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

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Each automatically fired ASME Section IV steam heating boiler shall be protected from overpressure by how many pressure-operated controls, and what is the high-limit rule?

Two pressure-operated controls; the safety limit shall cut off fuel to prevent pressure from exceeding 15 psi and cannot be set above 15 psi Three controls, including a vacuum breaker No pressure controls if a 15 psi safety valve is installed One operating control set at 15 psi

Correct Answer:

Two pressure-operated controls; the safety limit shall cut off fuel to prevent pressure from exceeding 15 psi and cannot be set above 15 psi

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