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Questions and Answers
What is the first action to take upon arrival at a gas leak scene?
What is the first action to take upon arrival at a gas leak scene?
Which protective equipment must personnel wear in the hot zone?
Which protective equipment must personnel wear in the hot zone?
What zones should be established around a gas leak?
What zones should be established around a gas leak?
Who assumes responsibility for controlling a gas leak upon arrival?
Who assumes responsibility for controlling a gas leak upon arrival?
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What is the minimum percentage of LEL that indicates an area should be considered within the hot zone?
What is the minimum percentage of LEL that indicates an area should be considered within the hot zone?
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What must be done if gas is detected while monitoring the air?
What must be done if gas is detected while monitoring the air?
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What should be established whenever a crew is operating within the hot zone?
What should be established whenever a crew is operating within the hot zone?
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What actions should be taken regarding gas lines?
What actions should be taken regarding gas lines?
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Who assumes responsibility for controlling a gas leak upon arrival of gas company personnel?
Who assumes responsibility for controlling a gas leak upon arrival of gas company personnel?
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What is the guideline's primary purpose?
What is the guideline's primary purpose?
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What should personnel do when readings on gas monitors inside a building indicate a leak?
What should personnel do when readings on gas monitors inside a building indicate a leak?
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Which personnel are required to comply with the guideline?
Which personnel are required to comply with the guideline?
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Which action should be avoided regarding gas-powered equipment during a gas leak situation?
Which action should be avoided regarding gas-powered equipment during a gas leak situation?
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What is the first step to be taken upon arrival at a gas leak site?
What is the first step to be taken upon arrival at a gas leak site?
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What kind of ventilation should be used for buildings with gas accumulation?
What kind of ventilation should be used for buildings with gas accumulation?
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How many personnel should enter the hot zone to assess a gas leak situation?
How many personnel should enter the hot zone to assess a gas leak situation?
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What should be done if a natural gas leak is confirmed?
What should be done if a natural gas leak is confirmed?
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Which area should be monitored when a gas leak is near a building?
Which area should be monitored when a gas leak is near a building?
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What action is recommended if a cut gas line may lead to road closures?
What action is recommended if a cut gas line may lead to road closures?
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How should a leaking underground gas line area be managed?
How should a leaking underground gas line area be managed?
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What should be done with visibly cracked soil in dry conditions?
What should be done with visibly cracked soil in dry conditions?
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What is NOT a recommended action for a cut gas line?
What is NOT a recommended action for a cut gas line?
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Who should be contacted for questions or comments about this SOG?
Who should be contacted for questions or comments about this SOG?
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What does this policy NOT create regarding legal duty?
What does this policy NOT create regarding legal duty?
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What should the fire department do immediately upon arrival at a natural gas leak site?
What should the fire department do immediately upon arrival at a natural gas leak site?
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Which of the following is NOT a zone that should be established around a gas leak?
Which of the following is NOT a zone that should be established around a gas leak?
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What is the primary role of the utility company once they arrive at a gas leak scene?
What is the primary role of the utility company once they arrive at a gas leak scene?
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During a gas leak operation, which equipment is mandatory for personnel in the hot zone?
During a gas leak operation, which equipment is mandatory for personnel in the hot zone?
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What is the sequence of actions regarding monitoring and evacuation when responding to a gas leak?
What is the sequence of actions regarding monitoring and evacuation when responding to a gas leak?
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What should personnel do if gas is detected during monitoring?
What should personnel do if gas is detected during monitoring?
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What kind of atmosphere requires constant monitoring for personnel working there?
What kind of atmosphere requires constant monitoring for personnel working there?
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What should fire department personnel avoid doing in relation to gas lines at a leak scene?
What should fire department personnel avoid doing in relation to gas lines at a leak scene?
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What should be monitored continuously when there is a leaking underground gas line?
What should be monitored continuously when there is a leaking underground gas line?
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When monitoring for gas leaks in dry conditions, what should be done with cracks in the soil?
When monitoring for gas leaks in dry conditions, what should be done with cracks in the soil?
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What is a specific action SFD personnel will not take during a gas leak situation?
What is a specific action SFD personnel will not take during a gas leak situation?
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In which situation should law enforcement be requested at the scene of a gas leak?
In which situation should law enforcement be requested at the scene of a gas leak?
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What should not be done with a cut gas line to prevent underground gas travel?
What should not be done with a cut gas line to prevent underground gas travel?
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If a natural gas leak is confirmed and the gas company has not been dispatched, what should be done?
If a natural gas leak is confirmed and the gas company has not been dispatched, what should be done?
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Which area should be effectively monitored if a gas leak is near a building?
Which area should be effectively monitored if a gas leak is near a building?
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What is the role of the Company Officer in relation to the content provided?
What is the role of the Company Officer in relation to the content provided?
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What protocol should be followed when personnel enter a building with suspected gas leaks?
What protocol should be followed when personnel enter a building with suspected gas leaks?
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What should be done regarding electrical sources in the event of a gas leak?
What should be done regarding electrical sources in the event of a gas leak?
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What should be done if gas monitors detect a leak inside a building?
What should be done if gas monitors detect a leak inside a building?
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When establishing zones at a gas leak site, which area is established to keep all unauthorized personnel away?
When establishing zones at a gas leak site, which area is established to keep all unauthorized personnel away?
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What is the role of the fire department once gas company personnel arrive at the scene?
What is the role of the fire department once gas company personnel arrive at the scene?
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What is the primary action that should be taken regarding air monitoring at a gas leak?
What is the primary action that should be taken regarding air monitoring at a gas leak?
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What is the recommended method of ventilation for buildings with gas accumulation?
What is the recommended method of ventilation for buildings with gas accumulation?
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What actions should the fire department avoid during a gas leak situation regarding gas-powered equipment?
What actions should the fire department avoid during a gas leak situation regarding gas-powered equipment?
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What is the main reason for establishing a hot zone during a natural gas leak incident?
What is the main reason for establishing a hot zone during a natural gas leak incident?
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What should be done immediately when a personnel member enters a hot zone with a suspected gas leak?
What should be done immediately when a personnel member enters a hot zone with a suspected gas leak?
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What is NOT a responsibility of the fire department once the gas company arrives?
What is NOT a responsibility of the fire department once the gas company arrives?
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Which action should never be taken by SFD personnel in relation to a gas leak?
Which action should never be taken by SFD personnel in relation to a gas leak?
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In what scenario is immediate evacuation of civilians deemed essential?
In what scenario is immediate evacuation of civilians deemed essential?
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Why is continuous air monitoring crucial in the hot zone?
Why is continuous air monitoring crucial in the hot zone?
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What is the initial action upon arrival at a suspected or confirmed gas leak?
What is the initial action upon arrival at a suspected or confirmed gas leak?
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Which of the following actions is recommended when a suspicious gas odor is detected?
Which of the following actions is recommended when a suspicious gas odor is detected?
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What should be done if a gas leak is confirmed and the gas company is not already responding to the scene?
What should be done if a gas leak is confirmed and the gas company is not already responding to the scene?
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What specific monitoring should be done in the area surrounding a leaking underground gas line?
What specific monitoring should be done in the area surrounding a leaking underground gas line?
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In dry conditions, what should be done regarding cracks in the soil when monitoring for gas leakage?
In dry conditions, what should be done regarding cracks in the soil when monitoring for gas leakage?
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What is a crucial action that should be avoided regarding a cut gas line in order to prevent the underground travel of gas?
What is a crucial action that should be avoided regarding a cut gas line in order to prevent the underground travel of gas?
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What role does law enforcement play when a gas line is cut and potentially causing road closures?
What role does law enforcement play when a gas line is cut and potentially causing road closures?
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When addressing a gas leak that is near a building, which area should be monitored aside from those directly involved?
When addressing a gas leak that is near a building, which area should be monitored aside from those directly involved?
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What should SFD personnel refrain from doing when dealing with a gas leak situation?
What should SFD personnel refrain from doing when dealing with a gas leak situation?
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What is the minimum number of personnel who should enter the hot zone to assess a situation?
What is the minimum number of personnel who should enter the hot zone to assess a situation?
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What should personnel consider when monitoring the atmosphere in a building for gas accumulation?
What should personnel consider when monitoring the atmosphere in a building for gas accumulation?
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What should be done in response to any readings on gas monitors inside a building?
What should be done in response to any readings on gas monitors inside a building?
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When gas company personnel arrive on scene, what is the fire department's role?
When gas company personnel arrive on scene, what is the fire department's role?
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What action should occur immediately upon detecting a gas leak in a building?
What action should occur immediately upon detecting a gas leak in a building?
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What is the recommended zone classification around a gas leak based on air monitoring results?
What is the recommended zone classification around a gas leak based on air monitoring results?
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In the case of a confirmed gas leak, what should isolation actions focus on?
In the case of a confirmed gas leak, what should isolation actions focus on?
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What should be adhered to when monitoring air for gas concentration levels?
What should be adhered to when monitoring air for gas concentration levels?
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What should be done with all gas-powered equipment during a gas leak event?
What should be done with all gas-powered equipment during a gas leak event?
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Study Notes
Natural Gas Leak Operations
- Immediate action: Air monitoring upon arrival for any suspected/confirmed gas leak.
- Personal Protective Equipment: SCBA mandatory in the hot zone.
- Evacuation: All civilians must leave potentially hazardous areas.
- Zone Establishment: Hot, warm, and cold zones must be established.
- Hot Zone: An area with at least 10% LEL (Lower Explosive Limit) gas concentration.
- Command: SFD maintains command for uncontrolled gas leaks.
- Gas Company Responsibility: Upon arrival, the gas company handles leak control.
- Building Procedures: Minimum personnel, continuous air monitoring, immediate evacuation if gas is detected.
- Cut Gas Lines: Air monitoring, life safety prioritised, zone establishment as above. SFD personnel cannot clamp gas lines.
- Air Monitoring: Personnel in the hot zone with a confirmed ignitable atmosphere should be continuously monitored and covered by a charged hose line.
- Building Entry: Minimum personnel entry, slow movement for accurate monitoring, evacuation if gas is detected.
- Building Isolation: Gas leaks within buildings must be isolated from their nearest non-hazardous point.
- Ignition Sources: Control/isolation of potential ignition sources when leaks can’t be immediately controlled.
- Ventilation: Natural ventilation should be used for buildings with gas accumulation, possibly assisted with positive pressure ventilation at a safe, monitored location.
- Gas-Powered Equipment: Do not attempt to place gas-powered equipment back into service, including relighting pilot lights.
- Underground Gas Lines: Continuous monitoring, monitoring of soil cracks, avoid placing soil on top of cut lines.
- Law Enforcement: Traffic control required for possible road closures when a cut gas line is involved.
Standard Operating Guideline
- SFD.085 standardizes response procedures for suspected and confirmed natural gas leaks.
- All personnel working in a suspected or confirmed gas leak hot zone should wear personal protective equipment including SCBA.
- All civilians should be evacuated from any area with a suspected or confirmed gas leak.
- A hot zone, warm zone, and cold zone should be established and maintained around any gas leak.
- The fire department should not leave the scene of a gas leak until they have determined the leak is controlled and the scene is safe.
Building Procedures
- All entries into buildings with suspected gas leaks should involve a minimum number of personnel to size up the situation and provide continuous air monitoring.
- Personnel movement inside the building should be slow to allow the monitors to accurately measure gas concentrations in the air.
- Any readings on gas monitors inside a building should trigger an immediate evacuation of the building.
- Confirmed gas leaks inside a building should be isolated from the closest possible isolation point in a non-hazardous area, if possible.
- Potential ignition sources, such as electrical service, should be controlled/isolated from a safe distance if the leak cannot be immediately controlled.
- Buildings with gas accumulation should be ventilated using natural ventilation and may be assisted with positive pressure ventilation operated in a monitored and safe location.
- Fire department personnel should not attempt to place any gas-powered equipment back into service including extinguished pilot lights.
Cut Gas Lines Procedures
- Upon arrival, immediately begin air monitoring to determine the area affected and the potential hazards to life and property.
- Immediately address any potential life safety issues.
- Establish hot, warm, and cold zones based on initial air monitoring.
- If a natural gas leak is confirmed, request the gas company to respond to the scene.
- If the gas leak is near a building, ensure that the building's interior is monitored, including the attic area.
- SFD personnel will not clamp gas lines.
- Law enforcement should be requested for traffic control when a cut gas line involves possible road closures.
- When an underground gas line is leaking, the area should be continually monitored.
- In dry conditions with visibly cracked soil, cracks in the soil should be monitored, as the gas can travel long distances through fissures.
- Soil should not be placed on top of a cut gas line as this can facilitate the underground travel of gas.
Incident Response
- Upon arrival at a suspected gas leak, fire personnel should immediately initiate air monitoring.
- All personnel operating within the "hot zone" must wear personal protective equipment, including SCBA, until the area is deemed safe through air monitoring.
- Civilians should be evacuated from any hazardous or potentially hazardous area or buildings during a suspected or confirmed gas leak.
- Fire personnel should establish and maintain a hot zone, warm zone, and cold zone around any gas leak. The hot zone encompasses areas with a gas accumulation of 10% LEL or greater.
- RIT (Rapid Intervention Team) should be established per SFD guidelines whenever a crew is within the hot zone.
- Incident commanders must consider deploying a charged hose line based on ignition hazards.
- Only a minimum number of personnel should enter the hot zone to assess the situation, determine the source of the leak, and, if possible, isolate the leak.
- SFD will establish and maintain command of all uncontrolled natural gas leaks within its territory and will communicate with all other agencies at the scene, including utility companies.
- When the gas company arrives, they assume responsibility for controlling the leak, while fire department personnel maintain overall command of the scene, provide assistance as needed, continue monitoring for gas, and ensure the safety of all personnel and property.
- Fire personnel should not leave the scene until they have determined that the leak is controlled, and the scene is safe.
Building Response
- All entries into buildings suspected of having gas leaks should involve the minimum number of personnel needed to assess the situation and provide continuous air monitoring. Personnel movement inside the building should be slow to allow monitors to accurately measure gas concentrations.
- Any gas readings on monitors inside a building should trigger an immediate evacuation.
- Confirmed gas leaks inside a building should be isolated from the closest possible isolation point in a non-hazardous area.
- Potential ignition sources, such as electrical service, should be controlled/isolated from a safe distance if the leak cannot be immediately controlled.
- Buildings with gas accumulation should be ventilated using natural ventilation and may be assisted with positive pressure ventilation operated in a monitored and safe location.
- Fire department personnel should not attempt to place any gas-powered equipment back into service, including extinguished pilot lights.
Cut Gas Line Response
- Upon arrival, immediately begin air monitoring to determine the affected area and potential hazards to life and property.
- Immediately address any potential life safety issues.
- Based on initial air monitoring, establish hot, warm, and cold zones.
- If a natural gas leak is confirmed, request the gas company respond to the scene if not already dispatched.
- If the gas leak is near a building, ensure that the building's interior is monitored, including the attic area.
- SFD personnel will not clamp gas lines.
- Law enforcement should be requested for traffic control whenever a cut gas line involves possible road closures.
- When an underground gas line is leaking, the area should be continually monitored.
- In dry conditions with visibly cracked soil, cracks in the soil should be monitored, as the gas can travel large distances through fissures.
- Soil should not be placed on top of a cut gas line as this can facilitate the underground travel of gas.
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Description
This quiz covers essential protocols for handling natural gas leak operations. It includes immediate actions, personal protective equipment, zone establishment, and responsibilities of the SFD and gas company. Understanding these procedures is critical for ensuring safety during hazardous situations.
