USCG USCG Safety Eng
Set 6 • Question #166 of 254
Launch Interactive Practice Room Which of the following procedures is the generally accepted method of determining whether the atmosphere within a cargo tank is over rich, explosive, or too lean to support combustion?
A
Use the open flame test on a small sample that has been taken from the tank.
B
Send a gas sample ashore for laboratory analysis.
C
Enter the tank with a teledyne oxygen analyzer.
D
Use an explosimeter or combustible gas indicator.
✓ Correct Answer
USCG NMC Regulatory Explanation
Under MARPOL, SOLAS, and USCG Marine Engineering Safety regulations, regarding 'Which of the following procedures is the generally accepted method of determining whether the atmosphere within a cargo tank is over rich, explosive, or too lean to support combustion', the mandated standard is: 'Use an explosimeter or combustible gas indicator.'.
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