Technical Specification of 7500 DWT IMO II Chemical Tanker Date: 01 November 2006 Page 1 of 118 TECHNICAL SPECIFICATION For 7500 DWT OIL PRODUCT/CHEMICAL TANKER BUYER: Unifleet B.V. (or a company nominated Unifleet B.V.) SELLER: Taixing Guanghua Shipbuilding Co., Ltd.
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Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 1 of 118
TECHNICAL SPECIFICATION
For
7500 DWT OIL PRODUCT/CHEMICAL TANKER
BUYER: Unifleet B.V. (or a company nominated Unifleet B.V.) SELLER: Taixing Guanghua Shipbuilding Co., Ltd.
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 2 of 118
Table of Contents
100 General Guidance and Administration...................................................................................8
101 Intent, Scope and General Guidance ......................................................................................8
102 General Description ............................................................................................................. 10
103 Class Notation and Flag ....................................................................................................... 12
The builder shall obtain following certificates and deliver to Buyers at the time of the ship’s delivery unless
otherwise mentioned. Each certificate shall be delivered as triplicates, one original and two copies.
No. Name of Certificate Issued by 1 Classification Certificate for Class Notation Class
2 International Load Line Certificate Class
3 Safety Construction Certificate Class
4 Safety Equipment Certificate Class
5 Safety Radiotelephone Certificate, incl. GMDSS Class
6 Safety Cargo Gear Certificate Class
7 Classification Certificates for Anchor, Chains and Hawsers, Machinery
and Equipment.
Class
8 Certificate for Life Boats & Life Saving Equipment Class
9 Certificate for Navigation Light & Special Signal Light Class
10 Certificate for Crews’ Accommodation Class
11 Certificate for Deadweight Class
12 International Tonnage Certificate, including the SBT calculation. Class
13 International Oil Pollution Prevention Certificate Class
14 Certificate for Compass Adjustment & Direction Finder Government
15 Cargo Tank Calibration Tables the parties will be mutual agreed between
buyer and builder
16 Deratting Exemption Certificate Chinese
Government
17 Certificate for Magnetic Compass Builder
18 Builder’s Certificate Builder
19 P & A Manual Buyer’s supply and
Builder updates
and send for Class
approval.
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 14 of 118
No. Name of Certificate Issued by SMPPEP Manual. Buyer’s supply and
Builder updates
and send for Class
approval.
20 SOLAS Training Manual incl. The FSOP (Fire Safety Operation Plan
Manual)
Builder/Class
21 International Pollution Prevention Certificate For The Carriage Of
Noxious Liquid Substances In Bulk (NLS Certificate)
Class.
106 Material
Structural steel material of main hull structure shall be of quality as required by the Class and shall be free of
cracks, lamination, surface defects and other similar defects.
Manufacturer’s standard type, size and materials of machinery, equipment and fittings shall be adopted, unless
otherwise specifically described in the Specification provided above reference to standards are met and
provided according to good international standard.
If any of the materials or equipment described in the Specification is not available, the Builder may supply
other materials or equipment capable of meeting the requirements of the Classification Society and of the
Rules and Regulations.
Substitution of the materials or equipment shall be subject to the provisions of the Contract.
No asbestos to be used in/on the Vessel.
Quality and constructional arrangement shall be made to ensure easy and future maintenance as far as
practically possible for all machinery and equipment.
All structures and equipment to be carefully and properly planned and prepared before installation onboard to
avoid misalignment.
Any structural members and equipment found not meeting this specification and contracts and international
ship building standards to be replaced.
If any of the specific description for the machinery or equipment in the Specification is not consistent with the
finally selected manufacturer’s standard specification, then the detail design shall follow the manufacturer’s
standard specification, provided the manufacturer’s standards are according to good international standard.
All fittings on deck including bolts and nuts to be of stainless steel material unless otherwise specifically
specified.
Stainless steel without grade notation in the specification shall mean Chinese Standard equivalent to JIS SUS
304.
All stainless steel materials, if any, used during ships construction must be stored and protected in such way
that it cannot become contamination carbon steel. When installed, it must be very well protected. Especially
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Date: 01 November 2006 Page 15 of 118
when grinding or grit blasting will be carried out in the vicinity. After final installation all stainless steel
materials, pipes etc. must be in and outside pickled and passivated according the normal standards used in
stainless steel constructions or ASTM instructions, before delivery of the vessel.
All Grease nipples shall be of stainless steel pin type JIS B 1575 1/8” or equivalent ISO standard, but only one
type to be used throughout the vessel at Builder’s option.
All materials shall be new and unused.
Damages occurring to materials shall be suitably corrected or replaced with new before delivery of the vessel.
107 Workmanship
All workmanship used in the construction of the vessel shall be in accordance with good international
shipbuilding practice and all applicable rules, regulations and standards.
All structural members and openings on hull, all decks and inside tanks to have all free edges smoothly ground
straight with edge radius of 2 to 3 mm.
Special care shall be paid to secure easy future maintenance for all constructional/design arrangement.
In general, automatic or semi-automatic, low hydrogen, CO2 gas submerged arc, flux cored electode
welding are to be applied for structural member and hull members. All welding consumables should
be approved by BV.
All welders should hold BV class appropriate welder certificates. All welder qualifications should be
recorded and copies provided to the buyer
108 Spare Parts, tools and Accessories
Spare parts, tools and accessories for the machinery and equipment shall be supplied in accordance with the
Class recommendations and the manufacturer’s standards for one year spare parts supply, unless otherwise
specifically described in the Specification. A reasonable amount of additional spare parts supplied by the
Buyers should, however, be placed onboard during the outfitting period without extra cost.
Following spares shall be equipped for each ship in addition to the above items;
• One controllable propeller’s blade
• One spare anchor
• Four garbage containers made of stainless steel sheets to meet MARPOL requirement.
109 Unit of Measure
Metric system shall be adopted for design and construction of hull, machinery, equipment, etc, in general.
All measuring units such as power, pressure gauge, thermometer, volume gauge, tanks scales etc., to be in
accordance with metric system unless specially required by the Buyers’s at early designing stage.
110 Operating Temperature
Operating temperature of all exposed deck equipment such as, but not limited to, cranes, windlasses, hydraulic
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 16 of 118
aggregates, hatch covers, navigating equipment shall be minus 40 degrees Centigrade. (or to meet ICE class 1A
requirement)
111 Definitions Used In This Specification
The following standards to be applied on construction of the vessel:
Japanese Industrial Standards (JIS) or equivalent ISO standards. The Builder may alternatively use the
following equivalent Chinese Standards, provided it is documented to Buyers’s supervisors, that these
standards have quality level and dimensions at least equivalent to the comparable JIS/ISO:
Chinese Industrial Standard (GB)
Chinese shipbuilding Standard (CB)
Builder’s Engineering Standard
Chinese Metallurgical Standard (YB)
Chinese Machinery and Electric Standard (JB)
The ISO Standard to be applied as far as possible.
Special care to be paid of having standard for securing inter changeability of flanges, grease nipples etc.
112 Language
All documents, manuals and drawings for design and construction of the Vessel which shall be submitted to the
Buyers must be prepared in English.
113 Buyers Supplied Items
Following items shall be furnished and supplied by the Buyers at their own expense, and received, stored and
installed on the vessel by the Builder.
• All hoses, etc., other than those required by the Rules, or mentioned in this Specification.
• .
• Steel wires, ropes and hawsers for mooring in excess of the requirements of the Classification Society
and/or this specification.
• Deck, engine and cabin stores in excess of those specified in this Specification.
• All bedding (pillows, blankets, sheets, covers, etc.) but excluding mattresses.
• All napery (serviettes, table cloths, etc.)
• All cook’s and steward’s utensils (crockery, cutlery, silver-wares, china, glasses, pots, pans, etc.)
• All chandlery (soaps, lamp oil, etc. ) toilet papers, food and other consumables.
• All charts, sailing books and flags.
• All consumable stores.
• All medicine and medical equipment.
• All air tools and hoses except those specified herein.
• Personal calculators.
•
• Recreational equipment other than mentioned in these Specifications.
• Typewriter and other office machines.
•
• Hand tools other than specified in Specification.
• Broadcasting radio receivers and stereophony (sockets installed by Builder).
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• Paintings and pictures.
• TV sets.
• Spare parts, navigation equipment, flags, etc., in excess of the requirements of the Rules and
Regulations as specified herein, and/or those specified in this Specification.
• Water, fuel oil, lubricants and grease, working oil for deck machinery, all consumable liquids or gas
including remaining L.O. in pipe etc. to be of the Buyers's account excepting those which have been
consumed trials and tests which are to be borne by the Builder.
STANDARD TO DELIVERY INVENTORY LIST
Besides the already built in equipment for galley, mess rooms, cabins etc following equipment to be delivered. The to be
delivered equipment must be of first class quality like SIEMENS, PHILIPS, BOSCH or AEG. All cooking appliances,
pans etc heavy model stainless steel with re-enforced bottom designed for use on electric stoves. Kitchen tensile, linen,
blankets etc to be of good quality at buyer’s satisfaction. Alternatively, a fair amount of money can be reserved for this
purpose, and then ships crew can buy the required inventory at yards account.
The following is always included in the ships delivery.
Pieces. Equipment. Position. 1 Deep fat fryer domestic model. Galley. 2 Toaster domestic model. Galley / mess rooms. 1 Microwave oven. Galley / Pantry. 1 Domestic cooling boxes maximum possible size with front doors. Galley. 1 Domestic freezing box maximum possible size with front doors. Galley. 3 Coffee makers 12-cup model. Galley / mess / bridge. 2 Electric water heaters 1 lt. model. Galley / Bridge. 1 Domestic multi function kitchen machine with auxiliaries. Galley. 1 Fixed, easy to clean, chopping block. Galley. 1 Domestic model mixer wit auxiliaries. Galley.
6 set. Towels and linen for kitchen use. Galley. 2 Frying pans big size heavy model with cover. Galley. 1 Frying pan medium size. Galley. 2 Cooking pan big size heavy model approximately 10 Ltr. Galley. 4 Cooking pan medium size model approximately 5 Ltr. Galley. 2 Cooking pan small size model approximately 1 Ltr. Galley.
1 set. Cooking pans several sizes. Galley. 2 set. Serving ware including soup bowls, serving plate’s etc. Galley / mess rooms.
2 Roasting tins 20- x 30-cm. Sizes depending on oven. Galley. 2 Water kettle. Galley. 2 Coffee cans 1 ½ litre model. Galley. 2 Tee cans 1 ½ litre model. Galley.
10 Floor towels. Galley, mess laundry. 4 Dust pan with brush for tables. Galley / mess rooms. Toilet brush and holder. For every toilet. Floor mats heavy quality COCOS. For deck entrances. Floor mats light duty. For every door. 2 Multi system PAL, SECAM and NTSC television sets. Big screen. Mess rooms. 2 Stereo radio sets. Mess rooms. 2 DVD player. Mess rooms. 1 Computer multimedia to be used for playing games etc. Mess rooms. 1 Flat iron. Laundry. 1 Iron plank. Laundry. 1 Vacuum cleaner domestic model. Mess rooms. 4 Cloth hooks Every cabin. 2 Towel hooks. Every wet space. Mattresses. For every bed. Pillows. For every bed. Deck bed. For every bed.
2 pair. Sheet. For every bed. 2 Mattress covers. For every bed. 2 Pillow cover. For every bed. 1 Blanket. For every bed. 2 Towel big size. For every cabin. 2 Towel small size. For every cabin.
1 set. Gedore tool-locker 1400 with tools S 1400 GM. (altas) Deck workshop. 1 Roll. Air hoses 13 mm and air nozzle. Workshop. 1 Roll. Fresh water hoses 15 mm with spray nozzle. Engine room.
1 Hacksaw. 1 Ships bell to be installed on foremast. Acc. the rules
4 coils. Polypropylene mooring rope suitable for the vessel. Tipto 8 220 mtr each 2 Emergency (fire) towing wire with eyes according CDI. 25 mtr each 2 Raft ladders advance. Acc. the rules 2 Pilot ladder length 4-metres. Acc. the rules
1 Roll Hot water resistant deck cleaning hose 25-meter. 1 set. Stay wires for fore mast, if any, stainless steel. 1 set. Turnbuckles for stay wires fore mast. 1 set. Signalling equipment as class / flag state required. 1 set Clocks for mess room, officer cabins, bridge and cargo office.
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 19 of 118
Bridge equipment. 1 Sextant with certificate. Acc. the rules 1 Barometer with certificate. Acc. the rules 1 Chronometer in box. Acc. the rules 1 Clock with sectors. Acc. the rules 1 Air thermometer 1 Seawater thermometer. 1 Hand megaphone Acc. the rules 1 Flexible sounding rod. 1 Hand led 30 fathoms complete with led weight. Acc. the rules 1 Set of signalling flags 70 x 90 cm. Acc. the rules 1 Ships national flag.
10 National flags at buyer’s choice. 1 Parallel ruler. 2 Chart dividers. 2 Binoculars 7x50 in box. 1 Day (Aldis) signalling lamp with 24 connection and battery. Acc. the rules 4 Safety explosion proof torch. 1 List of life saving signals for bridge. Acc. the rules 1 Wheelhouse poster (filled in after sea trials) Acc. the rules 4 Oil record books. Part II-cargo ballast operations tankers. Acc. the rules 4 Oil record books engine room. Acc. the rules 1 British Admiralty chart atlas. 1 Marpol regulations last edition with annexes. 1 SOLAS regulations last edition. 1 IBC code regulation last edition.
To be corrected to all compulsory publications according SOLAS, IBC code and EXXONMOBILE safety criteria.
114 Hull Form & Model Test
The Builder is to design the hull form, propeller and rudder suitable for the vessel’s speed and performance.
The vessel shall have bulbous bow, raked stem and transom stern. The fore end of the bulb shall not protrude
beyond the fore end of the forecastle bulwark.
The stern plates shall be welded together against a solid round bar (about 100 mm).
The builder to submit report of model tank test estimated fuel oil consumption and ship’s speed for designed
draft condition and scantling draft for suitable range of main engine RPM to Buyers within 3 months from
signing the Ship Building Contracts.
Model tests to include the following:
• Resistance tests at the designed draft and ballasting draft
• Self-propulsion tests with stock propeller at the design draft and ballasting draft
• Wake survey
• Flow line plan
115 Trim And Stability
Trim adjustment by using ballast water to obtain approximately even keel at fully load arrival condition shall
be possible.
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At the preliminary stage, the Builder will submit trim and stability calculations to the Buyers at the following
loading conditions intended for the ship’s service.
• Light ship.
• Homogeneously loaded condition at scantling draft. Departure and arrival. Homogeneously based on
the design specific gravity
• Group loading condition. Departure and arrival.
• Ballast condition. Departure and arrival.
• Dry docking.
• Tanks 2, and 4 empty rest full.
• Tanks 1, 3,and 5 empty rest full
• Tanks 3 and 5 full rest empty
• Tanks 2 and 3 full rest empty
• Tanks 3 and 5 full rest empty
“Departure condition” shall be based on the full supplies of bunkers and other consumables, and “Arrival
condition” on approx. 10% supplies of departure condition.
Final trim and stability calculation for above loading conditions shall be made on the basis of the center of
gravity and the light weight of the Vessel obtained from the inclining experiment.
Specific gravity of water and oil for the trim and stability calculation shall be as follows:
Sea water: 1.025 Fresh water: 1.00
Heavy fuel oil: 0.98
Diesel oil: 0.85
Lub. oil: 0.90
Both intact stability and damage stability calculation shall be carried out according to latest regulation as
Intact Stability
• IMO A749
Damage Stability
• IBC Code
• MARPOL
The vessel shall always comply with the above damage stability criteria’s without the need to taken any ballast
when vessel is loaded with a full homogeneously deadweight cargo.
Hydrostatic tables, light ship weight with centers of gravity and longitudinal weight distribution to be supplied
to the Buyers at an early stage of the design.
Loading conditions shall include calculations of longitudinal hull girder bending moment and shear force.
It shall be demonstrated that the hull girder bending moment and shear force for all loading conditions are
below the allowable limits required by Class.
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Preliminary Trim and Stability Booklet including bending moment and shear force will be submitted to Buyers
at an early design stage.
A preliminary Capacity Plan to be submitted together with the preliminary loading conditions.
If the final trim and stability booklet is under process of approval by the Classification Society and/or other
assigned Authority, the Builder shall provide the provisional trim and stability booklet upon the delivery of the
Vessel.
When the vessel is substantially (1) completed, an inclining experiment to be carried out to ascertain the
position of center of gravity of the vessel at the finished light condition.
(1) Substantially completed shall mean that only some minor works remains as agreed by Class and Buyers.
The inclining experiment shall be carried out in the presence of the Buyers’s Representative and the
Classification Society surveyor. The procedure of inclining experiment and deadweight measurement prepared
by the Builder shall be approved by the Classification Society or other assigned Authority.
Incline test to be carried out in calm water and calm weather, with all cargo tanks and ballast tanks all full or
empty, bilge all clear and free of water or oil.
Slack tanks shall be avoided as far as practicable, free surface of remaining tanks shall be easy controllable.
The results of the experiment shall be submitted to the Classification Society or other assigned Authority for
approval.
The Builder will send the results for Buyers’s approval or comments, if any.
In case of series of sister vessels, the inclining experiment shall be carried out only for the first vessel of the
series, if not otherwise required by Classification society.
116 Determination Of Deadweight
The deadweight is to be expressed in metric tons unit.
The deadweights is to be the difference between the displacement including shell and appendages of the vessel
at the scantling draught of 6.5 meters in fresh water (specific gravity to be determined by measurement on
the spot) and the light weight, which consists of following items:
• Hull steel
• Fixed fittings, equipment and inventories as per rule requirement
• Machinery in dry condition other than mentioned in here after
• Spare parts and tools in accordance with the class requirements.
• Fuel oil in main engine, auxiliary engines and in supply piping from the outlet of service tanks to each
engine.
• Lub. oil in main engine and auxiliary engines, in coolers for main engine and auxiliary engines and in
circulating piping from sump tank to each engine
• Sea water in fresh water coolers and circulating piping from sea chests to overboard
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 22 of 118
• Fresh water in main engine, auxiliary engines, fresh water coolers for main engine and closed
circulating piping from and to cooling fresh water pumps through the engine
The following items shall not be included in the light weight:
• Spare parts and tools which exceed the manufacturer’s standards and Class requirements
• All consumable stores
• Articles supplied by the Buyers, which is not defined as part of the lightship
• Crew and their effects
• Oil and water in hull pipings and tanks
Others not mentioned as lightweight items.
117 Building Process
Construction and outfitting of the vessel to be made under the Builder’s building process and practice specified
hereunder.
Suitable size of blocks shall be assembled at shop in general and then erected on building berth or at building
dock.
In general, if auxiliary machinery (except generators), beds or seats for such auxiliary machinery, pipes, valves,
etc, shall be assembled and if required inspected at shop as a unit, then, such unit shall be brought onboard the
vessel and installed.
After installation or such units in the vessel, centering of the auxiliary machinery shall be checked by the
Builder and corrected by shims if necessary. The auxiliary machinery and accessories fitted in such units shall
not be dismantled for such checking purpose unless otherwise considered necessary. The Buyers’s supervisor
(hereinafter called “the supervisor” ) shall be informed and attend the checking of the centering.
Excessive misalignment shall not be allowed to correct by shims, Class to decide whether a misalignment is
excessive or not.
118 Dry Docking
Vessel shall be dry-docked for hull cleaning and completion of painting and repair before seatrials. Any defects
found should be rectified before undocking.
Box Coolers should be opened up for inspection and clean if found necessary.
119 Inspection Tests and Trials
1191 General
Reference is made to Shipbuilding contract.
The Builder shall at all time keep the Buyerss advised in every respect of the programs of work and upon
request, methods which he intends to use. Notices of major events, tests and trials shall be given sufficiently in
advance to the Buyer to permit them or the person they designate to make necessary arrangement in order to
attend the tests or event.
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All necessary drawings and information which are required for the inspector or permit him to carry out his
work and keep the Buyerss advised of construction details and work progress, shall be made available to him
upon request.
Inspection by the Buyerss’ representatives shall be regarded as a verification of the Builders own quality
control measures and shall not be used as a substitute for quality control.
In case the Buyer Inspector is unable to attend any test, he may designate a person to act on his behalf,
otherwise the inspector shall waive the right to have comments for such test, provided notice is given as
agreed.
Whenever materials, equipment and machinery etc., have been tested and inspected by the Buyerss’ supervisor,
such material and equipment shall be clearly marked and assigned to the vessel. Such materials and equipment
shall not be exchanged with any other without the Buyers’ written consent.
At the acceptance inspection each space shall be completely clean and finally painted if/as specified and fitted
out in accordance with specification.
All piping shall be proven tight and free of internal obstruction. Electric cabling and equipment shall have a
satisfactory megger test and prove operational.
All test programs as given in the list for inspection shall be submitted to the Buyerss representatives for
approval at least two weeks prior to the test. Application for inspections shall be submitted to the Buyerss
representative the day before inspection if such inspection is in the Yard.
In general, all work equipment, machinery, systems etc. whether belonging to hull part or machinery part shall
be tested sufficiently onboard to prove specified performance, safe operation, suitability in service compliance
with all applicable Rules and Regulations.
The Builder is to deliver the vessel in a clean and freshly painted condition, all valves, wires, machinery oiled
and greased, refrigerated stores cooled down to operating temperature, hatches, booms and stores securely
stowed and ready for sea.
1192 Progress
The Builder is to provide the Buyers the intended schedule of construction until delivery before keel-laying, In
case the Builder falls behind the intended schedule, the Builder shall try all possible efforts to bring the vessel
back on schedule in order to meet delivery date.
Builder’s standard programs for inspection, test and trials shall be submitted to Buyerss for review/comments
a.s.a.p.
Building and construction plan and schedules for each vessel should be prepared by Builder and submit to
Buyers representative in writing monthly.
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1193 Tests and Inspection
11931 Hull Structure Tests
All steel structures to be inspected and tightness to be tested for tanks, bulkheads and superstructure deck and
other wet space etc. as required by the Class Rules.
Tank shall be tested hydrostatically or by air as required by the “Class Rules”.
X-ray photographs or ultrasonic inspection to be taken mainly from cross-points of seams and butts block
assemblies of bottom shell, bilge strake, main deck and sheer strake as required by the “Class Rules”.
11932 Hull Inspection
The block inspection shall be carried out after completion of hull block steel works. If fittings are fitted wholly
or partially to the hull blocks, the inspection for the hull blocks shall be carried out without dismantling such
fittings provided satisfactory access to all hull parts. The internal inspection for hull construction works of
tanks, engine room, etc. to be carried out even if outfitting works in such spaces have not been finished yet but
any works in connection with strength and tightness of the hull construction shall be completed before the said
inspection, in which case, after completion of the outfitting work, final inspection of such parts to be made in
accordance with the mutual agreement between Buyers representatives and Builder. Inspection of the hull
construction shall be made before any paint work is done.
Shop tests shall be carried out for the machinery and equipment by the manufacturers at their shops.
Test results of major machinery and equipment shall be furnished to the Buyers in triplicate.
The Buyers shall be informed of the shop test schedule at least seven days in advance of the expected date of
the shop tests and the Buyer’s attendance shall confirm with the Builder four days in advance of the expected
date of the shop test.
11933 Installations and Equipments
Installations and equipment shall be tested on board in accordance with the “Class Rules” and/or Regulatory
bodies and the standard of the Builder and approved by the Buyers.
11934 Piping Test
As far as hydrostatic test is practicable for a part of piping system, such test shall be made for such part before
completion of the whole system. Working test shall be carried out after completion of the piping system.
1194 Mooring Trial
Mooring trial for the main engine with associated auxiliary machinery and equipment shall be carried out prior
to the sea trials while the Vessel is moored at the Builder’s quay:
• Confirmation of starting position
• Turning gear interlock test
• Confirmation of control position
• Safety device test (automatic trip by simulation)
• Minimum revolution test
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• Test of starting air capacity
• Inspection of crankcase
1195 Sea Trial
When the vessel is substantially completed, sea trial shall be carried out by the Builder in accordance with the
sea trial procedure which shall be prepared by the Builder according to Class requirements and Testing of New
Ships and Builder’s standard, and shall be submitted to the Buyers for approval.
Marine diesel oil and heavy fuel oil with viscosity as available on the domestic market shall be used during the
sea trial.
All lubricating oils used for trials should be international brand and approved by Buyers. (Castrol)
Sea trial shall be carried out at the designed draft condition.
Sea trial to ascertain that the vessel conforms with the terms of the contract and specification.
Machinery and sea trials schedules in writing to be submitted to Buyers for approval 14 days in advance.
11951 Progressive Speed Trial
Speed trial for the assessment of the guaranteed speed performance shall be conducted in deep water, by
means of the GPS and shaft power to be measured by torsion meter.
Results of speed trials shall be corrected to the calm water (no wind, wave).
Applied method for correction shall be based on internationally accepted methods. Corrections shall be carried
out by Builder and approved by Buyers.
The progressive speed trial shall consist of one (1) double run (alternating in direction) at main engine loads of
60% MCR, 75% MCR, NCR and MCR.
11952 Endurance Trial
Endurance trial shall be conducted for four hours at NCR load and one hour at MCR.
11953 Maneuvering Trials
The following tests shall be carried out to check the maneuverability of the Vessel:
• Crash stop astern and ahead test
• Turning test
• Inertia test
• Minimum revolution test
11954 Other tests and measurements
The following tests and measurements shall be conducted at proper time during the sea trials according to the
requirements of the Classification Society and the Rules and Regulations and the Builder’s practice.
• Unmanned operation test (during endurance trial)
• Steering gear test
• Shaft torsional and axial vibration measurement
Technical Specification of 7500 DWT IMO II Chemical Tanker
(Actual weight to meet classification requirements)
1 Spare anchor Stockless SPEK type, Cast steel construction. One for each
vessel as per above specifications.
1 Anchor chain 46 mm dia. X 495 m in length, Grade NV K3 with Kenter
shackles (actual size to meet classification requirement) 2 Chain releaser Fastened type in chain locker and operable from outside. 6 Mooring Rope Mooring rope Tipto12, 220metres, (B.S. 2250 KN) including
loop end.
4 rope reels with greasing points on forecastle deck
4 rope reels with greasing points on poop deck
2 Fire wire 32 mm dia. Steel wire x 45 m with manual stowage reel.
1 Towing stopper To be installed on fore and after deck in accordance with
IMO Regulation. The number & size are suitable for Tipto 12
ropes.
Mooring fittings, such as panama chock, bollards, panama fair leaders, guide rollers and mooring holes shall
be arranged in accordance with OCIMF requirement for reference as shown on the General Arrangement Plan
and mooring arrangement. The mooring arrangement shall be approved by the Buyers prior the construction.
608 Manifold
In way of cargo manifold on upper deck, additional deck fitting, such as bollard, cross bitt and closed chock
shall be fitted refer to the OCIMF recommendation Category “A” for reference only.
The vessel cargo manifold to be installed amidships. To be designed and arranged as much as possible in accordance
O.C.I.M.F. “Recommendations for Oil Tanker Manifold and Associated Equipment” where applicable. All manifold
flanges must be “ANSI 150 STANDARD”. All flanges with bolts and nuts of stainless steel aIS316L material. Type of
manifold crossover. Flanges of manifold valves PN-16. ANSI 150 standard flanges shall be used. Other connections by
means of reducers. The manifolds are slopping down to the middle.
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 58 of 118
The following distance are proposed, and to be followed as close as possible:
Height above the deck to center of pipeline: 2.00 Mt.
Distance between pipelines from center to center: 1.00 Mt.
Distance from ships side to the 8-inch flange: 2.50 Mt.
The manifolds are connected together and to the stripping system via a 3-inch pipeline valves. In addition, to a 3-inch
pipeline for pressing to slop tank and butter wash tank. On the outer side, (between valve and hose) of the manifold stop
valves. On the connection between stop valve and hose, a pressure meter and temperature meter. A pressure and
temperature sensor to be installed readout from cargo office. In addition, a bottom connection for, 1-inch air valve, and
a sample valve.
All manometers and thermometers in the cargo system to be delivered calibration certificate.
Underneath of the manifold a drip tray, with a suction well. Minimum depth 60 cm. Covered gratings approximately 50
mm from the top to establish a safe working platform. No frames allowed on the inside of the drip tray. Drip tray to be
coated with a suitable cargo tank coating. (Marineline coating) Coating according to the same procedure as for cargo
tanks. The drip tray suction well to be connected the stripping system. The bottom sloping to suction point, 2-inch
drains ball on the outside of the well. The railing near the manifold must be a collapsible. Surrounded with stanchions to
make a temporary portable railing for operation time. Chafing protection for the cargo hoses must be made on the top of
the spill barrier on ships sides.
Near the cargo manifold on both sides a heavy-duty container a watertight-hinged cover for oil spill containment
materials to be made. Sizes approximately 200 x 80 x 80 cm. Above cargo manifold a platform gratings for storage
hoses etc. Platform to be provided access from catwalk and drip tray.
Cargo manifold drip trays to be coated with Marineline coating.
Reducers For Cargo Hoses: Near the manifold storing facilities for the several reducers of AISI 316-L material to be provided. Minimum following
reducers are required and must be installed in the delivery (to be completed as per OCIMF rules):
Base on cargo pipe diameter is 10 inch.
ANSI to ANSI 150 STANDARD
� Two pieces: 10 to 8 inch
� Two pieces: 10 to 6 inch
� One: Y-pieces – 2 x 10 to 1 x 10 inch
� Three more as per needs.
ANSI to DIN
� One piece: 10 inch ANSI standard to 10 inch DIN standard (12 holes).
� One piece: 10 inch ANSI to 8 inch DIN
609 Oil Spill Drain Tank
Above pump room deck, oil spill collection tank shall be made. On each side of the main deck in the most aft
part a scupper to be made which drains of in the Deck oil spill tank.
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Date: 01 November 2006 Page 59 of 118
The tank should be emptied with overboard valve controlled from the main deck and with the slop/stripping
pump to the slop tank.
610 Mooring Equipment
All figures need to be futher checked.
Bollard : 355mm diameter double-bitts as shown on General Arrangement
Mooring pipes : 355mm nominal size, cast steel as shown on General Arrangement
Closed Chock : 315mm nominal cast steel as shown on General Arrangement
Fairleads : 200mm dia single vertical rollers open type as shown on General
Arrangement
200mm dia double rollers open type as shown on General Arrangement.
Only mooring equipment of the vessel to be suitable for ship to ship transfer operations, such as bollard and
panama chocks.
Mooring layout of vessel and detailed drawings of equipment shall be submitted to the Buyers for approval.
611 Ladders and Steps
6111 Accommodation Ladders
Accommodation ladder shall not be provided. Instead two portable aluminum wharf ladders one with 6 m in
length and one with 10 meters in length shall be supplied. Both portside and starboard side near superstructure
shall fit platform for the wharf ladder. Loading certificates to be provided for the ladders.
6112 Steel Ladder and Steps
All ladders inside tanks should be bolted on and made of 316L stainless steel materials, including all fittings,
bolts and nuts.
All cargo oil and slop tanks shall be fitted with vertical bolted on inclined ladders face afterwards. The
maximum inclining angle shall not be exceed 75 degree. The ladders and all fittings shall be made of 316L
stainless steel and not coated . The width of the ladders shall be approximately 450 mm. The step shall be
made of two square bars with dimension of 22 x 22 mm. The arrangement of the ladder shall not obstruct the
radar sensor.
Protection plates of stainless steel AIS316L marterials (1.5mX1.5MX3mm) to be provided at the bottom part
of all the ladders inside the cargo and slop tanks. Plates should be fully welded on the tank top plates before
coating.
The steel vertical ladder of 300 mm width and with 300 mm step spacing shall be provided in all bunkers,
ballast and fresh water tanks for access.
Steel vertical ladders or steps to be also provided to deep tanks, service and settling tanks, unless space is
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 60 of 118
limited and approval duty obtained from Buyers, monkey steps will be acceptable.
Vertical ladders shall be fabricated with 65 mm x 9 mm mild steel flat bar and step of a 19 mm square bar with
vertical diagonal.
Sufficient stairs and ladders shall be arranged to provide convenient access to all decks and platforms. All steps
of stairs inside the accommodation shall be made of steel covered with appropriate sound absorbing material and
finished with non – slippery top layer. Aluminum or stainless steel angle bar shall be installed on front of each
step above the covering.
Ladders shall be generally bolted to the structure. No vertical ladders are allowed in pump room and paint
store.
612 Access Hatch and Manhole
6121 Access Hatch and Manhole for Cargo Oil Tanks
One set of access hatch (swing away type) for each cargo oil tank, slop tank and deck tank shall be fitted. The
clear opening of the access hatch is about 850 mm. The access hatch shall be arranged as per General
Arrangement Plan and be approved by the Buyers prior to construction. The hatch shall be installed as much
forward as possible. The swing away hatch cover shall be used along with enough number of butterfly cleats.
Each cargo tank entrance shall be marked with C.C. (Cargo Compartment) and tank number by welding bead.
The round bar shall be placed on top of hatch coaming made of stainless steel AISI 316L. Gaskets shall be able
to resist the cargo spill out in the cargo list. Hinge pins, lifting screws, pivoting axles, bushings and threaded
fasteners to be of stainless steel AISI 316L.
All hatches (not including the covers) should be of stainless steel 316L materials.
The height of swing away type hatch coaming shall be around 700 mm. The internal hatch coaming shall be
painted with same surrounding coat applied to the cargo hold.
All cargo tank hatch and opening gaskets to be of TEFLON materials.
6122 Access Manhole for Water Ballast Tank
Two watertight bolted flush type manholes cover with clear opening 600 x 800 mm(according to the Class
rules) shall be fitted on each water ballast tank. Each ballast tank to be provided with a sample hatch (2-inch)
for sampling the atmosphere in the tank bottom and top. Each ballast tank manhole shall be clearly marked
with tank name by welding bead.
6123 Tank Cleaning Hatch
At least two set of hanged tank cleaning hatches of mild steel construction, of suitable size for use with portable
tank cleaning machine shall be provided on each cargo tank and slop tank. Tank cleaning hatch dimensions are
355 mm diameter, with a height of 200 mm above longitudinals, which to be internally coated same as
surrounding tank coating.
The round bar on top of coaming and the coaming to be of stainless steel AISI 316L. Gaskets must be cargo
resistance and of TEFLON materials.
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Date: 01 November 2006 Page 61 of 118
6124 Sample Hatches
Each cargo & slop tanks should be provided with a sample hatch with a minimum diameter of 125 mm fitted
with flame arrestor according the rules.
Sample hatches are of self enclosed type during sampling.
Certificates and instructions in English to be provided for the flame arrestors.
Hatch gaskets to be of TEFLON materials.
6124 Small Hatches
Following small hatch shall be of hinged or bolted type shall be provided. The height of hatch coaming shall
comply with the requirement of class.
Location No Type Opening Operated by Upper deck for engine
room spare parts lifting
1 Watertight,
bolted
800 x 1200 Manual
Poop deck for pump
room
1 Watertight,
hanged
800 x 1200 Manual
Forecastle deck for rope 1 Watertight,
hanged
600 x 600 with
coaming
Manual
Upper deck aft for
steering gear room
1 Watertight,
hanged
800 x 800 with
coaming
Manual
6125 Manholes
Manholes shall have steel plate cover secured with stainless steel studs and nuts. Each manhole cover shall be
fitted with one or two hand grip and marked with the name of the compartment.
The construction, materials of the manhole with covers shall be in accordance with the Builder’s standards
unless otherwise specified.
Location No Type Opening Operated by Aft. Peak tank 1 Watertight,
bolted or
hinged type
600 x 800 with
coaming
Manual
Bunker tank 1 Oil tight,
bolted
600 x 450 Manual
Double bottom in
engine room
Oil tight,
bolted with
100 mm
coaming
600 x 450 Manual
Each manhole shall be clearly marked with tank number/name by welding bead.
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Date: 01 November 2006 Page 62 of 118
613 Life Saving Appliances
Life saving appliances shall be furnished completely in accordance with SOLAS requirements and its
Amendments 1981,1983, 1988 and 1994 and all amendments until the contract has been signed All equipment
to be type approved by the maritime authority of the registered nation or its assigned authority.
All LSA equipment should be EC approved types with wheel marks.
1 Lifeboat Suitable for
Oil Tanker GRP, enclosed free fall type, water cooled diesel engine
driven for 16 persons with spare spaces to meet SOLAS.
Safety harnesses inside the lifeboat should be adjustable type
to suit difference in the sizes and build of the crews.
Two additional heavy duty securing point with stainless steel
fittings, turnbuckles and wires to be provided for securing
the lifeboat lifting hooks. 1 Lifeboat davit Recovered A type, driven by fixed electric motor. 1 Rescue boat GRP, driven by diesel engine with 6 persons
Nylon straps with stainless steel fittings to be provided for
securing the rescue boat for open sea conditions.
1 Rescue boat davit To compliance with Rules and SOLAS required.
2 Life raft Inflatable type, with 14 persons for each stowed in fiberglass
containers with approved launching device. One for each side
(P&S)
as per SOLAS regulation.
8 Life buoy 2 – with self-igniting light of electric battery type.
2 – with self-activating smoke signal
4 – with 30 meters life lines
15 Life jacket 15 – Inflatable SOLAS approved life jackets stowed in the
wardrobes of cabin
5 – stowed in the public place
1 Line throwing
appliance
Complete with four life lines and four (4) projectiles not less
than 230 m.
12 Parachute distress
rocket signals
As per SOLAS requirement.
6 Rocket signals As per SOLAS requirement.
14 Survival suits as per SOLAS requirement.
All safety equipment to mark in distinct color of ship name and home port as per SOLAS.
614 Fire Fighting System
Fire fighting system shall be installed in accordance with the latest requirements of SOLAS/IBC Code/Class
and Flag State
All fire fighting equipment should be EC approved with wheel marks.
Cargo tank deck area Fixed low expansion deck foam suitable for chemicals.
Sea water (alcohol resistance foam liquid)
Engine room & Pump Fixed high pressure CO2 system,
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Date: 01 November 2006 Page 63 of 118
room Sea water,
Portable fire extinguisher.
Portable foam extinguisher near boiler space.
Accommodation Sea water,
Portable fire extinguisher,
Fire detection System (1A method in SOLAS Reg.)
Paint store Water spray connected to fire main line, controlled just outside the paint
store.
A fixed local application fire fighting water mist system to be protecting high risk item/area (main engine, aux.
engine, boiler and purifier, etc.) in engine room to comply with SOLAS, 2000 Amendment.
615 Fire Hydrant System
Fire hydrant system with stortz couplings combined with the wash deck service to be installed for
accommodation quarters, open decks and engine room. Sea water to be supplied from the Fire/G.S
pump.Particulars for Fire/General Service pump: ( Capacaties according to the regulations)
No. of sets Two (2) sets
Type Vertical centrifugal pump with self-priming.
Capacity About 70 m3/h
Pressure 8 bar
Drive Electric motor
Casing Cast bronze
Impeller Stainless cast steel
Shaft Stainless steel
Shaft seal Mechanical
The main line shall be laid on the upper deck. Two international shore connection pieces shall be supplied.
The fire hoses shall be 50 mm hard duraline with stortz coupling, except for 19 mm hard rubber on recessed
reels with stortz couplings in the accommodation.
Deck fire line hydrants and hoses should be same size as the fixed foam system.
616 Foam Fire Extinguish System
Foam shall be of Alcohol resistant type. A fixed deck foam system shall be installed as per the requirement of
SOLAS. The arrangement for providing foam shall be capable of delivering foam to the entire cargo tank area
as well as into any cargo tank and the deck of which has been ruptured.
Necessary amount of monitors on the deck within cargo oil tank region shall be provided as per the
requirement of the Regulations. Portable foam nozzles to be supplied as well.
Two sets of foam tank and proportioner shall be arranged in foram tank space. One is installed for spare.In
accordance with the latest Solas rules. The foam solution tank is to store sufficient capacity of foam
concentrate to ensure at least 30 minutes of foam generation through a balanced pressure proportioner with a
foam pump. Capacity of foam tank to meet SOLAS requirements.
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Sea water for foam fire extinguishing system shall be supplied from foam water pump in engine room.
All fixed foam line hydrants and hoses should be the same size as the deck fire line equipment.
A portable connection should be arranged for flushing the foam lines by sea water from the deck fire line.
617 CO2 Smothering System
An approved CO2 extinguishing system is to be provided for engine room and pump room. The system shall
comply with the latest SOLAS regulations.
CO2 bottle room is to be located on after bridge deck. The necessary pipes and controls shall be supplied to
provide the CO2 to accommodate.
Fire alarm shall be provided according to latest SOLAS and Flag state requirements. In engine room, pump
room and accommodations.
Portable foam, CO2 fire extinguisher, safety equipment and fireman’s outfits shall be supplied and installed at
suitable location in accordance with SOLAS/CLASS rules and Flag state.
CO2 bottle level measuring equipment to be provided.
Break glass key box with key to be provided outside the CO2 room to meet both ISM and ISPS requirements.
618 Emergency Fire Pump
One emergency fire pump shall be installed in the bow thrusters room to take direct suction from the sea chest
and connect with the fire line /hydrants.
No. of sets One (1) set
Type Vertical centrifugal pump with self priming.
Capacity According to class rules and authority, abt. 40 m3/h,
Pressure 8 bar
Drive Electric motor
Casing Cast bronze
Impeller Stainless cast steel
Shaft Stainless steel
Shaft seal Mechanical
Emergency fire pump shall be centrifugal type pump driven by electric motor with the power supplied by
emergency generator.
619 Personal Protection
Protective equipment and safety equipment shall be provided in accordance with Authority requirements.
Fire extinguisher As per the rules and regulations
Technical Specification of 7500 DWT IMO II Chemical Tanker
4 – Protective clothing, boots, gloves and tight-fitting
goggles
4 – Fireproof lifeline with belt resistant to the cargo
4 – Explosion-proof lamp
1 Fully charged spare air
bottles
For each breathing apparatus.
1 Stretcher with lifting device As per SOLAS
15 Respiratory and eye
protection
One for each crew
1 First aid equipment In wheel house/cargo office/eng.control room and galley.
2 Flammable gas detector As per SOLAS
2 Toxic gas detector As per SOLAS
2 Oxygen detector As per SOLAS
1 Oxygen resuscitation As per SOLAS
2 Decontamination shower &
eye washer
As per Solas & IBC Code
Minimum two safety showers to be provided at both sides of the catwalk near cargo manifold. The outside
safety showers to be provided provisions to ensure its integrity during freezing. This may be done by means of
drains: a magnetic operated valve for supply water, controlled by a push button near the shower. The
connection between push button and magnetic valve must be intrinsically safe. Alternatively, other acceptable
solution is to be discussed.
Instruction plates to be provided in engraved stainless steel to be provided at the showers.
EEBD sets according the latest SOLAS requirements
3 Breathing Apparatus according to the IBC Code requirements.
Protective clothing according the IBC Code requirements
Compressor for filling the Breathing apparatus Air bottles. Min 300 bar.
All breathing apparatus must be from the same type and same pressure (300bar)
40 ltr Oxygen bottle fixed near the hospital and a fixed pipeline sytem and outlet manifold inside the hospital
in accordance the latest Solas regulations.
All in accordance with the Solas and IBC code.
620. Fire Fighting System
Fire fighting system to be installed in accordance with requirements of SOLAS / IBC code/Class and Flag state
Regulations.
Cargo tank deck area Fixed low expansion deck foam suitable for chemicals.
Sea water (alcohol resistance foam liquid)
Engine room & Pump
room
Fixed high pressure CO2 system,
Sea water,
Portable fire extinguisher.
Portable foam extinguisher near boiler space.
Accommodation Sea water hydrants.
Portable fire extinguisher,
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 66 of 118
Fire detection System (1A method in SOLAS Reg.)
Paint store Water spray connected to fire main line, controlled just outside the paint
store.
Pump room Fixed gas and oxygen detector
A fixed local application fire fighting water mist system to be protecting high risk item/area (main engine, aux.
engine, boiler and purifier, etc.) in engine room to comply with SOLAS, 2000 Amendment.
700 Equipment for Cargo
701 General
The vessel shall be designed to have fourteen cargo oil tanks. and two deck/slop tanks.
Slop tanks to be used as cargo tanks as well wash tank.
No copper, copper alloys, bronze and brass are allowed to present in the cargo system as required by the
FOSFA Rules.
Sixteen sets of all stainless steel AIS316L deep well type cargo oil pump shall be provided by buyer. The cargo
pump shall be driven by independent electric motor controlled by a frequency converter and controlled from
the ccr. .
The capacity of each cargo pump shall be as following:.
The below for refernce only, final capacities to be final with recommendations form pump maker.
14 sets
2 sets
Deep well type, 300 m3/h for each cargo tank
Deep well type, 100 m3/h for each deck/slop tank
The system shall be able to load and discharge sixteen (16) different grades of cargo simultaneously without
contamination. Each grade using its own line/filter and cargo pumps.
Separation each other by double shut valve during cargo handling except stripping operation. That means the
cargo pumping system shall be designed to facilitate easy loading and cleaning operations.
The general discharge and loading design criteria are as follows:
Design pumping criteria Pressure head: 90mLc. at pump outlet with cargo S.G. 0.8 t/m3
Cargo viscosity 1.0 cSt up to 380 cSt
Design discharge time 6 hours at design criteria with 5 cargo pumps running
simultaneously, incl. stripping.
Maximum discharge rate Total 1500 m3/h at 90mLC., S.G. 0.8 t/m3
Maximum loading rate Total 2000 m3/h.
Segregation -- Full segregation
-- Simultaneous discharge of Sixteen(16) grades via separate
pumps/lines and manifolds.
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Date: 01 November 2006 Page 67 of 118
-- Simultaneous loading of Sixteen (16) grades over manifolds to
cargo tanks.
Cargo pipeline system will be attached to the contract and to be agreed by Buyers prior the construction.
Inside cargo tanks, on tank ceiling and bottom sufficient amount of stainless steel 316-L lifting lugs to
be welded. By means of these lifting lugs, it must be possible to hoist the complete tank-heating coil
system. In addition, by use of this system it must be possible to use of hanging staging. Lifting lugs to
be made according to shipyards standards.
702 Loading and Discharge System for Liquid Cargo
All cargo tanks to be subjected to structural tests when tank coatings are completed. If muddy water is used to press up
the tanks, all tanks should be flushed out with clean sea water and then with fresh water. All tanks and piping system
must be clean and free from contamination before delivery of vessel to Buyers.
All pressure gauges and thermometer connection should have isolating valves or cocks fitted as close to the main pipe
lines as possible as required by class rule.
All piping support securing bolts and nuts to be provided with anti-vibration devices, such as double nuts
Cargo valves in cargo tanks fully stainless steel executed ball or butterfly type. Valves after pumps to be remotely
operated by glycerin hydraulic system. Controls and valve position indications are provided in the cargo control
consoles in the control station on the bridge.
Cargo valves, make Econosto, Mason or Ari. Make and type to be agreed upon mutually. Comply with class rules.
Designed for two way flows and 100% secured close for suction and loading flow directions. Seals inside valve
re-enforced Teflon resistant against all possible cargoes, mentioned in cargo list. Heat resistant till at least 180 degree
centigrade. All butterfly valves un-eccentric water type.
All cargo line strainers should have drain lines with isolating valves and portable connections to the stripping suctions.
Breather valves also to be arranged on top of the strainers.
All flame arrestors to be provided with certificates and instructions in English.
7021 Cargo & Stripping/Slop Pumps
Stripping to be provided by the deep well cargo pumps.
1) Cargo pump (with alarms etc. according the latest Class regulation.)
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Date: 01 November 2006 Page 68 of 118
Number of units Sixteen (16) sets
Type Deep well
Design capacity 14 sets x 300 m3/h and 2 sets X 100 m3/h for each. The
electric motor shall be controlled by frequency converter
controlled from CCR.
2) The cargo stripping to be provided by the deep well cargo pumps. 3) Cargo Piping
The system shall be able to discharge and load sixteen (16) different grades of cargo oil or chemicals
simultaneously without contamination.
When discharging oil, five (5) sets of deep well type cargo pump shall be worked simultaneously, total
discharge rate to be 1500 m3/h at 90 mLc and to be capable of discharging cargo completely during 6 hours,
including stripping.
Piping arrangement in principle according the drawing: Cargo piping system, to be all segregrated for each
tank with individual loading and discharge pipes. Discharge pipes are interconnected with isolation valves to
one discharge line to the ship stern.
Buyers will provide the cargo piping diagram as example for designing.
All cargo piping on deck are insulated with hard covers protections to allow carrying of cargo up to 85 deg C
The manifold and associated equipment and their arrangement shall refer to OCIMF recommendation, as
practice.
Cargo pipe systems in cargo tanks and on upper deck shall Stainless Steel AISI 316L (designing pressure 1.5
MPa). Shall use 45 elbows with real looping. Butt welding shall be used. No sleeve shall be applied. On valves
loose flanges can be used. All cargo piping on deck are insulated with hard covers protections to allow carrying
of cargo up to 85 deg C.
For electric ground of cargo pipe lines, yard can choose the way of using cable or plate. The manifold will
follow ANSI standard. The rest of piping system shall follow ISO standard.
See cargo pipeline diagram.
All jointing should be of Teflon materials.
Individual connecting pipe to be installed in the left and right slop tank to let oily water two stage deposit. Sections to both tanks to be connected an insulated 5-inch crossover line, close to the bottom without upward
loop.
Each cargo oil tank has a loading and discharge pipe. The cargo piping lines in cargo tanks shall be of Stainless
Steel AISI 316L as well with reference to cargo pipeline diagram.
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The Oil Companies International Marine Forum's (OCIMF) Standard for Tanker Manifold and Associated
Equipment, latest issue), to be accordance with, where relevant.
The cargo piping system to be arranged as follows: See Cargo pipeline diagram.
Cargo piping
according to the
agreed Cargo
pipeline diagram.
Drip trays Drip trays with gratings and drains to be fitted underneath Port &
Starboard cross over line manifold. Size and volume of trays shall
generally be according to IMO and OCIMF regulations. Drain lines
to be of mild steel also.
Cargo valve All valve to be remote operated by glycerin hydraulic system from
cargo control room.
After completion of the discharge phase the stripping of the cargo system to be carried out by the cargo pump
through stripping pipe in cargo tank suction well.
A cargo control room shall be fitted for remote control of the cargo pumps, stripping/slop pump, ballast pumps,
cargo valves and ballast valves. Also a remote tank level gauging system, an oil discharge monitoring system.
7022 Cargo Valves
Cargo valves should be in accordance with the agreed cargo pipe line diagram diagram. All material which
will be in contact with the cargo must be of stainless steel AISI316L and PTFE lining / sealing. Cargo valves
in cargo tank fully S.S AISI316L.
Butterfly valve’s, wafer type designed for two way flow direction.
.
703 Cargo Heating System
The cargo heating system to be capable of maintaining cargo at 850C with sea temperature 00C and ambient air
temperature -50C.
The heating capacity shall be sufficient to raise temperature of a full cargo load from 440C to 850C in 96 hours
with ambient air temp. –50C and sea water temperature 00C. Slop tank heating shall be capable of raising the
temp. of a full slop tank from 150 C to 660 C in 24 hours under the same ambient conditions.
The cargo should be heated with steam coils directly. Each heating coil should have a sampling cock on the
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 70 of 118
return line and the common return line should have a observation tank inside the pump room.
All Steam and Heating pipe and fittings on deck shall be of pre-insulated AIS 316L stainless steel materials.
Heating system valves to be manually operated from tank deck.
7031 Valve’s for heating coils
Steam supply valve’s, condense return valve’s and steam trap for cargo tank heating coils to be cast steel
material.
704 Cargo Tank Vent/Gas Free System
Inert Gas Line & System:
At appropriate place a Nitrogen Generator Room with adequate spaces, electric power supply, fixed piping on deck and
fittings, lighting, ventilation to be provided for Buyers to install the Nitrogen generator at later stage.
7041 Cargo Tank Ventilation
A ventilation system shall be installed providing for individual ventilation of each cargo tank. Each cargo tank
and slop tank shall be fitted with a gas freeing/venting line from tank hatch fitted with pressure/vacuum valve
and high velocity nozzle with discharges outlet according to request of Class above main deck.
P/V valves to be arranged and installed with adequate spaces from other equipment to allow easy access for
greasing and maintenance.
Each cargo tank and slop tank shall fit a high velocity pressure/vacuum valve for cargo tank ventilation.
All tank vent-lines to be gathered to two (2) central venting towers respectively.
No. of sets One (1) for each cargo and slop tanks, total 16 sets Type Class approved type High Velocity Press/Vac valve Setting press + 0.2 Kg/cm2
- 0.035 Kg/ cm2 Venting velocity Min. 30 m/sec. According the press/vac manufactory pressure drop
calculation Location In two venting towers/ position to be agreed by buyers prior the
construction.
All vent pipes shall be sloped to tank for drainage. AISI 316L stainless material shall be used. The cargo
ventilation pipes to be fitted with a ball valve(DN15).
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7042 Gas Freeing System
Sufficient gas freeing arrangements shall be provided to allow gas freeing according to IBC - Code 8.5. 12 for
minimum two (2) cargo tanks simultaneously.
Gas freeing system shall be provided by means of portable water/or air driven gas free fans.
Portable gas free fan
Number of set Two (2) set
Capacity 60 m3/min x 30 mm Ag
705. Vapour Return System
One vapour collecting main line on deck with valves connections to cargo tank vent lines are to be provided
for each cargo tank vapour emission.
Four (4) vapour connection shall be provided, two on each side of the ship, with presentation flanges at the
cargo manifold area.
One vapour connection shall be located forward of the manifold and one located aft of the manifold on each
side of ship.
Lines to be of stainless steel AISI 316L.
A sensor for remote reading of vapour pressure in cargo tanks shall be arranged as an integral part in deck
units for radar level system.
Vapour emission control system to be provided in accordance with USCG requirements except lightening
provisions.
706 Tank Cleaning System
Tank cleaning system and equipments shall be agreed in corporation with the Maker and Buyers and to comply
with SOLAS & MARPOL regulation. The tank cleaning system shall be arranged for washing with fresh water
and/or seawater, hot or cold with cleaning solutions. The washing system shall consist in a washing tank. This
tank shall be earlier mentioned deck tank. Tank wash pump, wash-water heater, tank wash lines and valves,
portable washing machines, tank wash pump and the already mentioned stripping pump. in principle it must be
possible to wash tanks with seawater and re-circulation of fresh water.
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All tank cleaning systems and equipment should be tested in presence of Class surveyors and Buyers
representative to confirm performance.
Tank cleaning pump shall take fresh water from clean fresh water tanks and/or sea water from sea chest.
Tank cleaning pump placed in pump room and driven by the motor connect through a gas tight oil filled
bulkhead gland
Arrangement for using cargo pumps to deliver re-circulated washing water to cleaning machines shall be
included.
Two (2) fixed tank washing machine twin nozzle 7mm. (abt.10 m3/h x 7.0 bar) to be installed on the top of
each cargo oil tank and one (1) set for each slop tanks. It shall be decided based on Manufacturer’s
recommendation.
The tank cleaning system to be designed to wash two (2) cargo tanks ( 4 washing machines apr.50 cbm/hr)
simultaneously.
Seawater shall be pumped by tank cleaning pump through a tank cleaning heater to provide to cleaning
machines with hot sea water at 600C from sea water supply of 50C.
i.e. the butter wash heater must be able to heat up apr. 60 cubic meter of water from 5 degrees up to 60
degrees.
The tank cleaning main pipes shall be arranged on the upper deck in way of cargo oil space, which to be fitted
with flexible connection (butterwash hoses) to the branch pipes with stop valve and to be connected with each
fixed tank washing machine.
The material of tank cleaning pipe to be stainless steel (AIS316L) on upper deck and stainless steel (AISI 316L)
in cargo tank.
A minimum of two tank washing hatches for each cargo tank to be provided for portable washing machines (9
m3/h x 8.0 bar). It to be situated to best advantage the shadow area of the fixed machines, which will be
verified by Manufacturer and approved by buyers prior construction.
Two (2) portable tank-washing machines and connected hoses to be supplied by the shipyard for tank cleaning
through tank washing hatches.
The wash tank heater must be designed especially for heating seawater for tank cleaning. Internally be made
with “U” shaped both sided welded pipes. Steam and condense flow trough the “U” pipes. All seawater
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 73 of 118
contacted parts made of seawater resistant material. The heater must be resistant to accidental heating up to the
steam temperature without water inside the cooler. Heating capacity sufficient heat seawater from 15 degree to
90 degree while using the normal capacity of the boilers.
Heater unit must exist in heater and condense cooler in series, complete automatic temperature regulating
valve makes CLORIUS – SAMSON or equal. To be completed, strainers, steam trap, pressure relief valve on
waterside, thermometers on seawater in and outlet, pressure meter for steam, and thermometers for outlet
condense. The capacity of this system is designed so that the total steam production of main boiler system can
be taken for heating up seawater. The wash water heater must be installed in the pump room. Installed in such
way that the heater can be removed for inspection/cleaning. Water flow from the tank wash pump to be pressed
trough the heater into the washing line on deck. Also possible to by pass and shortcut the heater. Wash water
heater.
High Pressure Cleaning System:
Ship to be provided separate high-pressure water cleaning system KARCHER or similar pump. pump to be
feed with pressurized water from a hydrophore that uses industrial water.
This system should be tested and demonstrated proper operation to buyer.
High-pressure Cleaning Pump: In the engine room to be installed a high-pressure pumps make KARCHER or equal. Pressure approximately
180 bars. This pump must be secured for running dry, switch on/off automatically when the trigger on spray
gun is pulled.
Lines, Hoses & Spray Gun: Pump connected to a fixed High Pressure pipe over total length of cargo area. Dimension 1 inch. Special
High pressure stainless steel quick connection coupling to be made near each tank-cover. System to be
completed two hands held trigger operated spray guns. Length of high pressure hose sufficient to reach all part
of tank and cargo deck.
After tank cleaning, the washed oily water in each cargo tank to be pumped by its own cargo pump to slop tank
or to the tank washing tank on deck and to be deposited through to be discharged out of side by the pump from
slop tank under oily water discharge monitor.(O.D.M.E.)
Tank cleaning pump Fixed cleaning machine Portable cleaning
machine
Cleaning heater
Number 1 set 30 sets 2 sets 1 set
Type Hyd. Cent. Twin nozzle 7 mm Twin nozzle 7 mm Shell & tube
Capacity 150m3x80mlc 10 m3/hr x 7 bar 9 m3/h x 7 bar 75degC
Material AISI316L
AISI 316L AISI 316L AISI 316L
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Date: 01 November 2006 Page 74 of 118
707 Auxiliary System & Equipment for Cargo
Cargo operations to be carried out from the cargo control room.
There shall be a loading and operational computer with terminal, display unit and printer installed in the cargo
control room.
Cargo and ballast pump control -- Remote start/stop the cargo & stripping pump, /tank cleaning
pump and ballast pumps from cargo control room.
-- Emergency stop from cargo control room and near the manifold
both sides..
Cargo/ballast valve remote control Cargo and ballast valves remote controlled by glycerin hydraulic
system.
Manifold valve control. Local operation at manifold side.
Cargo tank level gauge.&
Tank pressure gage.
Radar type with remote readout in C.C.R. for each cargo and slop
tank, Tank pressure sensor build in the radar unit.
Independent high level and
high-high level alarm
One (1) dual sensor for each cargo oil tank and slop tank with
audible and visible alarm.
Cargo tank temperature gauge At least two (2) sensors for each cargo & slop tank with remote
readout in cargo control room.
Ballast tank level gauge Electro-pneumatic type or sensor type with remote readout from
cargo control room.
Draught gauge (2 points) Electro-pneumatic or sensor type with remote readout from cargo
control room.
Oil pollution prevention system 1 - Oil discharge monitoring & control system according to
MARPOL 73/78 (Annex I) and light chemicals
Portable cargo monitoring
equipment
1 - For ullage measuring, oil/water interface detecting, hand
dipping, temperature measuring by means of portable
oil/water interface detece on upper deck.
708 Cargo Control Room
One (1) cargo control room to be arranged at accommodation deck forward.
One (1) micro-processor based cargo monitoring and loading computer including two (2) screens, two (2)
keyboards and printer at the control console and panel in cargo control room to cover the following functions:
• Remote level measurement alarm in cargo /slop tank.
• Remote Cargo Tank pressure measurement read out with alarms in CCR.
• Remote level gauging of all ballast tanks, F.O. tanks, F.W. tanks.
• Independent high level (95%) & high-high level (98%) (overflow) alarm for cargo/slop tank.
• Temperature monitoring of all cargo tanks F.O. tanks and slop tanks.
• Draft of the vessel (2 points)
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 75 of 118
• Oil discharge monitoring & control system
• Hydraulic power station for valve operation
• Position indication of remotely controlled valves
• Loading computer with software programs (on line with the monitoring system.)
• Remote read out pressure and vacuum meters of All Cargo pumps in CCR.
• Remote read out pressure and vacuum meters of ballast/tank cleaning pumps in CCR.
• Remote read out of temp. and alarms of cargo pump readings and all bulkhead glands.
• Remote read out of Cargo temperature and Pressure from manifold.
709 Oil Discharge Monitoring and Control
For the prevention of marine pollution, an oil discharge monitor, control system and potable oil/water interface
device to be provided to meet IMO RES. A586 (XIV) requirements. The system comprised the following main
components.
(1) Oil content meter in pump room
(2) Flow meter in pump room
(3) Operator's console in CCR
(4) Valve control unit in pump room
(5) Electric motor in engine room.
Drip trays with mild steel grating shall be fitted beneath port and starboard manifolds. Which size and volume
of trays shall refer to IMO & OCIMF requirements.
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Date: 01 November 2006 Page 76 of 118
800 Hull Piping System
801 Ballast System
Ballasting and de-ballasting system to be provided for double bottom and wing ballast tanks as well as fore
peak tank and after peak tank. Two (2) sets of single stage, horizontal centrifugal type water ballast pump
placed in pump room driven through a gas tight oil filled bulkhead gland by electric motor placed in engine
room. Ballast pump and gastight bulkhead passing according to class. One (1) ballast ejector of 50 m3/h to be
fitted in pump room, which driven by the ballast pumps. Ballast Pumps mechanical connected trough a
Stromag Periflex or Fenner coupling and a oil filled, gastight bulkhead passing to a electromotor placed in the
engine room. Bulkhead passing provided with high temperature alarm with read out in CCR.
The pumps to be remotely operated from cargo control room, and shall have piping arrangement for effective
filling and discharge of water ballast tanks.
Remote read out Pressure and Vacuum meters in CCR.
The ballast pumps to have suction from sea chests in pump room and deliver to two (2) main ballast lines
installed in each side of the double bottom with branches to each ballast double bottom and wing tank as well
as fore peak tank.
The particulars of water ballast pump to be as follows for each to deballast the vessel within five (5) hours.
No. of sets Two (2)
Type Single stage, horizontal centrifugal type pump
Capacity 300 m3/h
Pressure 25 mLc
Drive Electric motor driven
Casing Bronze
Impeller Bronze
Shaft Stainless steel
Seal Mechanical
A ballast delivery line to deck in cargo manifold area for connection to cargo cross over by spool-piece for
emergency ballasting to be arranged.
Shifting of ballast water between tanks shall not be considered.
Ballast valves shall be of butterfly type and remote control by glycerin hydraulic system from CCR.
For the remote level measuring system of water ballast tanks to be controlled and readout at cargo control
room.
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Date: 01 November 2006 Page 77 of 118
Arrangement of small hatches for local gas detection in ballast tanks and closed space in dangerous area to be
fitted ( Pipes on main deck, designed for portable gas detection equipment).
The fire/general service pump shall be connected to the sea main suction line and serve as aft peak tank ballast
pump.
All piping support securing bolts and nuts to be provided with anti-vibration arrangement such as double nuts.
Piping material Piping Dia. Piping
Material
Flanges and fittings Remarks
WB pipes All artificial ISO
Valves
Valve type No. Dia. Casing material Trim Material Remarks
Butterfly valve acc.drwg All Cast Iron Bronze
Non-return
valve
acc.drwg All Cast Iron Bronze
802 Bilge Piping
Bilge piping shall be arranged according to the Class Rules and Authorities requirements.
Emergency bilge connection shall be arranged as required by class rules.
Water in steering gear room shall be drained to engine room and bilge wells through self-closing valve in
engine room.
Chain lockers, stores rooms in forecastle, cofferdam and bow thruster room to be served by bilge ejectors of
40~50 m3/h. Drive water supplied by fire/deck-wash line.
Bilge, fire & general service pumps in E/R take suction from bilge wells and discharge overboard directly in
emergency case only. One small bilge pump takes suction from bilge wells and discharge into the bilge water
holding tank or overboard.
One (1) set of oily water separator shall be provided.
The oily bilge separator takes suction from bilge wells and bilge water holding tank, the oil in the bilge water
will be separated from the bilge water and separated bilge water (<15ppm) will be discharged overboard. The
oily water separator shall be provided an automatic oil drain control device, oil content monitor and a 15 ppm
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 78 of 118
alarm and necessary fittings such as valves and a pressure gauge. Oil content in discharge water shall be
constantly monitored.
In case of the high oil content effluent will be automatically directed back to bilge water holding tank and give
out an alarm signal.
bilge water holding tank and dirty oil tank with capacity according to rules to be arranged.
Oily bilge pump
No. of sets One (1) set
Type Screw or piston type or Manufacturer’s standard
Capacity To be according to oily water separator capacity
Pressure ~3 bar
Drive Electric motor
Oily water separator
No. of sets One (1) set
Type Gravity difference separator without filter cartridge
Capacity 1.0 m3/hr, below 15 PPM
Automation Automatic oil contents monitoring and 15 ppm alarm system accordance
the regulations to be used also in special area annex 1
Heating if any Elec. heating
803 Drainage System
Sufficient number of scuppers of suitable dimension to be fitted to all decks, deck house and casing tops, etc.
Spill tank shall be allocated at the after ballast tank.
Deck opening to be closed off by mechanical expanding plugs.
804 Sounding System
Sounding pipes for manual sounding shall be fitted to F.O. tanks, F.W. tanks, W.B. tanks, sludge tanks, drain tanks,
cofferdams, void spaces, chain locker etc., except cargo and slop tanks. Pipes shall terminate at accessible
locations.
Each sounding pipe shall be clearly marked with the tank number by welding bead.
Graded view glass to be used where suitable, for instance for LO tanks.
The sounding points shall be located as near to the suction pipes as possible. Small tank sounding connection
shall terminate at the tank.
No sounding pipes to pass through cargo tanks.
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Date: 01 November 2006 Page 79 of 118
Sounding pipes extending to open deck to be fitted with bronze cap.
Self closing sounding head to be fitted for sounding pipe of double bottom tanks in engine room with self-closing
cocks and screwed caps..
The material of sounding pipes for WB and FW tanks shall be galvanized steel and for oil tanks (not cargo tanks)
shall be mild steel.
The material of sounding/ullage pipe of cargo tanks should be of stainless steel and should be perforated pipe with
calibrated vapour lock and on top a valve connection for the UTI .
A remote sounding system for draught, water ballast tanks, F.O. tanks and F.W. tanks based on electric pneumatic
measurement to be fitted.
Sounding and filling pipes for drinking water tanks to be provided with locks to meet ISPS codes.
805 Air-conditioning System
Air-Conditioning system to be installed to serve as ventilation, cooling and heating for all living rooms, public
rooms, offices and wheel house.
All air-conditioning and ventilation systems to be tested and measured during sea trials. Full report to be
submitted to Buyers for approval and acceptance.
Heating shall be executed with both electrical and steam elements.
Main particular of air-conditioning system to be as follows:
R-404A direct expansion, electric motor driven. With condenser, receiver, gas dryer and separator.
Central units, consist of supply fan, heating chamber, cooling chamber, sound dampers, filters and necessary
attachments. The air supply to be interconnected between the outlets of central units. Steam heating coils to be
installed in unit.
The system is to consist of a high velocity, central unit, single duct system consisting of light pre-fabricated and
pre-insulated pipes, preferably two concentric tubes mineral wool in between and designed to meet following
conditions:
Tropical condition
Winter Condition
Water temperature +32OC 0OC
Outside air temperature / Relative Humidity +35OC / min. 70 % -20OC / 50 %
Inside air temperature / Relative Humidity +22OC / 50 % +20OC / 30 %
In mild climates for certain sailing area when cooling is not required, the system to serve as mechanical
ventilation for the accommodations, supplying fresh air only. And air changes are to be about 6 times per hour for
living room and to be about 8 times per hour for public room.~ 8 times/b for wheel house spot cooling
Technical Specification of 7500 DWT IMO II Chemical Tanker
Date: 01 November 2006 Page 80 of 118
Central exhaust re-circulation system shall be applied, 40% fresh air supply shall be maintained.
One (1) packaged air conditioning unit to be arranged for engine control room.
Tropical condition
Outside air temperature / Relative Humidity +35OC / 70 %
Inside air temperature / Relative Humidity +20OC / 50 %
At least 2 air changes per hour.
Refrigerant for all air conditioning plants to be R-404a.
In addition a mechanical fresh air supply of 10 times//hr air change with emergency stop and fire damper to be
arranged.
806 Mechanical Ventilation
Mechanical Ventilation for Accommodation
Following compartments to be served by mechanical supply or exhaust ventilation system, capable of giving
the following rate of air changes per hour.
Compartment
Air change
(times/hour)
Mechanical Supply
(times/hour)
Mechanical
Exhaust
(times/hour)
Living space 6 - -
Public space 8 - -
Office space 8 - -
Wheelhouse & chart space 8-10 - -
Cargo control room 10 - -
Sanitary space - - 15
Laundry, shower rooms - - 10
Galley - 40 40
Locker - - 10
Purifier Room 45 45
Ballast Pump room 45 45
Paint store 20 20
The ventilation system to be of low pressure system.
For compartments where only mechanical exhaust ventilation is applied, the air to be supplied from adjoining
passageways through louvers on the entrance door and/or by natural ventilators.
Mechanical Ventilation for Machinery Space
(1) Engine room fan The fans for engine room to be axial flow type. The ventilation fan to supply fresh air to
the operating stations and necessary places in the engine room through air ducts.
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Date: 01 November 2006 Page 81 of 118
Number of set 2 sets
Capacity each 100% higher than consumption of all combustion machinery and boilers
according to class rules. Not less than 50000 cum/hr.
Type -- Axial flow
-- Reversible el.-motor driven.
-- One of the fans to have start/stop outside engine room.
(2) Engine control room ventilation
supply fresh air from engine room duct.
(3) Purifier room supply fans
Number of set Exhaust
Capacity each According to size of compartment for 45 times/hr air change
Type Axial flow
Non-reversible, el.-motor driven.
(4) CO2 room exhaust fan
Number of set 1
Capacity each According to size of compartment
Type Axial flow
El.-motor driven.
(5) Bow thruster room fan
Number of set 1
Capacity each Sufficient to achieve 25 air changes per hour
Type Axial flow , El.-motor driven.
In the ventilator ducts just below the fan unit silencers to be installed.
The fan and driving motor to be incorporated in the fan casing, the fan and motor to be mounted in common
bed plate. Fan impeller to be dynamically balanced.
807 Natural Ventilation
Mushroom, gooseneck or wall ventilators to be fitted for ventilation of store spaces, steering gear room, etc.,
wherever.
900 Machinery Part
901 General
The main propulsion unit shall be two medium speed diesel engines through gear boxes, and driving two
controllable pitch propellers through line of shafting respectively.
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Date: 01 November 2006 Page 82 of 118
The engines to be arranged with clock wise direction looking forward.
Both main engines must run in the same rotation direction.
Counter rotation as required by the CPP propellers to be provided by the gearboxes.
The maneuvering stand for the main engines shall be located in wheel house central console and bridge
wings .and in the centralized control room in the engine room. For emergency condition it shall be controlled
at engine side.
The machinery installation of the ship to be designed, constructed and installed in accordance with the
requirements of Classification Society.
The main engines shall be designed so as to burn heavy fuel oil with a viscosity up to 380 cSt and temp. in
accordance with maker’s instruction under a normal sea going condition & maneuvering, and also heavy fuel
oil shall be used for, starting as well as before stopping conditions.
The electric generating system shall consist of three (3) main diesel generators, and one (1) emergency
generator. And 1 shaft generator
The main switchboard shall be suitably arranged in the centralized control room and emergency switch board
shall be arranged in the emergency generator engine room.
The capacity of the power plant to be based on the following conditions:
Condition Number of sets working
Normal sea service One D/G or two shaft generators
Sea service with tank washing Two D/G or one D/G with shaft generators
Full Discharging cargo Two D/G
Maneuvering with bow thruster One D/G and two shaft generators
Harbor One D/G or one emergency generator
Generator engines shall be designed to burn marine diesel oil.
The heating plant for the vessel shall consist of two (2) oil-fired steam boilers and two (2) exhaust gas
economizer. Two combined oil fired/exhaust gas boilers can be the alternative arrangement.
The oil fired steam boiler is used for fulfilling the usage of cargo oil tank heating, cargo oil tank cleaning sea
water heating, lube oil heating, and hot water heating for domestic usage.
The oil fired steam boiler shall be designed to burn heavy fuel oil with a viscosity up to 380 cSt and temp. as
per makers instruction. ( same as main engine)
Air compressors and pumps for the propulsion system shall be so designed that the main engine is
satisfactorily operated at maximum continuous output with following design conditions:
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Date: 01 November 2006 Page 83 of 118
Sea water temperature 320C
Fresh water temperature 360C
Ambient temperature 450C
Atmospheric pressure 0.1 Mpa
Relative humidity 60%
Centralized and automatic controls shall be provided for the propulsion plant, auxiliaries, etc. and to comply
with the requirements of BV AUT- _ UMS notation. Emergency escapes to be provided with locking device from the inside to meet ISPS and ISM requirement. One set of Master Calibration Gauges with certificates for calibrating all manometers and thermometers onboard to be provided.
902 Principal Particulars of Machinery
Transfer Arrangement: The design and arrangement of the machinery space shall be such that components, as a dismantled diesel generating set,
pumps, electric motors etc., can be removed from their positions and easily be unshipped through hatches. One flush
hatch in upper deck above main engine room or other appropriate position. Size must be proportional to the size of the
shaft generator or turbo-charger or one coil of the steam generator/boiler which ever is greatest. One lifting beam from
engine room to the machinery workshop to be arranged a runner for 2 tonnes if possible.
9021 Main Engine
Two (2) – MAN B&W 7L28/32A approx. 1715 kW each
4-stroke cycle, in-line, water cooled, direct injection, single acting, trunk piston unreversible, medium speed
type marine diesel engine with turbocharger and air cooler.
Type MAN B&W
Number of set Two (2) set
Max. Continuous Output 1715KW each
Continuous Service Rating
No. of cylinder 7
Dia. of cylinder Acc B&W specification
Stroke of piston
Brake mean eff. Press
Fuel oil consumption rate
Acceptance test run shall be carried out with MDO-fuel on maker’s test bed according to the program of the
maker’s standard test bed run.
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Date: 01 November 2006 Page 84 of 118
Fuel oil consumption according to ISO Standards 3046/l, based on a net calorific value of 42700kJ/kg (10200
kcal/kg) at maximum continues rating:
Main engine to comply with MARPOL 73/78 Annex VI Regulation 13 (Mandatory code on NOx emission).
9022 Flexible couplings
Maker Vulkan or similar. final coupling type will be based on the toisional vibration calculation.
One(1) Flexible coupling engine – gearbox
One(1)Flexible coupling engine – gearbox PTO
9023 Reduction gearbox
Model:
Type: Single stage reduction gear, vertical offset with Hydraulically operated
multi-disc clutch
Number: Two(2) sets each with counter rotation direction
Reduction ratio: Approx. 3.5 :1
Propeller speed: To be determined
9024 Shaft and Propeller
• Shaft
The construction and components of shafting is according to the standard of maker and rule of class.
Gear ,shafting and propeller shall be supplied with package by
The maker including controlling device.
• Shaft shall consists of:
Two(2) propeller shafts
Two (2) intermediate shaft, if any
The shafting of forged steel to consist of one propeller shaft with gear box subject to main engine maker final
configuration.
Aft end of the propeller shaft to be of solid coupling flange. Fwd end the propeller shaft to be of hydraulic
flange coupling.
Aft and fwd end of the intermediate shaft to be of solid coupling flange.
The hollow bored shaft, containing oil pipes for propeller blade adjustments has an integral forged flange at
propeller sides and a hydraulic coupling at forward side, so that with draw of the shaft to aft is possible.
• Stern Tube and Bearing
The stern tube shall be of welded construction of steel plate and welded to the stern frame boss and constructed
as a part of hull structure.
The stern tube to be provided with white metal lined cast iron bushes having dimensions as per rules
requirements. The stern tube inner part to be oil filled.
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Date: 01 November 2006 Page 85 of 118
Oil pressure to be provided by gravity tank installed at suitable height in accordance with the seal maker’s
recommendations. Lubricating of the stern tube bearings to be carried out in accordance with Builder’s
standard practice.
A Torsional analysis for the propulsion system, consisting of the main engine shafting , propeller & PTO
system will be carried out by the manufacture of the main engine in accordance with Classification Societies.
Bush bearings shall be installed in accordance with makers instruction.
Two (2) controllable-pitch propellers shall be installed in accordance with the CPP manufacturer's standards.
The propeller rated for maximum continuous rating at Propeller speed rpm. The propeller shall be 4
bladed.
The blades are bolted to the hub and the hub to
contain a hydraulically operated actuating cylinder for propeller blade adjustment. The hub is flange mounted
to the propeller shaft.
Type Controllable pitch type
Number Two (2) sets, counter-rotation
Diameter of propeller Te be determined
Revolution of propeller To be determinded
Material Ni-Al-Bronze
Manufacturing tolerance Class I of ISO 484/1
Spare propeller One (1) spare blade for each propeller
each ship
A hydraulic power system to be supplied, consisting of one set of hydraulic oil tank and electric motor driven
pumps according to Maker’s recommendation.
Manoeuvring by pitch and speed control to be operated from the wheelhouse.
The propulsion package from one source as a matched system such as a complete MAN B&W propulsion
package or similar to be provided.
Propulsion control, monitoring and alarm system should be package supply from main engine maker or from
Lynsoe.
9025 Boiler Plant
The vessel to be fitted with two (2) oil-fired steam boilers and two (2) exhaust gas economisers. (Two
combined oil fired/exhaust gas boilers are acceptable as alternative) The boiler’s capacity to be suitable for
max. cargo heating and tank washing requirements.
Two (2) boiler feed water pumps to be provided.
HFO/MDO Change over unit to be supplied.
The boiler to supply heated steam to the following system:
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Date: 01 November 2006 Page 86 of 118
-- Heating coils for cargo tanks (AISI 316L)
-- Heating coils for slop tanks (AISI 316L)
-- Tank washing heat exchanger
-- Heating coils for HFO storage, service and settling tanks
-- Heating coils in sludge and dirty oil tanks.
-- Steam heating of fuel system components as required
-- Accommodation heating via. Air conditioning unit
-- Domestic hot water heating
Cleaning flush lines for sea chests and box coolers
Deck machinery to meet ICE class 1A requirements
� Oil-fired Boilers
Type Oil fired steam boiler Heavy Oil 380 cSt.
Number Two(2) sets
Capacity To be calculated
Fuel Heavy Oil 380 cSt. and Marine diesel oil at ignite & before stop furnace
The boiler will be oil-fired type of vertical or horizontal cylindrical design, completely insulated and provided
with the following valves and gauges.
Main steam valve, safety valves, level gauges, feed water shut-off and non-return valves, scum valves and
pressure gauges.
Remote actuation devices to be provided for all boiler safety valves for testing purpose.
• Exhaust gas economisers:
Type Exhaust gas combined boiler
Number Two (2) sets
Capacity, exhaust heated Max. utilisation of available waste heat in main engine exhaust,
according to manufacturer’s recommendation
Burner capacity to be calculated.
Pressure As per manufacturer’s
Steam pressure: 0.7 MPa
9026 Electric Generating Plant
• General
The diesel driven generators are arranged in the engine room, while the diesel emergency generator is installed
outside of the engine room in accordance with Classification Societies requirements. Three (3) main generator
sets and one (1) emergency generator set to be provided.
Two (2) PTO shaft generators from M.E. & gearbox also shall be installed .
All generators to be of drip-proof marine type, brushless and self-magnetizing with voltage regulation. The
power plant to include:
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Date: 01 November 2006 Page 87 of 118
Three (3) --- Diesel generator sets
One (1) --- Emergency generator
Two (2) -- Shaft Generators
Two shaft generators to be fitted on a primary PTO from the gearboxes.
Shaft generators must be able to run parallel with the main generators during take over only.
Shaft generator to feed the bow thruster during maneuvering
Main diesel generator sets
(A) Diesel engine:
Type Turbo-charged, 4-stroke marine diesel engine.
Rated
Kw
According to Electrical power calculation in connection with the electrical
pump drive system.
Rated revolution about 1800 rpm
Cooling Fresh water, Box cooler
Lubrication Sump
Fuel type Marine diesel oil
Starting Compressed air
Output of main generating diesel shall be at one end to drive generator,
Arrangement for pre-lubrication of stand-by engine is to be provided. Start/stop from ECR or local, whichever
is in control mode.
Diesel engines for main generators driving to have continuous rated output to drive the generator under the
ambient conditions stipulated by the Classification Society.
The engines to be of the marine high speed, four-stroke type, with direct injection, supercharging with internal
fresh cooling water and lub oil system.
Each engines together with its generator to be installed elasticity to the ship structure. Engine to be fresh
water-cooled.(Box coolers) Each engine to have attached freshwater circulating pump, F.W. cooler and L.O.
cooler, and being fitted with suitable prefabricating equipment
Cooling system Box coolers
Cylinder cooling: internals F.W. cooling system
Charge air cooling: F.W.cooled
Lubricating oil cooling: internal F. w. cooled
Starting air system: compressed air 30 bar
Fuel oil system: MDO
(B) Alternator:
Drip proof, self-ventilated, brushless type about ) AC.450V, 60Hz. at 1800 r/min. According to Electrical power
calculation in connection with the electrical pump drive system
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Date: 01 November 2006 Page 88 of 118
� Emergency generator set
A diesel driven emergency generator set to be provided in emergency generator room. The emergency generator
room is to be well insulated and diesel generator to be mounted on resilient foundations to minimise noise
transmission.
(A) Emergency Diesel
Type 4-stroke, marine type,
Rated Output abt. 250 kw
Rated revolution 1800 r/min.
Cooling Air-cooled (Radiator cooler)
Lubrication Sump
Fuel type Light diesel oil
Starting Electric batteries / Manual hydraulically
Diesel engine to have a continuous output suitable for driving the generator under those conditions stipulated by
the Classification Society.
The engine to be of the four-stroke type and to be air-cooled.
The diesel and generator are assembled on a common base plate and mounted elasticity.
Engine Revolution: 1800 rpm
Cooling system: air/water
Fuel oil: MDO
Starting of the engine will be arranged by 2 independent starting devices.
(B) Emergency Alternator:
Drip proof, self-ventilated, brushless type about 200 KVA (about 250 Kw) AC.450V, 60Hz. at 1800 r/min.
Output 250 kw
Revolution 1800 rpm
Voltage 450 V
Frequency 3 phase, 60 Hz
9027 Compressed Air Plant:
� Air compressor and air vessel
The main. air compressors to be of single acting two stages, piston type and to be driven by electric motors.
Main air compressors to be of air cooled. Its air cooled.
Main air compressors to be fitted with safety valves, inlet air strainer, pressure gauge, cooler, drain cock, trip
device for lub. Oil low pressure and compressed air high temperature, and other necessary fittings, according to
the manufacturer’s standard.
Automatic stop and start device to be provided for main air compressors. Air compressor to be actuated by the
pressure of the main air and aux. Vessels.
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Date: 01 November 2006 Page 89 of 118
� Air Compressors:
Name Type No. Capacity Pressure
(MPa)
Main air
compressor
Motor driven vertical
2- stages 2 3/h
Working air
compressor Screw or lave 1 200 m3 8 ~1.0 MPa
It looks like the air compressors are to small must be calculated. The capacity of air compressor will be
investigated.
� Air Reservoirs:
Name No. Type Capacity (m3) Pressure (MPa)
Main start-air vessel 2 Cylindrical ,Welded
steel construction
0.5 3
Auxiliary air vessel 1 Ditto 0.1 m3 1.0 MPa
9028 The main start-air vessel shall supply to the control air system through pressure reducing valve Pumps
Capacity of pumps to be selected according to Class and Regulations and actual requirements Capacity and
pressure to be sufficient for the service intended. Pumps shall have non-overloading characteristics. In general
the water pumps to be of centrifugal type and to be driven by electric motor.
Small pumps for circulating sanitary and hot water services will be of horizontal centrifugal type. Centrifugal
pumps, where necessary, to be fitted with priming equipment for self-priming.
And the oil pumps to be of screw type and gear type and to be driven by electric motor.
The capacity of pumps to be selected according to Class and Regulations and actual requirements also. The
Motor power and revolution shall be decided finally by the manufacturer's standard.
Sludge and oil bilge pumps to be of the worm or gear type.
� Centrifugal Pumps
Principal material to be as follows:
Component Fresh water pump Sea water pump Boiler water circulating
pump
Casing Cast iron Bronze Ductile cast iron
Technical Specification of 7500 DWT IMO II Chemical Tanker