Pressure relief valves shall be tested how often?

Pressure relief valves shall be tested how often?

• A. Daily
• B. Weekly
• C. Yearly
• D. Monthly

Answer: (C)

Pressure relief valves must operate reliably to prevent overpressure, so their ability to open at the correct pressure and vent effectively must be verified regularly. The functional test is typically done once a year to confirm the actual set pressure, proper reseating after relief, and absence of leakage, balancing safety with practicality and downtime. Visual checks or simple inspections can happen more often, but testing every day, week, or month is not necessary and yearly testing is the standard interval for confirming proper performance.

Pressure relief valves must operate reliably to prevent overpressure, so their ability to open at the correct pressure and vent effectively must be verified regularly. The functional test is typically done once a year to confirm the actual set pressure, proper reseating after relief, and absence of leakage, balancing safety with practicality and downtime. Visual checks or simple inspections can happen more often, but testing every day, week, or month is not necessary and yearly testing is the standard interval for confirming proper performance.