Proper Storage and Layup of Out-of-Service Steam Boilers
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Questions and Answers

What is the recommended frequency for checking desiccant trays?

  • Bi-weekly (correct)
  • Monthly
  • Daily
  • Weekly

When should the boiler chemistry be adjusted in wet layup?

  • During boiler operation (correct)
  • While draining the boiler
  • After shutting down the boiler
  • Before filling the boiler

What should be done prior to placing the boiler under wet layup?

  • Filling the boiler until it overflows
  • Depressurizing and opening the vents
  • Draining and cleaning the boiler (correct)
  • Adjusting pH of the water to 10

How should the boiler pressure be maintained during the layup period?

<p>With a head tank (D)</p> Signup and view all the answers

At what concentration should the sodium sulfite be adjusted for wet layup?

<p>200 ppm (C)</p> Signup and view all the answers

What is the most critical factor for maintaining the longevity of an out-of-service steam boiler?

<p>Proper storage (B)</p> Signup and view all the answers

When is the dry layup method most often chosen for a steam boiler?

<p>Shutdown in freezing conditions (D)</p> Signup and view all the answers

What quantity of quicklime does ASME BPVC Section VII recommend for every 2.83 m3 of boiler volume when performing a dry layup?

<p>3.2 kg (A)</p> Signup and view all the answers

What is used to force the air through the boiler and out the steam drum during a dry layup?

<p>Air movers (B)</p> Signup and view all the answers

What must be done to the handholes, manholes, inspection ports, and all openings to and from the boiler during a dry layup?

<p>They must be sealed and made leak tight (C)</p> Signup and view all the answers

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