ENGINE COOLING WATER SYSTEM

Piping systems IntroductionThe piping used on a ship for circulating, loading, and discharging liquids, steam, and gases. A ships piping systems are responsible for providing shipboard drainage, ballast, fire protection, tap water supply, sewage disposal, heat and steam supply, ventilation and air conditioning, refrigeration, and compressed air.Types of piping system.Engine cooling water system.Exhaust piping system.Fuel SystemLube Oil Transfer SystemDeck and Sanitary Drain PipingFire SystemBilge SystemOily-water SeparatorDeck and Sanitary Drain Piping.Ballast SystemHydraulic SystemHalon SystemTank Level Indicating System

ENGINE COOLING WATER SYSTEMFresh Water Circulating System is installed to cool the propulsion diesel engines, anchor winch diesel engine, and the generator diesel engines.The main engine is cooled by two separate systems open system And closed system. Many engine room systems also use sea water to cool oil, condense steam and even produce drinking water.Seawater Cooling System

Freshwater Cooler (Plate-type)

Freshwater Header Tank

EXHAUST PIPING SYSTEMS In the Forward Engine Room, the exhaust from both manifolds of the main propulsion engine feeds a muffler. The output of the muffler is ducted to the aft exhaust on the forward exhaust stack on the starboard side. The exhaust from the generator engine feeds a small muffler. The output of the muffler is ducted to the forward exhaust stack on the starboard side

Fuel SystemThe Fuel System supplies diesel fuel from the two storage tanks to the main propulsion engines, anchor winch engine, and diesel generator engines. The supply line is fitted with a fuel filter/water separator to remove water from the diesel fuel.Fuel return lines are fitted with check valves, and lead from each engine to the fuel storage tanks

Lube Oil Transfer SystemThe Lube Oil Transfer System consists of a lube oil storage tank, manually operated transfer pump, distribution lines and supply valves and service hoses. Supply valves and service hoses are provided in the distribution lines in both engine rooms and the anchor winch compartment. They service the main diesel engines, diesel generator set and anchor winch diesel engine. The tank is fitted with a fill, vent, drain and level gage and is located in the forward engine room starboard. The tank fill pipe is located inboard of the deckhouse on the main deck.

Lubricating Oil Pump

Lubricating Oil Filter Self-cleaning

Deck and Sanitary Drain PipingThe Drainage System serves deck drains, galley sink, lavatories, shower, and clothes washer. Water drains toward the overboard discharge starboard. All drains work by gravity. Gagged scuppers are fitted at the overboard discharge. There are traps in the drains for the lavatories, galley sink and washer. Drains for the lavatories, washer and galley sink are vented, ending inboard of the deckhouse.

Fire SystemPiping is used extensively throughout a ship for fire control purposes. The specific features of ships firefighting equipment are governed by the International Convention for the Safety of Life at Sea (SOLAS).Fire MainSeawater as fire extinguishing mediumAt least two fire pumps and are located in two different compartmentsAn international shore connection is provided at port and starboard for external water supplyPressure relief valve is fitted to mains to protect sudden over-pressureCarbon Dioxide systemDry fire protectionUsed in compartments that have potential for fire: engine room, emergency generator room, paint locker and galley hoodSystem is equipped with audio and visual alarm to alert personnel to evacuatePrior to CO2 release, ventilation fans and fire damper to be shutSprinkle systemWet fire protection mainly for accommodation areaSystem is filled with fresh water and pressurized by compressed airSubsequently, water is supplied from fire mainSprinkle and fire main systems are separated by an alarm check valve.

Bilge SystemThe Bilge System consists of the bilge pump, box strainers, valves and piping serving the main machinery spaces. The bilge pump is driven by a belt drive on the port propulsion engine. All water is removed from the bilge and fed into the oil/water separator system. Hose valves are installed in each engine room.

Bilge SystemBilge pump capacity, Q

Two bilge pumps are requiredSuctions are arranged such that water can be pumped out when ship is inclined 5.

(m3/h)

Oily-water SeparatorAn oily water separator (OWS) is a piece of shipboard equipment that allows a vessel's crew to separate oil from bilge water before the bilge water is discharged overboard.

Diesel Fuel Separation System

VENTILATING AND AIR CONDITIONING SYSTEMThe Air Conditioning System consists of a single air conditioning plant and suitable duct work serving the crew berthing, stateroom, pilot house, galley and mess.The air conditioning plant consists of a condensing unit assembly, a heat exchanger, an air conditioning cooling coil (evaporator) .

Ballast SystemThe Ballast System consists of piping and valves serving the aft ballast tank, the forward port and starboard ballast tanks, and the peak ballast tank. When the ballast tanks are being filled, the same piping system is used with sea water flowing in the opposite direction. Tank level indicators for the ballast tanks are located on the aft bulkhead, in the aft engine room, beside the fire pump controller. The forward port and starboard ballast tanks and peak ballast tank valves can be operated remotely by the hand wheels located in the crew berthing.

Hydraulic SystemHydraulic pipes are high-pressure pipes. These are used for: maneuvering the steering gear actuating controllable pitch propellers and thrusters lifting appliances and deck equipment moving mobile ramps for hatch covers driving cargo and ballast pumps

Halon SystemThe fixed Halon Fire Extinguishing System is located in the forward and aft engine rooms and the flammable liquid storeroom. Modes of operation are automatic, manual, and remote manual.If a fire occurs in the flammable liquids storeroom, the Halon Extinguisher will activate whether in the automatic, manual, or remote manual mode. There is no electrical tie-in with the fire alarm panel in the pilothouse or the engine rooms

Tank Level Indicating SystemThe Tank Level Indicating System provides a way of determining the level of fluids stored in shipboard fluid tanks. The fluid level is indicated on meters contained in system components found throughout the ship.If the fluid level falls below or rises above these values, audible and visual signal alarm indicators can be found at system components

conclusionPiping system is the important aspect in a ship. A ships piping systems are responsible for providing shipboard drainage, ballast, fire protection, tap water supply, sewage disposal, heat and steam supply, ventilation and air conditioning, refrigeration, and compressed air.

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