Question 62Safety & Environmental - 1st Asst/Chief70% to pass
The atmosphere of an empty fuel tank is tested and designated "gas free". Which of the following statements is correct concerning this tank?
AI Explanation
The correct answer is D) All of the above.
This is because:
1) The gas free status of an empty fuel tank is only valid as long as the initial conditions remain unchanged. If the tank is disturbed or additional sources of gas are introduced, the tank would need to be retested.
2) For a tank to be considered "gas free", the concentration of flammable gas must be less than 10% of the lower flammable limit, per industry standards and regulations.
3) Since the gas free status can change, the tank should be frequently retested to ensure it remains within safe limits. The other options are incorrect because they only address part of the requirements for a tank to maintain gas free status.
Related Questions
#60 The instrument shown in the illustration has not been used for several weeks. Prior to its use for testing a compartment, you should _______________. Illustration SF-0003 #61 A fuel tank on a barge has been certified by a marine chemist as being "Safe for Men" and "Safe for fire." This condition may change if _______________.#63 If a cargo tank has not been certified as gas free, _______________.#64 A fuel tank is considered to be gas free when the tank is _______________.#65 Which of the following conditions must be met before a marine chemist will issue a certificate for a compartment to be "safe for workers, safe for hot-work"?