Oil Tanker Construction

Cargo equipments

• Vent pipes shall be fitted with flame arresters and shall be led to the open deck in a safe position.
• Steam lines for steaming out cargo tanks and cargo lines are to be fitted with screw-down non-return valves.

Bilge pumping of cargo pump rooms and cofferdams in the cargo area

• Bilge pumping equipment is to be located in the cargo area to serve the cargo pump rooms and cofferdams.
• A cargo pump may also be used as a bilge pump.
• On oil tankers used exclusively for the carriage of flammable liquids with flash points above 60 °C, cargo pump rooms and cofferdams may be connected to the engine room bilge system.
• Where a cargo pump is used as bilge pump, measures are to be taken, e.g. by fitting screw-down non-return valves, to ensure that cargo cannot enter the bilge system.
• Where the bilge line can be pressurised from the cargo system, an additional non-return valve is to be fitted.