087193 ut 733-3 g6 r0

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UT 733-3P08-7193Rev.0, 09.09.2008Page 6.1

Rolls-Royce Marine ASShip Technology Offshore - Ulsteinvik

Service box 22, N-6025 Aalesund, NorwayTel.: + 47 815 20 070. Fax: +47 70 01 40 31

Enterprise number NO 980 371 379

MAIN GROUP 6

MAIN MACHINERY COMPONENTS

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MAIN GROUP 6 ............................................................. ................................................................ .............................. 1

MAIN MACHINERY COMPONENTS .................................................................... ................................................. 1 MAIN GROUP 6 - MACHINERY MAIN COMPONENTS.......................... ................................................................. 3

General......................................................................................................................................................................................3 Environmental Conditions ...................... ....................... ...................... ....................... ..................... ...................... ................... 3

60 DIESEL ENGINE FOR PROPULSION.......................................................... ...................................................... 5 Propulsion configuration...........................................................................................................................................................5

601 Main diesel engines...................................................................................................................................... 5 Flexible couplings.....................................................................................................................................................................5

63 TRANSMISSIONS ....................................................... ..................................................................... ................... 6 634 Controllable pitch propeller plant ............................................................ ................................................... 6

Propeller shaft Brackets ..................... ....................... ...................... ....................... ...................... ...................... ...................... . 6 El. remote control......................................................................................................................................................................6 637 Main Gear with Thrust Bearings, Couplings............................................................................................... 6 Main gears.................................................................................................................................................................................6

638 Step-up gear for FiFi-pumps........................................................................................................................ 7 64 BOILERS, STEAM AND GAS GENERATORS................................................................... ............................... 8 65 GENERATORS SETS FOR MAIN EL. PRODUCTION.......................................... ............................................ 8

652 Aux. el. generator set for main el.production .............................................................................................. 8 66 OTHER AGGREGATES AND GENERATORS FOR MAIN AND EMERGENCY ELECTRIC POWER PRODUCTION............................................................. .................................................................... .............................. 9

665 Emergency generator set ............................................................................................................................. 9 667 Shaft generator............................................................................................................................................. 9

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MAIN GROUP 6 - MACHINERY MAIN COMPONENTS

The main propulsion system shall comprise of two medium speed marine diesel enginesdriving two controllable pitch propellers through twin reduction gearboxes and propellershafts.

General All machinery to be delivered with certificates according to the Class requirements wherenothing else is stated.

Spare parts, ref. main group 1 item L.

Machinery foundations shall be designed with a view to reduce the extent of vibrations andnoise in the vessel. Main engines to be rigid mounted.OPTION: Main engines to be flexible mounted.OPTION ENDS.

All machinery to be marine type, and complete with all normal outfitting and accessories.

Major machinery components such as propulsion machinery, shaft bearings and deck machinery, shall be mounted on hardened epoxy resin chocks.Minor components can be placed directly on the foundation.

All diesel engines above 130 kW (except emergency DG engine) shall be NOx compliant.

The torsional vibration characteristics of the propulsion system shall be approved by Class.

The arrangement and layout of the machinery installation shall allow adequate access tocontrols, components, valves and pipe joints such that maintenance, examination andreplacement can be done by minimum disturbance to the pipes and fittings.

Shipping / unshipping route shall be clearly marked for all machinery.

Builder shall be responsible for the maintenance and preservation of all machinery andequipment until accepted by the Owner.

All tests and trails for main and auxiliary machinery, equipment, system, etc. includingopening up of machinery shall be carried out in accordance with ClassificationSociety/ONGC requirements, ref. also item 15.

Environmental ConditionsFollowing ambient conditions shall be taken as the basis for design of machinery:-Air temperature : 45C

Average machinery space temperature : 0C 55C

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Sea water temperature : 32CRelative humidity : 96 %List, rolling, trim and pitch : As per Class Rules

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60 DIESEL ENGINE FOR PROPULSION

Propulsion configurationThe vessel shall be arranged with two (2) independent propulsion systems.

Each propulsion plant shall comprise a 4-stroke turbocharged medium speed diesel engine,driving one controllable pitch propeller via reduction gearbox.

601 Main diesel engines

SFIcomp. id

Descriptionof component

No Type Cap.each[kW]

Eng.rpm

Fuel Flywheel enddrive

Pumpenddrive

601-101 Main dieselengine

2 BergenC25:33L6P

1800 1000 Gasoil / HFHSD

Mainreductiongearbox

Fi-Fipump

Ratings are according to ISO 3046/1.The above ratings shall be available under following operating conditions without any de-rating:Barometric pressure : 1000 mbar

Turbocharger air suction temperature : min. 0C - max. 45C (See note 1)Charge air cooling water inlet temperature : max. 37CRelative Humidity : 60 %

Note 1:An automatic overload protection (fixed pitch reduction) shall be arranged for operation withturbocharger air suction temperatures between 45C and 55C. The pitch reduction shall beapprox. 5% of MCR. (Value to be confirmed by engine maker).

Flexible couplings

Flexible couplings to be provided by engine supplier as follows: Main engine Main reduction gear Main reduction gear Shaft generator Main engine Gear for Fi-Fi pump

Type of couplings and size of flywheel shall be decided based in approved torsion vibrationcalculations.

Spark arrestors to be provided to the exhaust system.

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63 TRANSMISSIONS

634 Controllable pitch propeller plant

Two (2) off 4-blade controllable pitch propellers to be arranged.For details on propellers; ref. item 637.

Direction of rotation: According to model test report

Two fabricated mild steel stern tubes shall be fitted, secured at the bulkhead and at the Aframe boss. Each shall be fitted with a cast iron white metal lined bushes, and arranged for oillubrication. The stern tubes shall be fitted with seals, all in accordance with propellermanufactures standards.

Two (2) stern tube oil tanks shall be provided, one to feed each stern tube bearing by gravity.The tanks shall have air release arrangements, an oil level gauge, and low level alarm.

Propeller shaft BracketsPropeller shaft brackets to be made of welded steel of adequate dimensions and to be wellsupported in hull constructions to prevent vibrations.

El. remote control Electronic remote control, ref. item 79.

637 Main Gear with Thrust Bearings, Couplings

Main gearsTwo (2) nos. KAMEWA-ULSTEIN 4 bladed C.P.Propulsion Systems,Type 480AGHC-KP45-60 A/4 I-B - 2750 to be delivered and installed, complete withintermediate shafts, bearings, etc.

Pitch control and feed back system shall be integrated in the main reduction gearbox, andgearbox sump shall be utilized as oil reservoir for both for the gearbox and the propeller.

Sealing system shall be Simplex compact type with ceramic-coated liner.Rope cutters to be arranged.

The propulsion plant shall be dimensioned and designed for the ships speed and applicationand for the installed engine power as follows:

Engine power : 1800kW / 1000 RPMPropeller speed, approx. : 208 RPMPropeller diameter, approx. : 2750 mm

Each installation comprising:

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1 pc. 4-bladed CP propeller with hub and blades in Ni.Al. Bronze, manufactured to ISO R484 Class I standard (ISO/TC8) and statically balanced.

1 pc. Propeller shaft arranged for high pressure hydraulics1 set Liners, glands and gravity tank for oil lubricated stern tube1 pc. Reduction gear box, with built-in clutch, thrust bearing, servo motor for pitch

actuation, mechanical built-on servo pump and local pitch control lever1 pc. Electric driven standby lub oil/servo pump1 pc Primary PTO for transferring 1000 kW @ 1500 rpm1 set Intermediate shafts ahead of gear, including couplings and bearings1 set Necessary hydraulic equipment, like cooler, valves, filters, etc.1 set Remote control system, ref. item 79.

638 Step-up gear for FiFi-pumps

One (1) off Step-up gear for FiFi-pumps to be connected to each main engines front endPTO via flexible coupling.Ref. also item 601 and 814.

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64 BOILERS, STEAM AND GAS GENERATORS

Hot water calorifier, ref. item 581.

65 GENERATORS SETS FOR MAIN EL. PRODUCTION

652 Aux. el. generator set for main el.production

The vessel to be equipped with diesel engine driven auxiliary generator set as follows:

SFIcomp. id

Descriptionof component

No Gen. outputapprox.

Volt.[V]

Freq.[Hz]

Rpm

Gen.coolant

Eng.fuel

652-101 Aux.generator set

2 280 kW -(350 kVA)

400 50 1500 Air Gas oil / HFHSD

The engines shall be four-stroke, single acting, trunk type engines, each equipped with turbo-charger, charging air coolers and load dependent temperature control system.

Diesel engine and generator shall be installed on a common bedplate.Flexible coupling shall be provided between diesel engine and generator.

Base plate shall be flexibly mounted. Special care shall be taken, to reduce the vibration levelon the skid.The diesel engine manufacturer shall be responsible for the mechanical assembly of the dieselengines and the generators.

The generator set is to be connected to main switchboard, and to be flexible mounted to thevessels structure.

The diesel engine shall have built on fresh water cooling, lubrication and fuel oil system as

per manufacturers standard, and to be pneumatic started.

The diesel engines shall have built-on still stand heater, the generator shall have built-on anti-condensation heater.

Spark arrestor to be provided to the exhaust system.

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66 OTHER AGGREGATES AND GENERATORS FOR MAIN

AND EMERGENCY ELECTRIC POWER PRODUCTION

665 Emergency generator set

One (1) off radiator cooled emergency generator set, running on gas oil / HF HSD fuel, to beinstalled.

SFIcomp.id

Descriptionof comp.

No Gen. outputapprox.

Volt.[V]

Freq.[Hz]

Rpm

Gen.cool.

Temp.class

Encl.

665-101 Emergencygen. set

1 48 kW (60 kVA)

400 50 1500 Air F IP23

If a black out occurs for the main generator systems, the emergency generator set shall startautomatically and connect to the emergency switchboard, according to Class/statutoryrequirement.Instructions containing information of required fuel oil tank level, ventilation openings,valves, etc. shall be fitted at the emergency switchboard, to ensure that when the vessel isunder way, all control devices are in correct positions for the independent emergencyoperation of the emergency generator set and emergency switch board.

Transitional batteries shall be provided as per Class requirements.

Generator to be air cooled with fine grade filters.

The diesel engine shall have built-on still stand heater, the generator shall have built-on anti-condensation heater.

Electric start to be provided with two (2) sets of batteries.

Spark arrestor to be provided to the exhaust system.

667 Shaft generatorTo each main reduction gear is connected, via flexible coupling, one (1) off Shaft Generatoras follows:

SFIcomp.id

Descriptionof comp.

No Capacityapprox.

Volt.[V]

Freq.[Hz]

Rpm

Gen.cool.

Temp.class

Encl.

667-101 Shaftgenerator

2 1000 kW 1250 kVA

400 50 1500 Freshwater

F IP44

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The shaft generator to be equipped with: Anti condensation heaters Excitation equipment (AVR) Winding temperature sensors Bearings temperature sensors Sleeve bearings (cooling and lubrication according to suppliers recommendation). Cooler leakage detector

Special consideration shall be given to the selection of shaft generators in order to avoidunacceptable voltage drop during star-delta start of the thruster motors.

087193 ut 733-3 g6 r0

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