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Engine : Motor Plants and Auxiliary Boilers - 1279/947
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Why should the main steam stop valve of an auxiliary boiler be eased off its seat and then gently closed before lighting off?
A) To ensure that the valve will not be seized shut when hot.
B) To check the valve packing.
C) To check for a tight bonnet seal.
D) To examine the valve stem for scars or nicks.
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