Tankerman · Safety — Enclosed Space
Before entering a cargo tank that has been inerted, the atmosphere must be:
- AEntered with a self-igniting flare
- BGas-freed (ventilated with air) and tested for oxygen and toxic/flammable gas✓ Correct
- CLeft inerted, since inert gas is breathable
- DPressurized with inert gas
Explanation
An inert atmosphere is NOT breathable (low oxygen). The tank must be gas-freed with air and tested (oxygen ~20.9%, hydrocarbons below limit, toxics safe) before entry, with permit, standby, and rescue gear.
Authority: SOLAS Chapter II-2; IMO Res. A.1050(27); ISGOTT
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