7.3.4 Combustible Or Flammable Gas Incidents Flashcards
(20 cards)
What is the purpose of the SOG for combustible or flammable gas incidents?
To establish best practices for members during flammable gas emergencies.
Who does the SOG for combustible or flammable gas incidents pertain to?
All members of the Newport Fire/EMS Department that respond to a flammable gas emergency.
What is Natural Gas (NG)?
A gas that issues from the earth’s crust, a combustible mixture of methane and other hydrocarbons.
What is Liquefied Petroleum Gas (LP)?
A compressed gas that consists of flammable hydrocarbons (propane and butane) used as fuel or raw material.
What is the Lower Explosive Limit (LEL)?
The lowest percentage of gas in the air capable of producing a flash fire.
What is the Upper Explosive Limit (UEL)?
The highest percentage of gas in the air capable of producing a flash fire.
What does IDLH stand for?
Immediately Dangerous to Life or Health.
What should the Incident Commander do during a flammable gas emergency?
Protect the public, firefighters, and other first responders from hazards to prevent unnecessary risk, injury, or death.
What are the characteristics of Natural Gas (NG)?
Lighter than air, flammable range: LEL 5.3% - UEL 14%, colorless and odorless until Mercaptan is added.
What are the characteristics of Liquefied Petroleum Gas (LP)?
Heavier than air, flammable range: LEL 1.9% - UEL 8.5%, colorless and odorless until Mercaptan is added.
What is required for personnel operating at a gas leak incident?
Full PPE shall be worn by all personnel.
How far should apparatus be positioned from a suspected leak source?
At least 150 feet, considering underground sources.
What is required before entering a hazardous area?
A minimum of two personnel dressed in PPE shall be on scene.
What should be done if an IDLH environment is found?
A minimum of a two-person RIC crew shall be staged outside.
What should be used by personnel entering a building where a leak is found?
A proper functioning Combustible Gas Detector (CGD).
What should personnel eliminate when responding to a gas leak?
All sources of ignition, including turning off cellphones and non-intrinsically safe devices.
What should be done if gas to the building can be turned off from outside?
It shall be done immediately, with care to avoid sparking.
When should ventilation be conducted?
Ventilation shall not be conducted until the area is found to be either under the LEL or over the UEL.
What should be done if the building is deemed unsafe for fire personnel to enter?
Residents shall be evacuated, and a perimeter shall be established.
What is the emergency responder contact telephone number?
1-800-310-6346
