Truck Company Ch 7 and 10 Flashcards
Any of several petroleum products, such as propane or butane, stored under pressure as a liquid.
Liquefied Petroleum Gas (LPG)
Rapid vaporization of a liquid stored under pressure upon release to the major failure of its containing vessel; failure is the result of over pressurization caused by an external heat source, which causes the vessel to explode into two or more pieces when the temperature of the liquid is well above its boiling point at normal atmospheric pressure.
Boiling Liquid Expanding Vapor Explosion (BLEVE)
Device that indicates the explosive levels of combustible gases.
Combustible Gas Indicator (CGI)
System of barriers surrounding designated areas at emergency scenes intended to limit the number of persons exposed to the hazard, and to facilitate its mitigation. At a major incident there will be three zones —- restricted (hot), Limited access (warm), and support (cold)
Control Zone
Lowest percentage of fuel/oxygen mixture required to support combustion. Any mixture with a lower percentage would be considered too lean to burn
Lower Explosive Limit (LEL)
Cancer producing substance
Carcinogen
An abnormal, low-resistance path between conductors that allows a high current flow that normally lead to an overcurrent condition.
Short Circuit
Signal given to the incident commander that a specific area has been checked for victims and none have been found or all found victims have been extricated from entrapment
All Clear
Weight of the structure, structural members, building components and any other feature permanently attached to the building that is constant and immobile. Load on a structure due to its own weight and other fixed weights.
Dead Load
Safety procedure used in rescue work. when rescuers work in a hazardous area at least two rescuers must remain in contact with each other at all times.
Buddy System
A steel or aluminum D-shaped snap link device for attaching components of rope rescue systems together
Carabiner
Having occupants remain in a structure or a vehicle in order to provide protection from a rapidly approaching hazard (fire, hazardous gas cloud,)
Shelter in Place
Any commonly encountered gas such as carbon monoxide in fires, whose concentration can be measured. In the absence of devices capable of measuring the concentrations of other gases present, the CO measurements may be assumed to indicate their concentrations as well
Index Gas
International distress signal broadcast by voice
Mayday
Portable device that allows two or more persons to carry the sick or injured while keeping the patient immobile
Litter
All clear
Dead load
