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Natural Gas Emergencies SOP Quiz
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Natural Gas Emergencies SOP Quiz

Created by
@LighterElm

Questions and Answers

What should be done if the source of the natural gas leak cannot be identified?

  • Ventilate the building and continue monitoring for natural gas
  • Request NICOR to the scene immediately
  • Evacuate the adjacent buildings and increase the evacuation distance to 300 feet
  • Shut off the gas supply at the meter and evacuate the residents to a safe location (correct)

    • What is the recommended action if natural gas is detected while monitoring explosive gases?

  • Ventilate the building and continue monitoring for natural gas
  • Evacuate the residents to a safe location (correct)
  • Use a chin strap for the helmet
  • Request a gas company response

    • What should be done if measurements outside of the affected building or hazardous area return LEL readings greater than or equal to 25%?

  • Increase the evacuation distance to 300 feet
  • Shut off the gas supply at the meter and evacuate the residents to a safe location
  • Request a gas company response through NWCD to investigate the leak (correct)
  • Continue monitoring the atmosphere of any potentially exposed structures or areas

    • What is the purpose of shutting off the gas supply at the meter?

    <p>To prevent further gas from entering the building</p> Signup and view all the answers

    What should be done if natural gas is found in multiple buildings?

    <p>Increase the evacuation distance to 300 feet from the additional buildings that have gas present</p> Signup and view all the answers

    What is the recommended action if it is suspected that natural gas is migrating into the residence from a remote location?

    <p>Monitor the adjacent buildings for natural gas</p> Signup and view all the answers

    What should be done if natural gas building up after the meter has been shut down?

    <p>Request a gas company response through NWCD</p> Signup and view all the answers

    What should be done after the gas meters have been shut off?

    <p>Contact ComEd to remotely shut power off to the building</p> Signup and view all the answers

    According to the guideline, what is the minimum distance a secondary unit, including the district ambulance, should park from the incident location?

    <p>300 feet</p> Signup and view all the answers

    What is the main purpose of the Hoffman Estates Fire Department's Standard Operating Guideline for Natural Gas Emergencies?

    <p>To establish a protocol for responding to incidents classified as a Natural Gas Leak by Northwest Central Dispatch</p> Signup and view all the answers

    The guideline mentions avoiding parking over electrical or sewer manholes. What is the main reason for this precaution?

    <p>To prevent the fire apparatus from becoming an ignition source for migrating natural gas</p> Signup and view all the answers

    What does the guideline recommend for the first responding Engine in a single-family/townhome natural gas emergency?

    <p>Park 100 feet away from the front of the building</p> Signup and view all the answers

    Why does the guideline suggest parking in line with one of the corners of the building in the event of an explosion?

    <p>To provide the first-in unit with the most protection</p> Signup and view all the answers

    What is the recommended action for atmospheric monitors before entering a building during a natural gas emergency?

    <p>Turn them on in a clean environment</p> Signup and view all the answers

    When entering a building during a natural gas emergency, what level of Personal Protective Equipment (PPE) is recommended for personnel?

    <p>Full PPE, including SCBA</p> Signup and view all the answers

    What is the guideline's stance on the possibility of altering its procedures?

    <p>The procedures can be altered based on information received from NWCD or to achieve a faster response</p> Signup and view all the answers

    What should be done first when responding to a natural gas leak?

    <p>Secure the affected area and eliminate all sources of ignition.</p> Signup and view all the answers

    What should firefighters do if a responding company conducts forcible entry?

    <p>Request law enforcement and complete the required documentation.</p> Signup and view all the answers

    At what concentration of LEL readings should immediate action be taken inside a building?

    <p>10% LEL</p> Signup and view all the answers

    Which of these situations requires law enforcement assistance? (Select all that apply)

    <p>When a responding company conducts forcible entry.</p> Signup and view all the answers

    What is the safe action to take if natural gas is leaking from an excavated hole?

    <p>Divert the hose line flow away from the hole.</p> Signup and view all the answers

    Which condition requires requesting a Code 3 response?

    <p>Oxygen levels less than or equal to 19.5%</p> Signup and view all the answers

    What is the minimum distance that evacuated people should maintain from the affected building?

    <p>300 feet</p> Signup and view all the answers

    What should firefighters do with a fog nozzle when dealing with escaping natural gas?

    <p>Use it to disperse escaping natural gas away from exposed structures.</p> Signup and view all the answers

    What is the primary purpose of using fog nozzles during a gas leak?

    <p>To disperse escaping natural gas and direct it away from structures.</p> Signup and view all the answers

    What is the primary concern regarding the use of a fog nozzle to disperse escaping natural gas?

    <p>It might damage exposed structures.</p> Signup and view all the answers

    What action should be taken if a large volume of natural gas is leaking inside a building?

    <p>Call for additional personnel for evacuation.</p> Signup and view all the answers

    When is it appropriate to attempt extinguishing a natural gas fed fire?

    <p>Once the gas supply has been controlled.</p> Signup and view all the answers

    Where should a positive source of water be secured during a gas leak situation?

    <p>In a safe area away from gas readings and potential collapse zones.</p> Signup and view all the answers

    What should be done if no immediate danger is detected after the initial response to a gas leak?

    <p>Stand by in a ready position until the gas company resolves the issue.</p> Signup and view all the answers

    What is the purpose of securing a positive source of water in a safe area?

    <p>To use for firefighting in case of other emergencies.</p> Signup and view all the answers

    What should firefighters do when natural gas readings fall below 10% LEL?

    <p>Stand in a ready position until the leak can be controlled.</p> Signup and view all the answers

    Study Notes

    Natural Gas Emergencies

    Purpose and Policy

    • The purpose of this guideline is to provide standardized responses to natural gas leak incidents.
    • The policy is to follow this guideline, but it may be altered for a more appropriate response based on information from Northwest Central Dispatch (NWCD) or to achieve a faster response.

    Procedure for Single Family/Townhomes

    • The first responding Engine parks 100 feet before or after the location, away from the front of the building, to avoid the potential collapse/blast zone.
    • Secondary units, including the district ambulance, park a minimum of 300 feet from the incident location.
    • Atmospheric monitors are turned on in a clean environment prior to entering the building.
    • Full PPE is worn by personnel entering the building.
    • If natural gas is detected, residents are evacuated to a safe location.
    • If the source of the natural gas leak is identified and mitigated, residents may re-enter the building once all natural gas has been ventilated.

    Procedure for Multiple Buildings

    • If natural gas is found in multiple buildings, the initial evacuation distance is increased to 300 feet from the additional buildings that have gas present.
    • The affected buildings have their gas meters shut off and ComEd is contacted to remotely shut power off to the building.

    Measurements and Responses

    • If LEL readings are greater than 0% but less than 25%, request a gas company response to investigate the leak.
    • If LEL readings are greater than or equal to 25%, or there is a large volume of leaking natural gas:
      • Secure the affected area and eliminate all sources of ignition.
      • Request a gas company response to shut off the flow of gas to the affected area.
      • Secure a positive source of water in a safe area.
      • Lead out and charge a hose line with a fog nozzle to disperse escaping natural gas.
      • Use fog nozzles to direct natural gas away from exposed structures.

    Structure with Large Number of Occupants

    • If LEL readings are greater than or equal to 10% LEL, or oxygen levels are less than or equal to 19.5%, or there is an obvious large volume of natural gas leaking:
      • Request a Code 3 response to provide adequate personnel for evacuation and additional monitoring.
      • Request a gas company response to shut off the flow of gas to the affected area.
      • Request ComEd to remotely shut down power to the affected building.
      • Ensure that all occupants and bystanders exit the affected building immediately.

    Special Considerations

    • The Company Officer should consider requesting law enforcement for assistance with traffic control.
    • Do not attempt to extinguish a natural gas fed fire until the gas supply can be controlled.

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    Description

    Test your knowledge of the Standard Operating Guidelines for Natural Gas Emergencies by the Hoffman Estates Fire Department. This quiz is NIMS compliant and effective as of January 1, 2022.

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