Marina Exam Reviewer: The best way to ensure whether adequate oxygen is present for safe entry into a seldomly used cargo tank is:

Marina Exam Reviewer

The best way to ensure whether adequate oxygen is present for safe entry into a seldomly used cargo tank is: 

A. Check for rust inside the tank 
B. Open the air vent prior to entry 
C. Test tank atmosphere using a combustible gas indicator 
D. Ventilate the tank with fresh air and test with an oxygen indicator 




Answer:     D. Ventilate the tank with fresh air and test with an oxygen indicator 

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