Engine 2014: Steam Plants

1. A The marine inspector may require any boiler to be drilled to determine its actual thickness any time its safety is in doubt.
2. B At the first inspection for certification after a water- tube boiler has been installed for ten years, it shall be gauged  by drilling to determine the actual extent of deterioration.
3. C If the thickness found as a result of gauging is less than original thickness, the boiler must be condemned.
4. D Any user of a nondestructive testing device must demonstrate that results with an accuracy of plus or minus one percent are consistently obtainable.

Tip: press A-D to answer