Section 2 Piping Systems for Cargo Tanks

201. Pressure Vessels and Liquid, Vapour and Pressure Piping Systems for Cargo Pressure vessels and liquid, vapour and pressure piping systems for cargo are to be in accordance

with Pt 7, Ch 5, Sec 5 of Rules for the Classification of Steel Ships.

202. Cargo tank perging and Inert gas system

1. On units equipped for storage of liquid hydrocarbons, a permanently installed inert gas system is to be provided for tank purging and inerting.

2. Inert gas systems are to be comply with Pt 8, Annex 8-5 of Rules for the Classification of Steel Ships.

203. Cargo tanks venting system

1. Where pressure/vacuum relief valves are fitted on crude oil tanks, pressure relief lines are to be connected to the low-pressure flare header, or vented to a safe location.

2. The crude oil tanks venting system is to be designed and constructed in accordance with Pt 7, Ch 5, Sec 8 of Rules for the Classification of Steel Ships.

204. Environmental Control of Cargo tanks and Piping Systems

Environmental control of cargo tanks and piping systems are to be in accordance with Pt 7, Ch 5, Sec 9 of Rules for the Classification of Steel Ships.