizing mechanical and natural means. Spaces requiring in excess of
1,400 Cubic Feet / Minute (CFM) ventilation air are served by mechanical supply and
exhaust fans.
Ventilation fans are in general adjustable pitch axial flow types. All fans have oversized
motors accommodating 10% overload. Ventilation ducts for machinery spaces and
accommodation areas are fitted with volume control dampers to adjust the amount of
airflow.
Accommodations spaces requiring less than 1,400 CFM are ventilated using natural
aspiration assisted by mechanical fans. Spaces served by natural aspiration with fan assist
include:
Galley
Stairwells (port and starboard)
Toilets
Galley
Laundry Room
Change Rooms
Sick Bay
The table below indicates ventilation arrangements for spaces requiring both supply and
exhaust fans providing an excess of 1,400 CFM air exchange.
Space # Supply #Exhaust Considerations
Engine Room 2 2 Automatic dampers for CO2 release
Sack Storage Room 1 2 No special considerations
Mud Pump Room 2 2 DC motor blower exhaust, independent
Mud Lab 0 1 Within pump room machine space
Mud Pit Room 2 2 50pa neg. pressure maintained
Auxiliary Rooms 1 1 No special considerations
Emerg. Generator 1 0 Not in operation
Supply Fans
Exhaust Fans
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Space # Supply #Exhaust Considerations
0 1 In operation – Engine exhaust fan
Automatic dampers for CO2 release
Emerg. Generator
switchboard room
1 1 For extraction of heat from switchboard
CO2 Room 0 1 No special considerations
Paint Locker 0 1 Natural supply + CO2 manual dampers
Mud Process Area 0 1 Shakers have vented hoods
Drill Floor 2 0 Bug blowers to provide cooling air to drill floor
personnel
3.16.3 Fire Dampers
Air conditioning ducts passing through A0 or A60 class boundaries are equipped with fire
dampers complying with regulatory requirements. Dampers are activated automatically by a
thermal fuse. The fire links are closed collectively when the quarter’s ventilation
emergency shutdown is activated.
The process of initiating a Quarter Ventilation Shutdown will be manually at the ESD
system, which will in turn lead to the corresponding closure of all dampers in the living
quarter. However, when the CO2 system in the galley is activated, the fire dampers at the
boundary of the galley will shut automatically to isolate the galley space from the rest of the
other unaffected boundary.
3.16.4 Air Conditioning
The air conditioning system for accommodation spaces is a refrigerant direct expansion type
and consists of seven AHU-01 to AHU-07 air handling units, using R407C refrigerant,
distributed over the three levels of the living quarters. An independent condensing unit
located on the roof of the quarter’s serves each air-handling unit. Ventilation fans are
installed in the quarters to exhaust air from the galley and sanitary spaces and to supply
fresh air to Galley and Stairs Port and STBD.
The table below indicates locations and capacities of all AHU on board:
Unit Location Cooling Capacity
AHU-01 Quarters 01 Level Starboard. 30 tons
AHU-02 Quarters 01 Level Port 36 tons
AHU-03 Quarters 02 Level Starboard 18.5 tons
AHU-04 Quarters 02 Level Port 19 tons
AHU-05 Quarters 03 Deck Galley 11 tons
AHU-06 Quarters 03 Deck Starboard 21.5 tons
AHU-07 Quarters 03 Deck Port 16 tons
AHU-08 Electrical/Mechanical Workshop 6 tons
AHU-09 Main Storage Room 10 tons
AHU-10A PCR Room Portside 20 tons
AHU-10B SCR Room Starboard 20 tons
AHU-11A Local electrical room 25 tons
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Unit Location Cooling Capacity
AHU-11B Local electrical room 25 tons
AHU-12 Mud Lab 1.15 tons
3.16.5 Refrigeration
The refrigeration system consists of two fan coil units using R404A refrigerant, located one
in each of the chiller and freezer rooms, and two condenser units, mounted on a single skid
located on the roof of the quarters. Each condensing unit has 100% capacity of the system.
The fan coil unit in the chiller room can maintain the temperature in the chiller room at +2
°C / 35 °F. The fan coil unit in the freezer room can maintain the temperature in the freezer
room at –23.3 °C / -10 °F.
3.17 Bilge System
The bilge system serves two different areas, namely port and starboard side. DD8 is equipped
with a centrifugal pump and an air-operated diaphragm pump to serve each area. In normal
conditions, each side must be served by its own pumps. If necessary, the pumps can take
suction from the opposite side manifolds via a cross-over link.
The drilling unit has two ABB M2QA180M4A bilge pumps, with a 550 US gpm capacity
each. It also has two Wilden T20 Diaphragm Pumps each with a 225 US gpm capacity.
All suctions are taken from bilge sumps. They are manifolded and located in the Aft auxiliary
machine rooms port and starboard. Discharge From the system is routed to the bilge holding
tank, mud contaminated tank, overboard to the starboard aft leg well or MARPOL discharge
connection at loading stations.
Coaming Drains from the machinery areas (except mud pump room and mud hopper area) are
led into the bilge sumps. The oily water separator will take suction from the bilge holding
tank and drain holding tank (SW preload tank 18-C). Regular maintenance of oily water
separator shall be carried out accordingly to the maker’s instruction manual. In order to
provide redundancy during maintenance, two oily water separators, each of 10m3/hr are
provided.
Coaming Drains from mud pump room and mud hopper area are directly led into mud
contaminated drain tank. The bilge pumps will take suction from mud pump room bilge sump
and discharge to mud contaminated drain tank. An air-operated diaphragm pump will take
suction from the mud contaminated drain tank and discharge to bilge connections at loading
stations.
The oil discharged from the oily water separator is piped to the dirty oil tank while the clean
water is piped overboard to the port aft leg well (the threshold limit for discharge being
15ppm OIW as per MARPOL requirements).
Dirty oil tank is discharged to MARPOL connection at loading station for transport ashore via
direct discharge to a supply boat or via transportable tanks.
3.18 Deck Drains System
Deck drainage is divided into three areas including,
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Mud Processing deck and shakers – drainage leads to drain sumps on Main Deck and then
to mud containment tank
Main Deck – drainage leads overboard to starboard aft leg well or diverted to pre-load
tank 18C
Cantilever and Drill floor – drainage leads to separation tank starboard aft of cantilever
Drainage can be routed to a skimmer tank, a holding tank or discharged overboard,
depending on the conditions at the time of drainage. Water from the skimmer tank can be
routed to the oily water separator.
3.19 Fixed Fire Fighting Equipment
There are several fixed fire-fighting systems on DD8, including water deluge / spray, foam
and CO2.
3.19.1 Fire water ringmain
DD8 is equipped with a firewater ringmain, fitted with
manual isolation valves and supplied by two Allweiler
NIM80-400/02 Centrifugal vertical fire pumps rated at 500
US gpm, situated in the aft machinery room. The ringmain
supplies hose stations around the MODU including in the
Accommodation unit, and a water deluge system on the Drill
Floor. The firewater main system interfaces with the
foam/deluge system by means of a crossover valve.
3.19.2 Deluge System
The drilling unit is equipped with a deluge system for drill floor area, cellar deck around
BOP equipment, below drill floor and water spray curtain at both side of side shell. Two
monitors are installed at opposite sides of the well testing area. Fixed nozzles are installed
for drill floor and cellar deck area. Water Spray curtain with fixed nozzles are installed at
both side shell for protection of aft portside and starboard side.
The deluge water supply is from the foam/deluge pump located at starboard forward
machinery room during elevated condition and supply taken from fire water main during
afloat condition.
3.19.3 Foam System
The drilling unit is equipped with a foam system for helideck protection. Two monitors and
two foam hoses are installed at the opposite sides of the helideck, to cater for any direction
of wind. The AFFF foam tank and injector pump are located on the helideck aft access
platform (ref. DD8 drawing P119).
3.19.4 CO2 System
The places protected by the CO2 flooding system, and their points of activation are as
follows (Ref. DD8 drawings P-124,5,6):
Engine Room (Local + CO2 Room Main Deck)
Galley (Galley Entrance)
Electrical Room (Local + CO2 Room Main Deck)
Paint Locker (External Paint Locker)
Emergency Generator Room (External Emergency Generator Room)
Firewater pump (above) and Firemain isolation
valve long handle (right)
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3.19.5 Galley Hood Fixed System
A fixed R102 fire extinguishing system is installed in the Galley Hoods over the range,
griddle and deep fat fryer. The system is activated by a manual/remote activation panel
located in the vicinity of the Galley Hood.
3.19.6 Fire Fighting Equipment
Fire hose stations, portable extinguishers, and firemen’s outfits are strategically located
throughout the drilling unit in such a manner as to conform to the International Maritime
Organization Fire Safety Systems Code and the IMO MODU code 2001 consolidated
version.
See table below for list of Portable Fire Extinguishers and other Fire Fighting Equipment:
Portable Fire Extinguishers
CO2 5Kg 8
CO2 6.7Kg 1
CO2 9Kg 2
Dry Chemical Powder 22.5kg 2
Dry Chemical Powder 6Kg 47
Foam 45L 1
Other Fire Fighting Equipment
Fire Hose Stations c/w spanner, nozzle, rack 44
Fire Blankets 1
Fireman’s Outfit 9
(For placement of all Fire fighting equipment and complete listing of accessories see Marine
Operations Manual, Fire Control and Safety Plans)
3.20 Life Saving Equipment
DD8 lifesaving equipment compliment conforms to the requirements of the International
Maritime Organization Life Saving Appliance Code (LAS Code):
Helicopter Rescue Equipment Boxes 3 (Equipped as per CAP 437)
Norsafe Jiangyin JN80F Launched Lifeboats 4 x 60 (2 Port, 2 Stbd)
Inflatable Life Rafts 6 x 20 (3 Port and 3 Stbd)
Ring Buoys of various descriptions 10 strategically placed
Fast Rescue Boat (6 persons capacity) 1 (stored on roof of Accommodation,
launched by the crane)
Personal floatation devices 242 (122 in Accommodation and 120 at
lifeboat stations)
(For placement of all Life Saving Equipment and complete listing of accessories see Marine
Operations Manual, Fire Control and Safety Plans)
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3.21 Fire and Gas Detection Systems
The Fire and Gas Detection System on board the DD8 is separated into two divisions in the
overall fire and gas system.
(a) A gas detection panel which controls the H2S and combustible gas detectors and
integrated directly into the Vessel Management System (VMS).
(b) An auto-safe fire panel which controls smoke detectors, manual call points, heat detectors
and flame detectors. System information is displayed locally on the main fire panel and
also relayed to the VMS system.
The fire and gas detection system panel is located in the Control
Room. Two gas repeater panels to repeat alarm status in the one
in the OIM Office, one in the Drillers Cabin on the Drill floor,
one in the Engine Room and one in the Mud Room. There are
VMS HMI’s in strategic locations throughout the drilling unit.
3.21.1 Main Fire Control Panel
In normal operating conditions, the main fire control panel in the radio room will display
system status, date and time.
The panel has a system over view facility whereby all components, circuit loops and devices
which compose the fire detection system are continuously monitored.
3.21.2 Combustible Gas and Toxic Gas (H2S) Detection
DD8 is equipped with a combustible and H2S gas detection system with sensors located at;
Shale Shakers
Mud Pits
Bell Nipple
Other locations as per regulatory body requirements.
LOCATION H2S LEL
Living Quarters Ventilation System Yes Yes
Bell Nipple Yes Yes
Drill Floor Yes Yes
Shale Shaker Yes Yes
Mud Tanks Yes Yes
FRC, Typical Lifeboat & Typical Life Raft & Life Ring
Typical DD8 Gas
Detector
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3.21.3 Smoke and Heat Detection
DD8 is equipped with a smoke and fire detection system that provides
fire detection coverage for all machine spaces and smoke detection
coverage for all cabins and other required spaces. The control console
is located in the Barge Engineers office. The system is in compliance
with regulatory bodies.
(For numbers and placement of smoke and fire detection sensors see Marine Operations
Manual Drawing # J-134)
3.21.4 Visual / Audible Alarm Locations
Audible and visual alarm comprising the general alarm/Abandon platform alarm/PA with
red beacon flashing lights, fire/PA with red beacon flashing lights, toxic gas alarm/PA with
blue beacon flashing lights, and combustible gas alarm/PA with amber beacon flashing
lights are located in the following areas:
Driller’s Console
Engine Room
Mud Pits Room
Living Quarters (audible only)
Central Area (audible only).
3.22 Water Maker, Sewage Treatment and Environmental Protection
3.22.1 Water Makers
One Alfa Laval, Model D-PU-36-
C100, rated at 12,000 US gpd, waste
heat type and one Haten Boer Water
GSW3 UV sterilizer. One reverse
osmosis unit.
3.22.2 Sewage Treatment Plant
The on board sewage treatment plant is of type Hamworthy ST
type which is a Biological Unit in compliance with MARPOL
73/78.
3.22.3 Bilge Pumps
The drilling unit has two ABB M2QA180M4A bilge pumps, with a 550 US gpm capacity
each. It also has two Wilden T20 Diaphragm Pumps with a 225 US gpm capacity. The bilge
water passes through the oily water separator.
3.22.4 Waste Collection System
Drill floor, rotary and drawworks are fitted with drip pans. The mouse hole and cantilever
pipe deck are piped to a skimmer tank and the oily water separator. Deck drains have been
addressed previously.
3.22.5 Oily Water Separator
Two Aquanautic RWO SKIS 10 coalescing system type, with a nominal capability of 22 US
gpm each. The limit for water discharge is 15ppm OIW as per MARPOL requirements
Typical DD8 Audio-Visual
Alarms
Typical DD8 Smoke Detector
DD8 RO Water Maker
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3.22.6 Garbage Disposal
The galley is equipped with one IMO certified Hobart F03-150 certified
food waste disposal unit.
3.22.7 Garbage Compaction
DD8 is equipped with one Max International MAX40 EX.
3.23 Communication and Instrumentation
3.23.1 Drilling Instrumentation at Driller’s Position
One NOV CYBERBASE full drilling instrumentation and data acquisition system. Also
available to the driller are:
Weight indicator
Standpipe pressure gauges
Choke manifold pressure gauges
Rotary instrumentation
Tachometer
Torque indicator
Top Drive Instrumentation
Tachometer
Torque indicator
Pump Stoke Counters
Tong Torque Indicator
Pit volume totalizer
Mud flow indicator
Trip tank indicator
Automatic driller
Remote choke control unit
Crown clearance indicator
One drilling parameter recorder unit with displays and recorders in driller’s control room,
Rig Manager’s office and Operator’s office.
The six parameter measured are Standpipe pressure, string weight, weight on bit, pump
strokes per minute, torque and RPM.
Instrumentation at Choke Manifold includes one Standpipe pressure gauge; two choke
manifold pressure gauges and two transmitters to the CYBERBASE system.
Instrumentation at Standpipe consists of two Standpipe power choke pressure gauges and
two transmitters.
Deviation equipment consists of one NOV Go-devil deviation recorder, a slick line unit and
an electric Wire Line unit located on Main Deck.
DD8 Garbage
compactor
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3.23.2 Communications Equipment (GMDSS)
Rig telephone system consists of three (3) types
o 15 x Motel SX2000 type with 21 additional indoor outlets (Accommodation block)
o 17 x Gaitronics Commander type weather proof (Outside on Main Deck)
o 14 x Gaitronics AUTELDAC4 Explosion proof (Hazardous areas)
Public Announcement (PA) System (2 stations plus all telephones)
Four hand held VHF radios satisfying GMDSS
Furuno/Fellom INMARSAT C Satellite Communication System
VHF survival radios for each lifeboat
NavTex Receiver
One MF/HF Single Side Band Transceiver (equipped with DSC controller and watch
keeping receiver)
Two VHF Marine Transceivers (battery powered and one is equipped with DSC
controller and watch receiver)
One VHF Aircraft Transceiver
One portable VHF Aircraft Transceiver
One helicopter Beacon Transceiver
One Emergency Positioning Indicating Radio Beacon (EPIRB)
Six Radar Transponders (one in each life boat and 2 in the radio room)
Approximately 6 VHF handheld radios.
3.23.3 Navigation Equipment
Running lights
Aircraft warning lights on top of Legs, Cranes and Derrick
Helicopter perimeter lights
Foghorn
Navigation and obstruction lights
All meet regulatory body requirements. The MODU also has an Inmarsat C GPS.
3.23.4 Instrumentation
Meteorological instrumentation for measurement of;
Atmospheric pressure
Atmospheric temperature
Wind speed and direction
Wave height
Tide
Humidity
Wave profile
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3.24 Hazardous Areas, Inventory
Hazardous Material Storage
Arrangements have been made on the Installation to store hazardous materials.
The capacity of hazardous chemicals is kept to a minimum and a system of segregation is
used to ensure that the contamination of non-hazardous chemicals is avoided.
Storage areas are as follows:
Deck Deck store on Main Deck
Catering Dry store and linen lockers
Mud Engineer Chemicals for his lab are held within the mud lab.
Mud chemicals stored in the sack room.
Mechanics Mechanical workshop. COSHH locker.
Cementers Chemicals stored in the sack room and Main Deck
Painters Paint locker situated on the main deck
Stores Warehouse
Drill Crew Sack Room
Electricians Electrical workshop. COSHH locker.
3.24.1 Hazardous Materials Location and Protection
The following hazardous materials are provided with dedicated storage areas and are
segregated and have appropriate degrees of protection against fire or other hazard.
Radioactive Substances Radioactive containers are stored on Port Bow Side. The containers are stored in a specially
designed container on a quick release platform.
Shipment of radioactive material offshore is the responsibility of the third party company
providing this material. Responsibility for compliance with the requirements regarding the
handling and use of radioactive material offshore rests with the OIM.
The OIM, as the responsible person for ionising radiation, liaises with the qualified radiation
protection supervisor from the third party company using the radioactive source. Names and
addresses of persons responsible for radiological safety, contactable for advice in case of an
incident, are kept on board the MODU.
Operations requiring the use of such material are controlled through the PTW system. All
radioactive material is removed from the MODU prior to a rig move.
An inventory of all radioactive sources on the Installation, together with a record of the
radioactive materials shipment manifests, is maintained by the Barge Engineer.
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Explosive Materials Explosives containers must be placed on top of accommodation Port Bow side. The
containers must be placed on a quick release table to make it possible to dump them in the sea
if needed.
The OIM, as the responsible person for explosives, holds and controls the keys to the
explosives container and liaises with the supervisor from the third party company which uses
the explosives. Records of the explosives inventory are maintained on board.
The use of explosive materials is controlled under the Work Permit system. All explosives are
removed from the MODU prior to a rig move.
An inventory of all explosive materials on the Installation, together with a record of the
explosive materials shipment manifests, is maintained by the Barge Engineer.
Heli-Fuel – Not in use at this moment Heli-fuel (jet fuel) is delivered to the MODU by supply boats in purpose-built, certified transit
fuel tanks and stored, once on the MODU, on a purpose-built platform which is cantilevered
out away from the MODU and which has the capacity to facilitate the storage of two tanks.
The platform for these transit tanks is fitted with a hydraulically operated jettison system for
rapid disposal of the tanks in an emergency. The area is foam deluge protected. The heli-fuel
is transferred from the transit tanks directly to the helicopters. Empty transit tanks are shipped
ashore as soon as possible.
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4 . H S E C R I T I C A L E L E M E N T S A N D P E R F O R M A N C E S T A N D A R D S
4.1 Safety Critical Equipment Overview
The DD8 Hazards and Effects Management Process (HEMP – as described in Part 4 of this
HSE Case) has resulted in a register of Major Accident Hazards and potential Major Accident
Events for DD8, together with Critical Risk Controls. Physical items and systems that are
critical to controlling the risk of MAH are termed ‘Safety-Critical Elements’ (SCE –
comprising equipment, structures and computer systems), whilst activities that are critical to
controlling the risk of MAH are termed ‘Safety-Critical Activities’ (SCA). The
appropriateness of the design, construction and installation of all DD8 SCE is validated by
compliance with, and certification to, the various rules, regulations and standards that form part
of Class and other compliance certifications of the drilling unit. Any new or changed Safety-
Critical Elements that are not covered by Class or other existing DD8 certification are validated
separately as part of campaign planning and preparation.
Identified SCE for DD8, together with associated Performance Standards are listed below,
whilst the SCA are listed in Part 3 of this Case.
4.2 Development and Content of SCE Performance Standards
Performance Standards (PS) have been developed, as part of the HEMP process described in
Part 4 of this HSE Case, for DD8 SCE and SCA, including the following PS parameters for
DD8 SCE:
a) Critical Function(s)
b) Specifications
c) Standard(s) governing design & construction
d) Availability and Survivability requirements
e) Responsible Parties (for ensuring that the SCE is present and properly maintained)
f) Means of Verification
g) Interdependency (what other equipment or systems does the SCE depend upon?).
Compliance with these standards of performance ensures that the SCE fulfil their safety-critical
role in maintaining the risk of MAH to ALARP. Any deviations fall under the general policy
and procedure for the Company Management of Change – requiring formal approval (see Part
3, Section 4.4).
4.3 DD8 Safety Critical Equipment (SCE)
The following is a list of the agreed SCE and associated Performance Standards for DD8 where
it is clearly stated in table below on the reliability and suitability of the SCEs.
The Reliability of the SCE’s is such that for the active systems that needs to perform critical
functions in response to a MAE. and for other systems that which monitor the status of other
systems like alarms etc. the performance standard criteria for reliability can be expressed in
terms of Probability of Failure on Demand ( PFD ) , Safety Integrity Level ( SIL ) or Mean
Time between Failure ( MTBF ) . The frequency and results of tests is such that the Reliability
target (set during the design phase) is confirmed both by the Rig Staff during their maintenance
and by the relevant class authorities during the annual, bi annual and 5 yearly certifications.
Suitability: these SCE’s are all designed according to the prevalent standards as per the rules
and regulations (latest) at the time of producing the rig which include all the certifications of all
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the materials used in the manufacture of the components, and that it confirms to all the rules
and regulations and approved by the relevant authorities.
All the below mentioned SCE are maintained by our staff who follow our maintenance policies
as dictated by the AMOS system and audited in-house cross visit teams and in addition
checked by the OEM depending on the 5 yearly maintenance schedule and also verified
independently by the attending Class Surveyor (ABS) to ensure that these SCE are reliable and
suitable for the jobs they are intended to do.
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DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
1. Hull including
watertight
bulkheads
To safely support
and accommodate
DD8 POB,
facilities,
structures
equipment,
systems,
materials, and all
activities thereon,
when floating and
when elevated
(jacked up). Must
remain rigid,
stable and not
susceptible to
flooding or when
in float mode, loss
of buoyancy.
Single, welded, triangular shaped
steel Hull measuring 74.98m(l) ×
66.45m(w) × 7.79m(h), equipped
with 3 truss-type triangular legs,
each fitted with spud can footing.
Designed and constructed in
accordance IMO & ABS MODU
Code requirements, coatings: surface
preparation with primer and topcoat
according to Keppel “Coating
Specification.” Designed to operate
in water up to 106m (350ft) carrying
plant, equipment and materials for
drilling wells down to 35,000 feet,
and capable of accommodating up to
120 personnel with full SOLAS-
compliant LSA.
IMO Code for the
Construction and
Equipment for
Mobile Offshore
Drilling Units
(1989 IMO MODU
Code with
Amendments) and
ABS MODU Class
*A1
100 % Available, Able
to operate in salt-water
environment and
survive waves up to
15m height and winds
up to 100 knots speed.
Barge Engineer,
supported by
Maintenance
Department
ABS Class
certification,
annual surveys
and five-year
surveys and
dry-docking
survey every 3
years.
Reliability
Monthly PMS
inspection in
Amos.
Re-check every
rig move on
Legs, watertight
doors.
2. Legs, Spud
Cans and
Jacking
System
To safely support
the loads from the
Hull and various
structures when
elevated and the
drilling
operations. It is
must remain rigid,
with limited
flexibility, but
enough to
withstand the
environment
3 triangular-structural, truss cross-
section, jacking legs at 486ft in
length with spud cans. Cans measure
13.85m(d) × 5.79m(h) and have
jetting systems (12 on top and 12 on
bottom). Designed and constructed
in accordance with IMO & ABS
MODU Code requirements, coating.
Legs are elevated and lowered by
means of an opposed-pinion
electrically powered rack and pinion
jacking system constructed by
KEFLS and rated at a total of 36,000
1989 IMO MODU
Code with
Amendments and
ABS MODU Class
*A1
100 % Available, able
to operate in salt-water
environment and
survive wind speeds of
up to 100.
Barge Engineer,
supported by
Maintenance
Department
ABS Class
certification,
annual surveys
and five-year
surveys and
dry-docking
survey every 3
years.
Reliability
NDT on the
legs conduct
after Rig Move
Hull, Jacking
motors
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DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
kips. and Visual
inspection the
Jacking System
3. Topsides
structures
including
accommodatio
n, stairways,
elevated
walkways and
platforms,
cantilever
Provide adequate
living quarters for
rig workers, safe
access to
equipment and
escape
routes/muster
points. Must
remain safe and in
good condition
Accommodation block provides
living quarters for 120 personnel (55
two person rooms, and 10 single
person rooms), galley, washing
facilities, offices, a gym, recreation
room, prayer room, changes room,
and library and mess room. Contains
air conditioning system, rig
manager’s office, and electrical room
also. Lifeboats are situated outside
on level 3, port and starboard (2
each). The emergency generator is
situated on the roof. External
stairwells lead between all floors and
the main deck. The forward
stairwells lead to the helideck.
ABS MODU Class
*A1
100 % Available, Able
to operate in salt water
environment and
survive waves up to
15m height and winds
up to 100 knots speed,
providing adequate
shelter for personnel
inside. Made from
flame-resistant
materials and has
multiple escape route in
event of emergency.
Barge Engineer,
Bosun &
Catering
Department
supported by
Maintenance
Department
ABS Class
certification,
routine
housekeeping
by Catering
Department, ,
annual surveys
and five-year
surveys and
dry-docking
survey every 3
years.
Reliability
Amos PMS
weekly on lift
boats
Hull
4. Helideck
(S61N or S-92
or equivalent)
To provide
support for
helicopters (S61N
or S-92 or
equivalent)
landing and taking
off from the rig.
Octagonal deck located at fwd end of
rig measuring 22.2m in diameter
with Included circle and with three
escape stairs as per IMO MODU
Code. Suitable for S61N or S-92 or
equivalent. Design Deck Load of
9253kg + 205kg/m2.
CAP 437 and ABS
MODU Class *A1
Must survive offshore
environment and
loading from helicopter
landings including
impacts from hard
landings in bad
weather. Should
survive helicopter
Barge Engineer
& Bosun (HLO)
Pre-landing
checks,
integrity checks
against DROPS
on a scheduled
basis and dry-
docking survey
every 3 years.
Structural beams
& access ways,
helideck fire-
fighting systems,
external
communications
systems
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 43 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
crashes and fuel fires.
Reliability
Yearly Audit
conducted by
Client…
Daily
inspection by
the HLO and
conduct
checklist before
any of
helicopter
landing.
5. Derrick
Structure, sub-
structure and
cantilever.
Derrick to provide
main vertical
structure to
support the
hoisting system,
cantilever to
provide for the
full load and
skidding of
drilling set.
NOV Derrick, 170 ft high (below
crown) with 36 x 36 ft base and
water table size of 16 x 17 ft. Has a
static hook load of 2000 kips and
rated for 70 knots of wind with full
set back (550 MT). Substructure is a
KEFLS design. Drill floor measures
44.3 ft by 68.6 ft and has a setback
capacity during operations of 1,210
kips. 10ft windbreakers provided.
Skid-off cantilever rated at 2,700
kips on centreline at a 30ft extension.
Maximum rotary load of 2,000 kips.
ABS MODU Code
& API standards
Must be able to
withstand the extreme
loads required for
drilling operations, as
well as the extreme
environmental loads,
such corrosion, wind
speed (70 knots full
setback, 100 knots with
no set back)
Assistant
Driller,
Derrickhand,
Floorhand,
supported by
Maintenance
Department
Constant use of
derrick,
inspection and
maintenance of
equipment prior
to use and
annual surveys.
Reliability
Weekly Derrick
DROPs
inspections as
given in the
DROPs picture
Client platform
and capping
beams / grillage
and hoisting
equipment
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 44 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
book by third
party surveys.
6. Navigation /
Obstruction /
Aircraft
warning
lights, fog
horns
To annunciate the
drilling unit
position and
direction of
movement when
under tow.
Lights and foghorns provided in
accordance with Regulatory Body
requirements for “non-propelled,
self-elevating drilling unit.”
SOLAS,
COLREGS and
ABS MODU Class
*A1
Storms / bad weather /
heavy seas
Electrical
Maintenance
Personnel,
Barge Engineer
& Bosun
Navigation
lights tested
before every
transit and once
every 6 months.
Reliability
Obstruction
lights and Fog
Horn tested
weekly.
And also daily
visual check the
light up bulb
working before
dark.
Electric power
(with back up
from the
emergency
generator) for the
lights
7. Anchor
winches,
anchor wires
& lines,
anchors
To hold the
drilling rig with
tugs in position at
a platform during
jack-up.
Four Brohl 400 Kn model,
electrically driven anchor winches
with 5T Flipper Delta Anchors. 1.5”
x 2,500ft of wire rope with a
specified breaking strength of 1190
kN (Drum & dynamic brakes
capacity).
ABS MODU Rules
/ Class
requirements
Must survive metocean
loadings as per the
mooring analysis.
Barge Engineer
& Bosun,
supported by
Maintenance
Department
Annual survey.
Reliability
Weekly checks
and inspections
prior to usage.
Rig move
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 45 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
Testing and
check
accordance the
rig move check
lists before
8. Tow bridle +
forerunner and
associated
chain, delta
plates and
shackles
To connect the
drilling rig with
the tugboat when
in transit / under-
tow.
Towing gear consists of 2 towing
bits with fairleads, towing bridle
made of 3” chain connected to 2-½”
wire rope with an 85 MT handling
winch system.
ABS MODU Rules
/ Class
requirements
Must survive towing /
metocean loadings (in
excess of maximum
bollard pull of the tug
boat).
Barge Engineer
& Bosun,
supported by
Maintenance
Department
Annual survey.
Reliability
Monthly
inspections,
pre-tow checks
Tow boat
complete with
main tow wire +
shackle to connect
onto WA
forerunner.
Line throwing
gun (for back-up
tow line).
9. Draw works To provide
hoisting power
necessary to run
tubulars into and
out of the well
bore.
One NOV Model-SSGD-4600-57-
82-1015 Drawworks for 2” diameter
drill line, with standard equipment, 4
General Electric 22A2 AC Motors
rated at 4600HP and Crown Saver.
NOV Drilling Control and Data
Acquisitions System (DCDA) used.
API 7 & 8 Must be able to
withstand the extreme
loads required for
drilling operations.
Toolpusher,
Tourpusher and
Driller,
Derrickhand,
supported by
Maintenance
Department
Maintained and
serviced in
accordance with
NOV Ops and
Maintenance
Manual.
Reliability
Main generators
Crown Block
Derrick Structure
10. Drilling line
and clamp
To provide the
vertical lifting
required of
2” diameter x 7,500 ft
2 NOV (or equivalent) drill collar
safety clamps for 9¼” to 10½”.
API 7 & 8 Must be able to
withstand the extreme
loads required for
Toolpusher,
Tourpusher,
Assistant
Annual survey.
Drawworks
Deadline anchor
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 46 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
tubulars in and out
of the well bore.
drilling operations. Driller &
Driller. Reliability
Drilling line
Slipped & Cut
on a regular
program based
on Ton Miles.
Clamp
inspected each
time line is cut.
11. Crown Block To provide the
elevated sheaves
to work in
conjunction with
the travelling
block.
NOV CBE 7 x 72 (or equivalent)
Crown Block with seven 72”
diameter cluster sheaves, one 72”
diameter fastline sheave and one
fastline sheave grooved for 2”
diameter wireline. Rated for 1060
short tons.
API 7 & 8 Must be able to
withstand the extreme
loads required for
drilling operations.
Toolpusher,
Tourpusher and
Driller
Annual survey.
Reliability
Daily
inspections
conducted
Drawworks &
drill line
Derrick Structure
12. Deck Cranes To provide the
lifting capabilities
necessary for
loading and
offloading
equipment and
supplies, and
positioning
equipment on
decks.
Three Favelle Favco Pedestal Crane
Model 7.5/10K with 120ft booms
located starboard, port-aft and port-
fwd of the drilling unit. Maximum
lifting capacity of 10.9 tonnes at max
radius. Auxiliary hoists rated at 11
short tons. Prohibited from operation
during winds speeds above 40 knots.
API 2C & ABS
Guide for
Certification of
Cranes 1991
Must be able to survive
reasonable excess of
rated capacity loads
and extreme
environment
conditions.
Barge Engineer,
Crane
Operators &
Deck Pushers,
supported by
Maintenance
Department
Maintenance
and inspections
done in
accordance with
crane
operations and
maintenance
manuals. Load
test every 5
years and
inspected
Crane’s own
diesel engine and
hydraulic
operating system,
instrument air
from the drilling
unit system (to
start the crane
engine) and
electric supply for
lights etc. (but
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 47 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
annually by
ABS.
Reliability
Daily crane
inspection,
Motor oil
checks as
require in the
crane checklist.
Weekly PMS
Amos
critical for MAE
avoidance).
13. Winches For general
lifting, handling
and servicing of
utilities and
personnel.
6x FA5-16XMK1GPV @5MT, 2x
FA2.5MR24MK1GDP @2.3MT, 2x
FA150KGMR12-1-E @150kg, 1x
FA2.5-8XMK1GPV @2.3MT, 2x
LS2-600R-L-E @600kg.
LOLER & API 7K Must be able to
withstand reasonable
excess of rated safe
working loads, and rig
working environment.
Barge Engineer
& Maintenance
Department
Routine
maintenance
checks in
accordance with
equipment
manual and
prior to-use and
3rd party
inspections
every 6 months.
Reliability
Weekly PMS
Amos
Pre-Checks
before use.
Rig air supply for
winches, shivs in
the derrick and at
monkey board.
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 48 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
14. Pad eyes,
sheaves, chain
hoists,
shackles,
slings, wire
rope, plate
clamps,
hooks,
spreader bars
To provide the
physical link
between the items
to be lifted and the
lifting device.
Constructed to approved standards
relating to specific item and shipped
with certification to recognised
approved certifying body such as
ABS or similar.
LOLER & API 8 &
9
Must be able to
withstand reasonable
overload and offshore
environment.
Barge Engineer
& Tour Pusher
supported by
Maintenance
Department
Six monthly
visual
inspections and
colour coding
Reliability
Daily / weekly
and pre-job
inspections
done by day
crew.
Lifting devices
such as winches
and cranes.
15. Transfer
Baskets
To support
personnel during
transfer by crane.
Transfer basket to
support equipment
during transfer by
crane.
3-person FROG Marine Transfer
capsule.
LOLER & API 2D Must be able to
withstand rated load +
overload due to shock
loading up to weather
limits.
Crane
Operators &
Barge Engineer
Recertification
every two
years.
Reliability
Inspection prior
to use and 3rd
party
inspections
every 6 months.
Crane and lifting
gear
16. Mud supply
system – mud
pumps and
To provide and
maintain an
appropriately
Three National Oilwell 14-P-220
1150HP Triplex Mud Pumps rated
@7,500psi maximum working
API (various
elements)
Must survive full range
of required mud
parameters –
Assistant
Driller, Mud
System
Reliability
Daily and
weekly
Main Electric
power, with back
up from a diesel-
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 49 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
lines weighted mud
column in the well
during all drilling,
well construction
and workover
activities.
pressure. 5-½” and 7” liners
available with 8” discharge/suction
line. Working pressure of 3500psi
and working flow rate of 822 US
GPM. RR type CX reset relief valve.
Five Halco 2500 Supreme Pumps (2
for mixing 3 for charging) with
output of 1200 US GPM.
Three Halco 2500 Supreme Transfer
Pumps 4x3x13 Centrifugal with
output of 400 US GPM.
Hoses rated at least at maximum
working pressure of high-pressure
mud system.
compositions,
pressures, flow rates.
Operator,
Pumphand &
Maintenance
Department.
inspections
conducted by
the day crew.
powered unit.
17. Mud Flow
Sensor, PVT
system, trip
tank
instrumentatio
n
To provide the
driller with real-
time monitoring
of mud flow and
volumes, during
drilling, tripping
and running
casings or
completions.
National Oilwell Varco /
CYBERBASE - Full drilling
instrumentation and data acquisition
system.
API (various
elements)
Must survive
fluctuations in mud
parameters up to alarm
points. Must survive all
types of mud and
potential contamination
from reservoir fluids.
Mud System
Operator,
Electrical/
Electronic
Maintenance
Personnel &
Driller
Reliability
Constant
monitoring and
weekly
inspections
done by the day
crew.
Electric power,
with back-up by
an Uninterruptible
Power Supply
provides power to
Mud and drill
watch systems in
the case of a
power failure.
18. Casing and
Cement: exact
specifications
come from the
client and
differ from
To keep formation
fluids in the well
bore at all zones
above and/or
below the
reservoir.
Data unavailable, as exact
specifications come from the client
and differ from well to well, but must
be suitable for the worst case
reservoir fluid properties and
mechanical loading from weight of
Applicable API
standards / RPs and
client procedures
Must survive down-
hole environment, full
pore pressure &
temperature, and
weight loads.
Client and
cementing
service
contractors are
also responsible
parties.
Measurements
and numbering
of casing by
Client Rep.
Casing and
Cement are
dependent on
each other. Both
are dependent on
casing/cementing
program by the
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 50 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
well to well material above etc. Tour Pushers &
Drillers for
implementation
and challenges
to client well
design.
client and
cementing service
contractors.
Toolpusher,
Tourpusher &
Driller all review
the well program
and any changes
on a daily basis,
to help identify
any problems of
hazards
associated with
the design.
Remedial Action
= formalize this in
the HSEMS
19. Annular
BOP(s)
To close the well
bore annulus on
all sizes and types
of tubular.
One Hydril GX 13-5/8” size
5,000psi Annular Blowout Preventer.
Top 5K and Bottom 10K.
API 16
(Certificate of
conformation every
5 years)
Must be able to
withstand annular
pressure exerted by the
formation (up to its
rated working
pressure).
Toolpusher,
Driller and
Hydraulic
Technician,
supported by
Maintenance
Department
All the BOP
components are
leak tested prior
to use on each
well, and any
leaking
components are
changed out
according to the
Vendor
Procedures. 3rd
party certified
pressure tests
every three
Accumulator
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 51 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
years.
Reliability
20. Ram type
BOP(s)
To shut in the well
on pre-determined
sizes of tubulars,
or open hole, and
to shear tubulars.
One Hydril single and one Hydril
Dual ram 13 5/8” size, 10,000psi
working pressure, with 10 K top and
bottom flange Connections. Manual
Ram Locks and H2S service.
Available Rams –
2 sets Pipe Rams 57/8”
1 set Blind-Shear Rams
1 set VBR or Flex Packer 3 ½” to 5”
1 set VBR or Flex Packer 5” to 57/8”
1 Casing Ram 133/8”
1 Casing Ram 95/8”
1 Casing Ram 7”
API 16 (Certificate
of conformation
every 5 years)
Must be able to
withstand well bore
pressure exerted by the
formation (up to its
rated working
pressure). Must be able
to shear tubulars.
Toolpusher,
Driller and
Hydraulic
Technician,
supported by
Maintenance
Department
All the BOP
components are
leak tested prior
to use on each
well, and any
leaking
components are
changed out
according to the
Vendor
Procedures. 3rd
party certified
pressure tests
every three
years.
Reliability
Accumulator
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 52 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
21. IBOPs To prevent
formation fluids
exiting through
the drill string.
One Vetco Gray (or equivalent) Top
Drive upper IBOP, remotely
operated. Outside diameter 71/8” and
minimum inside diameter 3”, with
X-57 Box/Pin connection type and
working pressure of 15.000psi.
API 16 Must be able to
withstand potential
shut-in drill pipe
pressure and all well
bore fluids / drilling
mud.
Toolpusher,
Tourpusher and
Driller
supported by
Maintenance
Department
Tested regularly
and either
repaired or
replaced with a
serviced
standby unit.
Reliability
TDS power
supply (for the
TDS IBOP), and
manual
intervention for
the Tripping
Safety Valve.
22. Choke
manifold and
control panel
To control
formation
pressure while
circulating out
kick/well bore
influx.
One Control Flow Choke Manifold
31/16”, 15,000psi with two WOM
FEM (or equivalent) manually gear
operated Adjustable Chokes and two
WOM WCR 501 Power Chokes.
Flexible Choke and Kill Lines to
BOP manifold, two Corflexip with
BX-164 connections and inner
diameter of 3”, rated at 15,000psi,
length 76’.
Power Choke/Dual Choke Control
System remote control panel situated
in driller’s Control room.
API 16 Must be available at all
times when drilling,
tripping and running
casings or completions.
Must be able to
withstand backpressure
and flow rates and
pressures exerted
during well kill
operations.
Toolpusher and
Drilling
Department
supported by
Maintenance
Department
Unit is tested on
a regular basis
with the BOP
tests. Any
leaking
components are
either repaired
and retested or
changed out
with spare
remanufactured
units.
Reliability
Rig air supply
23. Accumulator
and BOP
Control Panel
To provide
necessary
hydraulic pressure
and control for
Accumulator Unit consists of one
Cameron (or equivalent) BOP and
Diverter control system, located
inboard side Port cantilever below
API 16 & API RP-
53 requirements,
3rd edition, Mar
1997
Must be available at all
times that there exists a
potential for formation
fluids influx into the
Toolpusher,
Tourpusher and
Driller
supported by
Reliability
Daily
monitoring.
None
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 53 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
operation of the
blowout
preventers.
pipe rack. Rated for working
pressure of 3,000psi. Reservoir
capacity of 825 US gal, and total
accumulated capacity (w/o
precharge) 900 US gal. Control
manifold type BOP valve and
Diverter with elctro/pneumatic
interface. Regulator type Manual
MKR and Annular AKR.
Two Cameron type Accumulator
Hydraulic Pumps producing 40 US
GPM at 3,000psi. Operable off
emergency generator.
Primary Control Panel Cameron
2186215-24 type located Port
Cantilever below pipe rack, controls
all annular BOPs, Ram BOPs,
Diverter system, Kill and Choke line
valves. Warning lights for
accumulator pressure, reservoir level
and rig air, as well as system
pressure regulator, annular pressure
regulator and flow meter.
Remote control panels Cameron SK-
2 type situated in Driller’s Control
room and rig Manager’s Office.
well bore, and most
especially during
periods of circulation
and tripping activities.
Typically the mud
loggers will have an
independent mud
monitoring system to
reduce reliance on a
single system.
Must survive loss of
main power and marine
environment.
Maintenance
Department
24. Diverter (and
lines)
To safely divert
shallow gas from
the drilling unit
while drilling top-
Fixed ABB Vetco Gray KFDJ
diverter BOP. Max bore 47”, inner
diameter of insert packer 27½” to
17¾” (10 diverter assemblies).
API 16 Well cannot be
constructed without it.
Multiple concentric
casings allow for some
Toolpusher,
Tourpusher and
Driller
supported by
3rd
party
certified
pressure tests
every three
Accumulator
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 54 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
hole section. Working pressure of 500psi. Two
diverter outlets of 16” nominal
diameter.
Flow lines; 1 ABB Vetco Gray
Hydraulic Operated Ball Mud Return
and 2 Overboard all rated at 500psi.
Cameron Hydraulic/ Electric/
Pneumatic Control Panel situated on
Port Cantilever, inboard side below
cantilever pipe rack. Remote control
panels in Driller’s Control Room and
Rig Manager’s Office.
loss of integrity
without blowout.
Must be able to survive
high velocity flow of
formation gas and
debris for long enough
to delete a shallow gas
pocket.
Maintenance
Department
years.
Reliability
Tested on a
regular basis
with the BOP
tests.
25. Fuel
containment
systems
To contain fuel in
storage and in
engine injection
lines and in
refuelling lines
Fuel Oil storage situated in hull
structure (Tanks 10P, 10S, 14P &
14S). Capacity for 3,344 bbl (532
m3).
Fuel Oil Day Tank provided with
drain valves.
Two diesel-fuel hoses 70’ long, 3”
diameter Brazen light with Everite
3” connectors.
ABS and IMO
MODU regulations
Must be available
during all periods when
the well is susceptible
to loss of control after
top-hole section.
Must survive engine
room environment and
fuel type / pressure.
Mechanic Central
monitoring
alarm system
and tank
sounding.
Reliability
Weekly Amos
PMS and
inspection
N/A
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 55 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
26. Pressure
vessels &
Pressure
Relief Valves
Vessels must
contain pressure.
PRVs must relieve
any excess
pressure beyond
vessel design
pressure.
Four Barite/Bentonite Thames type
Silos. Capacity 2400 ft3 located on
main deck forward. Rated at 60psi
with Crosby Griss / JOS-E-15-J
relief valve, 2” x 3” size with set
pressure of 62psi.
Three Thames VC 3500 Cement
Silos capacity 2048 ft3 located main
deck forward. Rated at 60psi with
Crosby Griss / JOS-E-15-J relief
valve, 2” x 3” size with set pressure
of 62psi.
Two Surge Tanks for
barite/bentonite. SM type 703 ft
capacities. Working pressure of
60psi.
Section 4/2 of the
ABS Rules for
Building and
Classing Steel
Vessels
Must be available
during all periods when
the well is susceptible
to loss of control after
top-hole section.
Must survive rated
pressures and rig /
marine environment.
Barge Engineer
& Mechanic
Weekly checks
and central
monitoring
alarm system.
Reliability
Weekly PMS
and inspection
None
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 56 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
27. Gas/smoke/
heat detection
systems
Fire & Gas
Panel
To provide
forewarning of the
unplanned release
of toxic /
flammable gas
and presence of
fire before
concentration and
/ or intensity
achieves critical
levels in
designated areas
of the drilling
unit.
The F&G panel
provides a means
of monitoring
location of gas,
smoke and heat
sources on board
the rig and on the
Derrick.
H2S Monitoring system Marshal
5704 type. Sample points at bell
nipple, drill floor, shale shaker, mud
tanks and ventilation system. Alarms
in driller’s control room, Engine
Room, Mud Room, living quarters
and central areas. Separate from
general alarm. Central control panel
situated in Control Room.
Combustible Gas Monitoring system
Seiger/System 57 type. PPM sensors
located at Bell nipple, drill floor,
shale shakers mud tanks and
ventilation system. Alarms in
driller’s console, Engine room, Mud
room, Living Quarters and central
areas. Tied to general alarm. Central
Control panel situated in Radio and
Jacking Control room.
Fire/smoke detection system Thorn /
Termex 220 (or equivalent) type,
providing for smoke, heat and flame
detection in the Accommodation
Unit and PA alarm across the drilling
unit. Central Control Panel situated
in the Radio and Jacking Control
Room.
ABS and IMO
MODU
requirements,
SOLAS, and
UKOOA guidelines
EHS05 - 1995
Must be available
whenever drilling.
Detectors must survive
gas/smoke/heat
concentrations up the
alarm point.
All system components
must survive marine
environment.
Detectors must
annunciate their own
failure.
Electrical /
Electronic
Maintenance
Personnel
Maintenance,
testing &
calibration
according to
manufacturer’s
manuals. Self-
fault detecting.
Reliability
Weekly PMS
and inspection
Dependent upon
emergency power
supply (including
UPS).
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 57 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
28. Emergency
Response
Alarms,
Engine
alarms, bilge
water alarms,
PVT Gain/loss
alarm, Flow
alarm,
Monitoring
alarms
systems, etc.
To provide rig
personnel with
early warning of
potential unsafe
situations and
requirement to
respond.
Crane alarm (audible and visual)
warns of crane instability.
Watertight Door monitoring and
indication (provided locally and in
control room).
Trip tank Alarm alerts control panel.
Pit Volume loss/gain alarm (audible
and visual).
Mud Flow high/low alarm (audible
and visual).
Central Monitoring Alarm System
monitors Air Receivers, Raw Water
Tower Ring Main, Fuel Oil Day
Tank, Main Transformers, Engines,
Water Maker, Oily Water Separator,
Sewage Treatment Unit, Potable
Water, Bilge Level, Lube Oil Tank,
Drill Water, Dirty Oil Tank, Bilge
Holding Tank, Mud Contaminated
Tank, Engine Starting Air Receiver,
Mud Pit / Mud Pump Room pressure
and Bulk Air Compressor. Central
Alarm Panel located in the
Mechanical Workshop.
General alarm alerts personnel of
any potentially dangerous situation
for various emergencies via PA
system. Can be activated from
Control room and drill floor.
ABS & Class Must be available at all
times while drilling,
with very high
reliability.
Must survive long
enough when exposed
to the hazard or
accident that it is
annunciating, to alert
personnel.
Electrical /
Electronic
Maintenance
Personnel,
Mechanic,
Toolpusher and
Barge Engineer
Function tested
and calibrated
according to
manufacturer’s
recommendatio
ns and manual.
Self-fault
detecting.
Reliability
Weekly PMS
and inspection
Power generation
but:
Fire system has
24V battery
backup, Engines
run from dual 24
Volt supply
(redundancy),
Alarm System
24V backup
through fire
system. UPS
through
Gaitronics
interfaced to
broadcast alarms.
Bilge water
alarms on 24V
backup supply.
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 58 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
29. EX/IS
equipment
within all
Hazardous
Areas
To function
without causing
ignition of
flammable
releases.
Hazardous zone areas are defined in
accordance to the ABS & IMO
MODU Code requirements.
(Reference is to be made to drawings
C033-E100.01 & 02).
See Hazardous Area Plan Drawings.
Classified in accordance with the
applicable Regulatory Body
requirements.
ABS MODU Code /
API RP502, NEC
Articles 500, 501,
502 and 503
Must survive marine
environment and
engulfment in
hydrocarbon gas /
vapours.
Electrical
Maintenance
Personnel
Reliability
Inspections and
repairs carried
out weekly. IEC
Standards used.
Weekly PMS
and inspection
None
Remedial Action
= complete WA
HAC drawings
30. Poor boy
degasser and
shakers
degasser
(including
vent)
To separate
entrained gas from
drilling mud and
vent the gas to a
safe place
Technics Offshore Engineering
05065 (or equivalent) Gas/Mud
Separator. 30 ft long with outside
diameter of 48”. Primary discharge
location 10 ft above derrick A-frame.
Not tied to burner system. Vacuum
breaker and pressure gauge.
Calculated gas throughput 30 mmscf.
Two Derrick Vacu Flo 1200 (or
equivalent) degassers. Rated
capacity of 1200 US GPM. HALCO
(or equivalent) 2500 Supreme Feed
Pump. Ingersoll rand V255/5 HP
Vaccum Pump.
Section 4/2 of the
ABS Rules for
Building and
Classing Steel
Vessels
Required for main
power generation and
for refuelling. Must be
reliable in terms of not
leaking.
Must survive flow of
drilling mud and
released gases
Mud System
Operator,
Pumphand,
Derrickhand &
Driller
3rd party
checks every 6
months.
Reliability
Monitoring,
Gas Alarms,
weekly
inspections &
Weekly PMS in
Amos
None
31. (Mud Pits)
Ventilation
systems
To prevent build-
up of flammable
vapours in the
mud pits room.
Compartments served by two Hison
(or equivalent) supply and two
exhaust fans. Negative pressure of at
least 50 Pa is maintained against
neighbouring Mud Pump Room. All
ABS and IMO
MODU regulations
Must be available
whenever the tank is
pressured or receiving
pressure. Target
reliability = 100%
Maintenance
Department
Room pressure
differential loss
monitoring.
Electric power
(with back-up
from emergency
generator)
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 59 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
fans have oversized motors to cater
for 10% overloads. Must survive flow of
air and gas (without
being an ignition
source).
Reliability
Weekly PMS in
Amos
32. VHF Portable
radios,
Helicopter
VHF,
Inmarsat, SSB
Marine radio,
Intercom
system,
EPIRB,
antennas,
transceivers
To provide
internal and
external
communication
capabilities to and
from the drilling
unit, especially
during
emergencies.
Provisions sufficient to address full
internal rig communication through
PA system and handheld devices and
all relevant Marine and Air channels.
Meets Regulatory Body
requirements.
ABS MODU Rules
/ Class
requirements
Most must survive
major accident events,
as they will be required
for effective emergency
response. Also, must
survive environmental
and rig working
conditions found
offshore.
Barge Engineer
and Radio
Operator,
supported by
Electrical
Maintenance
Personnel
Reliability
Weekly PMS
Manning of
radio room 24/7
and function
tested as part of
weekly drills.
Emergency power
/ UPS and/or
individual device
batteries.
33. Emergency
Generator,
Switchboard
To provide
emergency power
supplies &
lighting to
essential areas and
systems of the
drilling unit.
One Caterpillar 3412 TA Engine
with a maximum output of 830HP
powering a Stamford Newage
HCM534F2 (or equivalent)
generator, creating 500kW at 480V.
480VAC Emergency switchboard
208/120VAC Emergency Lighting
Switchboard distributes
208/120VAC 3 phase power to
emergency lighting and other power
panels.
ABS MODU Rules
/ Class
requirements
Any unavailability
must be covered by
PTW controls.
Reliability in
accordance with the
manufacturer’s
specifications and
maintenance routines.
Needs to survive all
credible major accident
events, as far as
practicable and for as
long as emergency
power is required.
Maintenance
Department Reliability
Tested and
inspected at
least once each
week through
operation under
load for a
minimum of
two hours.
No
interdependency
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 60 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
34. Emergency
Shut Down
(onboard
ESD) systems
To shut down,
Hull Ventilation,
Main Generator,
Emergency
Generator &
Quarters HVAC.
Independent from other alarm and
shutdown systems. ESD Stations
located in OIM Office and Driller’s
Cabin. ESD switches located drillers
control room, OIM/Rig Manager’s
office, main deck port/starboard
forward, radio control room and
emergency generator room. Only
designated battery systems will
remain operational after Shutdown.
ABS MODU Rules
/ Class
requirements
Must be available
whenever the PTB is
required
Must still be able to
effect shutdown when
engulfed in gas or
smoke.
Shutdown buttons must
survive external rig
conditions.
Electrical
Maintenance
Personnel
Certification
and annual
inspections.
Reliability
Weekly PMS
Amos
No
interdependency
35. Fire Dampers The seal
ventilation and
AC ducting to
prevent the
migration of gas,
smoke to other
areas of the
drilling unit, the
living quarters in
particular.
Fitted on air conditioning ducts
passing through A0 or A60 class
boundaries in compliance with
Regulatory Body requirements.
Activated automatically by thermal
fuse link or CO2 flooding (galley
area) and can be manually closed
through ESD system.
ABS MODU Rules
/ Class
requirements
Target availability and
reliability for the
system as a whole =
100%. Individual
alarms may be less
depending on amount
of redundancy.
Fire dampers should
survive the rating of the
bulkheads through
which they pass.
Barge Engineer
& Camp Boss
supported by
Maintenance
Department
Reliability
Function tested
weekly.
Power Generation
and distribution
systems:
Controlled
through fire panel
in Control room
with power from
emergency
generator set and
24 Volt backup.
36. Helideck
Foam system
For the purpose of
extinguishing
helicopter &
helifuel fires.
2 Unitor (or equivalent) Foam
monitors installed on Helideck. 50
USG AFFF Foam Concrete Stored.
CAP437 Must be available for
all helicopter refuelling
Must work under
helideck fire
conditions.
Barge Engineer
and Bosun
Full function
tests every 6
weeks.
Reliability
Weekly PMS in
Amos
Interdependent on
electric supply
from the
emergency
switchboard and
seawater mains as
back-up supply.
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 61 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
37. Fixed fire
extinguishing
systems
For the purpose of
extinguishing
large Class B fires
in enclosed
spaces.
Engine room, Paint Locker,
Emergency Generator room,
Electrical room and Galley range
hood (exhaust duct) protected by
CO2 Flooding. Controlled from main
control panel and remotely from
entrance to areas. Central CO2 bank
located in the aft / port auxiliary
machinery room for Engine Room
protection. Provision of three sets of
CO2 release cabinets. Other areas
protected by single release cabinet.
Manual Water Deluge system
installed on Drill Floor.
ABS MODU Rules
/ Class
requirements
Required in all
hazardous zones.
IS/EX features target
reliability = 100%
Must be able to survive
long periods of system
inactivity, diffusers and
piping must be able to
withstand high
temperatures associated
with Class B fires in
enclosed spaces.
Barge Engineer
& Fire Team
members,
supported by
Mechanic
Tested and
inspected at
least once every
12 months by
the appropriate
Regulatory
body approval
methods.
Replaced as
required upon
expiry.
Reliability
PMS Month
inspection and
recorded tag
No
interdependency
other than the
charged bottled of
fire suppressant.
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 62 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
38. Portable fire
extinguishers
Provide a highly
portable fire
fighting capability
for combating
small Class A and
B fires in all areas
of the drilling
unit.
Quantity (total) no: 71
CO2 – 8 x 5.0kg, 1 x 6.7kg, 2 x 9.0kg
Dry chemical – 47 x 6.0kg, 2 x
22.5kg
Foam – 1 x 45ltr
ABS MODU Rules
/ Class
requirements
Must be available
whenever drilling with
risk of gas in mud.
Target reliability =
100%.
Must be able to survive
offshore environment.
Barge Engineer
& Fire Team
Leaders
Tested and
inspected at
least once every
12 months by
the appropriate
Regulatory
body approval
methods.
Reliability
PMS Month
inspection and
recorded tag
No
interdependency
39. Fireman suits To provide
thermal protection
to personnel
engaged in fire
fighting activities.
Aluminized 6 oz Nomex Approach
Suits, with Moisture and Steam
Pouch in Back to accommodate
Breathing Apparatus, Barrier Liner,
Complete with Jacket.
Firemen’s Yellow Nomex Outer
shell Coat with Thermal Liner and
Vapour Barrier, 35” long.
Aluminized 8.5 oz Nomex Firemen’s
Coat Outer shell with Nomex
Aramid Batt quilted to Nomex
Facecloth Thermal liner and Comfort
Zone on E-89 Moisture Barrier, 35”
long.
SOLAS 74/81 Must be available
whenever drilling with
risk of gas in mud.
Target reliability =
100% but gas sensors
would alert any
problem of gas build-
up in any case.
Must be able to survive
the temperatures of the
fires that are being
fought.
Barge Engineer
& Fire Team
Leaders
Reliability
Pre-use
inspection for
condition and
functionality.
Maintenance
According to
manufacturer’s
recommendatio
ns.
Inspection as
part of weekly
drill.
No
interdependency
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 63 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
40. Breathing
Apparatus
To provide safe
breathing air for
personnel engaged
in fire fighting
and search &
rescue activities.
Four Unipack (or equivalent)
Positive Pressure breathing
apparatus, each with approx. 30 min
of breathable air. Two situated below
Helideck, and two on the roof of the
LQ.
10 minute ELSA Escape Breathing
Apparatuses.
Ska-Pak 4.5 10/15 minute SCBAs
for Emergency Egress.
ABS MODU Class
and NFPA
Standards for
SCBA for FiFi /
NIOSH / SOLAS
Must be able to survive
the temperatures of the
fires that are being
fought, and rough
handling associated
with fire fighting
activities, search &
rescue activities.
Barge Engineer,
Toolpusher &
Fire Team
Leaders
Reliability
Monthly
inspections
No
interdependency,
other than
charged air bottles
(WA has a refill
compressor).
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 64 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
41. Firewater
pumps, ring
main and hose
stations
To provide fire
fighting and
cooling water in
all fire scenarios
that cannot be
dealt with by
portable
extinguishers or
CO2 flooding.
Main seawater supply pumped by
three model 12 EBM-3A pumps each
with capacity of 2200GPM mounted
on the legs.
Three S&N Seawater Pumps (or
equivalent) with a capacity of 52
bbl/min each @ 40-45psi and one
Halco (or equivalent) 2500 Supreme
with a capacity of 26-35 bbl/min @
30-17psi. Supplies sprinkler system
and water lines to burner booms.
Two vertical centrifugal pump
Allweiler NIM80-400/02 type with
500 US GPM output each, located in
aft machinery room.
Hydrants are positioned so that any
point be reached with a single hose
from two hydrants. There are 44
hydrants in total.
Hoses vary between 30 ft and 50 ft
in length. Max diameter is 1 ½” in
accommodation.
SOLAS & ABS
Class
Target availability and
reliability = 100% for
the overall function,
but there is redundancy
amongst individual
items.
Must be able to operate
under black out and
survive the offshore
(salt water)
environment.
Barge Engineer,
supported by
Maintenance
Department
Central
Monitoring
Alarm System.
Reliability
Visual and
Weekly PMS in
Amos
Main firewater
pumps dependent
on main electric
power.
Emergency
firewater pump is
powered from the
emergency
generator /
switchboard.
Water can be
drawn from the
drill water tanks if
necessary. All
down-stream
systems are
dependent on the
pumped water
supply.
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 65 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
42. Medical
equipment &
supplies
To provide
frontline medical
treatment.
First Aid Kits, Blood borne
pathogens kits, Burn Kits, CPR Kits,
Drug Testing Kits, Dermatological
creams, foams and cleansers &
stretchers provided. As required by
Regulatory Body requirements.
Regional Medical
Guidelines and
Protocols (ABAN
QHSE, Health
Policies HLT
200.00 & HLT
230.00)
100% available for
treatment of injured or
sick personnel.
Medic Record keeping
by Medic.
Monthly
updates
submitted to
OIM on
controlled /
dangerous
drugs. Regular
inspection and
servicing of
first aid kits and
eyewash
stations.
Reliability
Weekly PMS
check on the
medical
equipments
No
interdependency
43. Lifeboats and
accessories
To transport
personnel away
from the drilling
unit in incidents
of major fire, or
loss of rig stability
or buoyancy.
Must be self-
contained.
Four Norsafe/Jiangyin JYN80F
lifeboats, 2 located on the port and 2
located on the starboard side. Each
lifeboat has a 60-person capacity
(200% POB capacity in total) and is
equipped with fire protection,
radio/SART, water spray and
compressed air system.
Food rations and pyrotechnics are
provided as per LSA code.
SOLAS (1974 +
amendments to-
date)
100% reliable when
required Must be able
to pass through burning
oil on water and dense
smoke. Must survive
submergence of rig.
Barge Engineer
supported by
Maintenance
Department
Reliability
Weekly PMS
on the lifeboat.
Inspected and
cleaned once a
week, fuel
change-out
annually,
rechargeable
batteries
Accessories are
taken to include
the lifeboat davit,
release
mechanisms.
Dependent on the
davit launching
safety systems.
(Electric power is
only required for
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 66 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
2recharged
weekly,
operability
tested weekly as
part of drills.
retrieval, not for
launching).
Also dependent
on fuel (Diesel
stored in onboard
tanks, amount to
meet Class
requirements).
44. Life rafts and
accessories
To transport
personnel away
from the drilling
unit in incidents
of major fire, or
loss of rig stability
or buoyancy,
when the TEMSC
are not available
for any reason e.g.
major
accommodation
fire. Must be self-
contained.
Six RFD (or equivalent) throw-over
inflatable survival life rafts. Each has
a capacity for 20 persons, and they
are located on the port and starboard
of the Main Deck.
SOLAS 74/83 &
ABS MODU Class
Target availability =
100% however,
maintenance of
ductwork will
determine actual
availability. Target
reliability = 100% It
must survive
submergence of rig.
Barge Engineer
supported by
Maintenance
Department
Annual
inspection and
servicing.
No
interdependency
(throw-over side)
45. Launching
systems for
lifeboats
To ensure the
lifeboats can be
lowered from
height in a
controlled manner
and released once
afloat.
Four standard davit-launching
systems with offload hooks.
SOLAS & ABS
MODU Class
Must be available
during all SIMOPS
with target reliability =
100%
Must be able to
‘survive’ full weight of
fully occupied lifeboat,
reasonable shock
Barge Engineer
supported by
Maintenance
Department
Launching
winch
equipment
inspected once
every 3 months.
Reliability
Lowering line,
shackle or hook
and lifting lugs
(electricity
required for
recovery).
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 67 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
loading and marine
environment. Weekly PMS
on the lifeboat
by test the
winch
46. Lifejackets To provide
emergency
personal floatation
for personnel in
the sea.
One lifejacket per person located in
LQ cabins and 120 located in
lifejacket boxes on lifeboat
platforms. Lifejackets are
SOLAS/MCA (UK) & CE approved.
SOLAS and ABS
MODU Class
Must be able to
function as personal
floatation until arrival
of rescue craft.
Barge Engineer
& Camp Boss Reliability
Weekly checks
and drills
No
interdependency
47. Helicopter
rescue gear
To provide
emergency
personnel with the
specialized
equipment to
effect rescue of
helicopter crash
victims on the
helideck.
Helideck rescue equipment includes:
Aircraft Axe, Large fireman’s rescue
axe, crowbar, heavy duty hacksaw
with spare blades, grapnel hook,
quick release knife, bolt croppers,
fireman’s outfit and CO2 lance. The
toolbox is located next to the
helideck.
CAP437 Available whenever a
helicopter is
approaching, on the
helideck or departing.
Reliability in
accordance with the
manufacturers’
specifications and
routine maintenance
activities.
Must be able to survive
Class B fire for the
duration of helicopter
rescue efforts.
Barge Engineer Reliability
Inspections
prior to each
helicopter
arrival.
No
interdependency
48. Fast rescue
boat
To provide a
means of
retrieving persons
from the sea.
One Norsafe / 15 Merlin (or
equivalent) FRC, stored on roof of
accommodation block. Equipped
with an inboard diesel engine.
SOLAS Availability must be
100% of the time and
locations in accordance
with rig Safety Plan.
Barge Engineer,
supported by
Maintenance
Department.
Tested once
every two
months in-line
with man
Only dependent
on fuel (petrol
stored in onboard
tanks, amount to
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 68 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
Reliability is according
to the manufacturers
maintenance and re-
certification
specifications.
Must be able to survive
launching on a
relatively rough sea
and retrieval by a crane
(in case weather
conditions do not allow
davit recovery).
overboard
drills. Annual
survey.
Reliability
Weekly PMS in
Amos
meet Class
requirements)
49. Derrick
escape device
To provide a
means of escape
for one person
from the
monkeyboard in
the derrick.
One derrick escape chute, type DH-
SALA P-100 (or equivalent).
Equipped with two SALA (or
equivalent) safety belts and Derrick
ladder safety lines.
One Rollgliss Derrick Emergency
Escape Device Vertical Descent,
Low Speed, w/115 Ft. of 3/16”
Stainless Steel Cable, w/Snap Hook,
Auto Retract.
One Rollgliss Derrick Emergency
Escape Device Sloped Descent,
w/200 Ft. of 3/16” Stainless Steel
Cable, w/Linkage, Braking Trolley
and Suspension Bars, High Speed.
OSHA 29 CFR
1926.501(a)(2) &
CSA Z259.2-99
Standard
Availability must be
100% of the time and
locations in accordance
with rig Safety Plan.
Reliability is according
to the manufacturers
specifications.
The device must be
able to survive and
extreme marine
environment.
Toolpusher and
Tourpusher
supported by
Maintenance
Department
Periodic
inspections and
tests.
Reliability
Also covered in
weekly
DROPS.
No
interdependency
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 1 Page 69 of 74
DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
50. Lifebuoys To provide
buoyancy for
personnel in the
sea, until rescued.
Ten strategically placed Canepa &
Campi / Ligure (or equivalent) Life
Ring Buoys.
Two have smoke systems that react
when in contact with seawater, and
eight have lights, of which four have
140 lifeline throwers.
SOLAS & Class
(LSA certificates)
To be available
whenever drilling is
on-going.
Must be able to survive
in marine environment
and being thrown
overboard. Line to
survive stress of
pulling the MOB back
in.
Barge Engineer Reliability
Weekly
inspections.
No
interdependency
51. Cold store for
DD8 food
supplies
To preserve food
in a safe condition
for subsequent
human
consumption.
Two R404a refrigerant fan coil units,
one in the chiller and one in the
freezer room and two condenser
units on the quarters roof. Capable of
maintaining chiller room at 2°C and
freezer room at –23.3°C.
Compliance with
BS EN 441
Target availability =
100%
Target reliability =
100%
Suitable for offshore
environment.
Chief
Electrician
supported by
Maintenance
Department
Reliability
Daily use by
catering crew.
Main power
supplied through
emergency
generator
switchboard.
52. Potable water
maker,
sewage
treatment
To provide safe
potable water for
all POB.
One Alfa Laval, Model D-PU-36-
C100 (or equivalent) waste heat
Water Distiller rated at a maximum
capacity of 12,000 US GPD and a
Haten Boer Water / GSW3 (or
equivalent) UV Sterilizer.
EEC Machinery
Directive and EN
292-1/2 standards
Suitable for offshore
environment
Medic &
Maintenance
Department
Monthly
bacteria and
quarterly
mineral analysis
of the potable
water.
Reliability
Monthly water
sample test to
town done by
the clients
Seawater intake
must be free of
harmful products,
and particulates
etc. Main electric
supply required
for the water
maker.
DD8 HSE Case ABAN-DD8-HSE Case-P2
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DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
53. Mast cameras
and derrick
anti-collision
system
To prevent
collision between
the travelling
blocks and other
equipment in the
derrick.
Three Sony FCB-IX45AP (or
equivalent) derrick mast cameras
located at fingerboard level on the
derrick with zoom and panning
capabilities, controlled from the
Drilling Station. Each Receiver pre-
installed in explosion proof
Enclosure complete with suitable
power supply.
Alternative anti-collision system
control speed of raising and lowering
blocks as preset limits are
approached.
API standards Must be able to
withstand offshore
environment
Driller &
Electrical
Maintenance
Department
Reliability
Daily
monitoring.
And part of
Monthly PMS
Main electrical
supply
54. Drains and
bilge system
To safely drain
and dispose of
leak and spill
liquids, rain water
and fire water.
To prevent build
up of pools of
flammable liquid.
To prevent rig
loss of stability
and buoyancy
Bilge system - refer to Section 3.17
Deck & drill floor drains systems -
refer to Section 3.18
Helideck drains system complying
with clause 7.2 of CAP 437
ABS MODU code
CAP 437
Vessel drain available
at all time
Helideck drain
available whenever
helicopter is present
and during helideck
fire fighting equipment
testing.
Barge Engineer
supported by
the mechanical
department
Reliability
Daily
monitoring.
Bilge pumps, Oily
water separators
55. Controls for
explosives
To prevent
accidental
detonation of
explosives, to
jettison explosives
Bunker with jettison system:
The explosives are stored in
specially designed protective
magazines (the bunker) mounted on
supporting skids that can be
ABS MODU code Available whenever
explosives are required
to use or stored
onboard
Barge Engineer ABS inspection
Reliability
Inspected by the
clients third
None
DD8 HSE Case ABAN-DD8-HSE Case-P2
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DD8 Safety-Critical Equipment Register
No. Equipment
Name or
Title
Suitability
Criticality
Functionality.
Specifications Governing
Standard(s)
Availability
& Survivability
Responsible
parties
Reliability
Means of
Verification
Interdependency
overboard in an
emergency
mechanically activated to jettison
magazines overboard.
party as the
explosives
belong to them.
56. Corrosion
protection
system
To prevent
corrosion of all
major structures
and tanks.
Sacrificial anodes located on the
spud can, legs, sea chests, pre-load
tanks
ABS MODU code
and IADC
Must be available at all
times except when the
rig is in dry dock
Barge Engineer
supported by
the mechanical
department
Annual
inspection
Reliability
Metering
reading and
PMS
None
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4.4 DD8 / Combined Operations (Drilling and Production)
The following below is the list of SCE used during the combined operations on a platform, fire
extinguishers, and fire hoses, hose connection from the rig for deluge operations on the
platform, emergency instrumentation air and power from the rig.
25 men life raft and 25 lifejackets, T-card system to work on platform, VHF radios, PA system
for communications, Emergency lighting for the working area. Stand by boat provided by
client, Emergency shutdown systems, Gas detection system. Fire detection system but not
limited to. (Refer to CPRA of client).
Please note that during any skidding operation, jacking operations or any heavy lift operations
and rig moves the combined operations or production operations are stopped and suitably bled
off
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5 . H S E - C R I T I C A L F E A T U R E S
Aside from the HSE-Critical Elements listed above, DD8 has a number of features that are critical
to preventing and/or mitigating the risk of potential Major Accident Events for the drilling unit.
These HSE-Critical features include:
DD8 is designed, constructed and maintained, as evidenced by its certification, to the
highest appropriate international standards for its designed function of supporting offshore
petroleum development – ref. Section 3.2 above
DD8 is able to accommodate loads as specified in Section 3.6 above
DD8 is able to survive extreme weather / met ocean conditions as specified in Section 3.7
above
DD8 layout features maximum separation of the accommodation from the drill floor and
multiple escape routes from all areas (reference may be made to DD8 Fire & Safety
Drawing No. J134).
Temporary Refuge in the event of emergencies is effectively provided as described in
Section 6 below. The accommodation unit incorporates non-flammable materials.
The layout and provisions of emergency systems on-board DD8 enable the OIM and his
Senior crew members to maintain command and control throughout any reasonably
foreseeable emergency, including provision of temporary refuge for all POB pending
orderly evacuation - for all identified potential Major Accident Events (ref. Section 6
below).
Furthermore, DD8 is equipped with:
Comprehensive monitoring and automatic alarm systems, covering:
o stability of the MODU when afloat and when elevated
o water-tight doors open
o all drilling and well control parameters, including derrick loads, mud flows &
volumes, BOP and Diverter
o flammable & toxic gas detection
o smoke, heat, fire detection
Extensive on-board communications, audio-visual alarm systems and safety signage
throughout the drilling unit
Comprehensive fire protection and fire fighting systems including both passive (fire-rated
bulkheads and deck heads, non-sparking equipment to prevent ignition of leaks) and active
(including dry power, gaseous and water and foam based systems) throughout the drilling
unit
Comprehensive marine navigation and external communications systems
Lifesaving equipment for the entire maximum POB (in full compliance with SOLAS
regulations)
Multiple redundant alarm, command, control & communications facilities and multiple
redundant emergency evacuation systems.
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6 . T E M P O R A R Y R E F U G E
DD8 was designed in accordance with ABS and IMO MODU rules (Refs. 6, 7); as such its design
does not include a formally designated Temporary Refuge (TR) of the type specified in Shell
DEM2 Process Safety Manual (Ref. 9). However, DD8 does have facilities that meet the intent of a
TR as originally set out in Cullen’s report into the Piper Alpha disaster (Ref. 8) and translated into
engineering requirements in Shell DEP 37.17.10.11 (Ref. 10), which defines a TR as “a place or
places where personnel will be adequately protected from relevant hazards while they remain on an
installation following a major incident, and from where they will have access to the
communications, monitoring and control equipment necessary to ensure their personal safety, and
from where, if necessary, safe and complete evacuation can be effected.” The places on DD8 that
meet these requirements comprise the Accommodation block and its external muster and evacuation
areas on each side and the helideck – as depicted below.
DD8 Accommodation (LQ) is located as far away as possible from the Drill Floor & Derrick, is
protected with A60 fire rated walls and closable ventilation dampers. It is equipped internally with
fully redundant command, control and communications systems. Outside on the walkways
TEMPSC lifeboats with capacity for 100% of the maximum POB each side are provided (200%
POB total capacity) and at main deck level liferafts are similarly provided for all personnel each
side of the LQ. The CAP 437 compliant helideck is located forward of, and shielded by the LQ.
As part of the HEMP work that underpins this HSE Case, DD8 TR requirements and provisions
have been assessed, qualitatively by the crew and separately by technical study, against all credible
Major Accident Events for the MODU. This TR assessment work resulted in a small number of
agreed remedial actions, including to provide active fire protection for the LQ walkways and
lifeboats – as documented in Part 4 (HEMP) and Part 5 (Action Plan) of this HSE Case.
DD8 ‘TR’ Areas:
Helideck for H2S emergencies
LQ external walkways / lifeboat
stations
LQ box for command & control
functions and for any scenarios
where the external areas on both
sides are deemed unsafe
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7 . H S E - C R I T I C A L P R O C E D U R E S A N D T A S K S
The work of identifying and analysing potential Major Accident Events (MAE) for DD8, as
described in Part 4 of this HSE Case, resulted in the formal recognition that certain equipment,
structures, systems and activities of DD8 and its crew are critical to preventing, and/or mitigating
the risk of, MAE.
These HSE-Critical Elements (SCE) and Activities (SCA) are listed in Section 4 of this Part 2, DD8
HSE Case and in Part 3 respectively.
In order to ensure that all SCE and SCA are effectively maintained / carried out, written procedures
are included in DD8 management system and detailed maintenance tasks are set up in DD8
electronic Preventative Maintenance system (AMOS). Procedures and Tasks that relate to
maintaining SCE or carrying out SCA are, by definition, HSE-Critical.
In compliance with the EP 2005-0310 HSE Case model, HSE-Critical Procedures and Tasks for
assuring / maintaining DD8 SCE are presented here.
7.1 Safety Critical Procedure (Operations Procedures)
ABAN management system includes a Safe Operating Manual, a Marine Manual and a
Drilling Manual, which all together contain over 160 written operating procedures applicable
for DD8, many of which relate to one or more of the Major Accident Hazards defined for DD8
in Part 4 of this HSE Case.
These procedures given below are referred to depending on the rig operations, and are
reviewed accordingly.
Management and Review on the Safety Critical Procedure: is done depending on the operations
planned and are documented in the daily reports for well control and for Marine procedures as
an example: the location has to be approved by the Insurers who study the suitability of the
location with respect to the rig, pre rig move meetings are held and documented and signed off.
Which includes all the points mentioned below for the marine and to ensure that we operate it
as per the Marine Manual and the Tow Master , Insurance Rep and the Barge Master and OIM
ensure that it is followed. For the HSE Critical Task can be refer to Part 3 Section 4.3
If any change in the operation plan or client requirement an MOC is signed off.
The procedures cover:
‘Safe Operating Procedures’:
o Drilling, Drill Floor and Well Control activities
o Testing / Pressure testing equipment
o Hygiene, House Keeping, Storage and control of Perishable Materials
o Personnel and Cargo transfers
o Anchor handling, sea bed surveys, bunkering
Marine Procedures:
o Certification, regulations and surveys
o Rig moves, Location approvals, moving into fixed structures, mooring
o Stability calculations
o Vessels alongside, vessels in close proximity
o Weather forecasting
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Drilling Procedures:
o Hand-overs, check lists and signals
o Derrick and Drill Floor operations – handling and maintaining equipment
o Drilling, well construction, completion and work over operations
o Wire line and coiled tubing operations
o Well Control activities.
7.1.1 Safety Critical Procedure – Identified: The process to manage/Document control system and review cycle validity period with process of retention
Safety Critical Procedures are identified.
The procedures cover: Process to manage Document control system
Review cycle
Validity period with
process of retention.
‘Safe operating Procedures’:
o Drilling, Drill Floor and Well
Control activities SOP,s , DSI, Client Well control Manual.
Aban Operating
procedures and Well control Manual
Review 5 yearly,
documents validity 5 years
, updated regularly . And change is done as per Aban
MOC procedures.
o Testing / Pressure testing
equipment
UT every year, Pressure testing every 14 days limited to a max of 21 days, two yearly inspections ,
Certification every 5 years.
Aban Well control Manual procedures. Client well
control Manual. Contract.
Pressure Test charts are kept for 3 years. COC of
the equipment is live
document updated every
change in any part of the
equipment.
o Hygiene, House Keeping,
Storage and control of Perishable Materials
Inspection of items when received, daily and weekly inspections by Medic and regular safety
meetings, yearly medical checkup of food handlers
.Maintenance of Chiller and Freezer as per AMOS.
AMOS PMS system.
Contractor Six Monthly
o Personnel and Cargo transfers
6 monthly lifting gear inspections , Crane
maintenance as per Aban PMS ( AMOS ). 5 yearly load tests as per Class requirement.
AMOS certification Schedule, BE monthly
reports and rig
Certification updates.
5 years and updated.
o Anchor handling, sea bed
surveys, bunkering
Rig move meeetings, at shore as well as rig with all parties like tow master, client tow master, insurance
surveyor , OIM and BE, pre rig move site
inspections and bore hole logs analysed and COA from insurance, adhering to bunkering procedures,
pre use checklists
Rig Move COA, Rig move meetings and procedures
signed off,
Every rig move. Rig move
documents are kept for 5 years on the rig and stored
and then sent to shore for
storage.
Marine Procedures:
o Certification, regulations and
surveys
inspections done 6 monthly / yearly /bi annualy and 5 yearly as per class ABS requirements to the satisfaction of the attending surveyor.
Certification master list on the rig managed by BE and kept at Spore with the Marine Manager
lifetime of the rig. Reviewed annually.
o Rig moves, Location
approvals, moving into fixed
structures, mooring
Rig move meetings, at shore as well as rig with all parties like tow master, client tow master, insurance surveyor , OIM and BE, pre rig move site inspections and bore hole logs analysed and COA from insurance,
rig move document, Reviewed every rig move and kept for 5 years.
o Stability calculations
daily and reported to all .soundings are given to BE, who puts in the figures and calculates the amount of variable is less than the allowed loading on each leg. ballast as required.
rig move calculation programme, stability programme
reviewed every day, and reviewed by marine manager and tow master and insurance prior to rig move including the preload programme, stored for atleast 5 years.
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o Vessels alongside, vessels in
close proximity
Boats call the rig announcing the ETA with the
cargo as per the requirement and loading notes, tied
up to buoy and come close otherwise mostly DP
vessels are in use. station keeping and in close
contact with radio room and crane operator and BE. Stay upwind of dry bulk cargo transfer
Marine operating
procedures. Client Marine
procedures. Daily barge
reports file.
Radio room log book ,
showing call and tie up and
cargo start and end times,
yearly.
o Weather forecasting
daily basis received and if extreme weather is
forecasted sent by Aban Singapore marine
manager. Two sources are used one from Aban and one from Client for rig moves and extreme weather
like Fugro and Metaocean.
email and contracted and during the rig move two
independent forecasts are
checked for better clarity
Weekly / monthly records
kept .
Drilling Procedures:
o Hand-overs, check lists and
signals
driller and crew handovers, Checklists and audits,
PMS for the day, Drilling safety instructions.
Signals are used when necessary like navigation lights during moves
Barge Engr / OIM have the
reports as required. Rig document . 5 yearly.
o Derrick and Drill Floor
operations – handling and maintaining equipment
DSI for drillers signed off by OIM and DSV, and
then handed over to floor by Tool Pushers for operations. Handling equipment go for 6 monthly
inspection and daily use pre-checklist. Maintenance
is done as per AMOs schedules and when any breakdown happens.
Amos for equipment
maintenance. SOP and JRA
5 years
o Drilling, well construction,
completion and work over
operations
pre spud meetings, pre operation meetings, morning conference calls, AAR, end of well reports,
ABAN & Client Ops Manuals
5 years
o Wire line and coiled tubing operations
Pre job meetings, JRAs and pre tour meetings and
pre job meetings, regular hole fill up monitored.
TPW checked and pressure tested
Client manuals and standards.
5 years
o Well Control activities.
Regular drills are help, trip drill, strip drill, pit drills, equipment draw down tests and function tests
are done and if situation demands follow aban
procedures of shut in calculate pressures and kill well, always ensure two barriers in place for process
safety. divertor function tests and pressure tests
also.
Aban Well control manual
and client PCM,
every change in BOP , on installation and every 14
days , kept in files and also
5 yearly coc.
7.2 Rig-specific Procedures
In addition to the above corporate procedures, DD8 maintains a set of additional rig-specific
procedures and equipment operating and maintenance manuals. These address use and/or
maintenance of all equipment on-board including the HSE-Critical equipment listed in Section
4 above.
The full list of procedures is included in Part 3 of this HSE Case, and as such is not replicated
here.
7.3 Maintenance Tasks
DD8 uses the AMOS Preventative Maintenance (PM) System, as described in Reference 13.
HSE-Critical Maintenance Tasks set up within ABAN / DD8 AMOS cover maintenance of all
SCE listed in Section 4.3 above, as well as many SCA e.g. Drill Floor & Derrick inspections.
The full catalogue of DD8 maintenance tasks relating to SCA and SCA is extensive and is
therefore not reproduced here. However, an AMOS output report of all DD8 maintenance
tasks (running to over 200 pages of single line items) has been generated to demonstrate the
comprehensive coverage of DD8 maintenance requirements within the PM system, hyperlinked
here. Please also see Reference 13. Information within that listing is presented in the
following fields:
1. Component Number – this is a unique equipment identification number, of which the first
three digits represent the equipment group (e.g. 313 for well control equipment), followed
by another 3 digits that represent the type of equipment (e.g. 057 for electric motors),
followed by 2 more digits for the equipment sub group
2. Name of the equipment
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3. Job Code – comprising a single letter that represents the job type (e.g. I for inspect, L for
lubricate) followed by a 3-didgit unique job identifier
4. Revision number (of the task as set up in AMOS)
5. Job Description – the task that is to be done on the equipment (based on OEM
recommendations and ABAN experience)
6. Frequency with which the job is (to be) done
7. Last Done – the date of the last performance of the job.
7.4 Emergency Procedures and Incident Investigation Procedures
These categories of procedures are HSE-Critical but do not contribute directly to maintaining
the SCE. As such, they are described (only) in the HSEMS section of Part 3 of this HSE Case,
not in this Part 2 Facility Description.
7.5 Engineering Management / MODU Modification
Since delivery in 2008, the ABAN DD8 has undergone no major modifications or upgrades.
Details of procedures and responsibilities are given in ISM 900.00 ABAN Management of
Change.
In terms of safety, quality and cost efficiency it is necessary to have a systematic approach to
the control of all elements affecting technical projects.
Controls shall ensure that the integrity of the operating unit is not adversely affected by any
technical modifications that correct inspection, maintenance, operating and verification
requirements are implemented and that pertaining documentation is updated accordingly.
Projects will be subject to the company management of change process. The proposed scope of
work is reviewed by suitably qualified personnel at Singapore Head office who shall involve
the supervisory personnel responsible the area of scope of work.
The OIM Manager is responsible for drilling and marine procedures and thus responsible for
changes and the implementation of change. Changes are carried out according to the Change
Procedure.
The approval authority is the Rig Manager .
Recommendations for change and corrective action arise from non-conformance reports and
specifically from accident investigations, emergency exercise reports and audits.
A report will identify the person responsible for corrective action who will prepare the request
and the change scope once the Rig Manager has determined whether existing procedures
should be revised or new ones initiated.
Changes may also be imposed by the regulatory authorities, Classification Society or the
Operator.
A change in procedures is considered to be complete when:
A written instruction has been issued and circulated to all staff concerned
When the change in procedures has been monitored and found to be effective
Tools utilised during the MOC procedure depending on the nature of the change include:
HAZID/ HAZOP etc;
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Engineering change procedures;
Variation order;
Work guideline revision, training/ procedures matrix, competence assessments;
Permit to Work, HMO (Hazard Management Outline) Tool-box Talk, and SMART Card
Change in people.
Change in operation procedures.
Business and commercial risk assessments;
Document Control;
Communication from External Interested Parties; and,
Management Review.
The OIM has to verify that any change affecting the rig has been carried out. A schedule and
deadline are set to implementation of the changes.
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8 . R E F E R E N C E S
1. Deep Driller 8 – KFELS Super B Class 246ft x 218ft x 25ft MODU Marine Operation
Manual, Keppel FELS Document no. B289-D017, Alt no. 1
2. Deep Driller 8 IADC Equipment List, Revision 1, December 2007
3. DD8 Drawings:
Title Drawing
number
Revision
indicator
Date
General Arrangement
Quarters Arrangement
(120 Men, Main DK & 1st Deck)
D006 3 15th Sept 2004
General Arrangement
Quarters Arrangement
(120 Men, 2nd
& 3rd
Deck)
D007 3 15th Sept 2004
Schematic & Arrangement
Hospital Call Alarm
E707 2 22nd
February 2005
General Arrangement
Outboard Profile
D001 3 15th Sept 2004
General Arrangement
Machinery Deck (5Ft Level)
D003 3 15th Sept 2004
General Arrangement
Machinery Deck (16Ft Level)
D004 3 15th Sept 2004
General Arrangement
Main Deck and Above
D005 3 15th Sept 2004
Machinery Arrangement
Deck Cranes
M102-10 2 23rd
Dec 2004
4. DD8 HSE Case Development 2010, DD8 Survey Report, Document No. PEWI-ABAN-DD8-
Survey-01, dated July 2010
5. International Convention for the Safety of Life at Sea (SOLAS), 1974, IMO
6. ABS MODU Code: ABS Rules for Building and Classing Mobile Offshore Drilling Units
7. IMO MODU Code A.6499(6): IMO Code for the Construction and Equipment of Mobile
Offshore Drilling Units
8. The Public Inquiry into the Piper Alpha Disaster, The Hon Lord Cullen, UK Department of
Energy, HMSO
9. Shell HSSE Control Framework PROCESS SAFETY MANUAL, DEM 2 – Process Safety
Basic Requirements, Version 2, December 2008
10. Shell Design Engineering Manual: Design of Offshore Temporary Refuges, DEP 37.17.10.11-
Gen., March 1994
11. Deep Driller 8 – Emergency Response Manual, Revision 1, April 2009, File Code ABAN –
DD8 – 001
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 5 Page 81 of 81
12. ABAN Singapore Pte Ltd. Shipboard Oil Pollution Emergency Plan (SOPEP) for Mobile
Offshore Drilling Unit Deep Driller 8 as required by MARPOL 73/78, Annex 1 Regulation 37
13. AMOS Onboard User Guide for ABAN, prepared by SpecTec Asia Pacific Pte Ltd., Revision
1, September 2009
14. Component Jobs List: Deep Driller 8/Maintenance 8/5/2010 (PDF file generated by AMOS
and hyperlinked here to the master electronic copy of this Case document)
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 5 Attachment A
Attachment A
DD8 Certification Survey Status List (example)
DD8 HSE Case ABAN-DD8-HSE Case-P2
Part 2 – Facility and Operations Rev 5 A1
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