OCTCO/OCTF Exit Exam • Set 5 Question 20 of 30

The change in resistance of hot filament in tank scope is displayed as:

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Direct Answer

Option C: % Volume of hydrocarbon

The Tankscope (non-catalytic thermal conductivity gas meter) measures the concentration of hydrocarbon vapour in an inerted atmosphere over the range of 0 to 100% volume hydrocarbon.

All Options

% Volume of oxygen

% Volume of inert gas

% Volume of hydrocarbon (Correct Answer)

% LEL

Detailed Explanation & Context

The Tankscope (non-catalytic thermal conductivity gas meter) measures the concentration of hydrocarbon vapour in an inerted atmosphere over the range of 0 to 100% volume hydrocarbon.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).

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