Boiler Safety Valve Testing Procedure

What is the recommended time for the safety shut-off valve to close after the main burner test firing valve is closed for a gas burner with an interrupted pilot?

Less than four seconds

What should be done if the ultraviolet scanner fires excessively when exposed to ambient light?

Replace the scanner

How often does ASME CSD-1 recommend replacing flame rods and scanners?

Annually

What is the purpose of the post-purge and safety shut-down/lockout in the programmed combustion control?

To clear any remaining combustible gases Signup and view all the answers

What is the recommended frequency for testing the low gas pressure cut-off switch according to ASME CSD-1?

Monthly Signup and view all the answers

How can the low gas pressure cut-off be tested during the operation of the boiler?

By quickly closing the main gas valve upstream of the low gas pressure switch Signup and view all the answers

What is recommended for testing combustion air proving switches?

Developing approved, safe, site-specific procedures for testing airflow proving switches Signup and view all the answers

What should be done prior to performing a pop test on safety valves?

Performing a try lever test to ensure the safety valve is not seized Signup and view all the answers

What is important before conducting a manual try lever test for heating boilers in steam service?

Ensuring that all personnel are cleared from the area near the safety valve before conducting a manual try lever test Signup and view all the answers

What should be done if a safety valve continues to simmer during a manual try lever test?

The valve must be replaced or repaired by an authorized valve repair agency Signup and view all the answers

What is the purpose of rapidly draining the float chamber in a boiler?

To discharge sediment from the base of the float chamber Signup and view all the answers

How often should the float chamber blowdown test be completed for power boilers according to ASME CSD-1?

Daily Signup and view all the answers

What is the recommended frequency for completing the slow drain test for boilers according to ASME CSD-1?

Semi-annually Signup and view all the answers

How can the operation of a feedwater solenoid valve be checked?

By observing the levels at which the feedwater system starts and stops Signup and view all the answers

What should be done annually as part of the maintenance and inspection of water level controls?

Inspecting electrical contacts for cleanliness Signup and view all the answers

What should be done if the safety valve fails to open at the required pressure?

Apply the try lever test a few times and repeat the pop test Signup and view all the answers

What is the acceptable range for the safety valve to open during the pop test according to ASME BPVC?

13 to 17 psi (85 to 115 kPa) Signup and view all the answers

What does ASME BPVC state regarding the blowdown of safety valves?

Blowdown should be between 2 to 4 psi (15 to 30 kPa) Signup and view all the answers

What is the purpose of an accumulation test for safety valves?

To verify if the installed safety valve capacity is sufficient Signup and view all the answers

What is the maximum acceptable pressure during an accumulation test for a boiler with a MAWP of 1380 kPa and a safety valve set to 1310 kPa?

1389 kPa Signup and view all the answers

What is the recommended frequency for testing the boiler flame failure detection systems?

Weekly Signup and view all the answers

When testing the flame failure device on a boiler, what is necessary to simulate?

Flame failure condition Signup and view all the answers

According to ASME BPVC VI, what does the recommended procedure describe the testing of?

Flame safeguard devices Signup and view all the answers

What should be closed to test the gas burner with a thermocouple or thermopile flame sensor?

Main burner test firing valve Signup and view all the answers

What is important to follow when testing various devices according to the text?

Manufacturer testing instructions Signup and view all the answers

What is the purpose of the flow switch in a copper tubular and copper fin-tube boiler?

To provide positive water circulation to protect heat transfer surfaces Signup and view all the answers

How can the flow switch in a copper tubular and copper fin-tube boiler be tested?

By slowly closing the boiler outlet valve and observing the burner Signup and view all the answers

What is a recommended means for testing the operation of the external low-water fuel cut-off without draining the entire system?

Installing special combination test and check valves Signup and view all the answers

How often does ASME BPVC VI recommend testing the low water cut-off of hot water heating boilers?