Deep Driller 8 (DD8) - ABAN MS Cases/DD8/2015 FEB/DD8... · 2015. 2. 12. · DD8 HSE Case ABAN-DD8-HSE Case-Part 2 Part 2 – Facility and Operations Rev 5 Page 1 of 74 1. I N T R

DD8 HSE Case Part 2 - Facility and OperationsHard copies of documents are not controlled Document Owner: DD8 Rig Manager
ABAN Singapore Pte. Ltd.
Deep Driller 8 (DD8)
DD8 HSE Case ABAN-DD8-HSE Case-Part 2
Part 2 – Facility and Operations Rev 5 Revision Page
Revision Record
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
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
Part 2 – Facility and Operations Rev 5 Page 1 of 74
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 3 rd
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 –
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 3 rd
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
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
Elevating Drilling Unit, CDS
the Construction and Equipment
of Mobile Offshore Drilling
Units, 1989 with 1991
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 3 rd
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.
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).
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
o Pulling old tubing
o Well Stimulation
o Cementing repairs
o Seal perforations
Construction support activities:
o Conductor driving
o Heavy lifting
Refer to Section 3.4 for DD8 operational limits.
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, 5 th
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.
quarter
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
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
Plan and Elevation drawings of DD8 are provided below/next page given
Leg spacing (centre to centre):
- Transverse (ft) : 142
- Longitudinal (ft) : 129
Spud Cans: 3
Spud can diameter/bearing area (ft)/(ft 2 ): 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
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 +
Max rotary load kips: 2,000
Max setback load kips: 1,210
Accommodation for maximum number
120
20
approvals.
3.1.1 Plan Elevation drawing of DD8
DD8 Stbd Elevation View
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.
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”
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
De-ratting of Fumigation Exception Certificate
Navigation Lights Certificate
Classification Certificate for Hull and Machinery
International Oil Pollution Prevention Certificate (IOPP)
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
I.M.O. Number: 8769080
Call Sign: 9V7568
Date of shipyard delivery: 2009
Gross Tonnage: 10,200 T
Port of Registry: Singapore
S.V.Road, Santa Cruz (W)
No.6, Temasek Boulevard,
Singapore 038986.
Fax: +65 - 62948540
3.4 Operational Limits
The published operational limits of DD8 are as follows (Ref. 2):
OPERATIONAL CAPABILITIES
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
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
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
- Max. heave (ft): 12
- Max. pitch (single amplitude) degrees: 6 deg single amplitude, Per Marine
Operations Manual, Fig 2.14, and Critical
Motions
Working Water Depth (ft): 25- 350
Drilling:
- 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
- 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
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.
Maximum Dist. Of Center of Well over Aft Shell at Fr. 38
(Transom)
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
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.
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.
ventilation inlets/outlets, communications systems,
Starboard Side - Emergency Generator Room
(Module, accessible only externally).
Aft - Fast Rescue Boat.
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
2 )
Main Deck (Outside Pipe Rack) 2,075 kg/m 2 (425 lbs/ft
2 )
2 )
Helideck 9,253kg + 205 kg/m 2
20,400 lbs + 42 lbs/ft 2
Quarters Deck 459 kg/m 2 (94 lbs/ft
2 )
2 )
2 )
2 )
Top of Mud Process Area 928 kg/m 2 (190 lbs/ft
2 )
2 )
2 )
2 )
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
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 m 3 (2,049 ft
3 )
‘P’ Tank (Mud) 2 x 58 m 3 (2,049 ft
3 )
‘P’ Tank (Gel) 2 x 58 m 3 (2,049 ft
3 )
3.6.6 Liquid Capacities
3 / 68 bbl
3 / 1,561 bbl
3 / 3,345 bbl
3 / 52 bbl
3 / 32 bbl
3 / 2,053 bbl
3 / 21,746 bbl
/ 396,305 ft 3
3 / 5,364 bbl
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.
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
Allowable sea bed slope (Hard Surface) 4 degrees
Seabed Load Bearing Capacity 6.54 kips/ft 2 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”.
Maximum Wind Velocity (knots) (one-minute average) 100.0
Current – Surface (knots) (profile piece-wise linear) 1.0
Air gap (ft) 50.0
Total Elevated Load (kips) 25329
(See section 4.4 of the Marine Operations Manual “Storm Survival Mode”
3.7.5 Normal Drilling Condition
Water Depth (ft) 350
Maximum Wind Velocity (knots) (one-minute average) 70.0
Current – Surface (knots) (profile piece-wise linear) 1.0
Air gap (ft) 36.0
(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 ft 3 /min capacity and 435psi.
Three medium pressure (Rig Air) Quincy QSI-500-
AVA3296 single stage rotary screw compressors rated at
494 ft 3 /min and 110 psi, connected to 1 Ultra Air /
LFE1600-DNS04 Air Dryer, with rated capacity of 1488 ft 3 /min.
One Low Pressure Quincy QSI-500 single stage rotary screw compressor rated 494
ft 3 /min and 110psi regulated down to 60psi, connected to 2 Ultra Air / LFE800-DNS13
Air Dryers with rated capacity of 550ft 3 /min.\
One 240 ft 3 , 125psi rated
Air Receiver located in the Auxiliary Machine Room,
Starboard Aft.
Rig Air compressor (Typ)
One 120 ft 3 , 125psi rated Air Receiver located on the Drill Floor.
One 120 ft 3 , 60psi rated Air Receiver located in the Auxiliary Machine Room,
Starboard Aft.
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;
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
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.
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 4 th
level (03 Level) of the
quarters in the combined Radio Room and Jacking Control House.
3.11.1 Jack Ratings
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.
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,
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
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
Fwd Port Crane
View looking directly up the Derrick
Stand-building System incl. Guide Frame, Upper and Lower Guide Arm
Rig Tong Counterweight Systems incl. Wire assemblies
Bug Blowers
Derrickman’s Escape Station
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
5 7 /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 2 13
/16" ID spiral drill
/16" ID, spiral drill collars.
Heavy-Wall drill pipe
Thirty, 5 7 /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.
Capacity - 1,000 short tons
Max. Speed - 280 rpm
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
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.
1 Main Deck Towing Bridle FA5-16XMK1GPV 5MT
2 Sub-base Texas Deck Lifting FA2.5MR24MK1G
DP
2.3MT
E
150kg
1 Drill Floor Personnel Hoisting FA150KGMR12-1-
E/
150kg
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).
3.14 Mud System
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
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
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.
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):
Two set 5 7 /8” pipe rams
One set blind-shear rams
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
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
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
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
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
Space # Supply #Exhaust Considerations
Automatic dampers for CO2 release
Emerg. Generator
switchboard room
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-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
Unit Location Cooling Capacity
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 10m 3 /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
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.
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)
Paint Locker (External Paint Locker)
Emergency Generator Room (External Emergency Generator Room)
Firewater pump (above) and Firemain isolation
valve long handle (right)
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
Foam 45L 1
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)
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
LOCATION H2S LEL
Bell Nipple Yes Yes
Drill Floor Yes Yes
Shale Shaker Yes Yes
Mud Tanks Yes Yes
Typical DD8 Gas
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)
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
3.22.1 Water Makers
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
3.22.6 Garbage Disposal
The galley is equipped with one IMO certified Hobart F03-150 certified
food waste disposal unit.
3.23 Communication and Instrumentation
One NOV CYBERBASE full drilling instrumentation and data acquisition system. Also
available to the driller are:
Weight indicator
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
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 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
Aircraft warning lights on top of Legs, Cranes and Derrick
Helicopter perimeter lights
Navigation and obstruction lights
All meet regulatory body requirements. The MODU also has an Inmarsat C GPS.
3.23.4 Instrumentation
Atmospheric pressure
Atmospheric temperature
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
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.
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.
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:
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
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.
DD8 HSE Case ABAN-DD8-HSE Case-P2
DD8 Safety-Critical Equipment Register
each fitted with spud can footing.
Designed and constructed in
accordance IMO & ABS MODU
Code requirements, coatings: surface
according to Keppel “Coating
Specification.” Designed to operate
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.
Barge Engineer,
supported by
13.85m(d) × 5.79m(h) and have
bottom). Designed and constructed
MODU Code requirements, coating.
means of an opposed-pinion
jacking system constructed by
1989 IMO MODU
person rooms), galley, washing
and library and mess room. Contains
air conditioning system, rig
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
environment and
providing adequate
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/m 2 .
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.
kips on centreline at a 30ft extension.
Maximum rotary load of 2,000 kips.
ABS MODU Code
accordance with Regulatory Body
electrically driven anchor winches
x 2,500ft of wire rope with a
specified breaking strength of 1190
kN (Drum & dynamic brakes
bits with fairleads, towing bridle
made of 3” chain connected to 2-½”
wire rope with an 85 MT handling
winch system.
boat).
hoisting power
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.
withstand the extreme
loads required for
2 NOV (or equivalent) drill collar
safety clamps for 9¼” to 10½”.
API 7 & 8 Must be able to
loads required for
elevated sheaves
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.
loads required for
lifting capabilities
necessary for
loading and
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
reasonable excess of
rated capacity loads
withstand reasonable

Deep Driller 8 (DD8) - ABAN MS Cases/DD8/2015 FEB/DD8... · 2015. 2. 12. · DD8 HSE Case ABAN-DD8-HSE Case-Part 2 Part 2 – Facility and Operations Rev 5 Page 1 of 74 1. I N T R

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