Line B Testing Mechanical Safety Devices

Question 1

Which code regulates the installation and testing of safety relief valves?

Answer 1

ASME Boiler and Pressure Vessel code

Question 2

What is the maximum servicing interval for a pressure relief device installed on a 50 psig steam boiler?

Answer 2

Every five years

Question 3

How often should a lift test be performed for a pressure relief device installed on a 50 psig steam boiler?

Answer 3

Annually

Question 4

What is the maximum servicing interval for a pressure relief device installed on a 12 psig steam boiler?

Answer 4

Every five years

Question 5

How often should a lift test be performed for a pressure relief device installed on a 12 psig steam boiler?

Answer 5

Annually

Question 6

How often should a lift test be performed for a pressure relief device installed on a 150 psig hot water heating boiler?

Answer 6

Every two years

Question 7

What fluid should a pressure relief device that has been serviced and installed on a steam boiler be tested on?

Answer 7

Steam

Question 8

What fluid should a pressure relief device that has been serviced and installed on a hot water heating boiler be tested on?

Answer 8

a. Air
b. Steam
c. Water

Question 9

When performing a lift test for a safety valve installed on a low-pressure steam boiler, at what percent must the pressure be under the device disk prior to lifting the test lever?

Answer 9

At least 75% of the Device set pressure