MI Boiler Operator Practice Questions - Michigan Boiler Operator License Exam

What is the purpose of the main steam stop valve on a boiler?

To isolate the boiler from the steam distribution header for maintenance or shutdown To regulate the steam pressure during normal operation To prevent backflow of condensate into the boiler To serve as a secondary safety relief device

Correct Answer:

To isolate the boiler from the steam distribution header for maintenance or shutdown

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