When should main pressure relief valves be inspected?

When should main pressure relief valves be inspected?

• A. During any fire pump test
• B. During daily checks
• C. After each test
• D. During weekly checks

Answer: (A)

The main idea is that a pressure relief valve on the main fire pump must be exercised under actual pump operation to confirm it will protect the system when pressure is rising. During a fire pump test the system reaches its discharge pressure, so the relief valve should open at its set pressure, relieve into its discharge path, and reseat properly without leaks. Verifying this during the test ensures the valve will function correctly in a real emergency and that the relief line and connected piping are clear and capable of handling the discharge. Checking only in daily or weekly rounds may not reveal improper settings or a sticking valve because those conditions only reveal themselves when the pump is actively pressurizing the system. Inspecting after every test can be redundant or misaligned with test schedules. So, inspecting during any fire pump test directly confirms the valve will perform when needed.

The main idea is that a pressure relief valve on the main fire pump must be exercised under actual pump operation to confirm it will protect the system when pressure is rising. During a fire pump test the system reaches its discharge pressure, so the relief valve should open at its set pressure, relieve into its discharge path, and reseat properly without leaks. Verifying this during the test ensures the valve will function correctly in a real emergency and that the relief line and connected piping are clear and capable of handling the discharge. Checking only in daily or weekly rounds may not reveal improper settings or a sticking valve because those conditions only reveal themselves when the pump is actively pressurizing the system. Inspecting after every test can be redundant or misaligned with test schedules. So, inspecting during any fire pump test directly confirms the valve will perform when needed.