4BE3 U5 C4 Obj 1 EMH
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EASY What is the requirement for safety watches at the boiler entrance?

  • Only when multiple workers are inside the boiler
  • Whenever someone is inside the boiler (correct)
  • Only during internal inspections of boilers
  • When the inspector is examining the waterside

    • What is the primary purpose of using portable lamps of 12 V or less?

  • To increase the visibility of surface irregularities
  • To reduce the amount of PPE worn by workers
  • To reduce the cost of lighting equipment
  • To eliminate the danger of electrocution to workers inside the boiler (correct)

    • What is the recommended type of light bulbs for use in boiler lighting?

  • Explosion-proof light bulbs (correct)
  • Fluorescent lights
  • High-voltage bulbs
  • Regular incandescent bulbs

    • What should be cleaned from the fireside surfaces of the boiler?

    <p>Fly ash, clinkers, and soot</p> Signup and view all the answers

    What is the typical timing for cleaning the waterside of the boiler?

    <p>After the inspector has examined it</p> Signup and view all the answers

    Why is it necessary to operate the soot blowers when the boiler load is above 50%?

    <p>To ensure the boiler is clean before it is shut down</p> Signup and view all the answers

    What is the purpose of increasing the frequency of bottom blowoffs, water column blowdowns, and low water cut-off blowdowns?

    <p>To remove as much sludge and sediment from the boiler as possible</p> Signup and view all the answers

    Why should the boiler be cooled until the pressure is 175 kPa before opening the drum vents?

    <p>To reduce the risk of steam burns</p> Signup and view all the answers

    What should be done with the non-return valve after shutting down the boiler?

    <p>It should be locked open</p> Signup and view all the answers

    Why is it important to tag all block valves that have been locked closed or locked open?

    <p>To make it easier to account for all the valves when they are removed</p> Signup and view all the answers

    What should be done to the boiler water before draining the boiler?

    <p>It should be cooled to 90°C</p> Signup and view all the answers

    Why should the boiler drums be opened in a specific order?

    <p>To prevent steam burns</p> Signup and view all the answers

    What should be done with the blowoff valves after flushing the boiler?

    <p>They should be closed and locked</p> Signup and view all the answers

    Why is it necessary to obtain a confined space entry permit before entering the boiler?

    <p>To ensure the atmosphere is safe to enter</p> Signup and view all the answers

    What should be done with the air dampers for all fans after shutting down the boiler?

    <p>They should be closed</p> Signup and view all the answers

    What is the primary purpose of an external boiler inspection?

    <p>To identify any safety concerns</p> Signup and view all the answers

    What is typically required before an external boiler inspection?

    <p>Having the boiler in operation</p> Signup and view all the answers

    What might an inspector check during an external inspection of a steam boiler?

    <p>various parameters, including leaks, hot spots, and safety valve operation</p> Signup and view all the answers

    What is typically required for an internal boiler inspection?

    <p>Removing the boiler from operation</p> Signup and view all the answers

    What might an inspector check for during an external inspection of a steam boiler?

    <p>various parameters, including water level control accuracy and venting effectiveness</p> Signup and view all the answers

    Why should the local authority be consulted before an external inspection?

    <p>For any special preparation requirements and inspection scheduling</p> Signup and view all the answers

    What is typically checked during an external inspection of a steam boiler?

    <p>various parameters, including proper burner operation and pressure gauge accuracy</p> Signup and view all the answers

    What is important for boiler operators to provide during an external inspection?

    <p>Reasonable assistance and disclosure of known boiler defects</p> Signup and view all the answers

    MEDIUM What is the primary purpose of an external boiler inspection?

    <p>To ensure the boiler operates safely</p> Signup and view all the answers

    What is required before an external boiler inspection?

    <p>The boiler in operation and access to the inspector</p> Signup and view all the answers

    During an external inspection, what might an inspector check for?

    <p>All of the above</p> Signup and view all the answers

    What is necessary before an internal inspection can begin?

    <p>Remove the boiler from operation</p> Signup and view all the answers

    Why should the local authority be consulted?

    <p>For special preparation requirements</p> Signup and view all the answers

    What is typically checked during an external inspection?

    <p>All of the above and more</p> Signup and view all the answers

    What is important for boiler operators to provide during an external inspection?

    <p>Reasonable assistance to the inspector</p> Signup and view all the answers

    What is an important aspect of an internal inspection?

    <p>A detailed examination of the fireside and waterside</p> Signup and view all the answers

    What should be done to the boiler load before operating the soot blowers?

    <p>Keep the load above 50%</p> Signup and view all the answers

    What is the purpose of increasing the frequency of bottom blowoffs, water column blowdowns, and low water cut-off blowdowns?

    <p>To remove sludge and sediment from the boiler</p> Signup and view all the answers

    What should be done with the pulverizers in a coal-fired boiler when shutting down?

    <p>Run them until they are empty</p> Signup and view all the answers

    What is the recommended temperature for draining the boiler?

    <p>90°C</p> Signup and view all the answers

    Why should the boiler drums be opened in a specific order?

    <p>To prevent steam burns</p> Signup and view all the answers

    What should be done with the blowoff valves after flushing the boiler?

    <p>Lock them closed and tag them</p> Signup and view all the answers

    Why is it necessary to isolate the boiler before maintenance?

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

    What should be done with the chemical feed pumps and boiler feed pumps when shutting down the boiler?

    <p>Shut them down and lock them out</p> Signup and view all the answers

    Why is it necessary to ventilate the boiler before entering?

    <p>To remove any hazardous gases</p> Signup and view all the answers

    What should be done with the air dampers for all fans after shutting down the boiler?

    <p>Close them fully</p> Signup and view all the answers

    What is the primary purpose of having workers and safety watch personnel trained in confined space entry and rescue?

    <p>To provide a safe emergency response in case of an accident</p> Signup and view all the answers

    Why is it important to use portable lamps of 12 V or less, with current supplied from transformers or batteries?

    <p>To minimize the risk of electrical shock inside the boiler</p> Signup and view all the answers

    What is the primary reason for cleaning the fireside surfaces of the boiler?

    <p>To reduce the risk of explosion due to accumulated fly ash, clinkers, and soot</p> Signup and view all the answers

    Why are flashlights usually recommended for illuminating surface irregularities during internal inspections of boilers and vessels?

    <p>They provide a more focused beam of light</p> Signup and view all the answers

    What is the typical approach to cleaning the waterside of the boiler?

    <p>It is cleaned only after the inspector has examined it</p> Signup and view all the answers

    HARD What is the primary reason for having a trained safety watch at the boiler entrance during internal inspections?

    <p>To monitor the atmosphere inside the boiler for potential hazards</p> Signup and view all the answers

    What is the primary reason for using explosion-proof light bulbs in boiler lighting?

    <p>To reduce the risk of explosion in hazardous environments</p> Signup and view all the answers

    Why is it necessary to clean the fireside surfaces of the boiler?

    <p>To remove fly ash, clinkers, and soot that can reduce heat transfer</p> Signup and view all the answers

    What is the primary reason for wearing protective clothing, protective eyewear, and gloves during internal inspections?

    <p>To provide an additional layer of protection against hazards</p> Signup and view all the answers

    Why is it necessary to use portable lamps with a voltage of 12 V or less during internal inspections?

    <p>To reduce the risk of electrocution</p> Signup and view all the answers

    What is the primary purpose of disclosing known boiler defects during an external inspection?

    <p>To ensure the inspector is aware of potential safety risks</p> Signup and view all the answers

    Why is it necessary to remove the boiler from operation before an internal inspection?

    <p>To prevent any potential hazards during the inspection</p> Signup and view all the answers

    What is typically checked during an external inspection of a steam boiler?

    <p>All of the above and more</p> Signup and view all the answers

    What is the purpose of checking the pressure gauge accuracy during an external inspection?

    <p>To ensure the boiler is operating within its designated pressure range</p> Signup and view all the answers

    Why is it necessary to consult the local authority with jurisdiction before an external inspection?

    <p>To ensure compliance with regulatory requirements</p> Signup and view all the answers

    What is the purpose of checking the venting effectiveness during an external inspection?

    <p>To verify the proper functioning of the venting system</p> Signup and view all the answers

    What is typically required before an internal inspection of a boiler can begin?

    <p>The boiler must be shut down and prepared for inspection</p> Signup and view all the answers

    Why is it important for boiler operators to provide reasonable assistance to the inspector during an external inspection?

    <p>To facilitate the inspection process</p> Signup and view all the answers

    What is the primary reason for operating the soot blowers when the boiler load is above 50%?

    <p>To ensure effective cleaning of the fireside surfaces</p> Signup and view all the answers

    What is the purpose of reducing the boiler load before taking it offline?

    <p>To make cleaning easier when the boiler is opened</p> Signup and view all the answers

    What should be done with the pulverizers in a coal-fired boiler when shutting down?

    <p>Run them until they are empty</p> Signup and view all the answers

    Why is it necessary to isolate the boiler before maintenance?

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

    What should be done with the chemical feed pumps and boiler feed pumps when shutting down the boiler?

    <p>Shut them down and lock them out</p> Signup and view all the answers

    Why is it necessary to ventilate the boiler before entering?

    <p>To remove hazardous gases and ensure safe entry</p> Signup and view all the answers

    What should be done with the air dampers for all fans after shutting down the boiler?

    <p>Close them to prevent air leaks</p> Signup and view all the answers

    Why is it necessary to obtain a confined space entry permit before entering the boiler?

    <p>To ensure the safety of personnel entering the boiler</p> Signup and view all the answers

    What should be done with the blowoff valves after flushing the boiler?

    <p>Lock them closed and tag them</p> Signup and view all the answers

    Why is it necessary to lock out and tag the block valves?

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

    Study Notes

    External Boiler Inspection

    • Determines if a boiler can operate safely, involving external observation and operational checks
    • No preparation required, except having the boiler in operation and providing access to the inspector
    • Boiler operators must provide reasonable assistance to the inspector and disclose any known boiler defects
    • Inspector may check for:
      • Leaks
      • Hot spots
      • Safety valve operation, set point, and capacity
      • Proper burner operation, including air damper, flame pattern, and firing rate control valve function
      • Set point accuracy of limit controls, such as pressuretrol and high pressure cut-off
      • Water level control accuracy and low water cut-off function
      • Pressure gauge accuracy
      • Venting effectiveness and chimney/breaching condition
      • Correct pressure rating of replacement fittings
      • Flue gas temperature
      • Housekeeping, general maintenance, and condition
      • Up-to-date log book entries

    Preparation for Internal Inspection

    • Involves a detailed examination of the fireside and waterside of a boiler
    • Requires the boiler to be removed from operation and extensive preparation
    • Steps to prepare for internal inspection:
      • Operate soot blowers to clean fireside surfaces
      • Increase frequency of bottom blowoffs, water column blowdowns, and low water cut-off blowdowns
      • Reduce load on boiler and cool down to 175 kPa
      • Shut down, isolate, and lock out chemical feed pumps, boiler feed pumps, and other equipment
      • Open drum vents, isolate boiler, and lock out valves
      • Close air dampers for all fans
      • Block in and lockout steam supply to various equipment
      • Open circuit breakers for motors and pumps
      • Tag all locked valves and circuit breakers with "DO NOT OPERATE" tag
      • Cool boiler water to 90°C, then open blowdown valves and drain boiler
      • Open boiler drums, starting with steam drum manhole covers
      • Flush out boiler with high-pressure water hose
      • Open fireside access door and ventilate area
      • Obtain confined space entry permit and follow procedures

    External Boiler Inspection

    • Determines if a boiler can operate safely, involving external observation and operational checks
    • No preparation required, except having the boiler in operation and providing access to the inspector
    • Boiler operators must provide reasonable assistance to the inspector and disclose any known boiler defects
    • Inspector may check for:
      • Leaks
      • Hot spots
      • Safety valve operation, set point, and capacity
      • Proper burner operation, including air damper, flame pattern, and firing rate control valve function
      • Set point accuracy of limit controls, such as pressuretrol and high pressure cut-off
      • Water level control accuracy and low water cut-off function
      • Pressure gauge accuracy
      • Venting effectiveness and chimney/breaching condition
      • Correct pressure rating of replacement fittings
      • Flue gas temperature
      • Housekeeping, general maintenance, and condition
      • Up-to-date log book entries

    Preparation for Internal Inspection

    • Involves a detailed examination of the fireside and waterside of a boiler
    • Requires the boiler to be removed from operation and extensive preparation
    • Steps to prepare for internal inspection:
      • Operate soot blowers to clean fireside surfaces
      • Increase frequency of bottom blowoffs, water column blowdowns, and low water cut-off blowdowns
      • Reduce load on boiler and cool down to 175 kPa
      • Shut down, isolate, and lock out chemical feed pumps, boiler feed pumps, and other equipment
      • Open drum vents, isolate boiler, and lock out valves
      • Close air dampers for all fans
      • Block in and lockout steam supply to various equipment
      • Open circuit breakers for motors and pumps
      • Tag all locked valves and circuit breakers with "DO NOT OPERATE" tag
      • Cool boiler water to 90°C, then open blowdown valves and drain boiler
      • Open boiler drums, starting with steam drum manhole covers
      • Flush out boiler with high-pressure water hose
      • Open fireside access door and ventilate area
      • Obtain confined space entry permit and follow procedures

    External Boiler Inspection

    • Determines if a boiler can operate safely, involving external observation and operational checks
    • No preparation required, except having the boiler in operation and providing access to the inspector
    • Boiler operators must provide reasonable assistance to the inspector and disclose any known boiler defects
    • Inspector may check for:
      • Leaks
      • Hot spots
      • Safety valve operation, set point, and capacity
      • Proper burner operation, including air damper, flame pattern, and firing rate control valve function
      • Set point accuracy of limit controls, such as pressuretrol and high pressure cut-off
      • Water level control accuracy and low water cut-off function
      • Pressure gauge accuracy
      • Venting effectiveness and chimney/breaching condition
      • Correct pressure rating of replacement fittings
      • Flue gas temperature
      • Housekeeping, general maintenance, and condition
      • Up-to-date log book entries

    Preparation for Internal Inspection

    • Involves a detailed examination of the fireside and waterside of a boiler
    • Requires the boiler to be removed from operation and extensive preparation
    • Steps to prepare for internal inspection:
      • Operate soot blowers to clean fireside surfaces
      • Increase frequency of bottom blowoffs, water column blowdowns, and low water cut-off blowdowns
      • Reduce load on boiler and cool down to 175 kPa
      • Shut down, isolate, and lock out chemical feed pumps, boiler feed pumps, and other equipment
      • Open drum vents, isolate boiler, and lock out valves
      • Close air dampers for all fans
      • Block in and lockout steam supply to various equipment
      • Open circuit breakers for motors and pumps
      • Tag all locked valves and circuit breakers with "DO NOT OPERATE" tag
      • Cool boiler water to 90°C, then open blowdown valves and drain boiler
      • Open boiler drums, starting with steam drum manhole covers
      • Flush out boiler with high-pressure water hose
      • Open fireside access door and ventilate area
      • Obtain confined space entry permit and follow procedures

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    Description

    This quiz assesses your understanding of external boiler inspection procedures, ensuring safe operation and compliance with regulations.

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