Question 484Steam Plants - Assistant Engineer
70% to passWhen a boiler economizer is fitted with a valved bypass, Coast Guard Regulations
AA
BB
CC
DD
AI Explanation
The correct answer is A. When a boiler economizer is fitted with a valved bypass, Coast Guard Regulations require that the bypass be kept open during startup and shutdown to prevent thermal shock to the economizer. This protects the economizer from damage due to sudden changes in temperature. The other options are incorrect as they do not accurately describe the regulatory requirements for a boiler economizer with a valved bypass.
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