8 PPE Flashcards
What is the most significant route of entry for hazmat and the protection used for it
Respiratory entry. Scba
Ppe may include anything from
Structural gear, chem suits, body armor
Basic types of breathing apparatus
Scba Closed circuit Open Supplied air respirators SAR air purifying respirators. APR particulate removing Vapor and gas removing Combination Powered air purifying respirators PAPRs
Most important piece of Ppe
Scba
Only Scba type allowed in hazmat
Open or closed circuit positive pressure
Disadvantages of Scba
Weight Limited supply and time Change in profile, hider mobility Limited vision and fog Limited communication unless mic installed
Air source not carried, face piece, belt or face regulator, comm system, up to 300’ hose, emergency escape lack or breathing support system.
Supplied air respirator SAR
5-15 min of escape air incase of SAR hose damage
Small portable tank
SAR emergency breathing support system EBSS
Filter canister or cartridge, removes specific contaminants. May be powered or not, don’t supply oxygen or stored air
Air purifying respirators
Air purifying respirators that will not protect against chem bio radio
Half face APR
Material compound or system that holds contaminants by absorbing
Sorbent
Catalyst
Substance that effects rate of chem reaction with other substances
No single canister, filter or cartridge can protect against all chem hazard. Therefore
The material involved must be known and right respirator element selected for it.
APR limitations
Limited life of canisters
Need for atmosphere monitoring
Normal oxygen content in air required
Precautions for APR usage
Know chemical or substance involved
Know concentration of substance in air
O2 between 19.5-23.5%
atmosphere below IDLH conditions
Three categories of particulate removing filters
N non oil resistant
R resistant to oil
P use for oil or non oil lubricants present
Dust masks are limited protection and can’t be used for
Chem hazards, small particles like asbestos
Powered air purifying respirators use what to filter
Blower to pass outside air through canister and provide positive pressure for full face piece
Chemicals may be absorbed into tourn out gear and cause
Repeated exposure to the wearer or reaction to another chemical at a later time. Might need replacing.
High temperature ppe
Protect from high temp and short exposure, heat exceeds standard structural ppe.
Proximity suits
Close approach to fire, aircraft, flammable liquids, shiny outside
Fire entry suits
Work in total flame environments for short time. As high as 2000f. Not interchangeable, specific use.
Limitations of high temp ppe
Heat stress to wearer, bulky, Reduced mobility and vision Limited communication Request training and use for proficiency Expensive Limited exposure time
Chemical protective clothing
CPC, not one suit for all. Chem and bio protection. Most are impermeable to moisture. Must be Deconed
Two types of chemical protective clothing. CPC
Splash
Vapor protective
Liquid splash clothing
Encapsulating or non. Liquid splash. It not vapor or gas, nfpa 1992
Encapsulating suit
One piece, specified splash or vapor