Boiler Management Systems Quiz
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Questions and Answers

What type of ignition systems do larger plants commonly have for their boilers?

  • Semi-automatic (correct)
  • Fully automatic
  • Manual
  • Remote-controlled
  • What is the sequence of steps followed by all ignition systems for boilers?

  • Main burner ignition, Run period, Pre-purge, Pilot ignition
  • Pilot ignition, Main burner ignition, Pre-purge, Post purge
  • Pre-purge, Pilot ignition, Main burner ignition, Run period, Post purge (correct)
  • Pre-purge, Pilot ignition, Post purge, Main burner ignition
  • What is the function of semi-automatic systems in controlling the boiler's ignition sequence?

  • They allow for remote operation of the boiler
  • They force the operator to complete the steps within a set time period (correct)
  • They speed up the ignition process
  • They follow a different sequence of steps
  • What is the difference between fully automatic and semi-automatic burner management systems?

    <p>Semi-automatic systems have additional safety features and may require manual operation</p> Signup and view all the answers

    Why do semi-automatic systems require interaction with trained operators?

    <p>To progress through the ignition sequences due to manual control elements</p> Signup and view all the answers

    What is the purpose of a pre-purge in the ignition sequence of boilers?

    <p>To remove any remaining fuel from previous operation before igniting</p> Signup and view all the answers

    Which type of boiler systems automatically recycle on call for heat, regardless of operator attendance?

    <p>Fully automatic</p> Signup and view all the answers

    What is the purpose of the proof of closure switches mentioned in the text?

    <p>To prevent the ignition sequence from beginning if the valve fails to close completely</p> Signup and view all the answers

    Which valve ensures no gas can enter the furnace when the boiler burner is off?

    <p>Valve M</p> Signup and view all the answers

    What does the local burner control panel include?

    <p>Switches to start and stop the forced draft fan, start the purge sequence, and start the burner and ignitor</p> Signup and view all the answers

    What must be satisfied before the ignition sequence can begin?

    <p>Boiler water level, boiler pressure, and fuel pressure must be within their acceptable limits</p> Signup and view all the answers

    What happens during startup with a boiler master on manual control?

    <p>The control output of the boiler master is set to zero (minimum fire)</p> Signup and view all the answers

    When should the operator press the IGNITION START pushbutton?

    <p>As soon as the pilot flame is detected</p> Signup and view all the answers

    What must be done if SSOV 'N' is of the magnetic latching valve style?

    <p>Reset it by rotating the operating lever to the CLOSED position and then back to the OPEN position</p> Signup and view all the answers

    What is required for modern burners that do not have semi-automatic magnetic latching SSOVs?

    <p>Automatically open both SSOV 'L' and SSOV 'N' during the main flame trial for ignition period</p> Signup and view all the answers

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