Exam (elaborations)
TEEX HAZMAT TECHNICIAN QUESTIONS AND ANSWERS 2024
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TEEX HAZMAT TECHNICIAN QUESTIONS AND ANSWERS 2024
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TEEX HAZMAT TECHNICIANLevel C PPE - ANSWERS-- Chemical Resistant Clothing
- Should be selected when the type of airborne substance is known, concentration
measured, & criteria for using Air-Purifying Respirator (APR)
- Provides the same level of skin protection as Level B, but lower respiratory
protection
- Full Face APR or PAPR
Level D PPE - ANSWERS-Work uniform
Provides no respiratory protection and minimal skin protection
SCBA (Self-contained breathing apparatus) - ANSWERS-Advantages:
- The highest level of protection
- Readily available
- No distance restriction
Disadvantages:
- Limited air supply
- Limited duration of work
- Added weight to the responder
Closed Circuit SCBA - ANSWERS-"Rebreather"
,- Exhaled air is recycled
- Usually lighter
Advantages:
- The highest level of protection
- No distance restriction
- Usually lighter than regular SCBA
- May have a longer operational duration
Limitations:
- Limited air supply
-Limited work duration
Risk of injury in flammable atmospheres or system failure because of the
presence of an oxidizer
Positive-Pressure Supplied Air Respirators (SAR) - ANSWERS-- Effective when
extended work times are required for entry, decon, or clean-up operations
Advantages:
- Longer working time
- Protects against contaminants and oxygen deficiency
- Not as heavy as SCBA
,Limitations:
- 300 ft hose travel distance
- Not IDLH approved
- Hose twists/tangle
- Must have an emergency egress system (5-10 minutes reserve air)
Air-Purifying Respirators (APR) - ANSWERS-- Removes particulates, gases, or
vapors from ambient air before its inhaled
- Filter is contaminant specific
- May be powered (PAPR) or nonpowered
- Oxygen environment must be 19.5% to filter contaminants
Advantages:
- Lighter than SCBA
- Longer travel time
- Enhanced movement
Limitations:
- Not IDLH or O2 deficient approved
- Limited filter life
- Cant be utilized initially at a HazMat/WMD scene
, Proximity Suits - ANSWERS-Designed for short duration and close proximity at
radiant heat temperatures
Advantages:
- Good for ARFF
- Withstands exposure to water and steam
Limitation:
- Not designed for chemical hazards
Fire Entry Suits - ANSWERS-Designed for protection during brief (<5 sec) entry
into a total flame environment
Advantages:
- Protection up to 3,000 F
- Withstands water and steam
Limitations:
- Not designed for rescue
- Doesn't protect from chemical hazard
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