087193 ut 733-3 g7 r0

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Rolls-Royce Marine AS Ship Technology Offshore - Ulsteinvik

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

Enterprise number NO 980 371 379

MAIN GROUP 7

SYSTEM FOR ENGINE COMPONENTS

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MAIN GROUP 7 ........................................................................................................................................................... 1

SYSTEM FOR ENGINE COMPONENTS................................................................................................................. 1 MAIN GROUP 7 - SYSTEM FOR MAIN ENGINE COMPONENTS........................................................................... 4

Pipeline systems - general.........................................................................................................................................................4 Material (Piping and valves) .....................................................................................................................................................4 Workmanship............................................................................................................................................................................5 Valves .......................................................................................................................................................................................6 Pumps........................................................................................................................................................................................6

70 FUEL OIL SYSTEM ............................................................................................................................................. 7 General......................................................................................................................................................................................7 Tanks.........................................................................................................................................................................................7

701 Fuel Oil Drain- and Transfer System .......................................................................................................... 7 702 Fuel Oil Separation Plant ............................................................................................................................ 8 703 Fuel Oil Consumer System........................................................................................................................... 8

Main engines.............................................................................................................................................................................8 Aux. engine...............................................................................................................................................................................8 Emergency generator engine.....................................................................................................................................................8

71 LUB. OIL SYSTEM .............................................................................................................................................. 9 711 Lub. Oil Transfer and Drain Systems .......................................................................................................... 9

General......................................................................................................................................................................................9 Hull integrated storage tanks.....................................................................................................................................................9 Transfer systems .......................................................................................................................................................................9 Fixed free standing stores tanks .............................................................................................................................................. 10 Sludge tank ............................................................................................................................................................................. 10

712 Lub oil purification plant ........................................................................................................................... 10 713 Lub. Oil System for Propulsion Machinery and Transmissions................................................................. 10

Main engines........................................................................................................................................................................... 10 Main gears............................................................................................................................................................................... 11 Stern tubes and stern tube tanks .............................................................................................................................................. 11

714 Lub.Oil System - Auxiliary Engine............................................................................................................. 11 72 COOLING SYSTEMS ........................................................................................................................................ 12

General:................................................................................................................................................................................... 12 721 Seawater (SW) Cooling system .................................................................................................................. 12

Sea inlets: ................................................................................................................................................................................ 12 Sea water cooling system for Main engines – System 1 and 2................................................................................................ 13 Sea water cooling system for other systems............................................................................................................................ 14

722 Fresh water cooling system........................................................................................................................ 14 Freshwater cooling system for Main engines - System. 1 and 2 ............................................................................................. 14 Fresh water cooling systems for Auxiliary engines ................................................................................................................ 15 Main gear – Freshwater cooling system.................................................................................................................................. 15 Shaft generators – Freshwater cooling systems....................................................................................................................... 15 Bulk handling compressors – Freshwater cooling systems ..................................................................................................... 15 FiFi gear boxes – Freshwater cooling systems........................................................................................................................ 16 Tunnel thrusters’ Electric motors – Freshwater cooling systems............................................................................................ 16

73 COMPRESSED AIR SYSTEMS......................................................................................................................... 17 731 Starting Air System and Control air System .............................................................................................. 17 732 Working Air System in Engine Room, etc. ................................................................................................. 17 733 Working Air System for Deck etc. .............................................................................................................. 18 734 Control Air ................................................................................................................................................. 18

74 EXHAUST SYSTEMS........................................................................................................................................ 19 742 Exhaust Pipe and Silencer ......................................................................................................................... 19

Silencers.................................................................................................................................................................................. 19

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Insulation ................................................................................................................................................................................ 19 Drain ....................................................................................................................................................................................... 19

743 Exhaust System for Propulsion Machinery ................................................................................................ 19 744 Exhaust System for the Auxiliary Engine ................................................................................................... 19

79 AUTOMATION SYSTEM FOR THE MACHINERY PLANT.......................................................................... 20 791 Manoeuvre Desks, Main Console, Instruments.......................................................................................... 20 792 Alarm/Monitoring System .......................................................................................................................... 22

General.................................................................................................................................................................................... 22 Alarm / Monitoring ................................................................................................................................................................. 22 Testing of alarm and monitoring system................................................................................................................................. 23

793 Remote control of propellers...................................................................................................................... 23 Operation mode Combinator:.................................................................................................................................................. 23 Operation mode Constant (fixed) RPM: ................................................................................................................................. 23 Failure ..................................................................................................................................................................................... 24 Emergency Machinery Telegraph ........................................................................................................................................... 24 Automatic overload protection of main engines: .................................................................................................................... 24

795 Safety Systems ............................................................................................................................................ 25 Main Engine Safety System.................................................................................................................................................... 25 Aux. Engine Safety System .................................................................................................................................................... 25 Steering Gear Alarm System................................................................................................................................................... 26 Hospital / Cold store Alarm System........................................................................................................................................ 26

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MAIN GROUP 7 - SYSTEM FOR MAIN ENGINE COMPONENTS Pipeline systems - general All pipelines to be as per good marine standard, according to system drawings approved by the Owners and to the satisfaction of equipment suppliers involved as required. Classification Society's and National Authority's approvals to be obtained on systems where required. Pipes to be delivered with certificates to the extent required by the Classification Societies. The pipe layout shall, as far as practical, permit unobstructed access along walkways, and access for operation, maintenance and inspection of equipment and components. The pipe routing shall also ensure free access to all doors, manholes and floor plates as far as practically. Mud boxes, strainers, valves, etc. are in general to be arranged as required for systems operation safety and according to Class requirements. One non-return valve shall be fitted on discharge side of all pumps to avoid unintended reverse flow. Bell mouth to be provided at each suction head in tanks as required. Foundations for L.O. and F.O. pumps, separator(-s), plate type heat exchangers, filters, etc. where waist oil can occur to be equipped with waste tray with drain pipe to the dirty oil tank in double bottom via a common header. The header drop line to the tank to be fitted with a manual shut off valve. Marking of pipelines, valves, fittings, etc., ref. item 448. Material (Piping and valves) Material and size of piping system, including valves and cocks, strainers, etc. to be of International Standards. The pipelines, pumps and valves shall be according to Appendix 1 “Pipes, Pumps & Fitting Standard”. Steel pipes shall be generally galvanized, except as mentioned against individual systems. However, pipes running through oil tanks shall not to be galvanized. The materials to be used in piping systems are to be suitable for the medium and service for which the system is intended. Components applied in the systems are to be constructed in materials compatible with piping material and system fluids. Suitable Ermeto type couplings shall be provided for small bore (below 25 mm) high pressure piping except compressed air system, which shall be provided with flanges.

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Pipes above ND40 in general to be flanged, for pipes below ND40 flanges or welding sleeves to be used according to agreement between Owner and Yard. Couplings may be applied over all where the Class permits. For air pipes welded connections may be applied. Sounding pipes with self-closing sounding valves to have 1 1/2" tread connection. Workmanship Piping to be led straight as far as practicable with a minimum number of bends and with an adequate number of flange joints for access and removal. Consideration also to be given in design to system flow resistance with regard to pipe bore, pipe arrangement, workmanship, pump characteristics, etc. Saddles to be used for “T” & “X” joints. The pipelines to be equipped with expansion joints or to be laid with expansion bends where necessary to avoid damage due to expansion or movement of the structure. Where fuel oil pipe and lub oil pipe are laid on hot areas, screens to be arranged. Pipe lines to be provided with drainage and/or ventilation facilities as appropriate. All pipes to be well clamped to the ship’ structure. For steel pipes flat steel clamps or U-type steel bolts to be provided, pipes shall be adequately clamped/supported to prevent vibrations and allow for expansion.. For galvanized steel pipes galvanized flat steel clamps or similar to be applied. For copper pipes flat steel clamps with neoprene or lead lining to be provided. Clamps normally to be welded, but bolted if this is more practical. Bolts on clamps inside tanks to be provided with self-locking nuts. Hot dip galvanised pipes to be hot dip galvanized after completed welding and treatment. In general welding on hot dip galvanized pipes to be avoided. Welded seams on pre-galvanised pipes to be sprayed by zink spray or similar. Minor damages during installation & welding on board, shall be touched up with zinc paint. Where piping penetrates into the watertight or oil tight bulkheads or decks, the connection to be made tight by means of three-flanged piece, sleeve joint or direct welded pipe as per shipbuilding practice. Lub oil pipes, fuel oil pipes, hydraulic pipes and pressure air pipes to be cleaned thoroughly. Lub oil- and Hydraulic pipe system testing and cleaning procedures to be according to the standards required by supplier of hydraulic machinery. Sufficient drain shall be arranged for the high pressure air system pipelines. All pumps to be fitted with gauges on both pressure and suction side of pumps. Inlet/outlets of coolers to be fitted with thermometers.

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Inlet/outlets on FW side of heat exchangers to be fitted with manometers. Valves Valves to be of class approved type as required. Consideration to be given to system’s flow resistance when valves are selected. Butterfly valves of good quality to be applied where this is considered practical. Ref. also Appendix 1 “Pipes, Pumps & Fitting Standard”. The valves fitted to hull shall be duly approved by classification society. Pumps Ref. Appendix 1 “Pipes, Pumps & Fitting Standard”.

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70 FUEL OIL SYSTEM General The ship to be arranged with fuel oil system based upon engines operating on gas oil. (According to ISO 8217) and HF HSD fuel Main engines’ fuel oil system to be divided into two independent systems and to have fuel supply from either of the service/settling tanks described below. Tanks One (1) Service tanks and one (1) combined Settling-/Service tank for gas oil and HF HSD fuel oil to be arranged in accordance with Class requirements. Service tanks to have manual filling from bunker tanks via the transfer pumps, ref. item 701. The tanks to be equipped with high/low level alarms, waste tray with drain, overflow and oil level gauge to fulfil Class requirements. Remote quick closing arrangements for fuel valves, emergency shut down for fuel pumps, etc. shall be provided as required by SOLAS regulations. The valves shall be closable from weather deck. Fuel oil storage tanks to be arranged according to Tank plan. Fuel oil bunker stations, ref. item 351. One (1) Overflow / Drain tank to be arranged according to Tank plan. The tank to have overflow from all fuel oil bunker tanks and from service / settling tanks. Ref. also item 821. The tank to be equipped with sounding and level alarms.

701 Fuel Oil Drain- and Transfer System Fuel oil transfer pumps to be installed as follows: SFI comp. id

Description of pump

No Cap. each approx. [m3/h]

Press [mwc]

Type Drive motor

701-106 Fuel oil transfer 2 10 20 El. driven The pumps shall be directly coupled to a 3 Phase, 50 Hz, 400 V motor complete with locally mounted starter. The pump and motor shall be mounted on a combined base plate. The pumps shall have remote stop outside engine room. The transfer pumps shall have built-on safety valve.

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The transfer pumps to be backup for each other. The pumps to have suction from storage tanks and with supply to the service/settling tanks. The fuel oil transfer pumps shall also take suction from and deliver to any of the bunker tank. Waste trays of F.O pumps and purifiers shall be drained to sludge tank.

702 Fuel Oil Separation Plant The vessel is to be equipped with separator for gas oil / HF HSD fuel oil as follows: SFI comp. id

Description of component

No Capacity Type Suction from Clean oil delivery to

702-105 Fuel oil separator 1 5000 l/hr Manual cleaning

Bunkers, Service, Settling, Drain /overflow tks

Service tks.

The separator shall be provided with liquid seal breakage alarm device. F.O. separator pump shall be connected to F.O suction valve chest from various bunker tanks, drain tank, service and settling tanks. Separator pump shall be arranged to deliver F.O to service and settling tanks. Waste discharge to sludge tank.

703 Fuel Oil Consumer System Main engines The manufacturer’s standard filter equipment, by duplex filter, to be installed on the main engine. FO heat exchanger shall be installed according to engine manufacturer’s requirements. Aux. engine Aux. engine to have built-on fuel oil pump. Standard filter equipment to be installed in aux. engine supply lines according to Class. The fuel oil system to be designed according to engine manufacturer’s recommendation. Emergency generator engine The emergency generator set to be located in a separate room and to have separate service tank for Gas oil / HF HSD fuel oil with capacity according to rules. Filling facilities to be arranged from fuel oil purifier discharge.

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71 LUB. OIL SYSTEM

711 Lub. Oil Transfer and Drain Systems General Transfer systems shall be provided for filling and emptying the engines, main gearboxes, thruster, hydraulic system, etc. The systems shall be segregated to avoid any mixing of different oils. SFI comp. id

Description of pump No Cap. approx. [m3/h]

Press [bar]

Type Drive motor

711-101 Lub oil transfer for tunnel thrusters

1 3 2 Gear El. driven

Hull integrated storage tanks Hull integrated lub oil storage tanks for major equipment to be arranged. The tanks to be arranged for following purposes:

• One (1) LO storage tank for Main engines • One (1) LO storage tank for Auxiliary engines • One (1) LO storage tank for Main gearboxes • One (1) LO storage tank for Tunnel thrusters

Each storage tank to have separate filling line from deck. The storage tanks shall be equipped with air pipes, sounding device, tapping cocks and waste tray. The waste tray shall be drained to sludge tank. Transfer systems Main engines’ LO systems to be filled by gravity via permanent installed piping systems from LO storage tank for main engines. Main engines’ LO systems to be emptied by gravity and ME priming pump via permanent installed piping systems to sludge tank. Auxiliary engines’ LO systems to be filled by gravity via non-permanent flexible hose from LO storage tank for auxiliary engines. Auxiliary engines’ LO systems to be emptied by gravity/separate hand pump via non-permanent flexible hose to sludge tank. Main reduction gears’ LO systems to be filled by gravity via permanent installed piping systems from LO storage tank for main gearboxes located above the gears. Main reduction gears’ LO systems to be emptied by the gears’ LO standby pump via permanent installed piping systems to sludge tank.

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Tunnel thrusters’ LO systems to be filled by a separate lub oil transfer pump (ref table above) via permanent installed piping systems from LO storage tanks for tunnel thrusters. Fixed free standing stores tanks The tanks to be installed and located adequate for following purposes:

• One (1) Min. 210 l stores tank for steering gear. • One (1) Min. 210 l stores tank for tugger winches. • One (1) Min. 210 l stores tank for windlass.

Sludge tank In double bottom engine room, one (1) sludge tank to be arranged with capacity according to Class requirements for drainage from separator(-s), for drainage from waste tray and emptying of engines and gear. Sludge handling system, ref. item 803.

712 Lub oil purification plant One (1) lub oil separator of capacity 2500 lit/hr shall be provided. The separator shall be provided liquid seal breakage alarm device. The separator to be of manual cleaning type with 60 kW electric pre-heater and separate electric driven supply pump. Purifier to be piped separately to each engine with manual crossover function available. Purifier shall be supplied mounted on separate base plates that also form a waste tray with drain pipe and valve connected to the dirty oil tank.

713 Lub. Oil System for Propulsion Machinery and Transmissions Main engines Separate LO system for each main engine to be arranged. Engines to be of type with wet sump. Each main engine to have one (1) engine driven lubrication oil pump and one (1) separate electric driven priming/standby pump. The pumps shall have suction from sump and delivery to the engine. Lub. oil cooler to be freshwater cooled. Lub oil system to be thermostatically regulated. Engine manufacturer’s standard lub.oil filter equipment to be fitted. The main engines crank case to have ventilation leading to forecastle deck. The pipes shall have goose neck with wire-mesh for flame arresting.

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Main gears Each gear to be equipped with a built-on oil system. Stern tubes and stern tube tanks For the stern tube a pressurized level tank to be arranged which provides a static pressure for the stern tube. The tanks to be located above the deep loading line and be prepared for an air pressure of 0,2 – 0,3 bar depending on maker’s calculations. Level switch shall be provided on stern tube header tank as per rule requirement to give low-level alarm. The discharge valve on the tank shall be locked in open position. The stern tube to be arranged with drain and the drain valve shall be locked in closed position. Drain plug shall be provided for stern tube. One (1) min. 400 litres storage tank to be installed.

714 Lub.Oil System - Auxiliary Engine

Auxiliary engine to have lub.oil system built on.

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72 COOLING SYSTEMS

General: Each main propulsion plant shall be served by an independent thermostatically regulated FW cooling system. SW/FW heat exchanger shall be dimensioned to give sufficient cooling for connected equipment running at maximum continuous load, with a S.W. inlet temperature of up to 32°C. Velocity in Seawater pipes generally not exceed 2.5 m/s. Velocity in Freshwater pipes shall generally not exceed 3.5 m/s. 15% fouling to be included in design calculations for sea water heat exchangers. The systems shall in general serve as follows: System no. 1: PS propulsion plant, comprising: Main engine and misc equipment like; main gear, shaft generator, aux. engine, bulk handling compressor(s), Fi-Fi gearbox, and stern thruster motor.

System no. 2: SB propulsion plant, comprising: Main engine and misc equipments like; main gear, shaft generator, aux. engine, Fi-Fi gearbox, and bow thrusters motors. Alternatively; the two auxiliary engines can be arranged with self-contained SW and FW cooling systems built-on the engines, as per manufacturer’s standard.

721 Seawater (SW) Cooling system SW for cooling purposes shall be provided as described below. Throttling Valves (saunders or similar) for flow regulating shall be fitted for all circuits.

Sea inlets: Two sea inlets to be arranged in engine room area, one low suction and one high suction. The suction pipes shall penetrate into sea chests in order to avoid air suction. After each inlet valve a M.S. galvanized strainer (fabricated type) shall be installed. The chests to be arranged with connections for vent pipe and compressed air. Strainer plates in inlet of the sea chests shall be of galvanized steel. Chemical dosing system for sea water system shall be arranged. Overboard valves shall be closable non-return valves.

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The sea inlets shall be connected to each other via a cross over main, which is to be built as an integral part of the double bottom. Main seawater cross over line from low to high suction to be arranged in the double bottom of the engine room and this section of double bottom to have increase wall thickness to 15mm. Access manholes to be provided for this area from both inside and outside of the hull to allow blasting and painting at dry-dock time. Seawater pumps and closing valve shall be mounted directly to the crossover section by threaded set–on flange with SUS studs welded directly to the deck. The trunk shall be of sufficient length to allow for easy installation of all pumps accordingly.

Sea water cooling system for Main engines – System 1 and 2 Two (2) off electric motor driven sea water pumps shall be installed. Each pumps to provide cooling water to one main SW/FW cooling system. The pumps to be arranged as back-up for each other. SFI comp. id

Description of pump No Cap [m3/h]

Press[bar]

Type Drive motor

721-101 Seawater cooling ME 2 * ** Centrifugal 1-speel el.driven

* = Pump capacity to be according to final heat transmission calculations. ** = Delivery pressure to be according to final pressure drop evaluations. Each pump shall be dimensioned for max. load of one main engine and the connected equipment. Each pump should cover for cooling water requirement for both main SW/FW cooling system at times during low load operation (less than 50% of full load). The SW pumps shall be supplied with automatic air ejector. 50 mm stub pipes with blanks are to be fitted to the saltwater inlet and outlets of both coolers, for acid cleaning. Stub pipes to be fitted with SS ball valves.

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Sea water cooling system for other systems Sea water pumps shall be arranged for the supply of cooling water to air condition- and provision refrigeration condensers. SFI comp. id


Press[bar]

Type Drive motor

721-110 Seawater cooling A/C- and provision refrigeration condensers

2 * ** Centrifugal 1-speel el.driven

Pumps to be arranged as back-up for each other.

722 Fresh water cooling system Freshwater cooling system for Main engines - System. 1 and 2 One (1) off central cooler to be installed in each system. The SW/FW coolers to be of plate type with port strainers/filter, clip on seals, and with plates of Titanium material. One seawater strainer to be fitted at the water inlet of each heat exchanger. This is in addition to the common seawater filters at the sea chests. Each system shall consist of a common low temperature (LT) circuit and with integrated high temperature (HT) circuits for main engine. The cooling circuits to be thermostatically regulated, thermostatic valves to be of fixed setting (wax) type. The low temperature circuits shall be based on a temperature of 37ºC after thermostat valve / FW coolers. One expansion tank of adequate capacity shall be provided for each of the main engine fresh water cooling system and installed suitably. SFI comp. id


Press[bar]

Type Drive motor

LT freshwater cooling main engine. See note 1 below.

2 Centrifugal 1 pump built-on each main engine

HT freshwater cooling main engine. See note 1 below.

2 Centrifugal 1 pump built-on each main engine

722-103 LT freshwater cooling misc equipment. See note 2

2 * ** Centrifugal El. Driven, 1 speed

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SFI comp. id


Press[bar]

Type Drive motor

722-104 LT freshwater cooling back-up misc equipment. See note 2

1 * ** Centrifugal El. Driven, 1 speed

* = Pump capacity to be according to final heat transmission calculations. ** = Delivery pressure to be according to final pressure drop evaluations. Note 1: Spare HT- and LT-pumps to be provided and stored onboard, ready for installation if one of the main engines’ built-on cooling pumps is out of order. The pumps to be clearly marked port / starboard for correct rotation direction. Note 2: Misc equipment like; main gears, shaft generators, bulk handling compressor(s), Fi-Fi gearboxes and thruster motors, ref also item 72. Electric preheating shall be provided for Main engine jacket water. Fresh water cooling systems for Auxiliary engines The aux. engines to have freshwater cooling system completely built-on (pump, cooler, thermostatic valve, exp. tank as per engine maker's design and standard), and to be connected to one of the central cooling circuits. The temperature of fresh water shall be thermostatically controlled. Alternatively; the auxiliary engines can be arranged with self-contained SW and FW cooling systems built-on the engines, as per manufacturer’s standard. A standby connection from GS pumps shall be provided for both aux engines. Main gear – Freshwater cooling system Lub oil- and servo system for main gear to be cooled by means of corresponding main engine low temperature cooling circuits via LT FW cooling pumps for misc equipment. Shaft generators – Freshwater cooling systems Shaft generators to be cooled by means of corresponding main engine low temperature cooling circuits via LT FW cooling pumps for misc equipment. Bulk handling compressors – Freshwater cooling systems Bulk handling compressors to be cooled by means of one of the main engine low temperature cooling circuits via LT FW cooling pumps for misc equipment.

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FiFi gear boxes – Freshwater cooling systems FiFi gear boxes to be cooled by means of corresponding main engine low temperature cooling circuits via LT FW cooling pumps for misc equipment. Tunnel thrusters’ Electric motors – Freshwater cooling systems Tunnel thrusters’ Electric motors to be cooled by means of corresponding main engine low temperature cooling circuits via LT FW cooling pumps for misc equipment.

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73 COMPRESSED AIR SYSTEMS Following main components to be installed in compressed air system: SFI comp. id

Description of component

No Cap. each approx.

Press[bar]

Type Comment

731-101 Start air compressor 2 47 m3/h 30 Piston Air cooled 731-102 Emergency

compressor 1 5 m3/h 30 Air cooled, diesel

driven, hand started

731-112 Starting air bottles – main engines

2 * (min 250 l)

30

731-113 Starting air bottle – auxiliary engines

1 *

733-110 Working air bottle 1 0.75 m3 8 Vertical 734-117 Dryer for control

air 1 1.25

m3/min Refrigerated

dryer * = Capacity according to Class requirement. Start air compressors: • Alarms for high air temperature and low lub oil pressure shall be provided. • Automatic start and stop control regulation shall be provided. • Water separator shall be provided on the compressor outlet. Water trap and auto

arrangement shall be provided. • The compressors shall be equipped with inlet filter with silencer

The capacity of each main compressor shall be sufficient to deliver control air, air for tyfon, and consumption of working air in addition to normal starting air for the main engines. Air bottles for air pressure of 30 bar with capacities according to M.E and D.G set manufacturers' standards and Classification society recommendations shall be provided, with good access for cleaning and maintenance.

731 Starting Air System and Control air System Air pressure of 30 bar to be applied as starting air for the main engines and aux. engines.

732 Working Air System in Engine Room, etc. The working air bottle to be charged from starting air system via pressure reduction.

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Following outlets for working air to be arranged: No. Compartment/Area 1 Engine room 1 Forecastle deck 1 Bow thruster room 1 Steering gear/Stern thruster room 1 Engine workshop 1 Cargo deck area aft 1 Cargo deck area forward

All working air outlets to consist of closing valve and a quick coupling of snap type.

733 Working Air System for Deck etc. See 732 for number of outlets to be arranged. Location to be agreed upon with the Owner.

734 Control Air Control air to be supplied from starting air system by means of reduction valves 30 - 7 bar. Control airlines shall be provided with dehumidifiers, ref. equipment table above.

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74 EXHAUST SYSTEMS

742 Exhaust Pipe and Silencer All exhaust pipes to be laid to the top of the funnel, and directed outwards and aft. Penetration in funnel top plate to have collar to prevent ingress of rain water. The pipes to be resiliently suspended in such a way that no vibration is transmitted to the accommodation bulkheads and clamped in such a way they can freely expand. Expansion compensators to be fitted where necessary. Silencers In exhaust pipes, from main engines and auxiliary engine, spark arrestors / silencers with 35 dB (A) attenuation to be arranged. The exhaust pipes and the silencers to be resiliently suspended. Insulation The exhaust pipes to be properly insulated (as required by Class) with mineral wool. Insulation thickness to be 50 mm for the main engines and 40 mm for the auxiliary engine. The insulation to be covered with galvanized steel lining. Drain Drain from exhaust pipes at the lowest horizontal section to be arranged.

743 Exhaust System for Propulsion Machinery See 742.

744 Exhaust System for the Auxiliary Engine See 742.

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79 AUTOMATION SYSTEM FOR THE MACHINERY PLANT

791 Manoeuvre Desks, Main Console, Instruments

All consoles to be made of steel plates. The equipment shall generally be mounted in the top of the console. The consoles to have detachable covers in the front. Final layout / arrangement to be approved by Owner during detail design.

a) Engine control room consoles.

i) Engine room console to be installed in engine control. The following equipment to

be installed in the console: 2 Remote control panels for main propeller (SB & PS), including push buttons

for in/out for clutches 2 Engine panels incl. RPM meters, push buttons and lamps

All other necessary equipment for controlling the main engines, according to the main engine manufacturer's specification. Push buttons for starting and stopping of main engine's aux.- and stand by pumps. Switches for selecting manual / auto for stand by pumps. Indicating lamps for main engine's aux.- and stand by pumps running. Push buttons for starting and stopping engine room ventilation fans. Indicating lamps for ventilation fans running. PID controllers for cooling water systems, if installed. 1 Alarm panel steering gear 1 amplified telephone 1 slave panel for fire alarm plant 1 Push button for fire alarm

b) Bridge consoles.

i) Bridge console fwd. to be divided in one port and one stb console and shall include the following equipment: (All manoeuvring handles, revolution counters, rudder indicators and pitch indicators and all instruments to have interior light. All lights in the manoeuvring desk inclusive of the warning lights shall be provided with step less dimming.)

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An adequate number of switches for external lights, searchlights, compass light etc. 1 Intercom. telephone 1 Amplified telephone 1 Auxiliary Remote control panel for side thrusters 1 Echo sounder 1 Push button for fire alarm 1 Push button for general alarm 1 Auto pilot with gyro repeater and off-course alarm 1 Steering gear main control panel 1 Steering gear alarm panel 1 Docking point for portable Joystick panel 1 Auxiliary Remote control panel for C.P. propellers. 1 Auxiliary Remote panel for Main Engines incl. Emergency stop for each main

Engine, RPM meter for each main engine, etc. 2 Engine room telegraphs 1 Whistle controller with Main and Emergency Push buttons for whistle Radar to be installed near to or on console. In addition to consoles minor equipment to be mounted in overheads forward. This is equipment like: Window wiper panels Window flushing VHF station Light switches

ii) Bridge consoles aft to be divided in one port, one centre and one SB console and shall include the following equipment:

1 Main Remote control panel for C.P. propellers. 1 Main Remote panel for Main Engines incl. Emergency stop for each main Engine, RPM meter for each main engine etc. 1 Steering gear Auxiliary control panel 1 Amplified telephone PA system. Remote start/stop of the ships fire pumps Remote start/stop of the windlass hydr power pack. Emergency stops cargo pumps Emergency stop push buttons with cover, for emerg. stop as described under group 874. 1 Gyro repeater 1 Main Remote control panel for side thrusters

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1 Docking point for portable Joystick panel 1 Push button for fire alarm 1 Push button for general alarm 1 Main and Emergency Push buttons for whistle 1 Intercom. telephone Operator station for cargo control / alarm monitoring if fitted (Ref: Item 792) An adequate number of switches for external lights, searchlights, compass light etc. In addition to consoles minor equipment to be mounted in overheads aft. This is equipment like: Window wiper panels Window flushing VHF stations Light switches Wind measuring indicator

OPTION iii) Bridge consoles port / starboard wing.

Space for Docking point for portable Joystick panel (if fitted). OPTION ENDS.

792 Alarm/Monitoring System General One (1) monitoring/alarm system for machinery and equipment to be installed. The system shall be of approved type and have sufficient capacity to fulfil the class and main suppliers requirements. The acoustic signal shall have a loudness that can be heard in the engine room when the machinery is in service. System Structure/ Hardware The systen to be run on safe power supply. Failure of normal power supply shall give alarm. Operator stations/Alarm panels One (1) master alarm panel in ECR. Five (5) group alarm unit located as follows: Bridge fore and aft, messroom, chief and 2nd engineers cabin. Alarm / Monitoring The installed alarm system shall be able to indicate at the same time more than one fault, and the acceptance of any alarm shall not hinder another alarm. Alarms shall remain

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audible until they are accepted and the visual indicators shall remain until the fault has been corrected. Testing of alarm and monitoring system Equipment manufacturers and the shipyard should provide necessary test cocks and other additions to enable easy testing of monitoring equipment, alarms and shutdowns.

793 Remote control of propellers The vessel shall have Ulstein electronic-hydraulic remote control system for main engines and C.P. propellers. There will be 2 electrically totally independent plants, one port and one starboard. A failure in the port plant will not put the starboard plant out of operation and vice versa. Each plant to have two galvanic isolated power supplies. Each plant - port and starboard - consists of the following main components: 1 Main bridge panel, mounted in aft bridge console 1 Slave bridge panel, mounted in forward bridge console 1 Engine room panel, mounted in engine control room room console 1 Electronic cabinet, containing all electronic components Mounted in engine watch keeping room. 1 Hydraulic (servo) unit, mounted on each gear, including electromechanical actuator,

feed-back pot. meters, alarm sensors for the machinery alarm plant etc. Operation mode Combinator: When combinator operation is used, both the main engines RPM and the pitch will be increased / decreased accordingly, depending on the given order. By using the lever on the wheelhouse panel, or any other panel in command, an electronic signal will be given to the main engines governors and the electric mechanical actuator for pitch control.

Operation mode Constant (fixed) RPM: In modes of operation using shaft generator(s), fixed RPM on the corresponding main engines are required. By using the selecting fixed RPM mode on the engine room panel, the main engines will automatically be running at the pre-set RPM. In this condition, the control lever on the manoeuvre panel in command will control only the pitch, as the RPM is fixed.

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The pitch control will be as for combinatory operation. The only difference will be that RPM are now fixed. Failure If the electronics discover a system failure, the plant will automatically be switched over to emergency control. The system failure indicator lamp on the wheelhouse panels will be lighted together with the indicator lamp for emergency control. In addition, a signal will be given to the vessel's engine alarm plant. The pitch can then be controlled by the emergency control push buttons on the wheelhouse panel in command. Apart from the electromechanical actuator / serve valve, the emergency control is independent of the normal control, and have 24V DC power supply. Emergency Machinery Telegraph Engine telegraph for emergency manoeuvring shall be installed according to rules. If a serious emergency situation should set even the emergency control out of operation, the pitch can be manually controlled. The order from the wheelhouse will then be given by using the emergency machinery telegraph, and the pitch will be manually controlled by operating a lever on the reduction gearbox. The emergency machinery telegraphs - one port and one starboard - are independent of the vessel's ordinary remote control system. They shall be connected to 24V DC battery. There shall be one unit for each side in the forward bridge console, (the transmitter), one unit at each gear (the receiver) and one slave (indication) unit at each main engine. The receiver shall have acknowledgement push-button. The orders, given by operating a switch or push-buttons in the wheelhouse transmitter, shall be visually shown on the receiver by means of clearly marked indication lamps. An audible signal shall be given when a new command is transmitted. The orders shall be : Ahead full Ahead half Ahead slow Stop Astern slow Astern half Astern full

Automatic overload protection of main engines: To prevent overload, the main engines are protected by means of an engine load signal and RPM signal. If the signal exceeds the allowed value, the pitch will be reduced accordingly.

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The size of the reduction, and the speed of it, will depend on the overload. A heavy overload will lead to a fast and large pitch reduction. Then the pitch will be stabilised on a level where the engines are not overloaded. When using shaft generator, the corresponding main propeller's pitch will be reduced analogous to the shaft generator's load on the main engine, by means of the automatic overload protection system. When supplying side thrusters etc. from the shaft generator's which prime mover is also driving the main propeller and possible also the FiFi-pumps, a fixed pitch reduction will be introduced on the corresponding main propeller. This pitch reduction will be in steps according to the corresponding shaft generator's load. If higher load, the automatic overload system will come into function for a further pitch reduction. When operating in extreme hot conditions a fixed pitch reduction shall be introduced as per engine makers’ recommendation. See also 601.

795 Safety Systems

Main Engine Safety System A safety system for protection and control of each of the main engines shall be provided. The safety system shall control and protect the main engines in order to prevent faulty operation and/or major failure. The system shall automatic stop the engine upon critical failure which may lead to breakdown of the engines, so as too low lub.oil pressure, overspeed, in addition to any further requirements according to the Class. The safety panel cabinet shall be located in the engine room. Aux. Engine Safety System A safety system for protection and control of the aux. engines shall be provided. The safety system shall be similar to the safety system for the main engine. The safety system for the aux. engines may include alarm and monitoring of the engine as well. If so, the alarm shall be clearly indicated on the safety system panel / cabinet. In addition a common alarm for the aux. engines shall be given to the central alarm plant. Alarm: - Low lub oil pressure - High cooling water temperature Shut Downs: - Over speed - Very low lub oil pressure The safety panel / cabinet shall be located in the engine control room.

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Steering Gear Alarm System A separate alarm system for each steering gear to be provided according to Class requirements. Common alarm to be given to the central alarm plant. Hospital / Cold store Alarm System Bells or buzzers operated by push buttons in hospital at berth and cold stores shall be provided in galley or corridor and in Wheelhouse. Control / indication panel with reset in galley. Power supply from 24V DC.

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