Section 2 Piping Systems for Crude Oil Tanks

201. Inert gas systems for crude oil tank

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.

202. Crude oil 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 8, Ch 2, 104. 3 of Rules for the Classification of Steel Ships.