Cargo oil tanks must be water washed, purged and gas freed prior to inspection. Cargo oil tanks must NEVER be entered when inerted. Prior to gas freeing any COT or gaseous space, the hydrocarbon content must be below 2% Hc, thus ensuring that the space
On a oil tanker the cargo oil tank atmosphere changes as per various operations the ship is performing. These includes the Key Cargo Operations such as: Discharging Tank Cleaning Purging Gas Freeing Inerting Loading When performing these key cargo operations safely, The most important