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Category: Shipboard operation

EMERGENCY INERTING  OF BALLAST TANKS

Posted on June 24, 2023June 24, 2023 By admin 2 Comments on EMERGENCY INERTING  OF BALLAST TANKS
EMERGENCY INERTING  OF BALLAST TANKS

Opposite each ballast tank there is a spur pipe off the 200mm IG line to the cargo tanks, which is fitted with a blank flange, this is to facilitate the emergency inerting of the ballast tanks. One flexible hose, 150mm in diameter and 30m long and two portable bends are provided for inerting via a…

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Shipboard operation

Emergency Fire Pump

Posted on June 21, 2023June 21, 2023 By admin No Comments on Emergency Fire Pump
Emergency Fire Pump

The emergency fire pump is located in the emergency fire pump space inside the steering gear flat. The pump is used to supply the fire main when the fire and GS pumps in the engine room are unable to do so and to supply the driving water for the foam system. It is an electrically…

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Engine Room Operations

GENERAL SERVICE AIR SYSTEM

Posted on June 21, 2023June 21, 2023 By admin No Comments on GENERAL SERVICE AIR SYSTEM
GENERAL SERVICE AIR SYSTEM

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…

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Engine Room Operations

STARTING AIR SYSTEM

Posted on June 20, 2023June 20, 2023 By admin No Comments on STARTING AIR SYSTEM
STARTING AIR SYSTEM

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…

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Engine Room Operations

STEERING GEAR

Posted on June 18, 2023June 18, 2023 By admin No Comments on STEERING GEAR
STEERING GEAR

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…

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Engine Room Operations

DOMESTIC  FRESH WATER SYSTEM

Posted on June 17, 2023June 17, 2023 By admin No Comments on DOMESTIC  FRESH WATER SYSTEM
DOMESTIC  FRESH WATER SYSTEM

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…

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Engine Room Operations

DECK FOAM FIRE EXTINGUISHING SYSTEM

Posted on June 8, 2023June 8, 2023 By admin No Comments on DECK FOAM FIRE EXTINGUISHING SYSTEM
DECK FOAM FIRE EXTINGUISHING SYSTEM

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…

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Shipboard operation

DOMESTIC  REFRIGERATION SYSTEM

Posted on June 8, 2023June 8, 2023 By admin No Comments on DOMESTIC  REFRIGERATION SYSTEM
DOMESTIC  REFRIGERATION SYSTEM

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…

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Engine Room Operations

ACCOMMODATION AIR CONDITIONING PLANT

Posted on June 7, 2023June 7, 2023 By admin No Comments on ACCOMMODATION AIR CONDITIONING PLANT
ACCOMMODATION AIR CONDITIONING PLANT

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…

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Engine Room Operations

SEWAGE TREATMENT

Posted on June 6, 2023June 6, 2023 By admin No Comments on SEWAGE TREATMENT
SEWAGE TREATMENT

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…

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Engine Room Operations

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Blog is primarily for candidates appearing for certificate of competency exams but such is the detail that while being equally suitable for the beginner, it is also reference work for experienced seaman, and the layout and style of blog make it suitable for shipboard training where practical experience can be allied to the theoretical approach.

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