SC Pressure And Process Piping Practice Questions - South Carolina Pressure And Process Piping Contractor Examination Exam

Which set of conditions must ALL be true before a B31.3 owner may designate Category D fluid service?

The fluid is flammable, the pressure is 600 psig, and the temperature is 800°F The fluid is nonflammable, nontoxic, and not damaging to human tissue; design pressure is not over 150 psi; design temperature is not over 366°F; and the fluid is not colder than -20°F except by ambient conditions The fluid is so toxic that a single exposure can cause irreversible harm Any water line, regardless of pressure or temperature

Correct Answer:

The fluid is nonflammable, nontoxic, and not damaging to human tissue; design pressure is not over 150 psi; design temperature is not over 366°F; and the fluid is not colder than -20°F except by ambient conditions

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