Engine_2014 : Steam Plants - 269/1951
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| Coast Guard Regulations (46 CFR) state that a marine inspector may require a boiler to be drilled or gaged to determine actual thickness __________ . |
| A) at the first inspection for certification |
| B) to preclude nondestructive testing methods |
| C) at any time its safety is in doubt |
| D) when boiler drum thickness has decreased by 5% |
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