Testing and Repair of Pressure Relief Valves
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Questions and Answers

What is the purpose of the 'pop test' for safety valves?

  • To check the full operation of the safety valve, including the exact pressures at which it opens and closes (correct)
  • To determine whether the valve is operating properly or if it requires repair or replacement
  • To increase boiler steam pressure to the safety valve set point
  • To perform maintenance on the safety valve

When should the pop test be performed?

  • Annually (correct)
  • Bi-annually
  • Quarterly
  • Semi-annually

Who is qualified to adjust or repair pressure relief valves according to ASME BPVC sections?

  • Valve manufacturer or its authorized repair representative (correct)
  • Boiler maintenance personnel
  • Local boiler operators
  • Valve users

What should be done if the safety valve continues to simmer after operating the try lever?

<p>It should be repaired or replaced (B)</p> Signup and view all the answers

What should be compared during the pop test to determine if the valve is operating properly?

<p>Opening pressure and blowdown (D)</p> Signup and view all the answers

What should be done before taking a boiler off-line for maintenance, according to the text?

<p>Perform a pop test on all safety valves (C)</p> Signup and view all the answers

What is the purpose of a try lever test for pressure relief valves?

<p>To determine if the valve is operating freely (D)</p> Signup and view all the answers

How often should try lever tests be performed for power boilers operating below 2760 kPa?

<p>Every six months (D)</p> Signup and view all the answers

What is the minimum required pressure for performing a try lever test on a steam heating boiler?

<p>35 kPa (D)</p> Signup and view all the answers

When should try lever tests be performed?

<p>Before pop tests and accumulation tests (C)</p> Signup and view all the answers

Where can detailed descriptions of pressure relief valve test procedures be found?

<p>Part B, Unit 4, Chapter 4 Operational Checks (C)</p> Signup and view all the answers

What is the primary purpose of keeping pressure relief valves in good working condition?

<p>To ensure safe operation of the equipment (B)</p> Signup and view all the answers
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