HG-614 Boiler Rules Quiz
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Questions and Answers

What is the purpose of performing low water cut-off tests in heating boiler and power boiler service?

  • To determine the cause of the low water condition
  • To test the frequency and procedures of low water cut-offs
  • To check if the boiler shuts off rapidly when the float chamber is drained (correct)
  • To isolate the feedwater and allow the boiler to steam off water

    • What are the recommended test methods for low water cut-offs in heating boiler and power boiler service?

  • Determining the cause of the low water condition
  • Draining the float chamber rapidly to check if the boiler shuts off
  • Isolating the feedwater and blowing off the boiler (correct)
  • Allowing the boiler to steam off water

    • What is the role of the operator in addressing a low water condition in a boiler?

  • Determine the cause of the low water condition and correct it before restarting the boiler (correct)
  • Isolate the feedwater and allow the boiler to steam off water
  • Reset the cut-off and restart the boiler immediately
  • Conduct rapid draining of the float chamber

    • Where can one find information about low water cut-off tests and frequencies in heating boiler and power boiler service?

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

    According to CSA B51 6.3.2.1, how many low-water fuel cut-off devices should steam boilers not continuously attended by a certified operator be equipped with?

    <p>At least two low-water fuel cut-off devices</p> Signup and view all the answers

    What does the statement 'cannot be rendered inoperative' mean in the context of low water cut-off devices?

    <p>Devices should be installed so that they cannot be made inactive</p> Signup and view all the answers

    Why may momentary contact switch be installed in parallel to the low water cut-off switch for large capacity boilers?

    <p>To avoid the need for continuous operation of the boiler</p> Signup and view all the answers

    What takes precedence over the ASME codes in Canada regarding boilers and pressure vessels?

    <p>CSA B51 Boiler, Pressure Vessel, and Pressure Piping Code</p> Signup and view all the answers

    Why should no switches be installed that render the low water cut-off inoperable according to CSA B51 6.3.2.1?

    <p>To ensure safety and prevent accidents</p> Signup and view all the answers

    What is required for large capacity boilers according to CSA B51 6.3.2.1?

    <p>Continuous operation without any breaks</p> Signup and view all the answers

    What is the minimum heat input, in Btu/hr, that requires a flow-sensing device in a coil-type boiler or a watertube boiler?

    <p>400,000 Btu/hr</p> Signup and view all the answers

    In which jurisdictional code are the flow-sensing device requirements similar to those in CSA B51?

    <p>ASME CSD-1</p> Signup and view all the answers

    What is the capacity (in boiler horsepower output) for boilers that ASME CSD-1 addresses?

    <p>Up to 300 boiler horsepower output</p> Signup and view all the answers

    How many automatic low-water fuel cutoffs are required for each automatically fired, low-pressure steam boiler according to ASME CSD-1 Part CW120?

    <p>Two</p> Signup and view all the answers

    Where should the low-water fuel cutoff be located for hot-water boilers as per ASME CSD-1 Part CW-130?

    <p>Above the lowest safe permissible water level</p> Signup and view all the answers

    What must be avoided when connecting cut-off devices to a water column for high-pressure steam boilers according to ASME CSD-1 Part CW-140?

    <p>Common water connection</p> Signup and view all the answers

    What is the main purpose of a low-water fuel cutoff for hot-water heating boilers as per ASME CSD-1 Part CW-130?

    <p>To prevent startup and cut off the boiler fuel supply automatically</p> Signup and view all the answers

    What is the requirement for a means of testing the low-water cut-offs of hot water boilers according to Part HG-614?

    <p>Resorting to draining the entire system</p> Signup and view all the answers

    What is the minimum capacity defined for a boiler in CSA B51?

    <p>It does not specify a minimum capacity</p> Signup and view all the answers

    What is required to be installed at the hot water outlet according to CSA B51?

    <p>Flow-sensing device</p> Signup and view all the answers

    What does ASME CSD-1 address?

    <p>Automatically fired boilers with capacities up to 300 boiler horsepower output</p> Signup and view all the answers

    According to CSA-B51 6.3.2.2, which statement about low-water fuel cut-off devices for hot water boilers is true?

    <p>They should be installed so that they can be tested under operational conditions.</p> Signup and view all the answers

    According to ASME BPVC I, what is the requirement for low water fuel cut-off devices on fuel-fired or waste heat fired boilers?

    <p>Not required on fuel-fired or waste heat fired boilers but required on electric boilers.</p> Signup and view all the answers

    Under what conditions may some hot water boilers be exempted from low-water fuel cut-off device requirements according to CSA B51 6.2.2.3?

    <p>If they use forced circulation to prevent overheating.</p> Signup and view all the answers

    Under what circumstance does ASME BPVC I permit the use of a low water cut-off as an alternative to a secondary means of feeding water?

    <p>Only for boilers that are not fired by gaseous, liquid, or solid fuels in suspension.</p> Signup and view all the answers

    What is the requirement for electric boilers of the resistance element type according to ASME BPVC I?

    <p>To be equipped with an automatic low-water cut-off and pressure and/or temperature controls.</p> Signup and view all the answers

    What is the requirement for heating surface area in ASME BPVC I regarding the number of means of feeding water?

    <p>To have two means of feeding water for boilers with more than 47 m2 (500 ft2) of heating surface area.</p> Signup and view all the answers

    What does ASME BPVC IV prohibit regarding the installation of low-water fuel cut-off devices in the interconnecting piping?

    <p>The installation of shutoff valves in the interconnecting piping.</p> Signup and view all the answers

    What does ASME BPVC IV require regarding the location of the automatic low-water fuel cutoff in steam heating boilers?

    <p>To be located above the highest visible part of the water gage glass.</p> Signup and view all the answers

    What is recommended by ASME VII regarding operating procedures when an automatic low water boiler trip is equipped with a water column?

    <p>To develop suitable operating procedures to prevent tripping the boiler while determining if the water column is functional and in good operating condition.</p> Signup and view all the answers

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