DEFINITIONS Flashcards
Medium Fire Situation:
Indicates a fire which may be extinguished with the operation of two (2) hoselines. Fire may involve the structure, contents or both. When describing a fire as Medium Fire Situation, include a quantitative description of the fire: Location, volume and direction of travel of fire.
Light Fire Situation:
Indicates a fire which can be extinguished with the operation of one (1) hoseline or hand extinguishers. It includes fire that can be readily extinguished without resorting to extinguishing agents.
Heavy Fire Situation:
Indicates a fire that will require the operation of more than two (2) hoselines to extinguish the fire or requires the use of hoselines in conjunction with the use of heavy appliances. When describing a fire as a Heavy Fire Situation, include a quantitative description of the fire: Location, volume, and direction of travel.
CLASS 1
FIREPROOF
CLASS 2
FIRE RESISTIVE
CLASS 3
NON-FIRE PROOF
CLASS 4
WOOD FRAME
CLASS 5
METAL
CLASS 6
HEAVY TIMBER
Rip Tides or Currents -
occur when the tide is going out. Rip currents are the primary source of distress in drowning victims.
LIGHT FIRE SITUATION
Light Fire Situation - Indicates a fire which can be extinguished with the operation of one hand line and/or hand extinguishers or those that can be readily extinguished without resorting to extinguishing agents.
MEDIUM FIRE SITUATION
Medium Fire Situation - Indicates a fire which may be extinguished with the operation of two handlines.
IMMEDIATE SUPERVISION
- MEMBER WITHIN VISUAL OR VOICE CONTACT OF OFFICER
- MEMBER WORKING WITH SEARCH LINE OR HOSELINE THAT IS UNDER SUPERVISION OF OFFICER
Medium Fire Situation:
Indicates a fire which may be extinguished with the operation of two (2) hoselines. Fire may involve the structure, contents or both. When describing a fire as Medium Fire Situation, include a quantitative description of the fire: Location, volume and direction of travel of fire.
TRAILERS:
Trailers: Material arranged to spread fire from its point of origin to other areas of an occupancy. (Cotton waste, rags, paper, fluids, excelsior, waste film and others.)
PLANTS:
Plants: Material arranged to start and feed initial fire. (Candles, matches, electrical, mechanical, chemicals and others.)
ACCELERANTS:
Accelerants: Gasoline, kerosene, turpentine, alcohol, paint thinner, cut or disconnect gas lines etc.
IGNITION DEVICE:
Ignition Device: Mechanical, chemical, or electrical means used to initiate a fire.
PROTECTED AREA:
Protected Area: The clean or unburned area left by stock, furniture, contents, etc. covering shelves, floors, or other combustible areas.
Flow Path
FLOW PATH - is the movement of heat and smoke from the higher air pressure within the fire area to all other lower air pressure areas both inside and outside of a fire building
Heat Release Rate
HEAT RELEASE RATE - is the rate at which energy (heat) is released by the burning of a fuel and oxygen mixture
Ventilation Limited Fire
Ventilation Limited Fire - is a fire in which the heat release rate or growth of the fire is being slowed because the fire is consuming the available oxygen and no new oxygen is entering the fire area.
FOWPATH
The term Flow Path describes the movement of fire, heat and smoke from an area of high pressure (the fire area) to an area of low pressure (all areas other than the fire area).
CATENARY WIRES
CATENARY WIRES – Overhead electrical wires delivering approximately 12,000 (12KV) volts of alternating current (AC). These lines retain residual static electricity after the power source has been disconnected. The removal of this residual electricity requires the railroad to have a Class “A” employee (A Man) ground the catenary on the tracks/tunnel circuit where power removal was requested by the Incident Commander (IC).