Which is the most accurate instrument for measuring the amount of oxygen in the atmosphere of a confined space?
Direct Answer
Option A: Oxygen indicator
An oxygen indicator is the most accurate device for measuring oxygen concentration in confined spaces, providing a direct percentage reading. Flame safety lamps are obsolete for this purpose, and combustible gas indicators are specifically designed for detecting flammable vapors, not oxygen levels.
All Options
Detailed Explanation & Context
An oxygen indicator is the most accurate device for measuring oxygen concentration in confined spaces, providing a direct percentage reading. Flame safety lamps are obsolete for this purpose, and combustible gas indicators are specifically designed for detecting flammable vapors, not oxygen levels.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Oil Tanker Cargo Operations (TASCO).
Practice Full TASCO Set 6
Test yourself with 30 interactive questions, live timer, and instant score.