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44 Cards in this Set

  • Front
  • Back
below what percentage of 02 do physical symptoms start to occur in body?
18 respiratory rate is increased
most dangerous fire gas
carbon monoxide
-accounts for more deaths than any other toxic product of combustion
1200ppm.
result of incomplete combustion?
carbon monoxide
how far smoke particles enter the lungs is affected by?
the size of the particle
what concentrations of carbon monoxide can be dangerous?
500ppm or five hundredths of one percent
-when level is above 1 percent unconsciousness and death can occure without physiological signs
hydrogen chloride comes from?
burning plastics, pvc, telephone and electrical cables
-pungent odor (plasticy smell)
hydrogen cyanide comes from?
burning furniture, rugs, rubber, nylon, wool
-bitter almond odor
-used in the gas chamber
-affects tissue respiration affecting 02 exchange at cellular level
50ppm
phosgene gas?
-burning refrigerants
-colorless with musty hay smell
-forms hydrochloric acid in the lungs
-300ppm idlh
4 components of open circuit breathing apparatus
facepeice
-air cylinder
-harness
-regulator
scba pressures and duration
2216-30 minutes
3000-30 or 45 minutes
4500- 30 or 60 minutes
remote gauge and cylinder gauge must be within?
100 psi
process for cleaning facepeice?
-wash
-sanitize in disinfectant 5 minutes
-rinse thoroughly
-air dry (exception for training)
hydro test dates and cylinder life
steel -every 5 yrs hydro, as long as passes hydro
composite- 3 yrs and discarded after 15 yrs
carbon or solid aluminum- hydro every 5 yrs, used as long as passes hydro
skip breathing
inhale normally, pause, inhale again and exhale
typical scba unit weighs?
25 to 35 lbs
daily inspection of scba
-bottle pressure
-valves in correct position
-low pressure alarm
-general condition of equipment
-user gauge in relation to cylinder gauge
-straps extended
sequence for filling air cylinder
-look in book
sequence for changing air cylinder
-place scba on firm surface
-close cylinder valve
-bleed air pressure from high and low pressure hoses
-disconnect the high pressure hose from coupling
-remvoe empty cylinder
-verify replacement is 90 to 100% full
-check cylinder valve and high pressure fitting for debris
-place new cylinder in backpack
-connect high pressure hose
-slowly and fully open cylinder valve and listen for audible alarm as system pressurizes
-check for leaks
secondary search
conducted after fire is under control and greatest hazards have been controlled, slower and more thourough to enure no occupants were overlooked during primary
if neighbor tells you no one is home do you beleive them
no
ff lost in structure
dont always move to lower level
during a search periodically do what?
stop and listen
air purifying respirator
contain normal levels of 02 but there air airborne particulates such as dust
low air alarm on scba sounds at
25 percent
when conducting search have what tools?
radio, tic (if available), flashlight, and forcible entry tools
how often shall PASS devices be tested?
daily
4 common respiratory hazards associated with fire
oxygen defeciency
-elevated temperatures
-smoke
-toxic atmospheres
limitations of wearer of scba
-physical-condition, agility, facial features
-medical factors-nuerological functioning, muscular/skeltal condition
cardio, respiratory function
-mental factors- adequate training, self confidence, emotional stability
limitations of scba equipment
limited vis
-decreased ability to communicate
-increased weight
-decreased mobility
limitations of air supply
-physical condition of user
-degree of physical exertion
-emotional stability of user
-condition of apparatus
-cylinde pressure before use
-training and experience of user
closed circuit scba
exhaled air stays within system and is reused
(shipboard operations, and extended hazmats)
ways to prevent fogging of mask
use a nosecup (deflects air away from lens
-apply antifogging chemical
supplied air respirators
travel up 300 ft connected to air supply by hose
-also has 5 to 10 minute emergency egress cylinder
annual inspection and maintenance
done by factory certified technicians, done in accordance with manufacturer recommendations, dissembel apparatus and conduct test using specialized tools
why is crawling beneficial with limted visibilty
may get belwo thermal layer and increase visibility, crawling increase safety by allowing ff to feel floor in front of them with tool as they move along
rescue v extrication
rescue-removal of victims involved in entrapment by fires, terrain features, confined spaces, or any others not an extrication

-extrication=incidents involve disentanglement and removal of victims from vehicles or machinery
primary search
-rapid but thorough search performed before or during fire suppression operations
-performed asap when probability structure is occupied
-often under adverse conditions
during primary search do we always use buddy system?
yes teams of 2 or more
during primary search it is important too?
inform ic of negative and postive information
most critical areas in multistory building to search
-fire floor
-floor above fire floor
-top floor
-then search other floors
osha and nfpa 1500 require ric be standing by whenever ff are in hazard zone inside burning building?
true
ric composed of
2 firefighters suitably equipped to enter and locate ff in distress
rescuers searching for ff in distress should first try?
to establish radio contact
removing located ff
one study found as many as 12 ff were needed to successfully move one downed ff and it took up to 20 minutes