Steam Plants: Identifying and Preventing Water Hammer
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Questions and Answers

What is the main focus of this objective?

  • Preventing and responding to water hammer (correct)
  • Identifying different types of piping systems
  • Understanding the process of steam generation
  • Exploring the effects of water hammer on steam plants

How is water hammer recognizable?

  • By the sudden acceleration of fluid
  • By the introduction of steam into cold steam lines
  • By the closure of discharge check valves
  • Through the shaking of piping systems (correct)

What causes water hammer to occur when pumps stop?

  • Sudden acceleration of fluid
  • Closure of discharge check valves
  • Introduction of steam into cold steam lines
  • Sudden closure of discharge check valves (correct)

What can the consequences of water hammer range from?

<p>Severe shock to pipe failures (C)</p> Signup and view all the answers

When does water hammer occur when steam is first admitted into cold steam lines?

<p>When steam is first admitted (C)</p> Signup and view all the answers

What is imperative for operators in terms of water hammer?

<p>Being familiar with methods of water hammer prevention (D)</p> Signup and view all the answers

What can cause water hammer?

<p>Sudden stoppage or sudden acceleration of fluid (B)</p> Signup and view all the answers

What can cause sudden stoppage?

<p>Swing check valves closing suddenly when pumps stop or control valves close quickly (C)</p> Signup and view all the answers

What causes sudden fluid acceleration?

<p>Pumps starting suddenly, with discharge valves fully open (D)</p> Signup and view all the answers

How can water hammer be prevented?

<p>Operating equipment carefully (D)</p> Signup and view all the answers

What is a design solution to prevent water hammer in steam systems?

<p>Install warm-up valves around steam valves on steam lines larger than DN 50 (D)</p> Signup and view all the answers

What should be done if water hammer occurs while placing a boiler on-line?

<p>Turn off the boiler and close the non-return valve (D)</p> Signup and view all the answers

How can malfunctioning steam traps be addressed?

<p>Open steam trap test valves, or use other means to locate malfunctioning steam traps (B)</p> Signup and view all the answers

What can help remove moisture from the steam in longer saturated steam lines?

<p>Install steam separators in longer saturated steam lines (D)</p> Signup and view all the answers

How can fluid velocities be reduced in piping systems?

<p>Redesign piping systems so that fluid velocities are lower (A)</p> Signup and view all the answers

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