SC Boiler Installation Practice Questions - South Carolina Boiler Installation Contractor Examination Exam

On an automatically fired gas or oil boiler, the main fuel train is required to include which shutoff arrangement?

A single manual cock at the burner only Automatic safety shutoff valve(s) that close on any interlock trip (typically two valves in series on larger CSD-1/NFPA 85 trains) plus a manual tightness-test provision A check valve in the gas line in place of safety shutoff valves A water-feed solenoid used as the fuel valve

Correct Answer:

Automatic safety shutoff valve(s) that close on any interlock trip (typically two valves in series on larger CSD-1/NFPA 85 trains) plus a manual tightness-test provision

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