BMS Controls and Procedures
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Questions and Answers

What is the primary function of the Burner Management System (BMS)?

  • To monitor and control the proper sequence of fuel firing equipment (correct)
  • To regulate the cooling system of the furnace
  • To regulate the air flow in the furnace during operation
  • To provide fuel to the furnace during start-up
  • What is the purpose of the purge cycle in the BMS?

  • To regulate the temperature of the furnace
  • To complete the furnace purge cycle prior to firing fuel (correct)
  • To remove impurities from the fuel
  • To ignite the fuel during start-up
  • What is the function of the trip valve in the BMS?

  • To initiate a fuel trip when abnormal conditions exist (correct)
  • To regulate the air flow in the furnace
  • To monitor the flame scanner operation
  • To provide fuel to the furnace during operation
  • Why is it essential to ensure all parts of the BMS are in operable condition?

    <p>To provide the function for which the system is designed</p> Signup and view all the answers

    What is the purpose of the ignition system in the BMS?

    <p>To ignite the fuel during start-up</p> Signup and view all the answers

    What is the purpose of the flame scanner in the BMS?

    <p>To monitor the flame during operation</p> Signup and view all the answers

    What happens when certain abnormal operating conditions exist in the BMS?

    <p>A fuel trip is initiated</p> Signup and view all the answers

    What is the purpose of the heavy oil trip valve in the BMS?

    <p>To initiate a trip when abnormal conditions exist in the heavy oil system</p> Signup and view all the answers

    Why is it important to recognize that abnormal operating scenarios may be encountered during unit operation?

    <p>To prepare for potential safety risks</p> Signup and view all the answers

    What is the purpose of the gas trip valve in the BMS?

    <p>To initiate a trip when abnormal conditions exist in the gas system</p> Signup and view all the answers

    Study Notes

    Burner Management System (BMS) Logic

    • Plant specific administrative and/or safety policies and procedures take precedence if in conflict with this document.

    System Functions

    • Ensure a furnace purge cycle is completed before firing any fuel.
    • Prevent start-up of individual fuel firing equipment unless permissive interlocks are satisfied.
    • Monitor and control the proper component sequence during start-up and shutdown of fuel firing equipment.
    • Ensure safety interlocks remain satisfied during operation of fuel firing equipment.
    • Provide component status feedback to the Operator and the unit control system.
    • Initiate a fuel trip when abnormal operating conditions exist.

    Ignitor Gas Leak Test

    • Activated by the "Test Start" push button.
    • Consists of two 60-second phases:
      • Phase 1: Test corner trip valves and riser vent valves for leakage.
      • Phase 2: Test header trip valve for leakage.

    Ignitor Gas Header Trip Valve

    • Automatically closes if:
      • Ignitor gas header pressure is low or high.
      • No master fuel trip signal exists.
      • No close command for the Ignitor Gas Header Trip Valve exists.
      • Nozzle tilts are not horizontal or airflow is ≥ 40% or any fuel elevation is in service.

    System Pressurization

    • Enables the leak test by pressurizing the ignitor gas piping downstream of the header trip valve.
    • Involves closing all ignitor gas riser vent valves and sending an "open command" to the Ignitor Gas Control Valve.

    Miscellaneous

    • All parts of the BMS must be in operable condition and in service at all times.
    • Recognize that abnormal operating scenarios may be encountered during unit operation.

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    Quiz Team

    Description

    This quiz covers administrative and safety policies, as well as procedures related to BMS controls, including fuel sequential tripping and light/heavy oil start/stop control.

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