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Description: A hygrometer is a an easy to use tool for measuring the amount of humidity in the atmosphere and dew point temperature of a parcel of air. The most common type of hygrometer found on board ships is a dry and wet bulb type hygrometer. It comprises of a pair of basic thermometers fixed…
Combined pressure/vacuum valves are fitted to each cargo tank. These valves are designed to relieve positive or negative pressure in the tanks. Combined PV valves are fitted to each cargo oil and slop tank based on the vapor emission control system in accordance with USCG requirements. The purpose of the PV valve is to provide…
Description The exhaust gas boiler, which is located in the engine room at the upper deck level, is used to generate steam from the waste heat in the main engine exhaust gas. It can be operated separately or in connection with the oil fired auxiliary boilers. The steam generating tubes are of the pin tube…
The main cargo pump system consists of three vertical centrifugal single stage double suction type cargo pumps. They are situated at the bottom of the pump room and are driven by a single stage Curtis steam turbine and intermediate shaft passing into the pump room through a gas tight bulkhead gland. The pumps are each…
The steam generating plant consists of two oil fired auxiliary boilers and one exhaust gas economizer. In port the steam demand of the plant is served by the oil fired boilers. At sea, the steam demand is met by supplying boiler water to the exhaust gas economizer and utilizing the waste heat from the main…
Before starting the engine, the following checks and procedures are to be undertaken. All components that have been overhauled to be checked and wherever possible function tested. All equipment, tools and rags used during overhaul to be removed from the engine. Air Systems a) Drain any water present from the starting air system. b) Drain…
The Gauging system Most of the terminals these days demand that a closed gauging / sampling system be followed on all tankers at their terminals. This means that the tanker must be able to gauge or sample the cargo in her tanks manually or automatically without opening her cargo tanks to the atmosphere. In this…
Construction and Maintenance In any dock, all parts, whether fixed or moveable or every lifting machinery and every chain, ring, hook, shackle, swivel or pulley block used in hoisting or lowering shall be: Of good construction, sound material, adequate strength and free from defects; Properly maintained; and Thoroughly examined once at least every 12 months…