1Tanker ShipsCommon Systems

An introductionMMA126

Tomas Olsson Neptun

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9Crude oil carrier

Crude oil carrier

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Max. fillinglimit = 98%

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Temperature measurement

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Tank washing

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1: 2: A picture collection of crude oil carriers.3: Deck view from a oil product carrier.4: Stena C-Max chemical carrier.5: A 8200 m3 carrier for Liqufied Petroleum Gas(LPG) and chemical gases.6: A 145'000 m3 LNG carrier (Liquefied Natural Gas)with spherical Moss Rosenberg tanks.7: A LNG carrier with membrane tanks ofGaz Transport- / Technigas system.8: A ordinary crude oil carrier with the systems common for all tanker ships.

See appendix9: The cargo tanks.

See appendix10: Construction of a common crude oil cargo tank.11: Inside a crude oil cargo tank during inspection.12: The arrangement of the loading part of a crude oil carrier.13: Center tank No. 1 on board the crude oil carrier M/T Saga Petro.14: Tank compartment plan on board the oil product carrier M/T Saga Raff.15: No. 1 port and starboard cargo tanks on the oil product carrier M/T Saga Raff.16: Tank compartment plan on board the chemical carrier M/T Saga Chemstar.17: No. 1 center cargo tanks on the chemical carrier M/T Saga Chemstar.18: Cargo tank overview of the LPGC Saga Ethylene.19: No. 1 port and starboard cargo tanks on the LPGC Saga Ethylene with associated sensors.20: Cargo tank overview of the LNGC Saga Moss with spherical Moss Rosenberg tanks.21: Cargo tank No. 1 on board the LNGC Saga Moss.22: Cargo tank overview of the LNGC Saga Frost with membrane tanks.23: Cargo tank No. 1 on board the LNGC Saga Frost.24: Ballast water system.

See appendix25: Pump room for cargo and ballast water with, for a crude oil carrier, steam driven pumps.

See appendix26: The arrangement for cargo pumps in the pump room.27: A cargo pump with associated equipment.28: The cargo pump arrangement on board the crude oil carrier M/T Saga Petro.29: A centrifugal deepwell pump for pruduct -, chemical - or LPG carrier.30: Steam production for pump turbines and cargo heating.

See appendix31: Steam boiler for the production of steam for cargo heating and as pump propellant which is common on crude oil carriers.32: For product and chemical carriers is hydraulic driven pumps most suitable.33: Inert gas production on a crude oil carrier.

See appendix34: Explosive limit diagram for common crude and oil products.35: M/T King Haakon VIIafter crude oil washing witout inerted tanks.36: Inert gas production with flue gas.37: Inert gas production with a special iner gas generator for chemical and LPG carriers.38: Overview of the inert gas system and associated systems on board the chemical carrier M/T Saga Chemstar.39: For chemical carriers and sometimes even for LPG carriers, depending of the kind of cargo, nitrogen is the most suitable.40: Schematic sketch of a nitrogen generator.41: The purity of on board produced nitrogen in relation to the air stream flow.42: The venting system with pressure/vacuum valves.

See appendix43: The center tank no.1 on board the crude oil carrier M/T Saga Petro with set points for the P/V-valves.44: The bottom lines for discharging of a crude oil carrier.

See appendix45: Suction bells attached to the bottom line.

See appendix46: The bottom valves in a tank on board the crude carrier M/T Saga Petro.47: The manifold arrangement.

See appendix48: Loading arms, "Chicksans", connected to an VLCCs manifold.49: A part of the manifold arrangement on board a chemical carrier.50: Drop lines for loading.

See appendix51: A schematic drawing of a manifold arrangement on board a crude oil carrier with four lines with two-valves segregation.52: Tank radar equipment for supervising the liquid level in each cargo tank.

See appendix53: Ullage plug for measuring the cargo level.

See appendix54: A common type of gas tight ullage plug for restricted gauging.55: The relation of ullage and innage.56: A common ullage taking apparatus of the conductivity type.57: The maximum filling limit in a cargo tank is 98% in liquid phase.58: Temperture measurement is very important for the determination of the cargo quantity.59: Heating coil to make cargoes with higher viscosity pumpable.

See appendix60: The trunk is the entrance to the tank.

See appendix61: The mast riser is connected to the venting system.

See appendix62: Each cargo tank on board a crude oil carrier have fixed crude oil washing guns (COW).

See appendix63: It is very important to have a non-flammable atmosphere in the cargo at all times, and especially during COW operations. 64: M/T King Haakon VIIwho don't have a non-explosive atmosphere in the cargo tank during a COW operation.65: A crude oil washing gun with the washing angles drawn.66: A common type of a crude oil washing gun.67: A common crude oil washing guns cleaning pattern.