Which statement about the pressure in a tank being inerted by an inert gas system is TRUE?
Direct Answer
Option B: A positive pressure should be maintained at all times.
ISGOTT (International Safety Guide for Oil Tankers and Terminals) mandates maintaining a positive pressure within inerted cargo tanks at all times. This prevents the ingress of atmospheric oxygen, which could create a flammable atmosphere, thereby ensuring the tank remains safe and non-explosive during all operations.
All Options
Detailed Explanation & Context
ISGOTT (International Safety Guide for Oil Tankers and Terminals) mandates maintaining a positive pressure within inerted cargo tanks at all times. This prevents the ingress of atmospheric oxygen, which could create a flammable atmosphere, thereby ensuring the tank remains safe and non-explosive during all operations.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).
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