Podcast
Questions and Answers
What is the primary reason for not operating electrical equipment during a gas leak in an enclosure?
What is the primary reason for not operating electrical equipment during a gas leak in an enclosure?
- It can lead to a power outage.
- It could create a dangerous spark. (correct)
- It may worsen the leak.
- Electrical equipment is ineffective in such situations.
Which factor is essential when considering evacuation measures for a gas leak incident?
Which factor is essential when considering evacuation measures for a gas leak incident?
- The size or magnitude of the incident. (correct)
- The smell of gas.
- The time of day.
- The number of occupants in the building.
Why is it important to vent structures with gas accumulation?
Why is it important to vent structures with gas accumulation?
- To ensure proper heating and air conditioning.
- To prevent dangerous gas concentrations. (correct)
- To reduce the likelihood of explosions.
- To increase the pressure inside.
What is the primary characteristic of LPG compared to natural gas?
What is the primary characteristic of LPG compared to natural gas?
What is the recommended source control action for gas leaks in homes?
What is the recommended source control action for gas leaks in homes?
When should a fire department consider using Hazmat or calling ONG during a gas leak incident?
When should a fire department consider using Hazmat or calling ONG during a gas leak incident?
What is a crucial method for initiating positive pressure ventilation (PPV) for gas leaks?
What is a crucial method for initiating positive pressure ventilation (PPV) for gas leaks?
What action is NOT recommended when a gas leak is detected?
What action is NOT recommended when a gas leak is detected?
What is the first course of action for firefighters at a natural gas leak with fire?
What is the first course of action for firefighters at a natural gas leak with fire?
When considering an LPG incident, which factor is most critical for decision-making?
When considering an LPG incident, which factor is most critical for decision-making?
What is the recommended minimum flow rate of water to cool a single exposed cylinder?
What is the recommended minimum flow rate of water to cool a single exposed cylinder?
What approach should firefighters take when positioning themselves relative to horizontal tanks in LPG incidents?
What approach should firefighters take when positioning themselves relative to horizontal tanks in LPG incidents?
Why is a exterior fire from a natural gas leak often considered safer?
Why is a exterior fire from a natural gas leak often considered safer?
What equipment consideration is mentioned for dealing with LPG incidents?
What equipment consideration is mentioned for dealing with LPG incidents?
What should be avoided when responding to exposed and venting cylinders?
What should be avoided when responding to exposed and venting cylinders?
What indicates the amount of product left in an LPG cylinder during an incident?
What indicates the amount of product left in an LPG cylinder during an incident?
When a leak from a line or cylinder is on the exterior of a structure what may be used to disperse vapors?
When a leak from a line or cylinder is on the exterior of a structure what may be used to disperse vapors?
On an LPG or other container containing gas fire the IC must make a judgement based on the magnitude of the incident, _____ of fire exposure and life safety exposure
On an LPG or other container containing gas fire the IC must make a judgement based on the magnitude of the incident, _____ of fire exposure and life safety exposure
Always set up on the ____ of horizontal tanks
Always set up on the ____ of horizontal tanks
If you choose to cool down the tank you must use a minimum of ___ gpm. Multiple cylinders will require substantially more
If you choose to cool down the tank you must use a minimum of ___ gpm. Multiple cylinders will require substantially more
Flashcards
Gas Behavior
Gas Behavior
Natural gas is lighter than air and ascends rapidly, while LPG is heavier and settles in low areas.
Gas Leak Safety
Gas Leak Safety
Avoid operating electrical equipment in areas with gas leaks to prevent ignition.
ERG for Gas Incidents
ERG for Gas Incidents
The Emergency Response Guide (ERG) provides guidance on safe distances during large-scale incidents.
Common Gas Leak Causes
Common Gas Leak Causes
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Gas Leak Assistance
Gas Leak Assistance
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Ventilation for Gas Leaks
Ventilation for Gas Leaks
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PPV for Gas Leaks
PPV for Gas Leaks
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Vapor Dispersion with Fog Streams
Vapor Dispersion with Fog Streams
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Firefighter Response to Gas Leaks
Firefighter Response to Gas Leaks
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LPG and Cylinder Gas Incidents
LPG and Cylinder Gas Incidents
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Incident Assessment for LPG
Incident Assessment for LPG
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TICs for LPG Incidents
TICs for LPG Incidents
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Safety Zones for LPG Cylinders
Safety Zones for LPG Cylinders
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Cooling LPG Cylinders
Cooling LPG Cylinders
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Cooling LPG Cylinders Techniques
Cooling LPG Cylinders Techniques
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Fire vs. Gas Leak
Fire vs. Gas Leak
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Fog Streams for Gas Leak Fires
Fog Streams for Gas Leak Fires
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Study Notes
Natural Gas & LPG Response
- Gas leaks can range from minor issues like a "smell of gas" in residences to significant hazards like a high-pressure gas main rupture.
- Natural gas is lighter than air and ascends rapidly, while LPG is heavier and settles in low areas.
- Avoid operating light switches or electrical equipment in regions with gas leaks to prevent ignition.
Evacuation and Shelter-In-Place
- Evacuation or sheltering decisions must consider the incident's size and severity.
- Consult the Emergency Response Guide (ERG) for safe distance measures during large-scale incidents.
Locate and Control Source
- Common causes of gas leaks in homes include malfunctioning appliances or improper installations.
- Residents should be advised to have qualified professionals repair any faulty appliances.
- If the leak source is undetectable or unmanageable, call ONG for support.
- The Incident Commander (IC) may involve Hazmat teams for assistance.
Ventilation
- Venting structures is critical to dispersing gas pockets, which can be flammable.
- Use Positive Pressure Ventilation (PPV) from an upwind position to prevent ignition hazards.
- Electric PPV fans and smoke ejectors are intrinsically safe and suitable for use in gas-rich environments.
Vapor Dispersion
- Fog streams can effectively disperse vapors when leaks occur outside buildings, reducing flammability risks.
Fire and Explosion Response
- For exterior fires caused by natural gas leaks, firefighters should protect exposures and allow ONG to handle the leak.
- Leaks accompanied by fire are often safer than those without, due to the natural dissipation of gas.
- Firefighters may use fog streams to advance toward the source when conditions permit.
LPG and Cylinder Gas Incidents
- Incidents involving LPG and gas cylinders require heightened awareness of the potential for cylinder rupture or BLEVE.
- Assess the incident's severity, fire exposure duration, and life safety risks to inform Incident Commander decisions.
- Use Thermal Imaging Cameras (TICs) and check for cold lines on cylinders to estimate the remaining gas reserves.
- Establish a staging area next to the sides of horizontal tanks and avoid positioning directly in front of the cylinders.
- When cooling cylinders, apply at least 500 gallons per minute for single units, with a more substantial flow for multiple cylinders.
- Opt for unmanned deck guns or master streams when cooling is necessary; direct firefighter access to venting cylinders is highly discouraged for safety.
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Description
This quiz covers Section 300 of the Tulsa Fire Department's Emergency Operating Guidelines, focusing on strategic and tactical considerations for responding to natural gas and LPG leaks. Participants will learn about the properties of these gases and effective response strategies to ensure safety and efficiency during emergencies.
