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The general service air system is supplied by one electric motor driven air compressor operating at a pressure of 6.9MPa. The compressor discharges to a 3.0m3 air receiver and is controlled by the pressure in the receiver with the machine loading and unloading as required. The compressor is fitted inside an acoustic casing that is…
The starting air system is supplied by two main starting air compressors that supply two 5.0m3 starting air receivers. The compressors are of the two stage reciprocating type and are cooled by fresh water from the fresh water cooling system. A three-way temperature controlled valve is used to regulate the flow of water to the…
The steering gear consists of two rams and four cylinders that are driven by two electrically driven pumps. The pumps are of the variable displacement axial piston type of swashplate design for closed circuit transmissions and are contained in separate oil tanks. The steering gear is capable of operating as two totally isolated steering systems…
Fresh water for domestic use is stored in the fresh water tank located in the steering gear room. Drinking water is supplied by a separate system and the drinking water is stored in the drinking water tank also located in the steering gear room. Fresh water and drinking water is pumped to the tanks from…
The foam system supplies foam to eight monitors at various points on upper deck. The liquid foam making chemical is stored in a 3.7m3 tank located inside the hydraulic pump unit, foam tank room and fire control station in side accommodation on the upper deck. The foam is made by discharging a portion of the…
Cooling for the meat/fish, vegetable and dairy rooms is provided by a direct expansion R-404a refrigeration system. The plant is automatic and consists of two compressors, two condensers and an evaporator coil in each of the three cold and cool rooms; the lobby is cooled by the refrigerant return coil from the vegetable room. During…
The air conditioning system is designed to cool air if required, provide heating to the air when needed and humidify the air to the correct level for comfort. A by product of air conditioning is the lowering of the air’s dew point and precipitation of moisture out of the air and making it dryer. A…
The sewage treatment plant treats all sewage in a three tank unit using activated sludge and extended aeration. Sewage Treatment Plant The sewage treatment plant consists of three separate tanks through which the sewage passes and during that passage through the tanks bacteria effectively breaks down the raw sewage so that the discharge into…
The incinerator consists of a combustion chamber with burner unit, sludge burning equipment and electric control panel all assembled in one complete unit. The incinerator can burn solid garbage waste, engine room waste oil and diesel oil to assist the total combustion when required. The unit is capable of burning approx 58-70 kg of waste…
A single bilge eductor, driven by sea water from the fire/wash deck line, is provided for the drainage of the bosun’s store and chain locker bilges. Each suction point is equipped with a non-return suction valve. Procedure for Discharging Bilge Water from the Chain Locker and Bosun’s Store The chain lockers and the bosun’s store…