The reading of a combustible gas indicator indicates the percentage of the
Direct Answer
Option D: lower explosive limit of a flammable gas concentration
A combustible gas indicator typically provides readings as a percentage of the Lower Explosive Limit (LEL), indicating how close the current gas concentration is to forming an explosive mixture.
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Detailed Explanation & Context
A combustible gas indicator typically provides readings as a percentage of the Lower Explosive Limit (LEL), indicating how close the current gas concentration is to forming an explosive mixture.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Oil Tanker Cargo Operations (TASCO).
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