8 - IFSTA Hazardous Materials for First
Responders Chapter 8 Question with
complete solution 2023
Respiratory protection - correct answer Is a primary concern for first responders
because inhalation is arguably the most significant route of entry for hazmat.
The basic types of protective breathing equipment used by responders at hazmat /
WMD incidents - correct answer • SCBA open / close
• supplied air respirator (SAR)
• air purifying respirators (APR)
• powered air purifying respirators (PAPRs)
Advantages of using SCBA - correct answer Independence, maneuverability, &
protection from toxic and/or asphyxiating atmospheres
Disadvantages of SCBA - correct answer • weight of units
• Limited air supply duration
• change in profile that may hinder mobility because of configuration of harness
assembly & location of air cylinder
• Limited communications if facepiece is not equipped with a microphone or speaking
diagram
supplied air respirator (SAR) or airline respirator - correct answer Atmosphere
supplying respirator where the user does not carry the breathing air source. Apparatus
used consist of a face piece, a belt or facepiece mounted regulator, the voice
communication system, up to 300 feet of air supply hose, in emergency escape pack or
EBSS emergency breathing support system, and a breathing air source either cylinders
mounted on a card or a portable breathing air compressor.
Because of the potential for damage to the air supply hose, the EBSS provides enough
air, usually blank, blank, or blank worth, - correct answer 5, 10, or 15 minutes worth
sar apparatus - correct answer Are not certified for firefighting operations because of
potential damage to airline from heat, fire, or debris
Air purifying respirators Apr - correct answer Contain an air purifying filter, canister, or
cartridge that removes the specific contaminants found in ambient air as it passes
through the air purifying element
Based on which cartridge, canister, or filter is being used, these purifying elements are
generally divided into the following three types - correct answer Particulate removing
APRs
, Vapor & gas removing APRs
Combination particle removing and vapor & gas removing APRs
Half face respirators will NOT protect against CBR materials that can be absorbed
through the skin or eyes and therefore are not recommended for use at hazmat / WMD
incidents except in very specific situations - correct answer Explosive attacks where
the primary hazard is dust or particulates
No single canister, filter, or cartridge protects against all chemical hazards. - correct
answer Responders must know the hazards present in atmosphere in order to select
appropriate canister, filter, or cartridge
Responders should know that APRs do not protect against oxygen-deficient or oxygen-
enriched atmospheres, - correct answer They must not be used in situations where
atmosphere is immediately dangerous to Life & health.
Three primary limitations of an APR are as follows - correct answer • limited life of its
filters & canisters
• need for constant monitoring of contaminated atmosphere
• need for normal oxygen content of atmosphere before use
Take following precautions before using APRs - correct answer • know what
chemicals / air contaminants are in the air.
• know how much of chemicals / air contaminants are in the air.
• ensure that oxygen level is between 19.5 and 23.5%
• ensure that atmospheric hazards are below IDLH conditions.
Particulate removing filters - correct answer Protect the user from particulates
including biological hazards in the air. These filters may be used with half or full face
piece mask. Protection must be provided when full facepiece mask is not worn
Following three categories of filter degradation indicate the use limitations of the filter -
correct answer N - not resistant to oil
R- resistant to oil
P- used when oil or non oil lubricants are present
Dust masks - correct answer Provide very limited protection and should not be used to
protect against chemical hazards or small particles such as asbestos fibers
Vapor and gas removing filters - correct answer Designed to protect against specific
vapors and gases.
Individual cartridges and canisters are usually designed to protect against related
groups of chemicals such as - correct answer Organic vapors or acid gases.
Responders Chapter 8 Question with
complete solution 2023
Respiratory protection - correct answer Is a primary concern for first responders
because inhalation is arguably the most significant route of entry for hazmat.
The basic types of protective breathing equipment used by responders at hazmat /
WMD incidents - correct answer • SCBA open / close
• supplied air respirator (SAR)
• air purifying respirators (APR)
• powered air purifying respirators (PAPRs)
Advantages of using SCBA - correct answer Independence, maneuverability, &
protection from toxic and/or asphyxiating atmospheres
Disadvantages of SCBA - correct answer • weight of units
• Limited air supply duration
• change in profile that may hinder mobility because of configuration of harness
assembly & location of air cylinder
• Limited communications if facepiece is not equipped with a microphone or speaking
diagram
supplied air respirator (SAR) or airline respirator - correct answer Atmosphere
supplying respirator where the user does not carry the breathing air source. Apparatus
used consist of a face piece, a belt or facepiece mounted regulator, the voice
communication system, up to 300 feet of air supply hose, in emergency escape pack or
EBSS emergency breathing support system, and a breathing air source either cylinders
mounted on a card or a portable breathing air compressor.
Because of the potential for damage to the air supply hose, the EBSS provides enough
air, usually blank, blank, or blank worth, - correct answer 5, 10, or 15 minutes worth
sar apparatus - correct answer Are not certified for firefighting operations because of
potential damage to airline from heat, fire, or debris
Air purifying respirators Apr - correct answer Contain an air purifying filter, canister, or
cartridge that removes the specific contaminants found in ambient air as it passes
through the air purifying element
Based on which cartridge, canister, or filter is being used, these purifying elements are
generally divided into the following three types - correct answer Particulate removing
APRs
, Vapor & gas removing APRs
Combination particle removing and vapor & gas removing APRs
Half face respirators will NOT protect against CBR materials that can be absorbed
through the skin or eyes and therefore are not recommended for use at hazmat / WMD
incidents except in very specific situations - correct answer Explosive attacks where
the primary hazard is dust or particulates
No single canister, filter, or cartridge protects against all chemical hazards. - correct
answer Responders must know the hazards present in atmosphere in order to select
appropriate canister, filter, or cartridge
Responders should know that APRs do not protect against oxygen-deficient or oxygen-
enriched atmospheres, - correct answer They must not be used in situations where
atmosphere is immediately dangerous to Life & health.
Three primary limitations of an APR are as follows - correct answer • limited life of its
filters & canisters
• need for constant monitoring of contaminated atmosphere
• need for normal oxygen content of atmosphere before use
Take following precautions before using APRs - correct answer • know what
chemicals / air contaminants are in the air.
• know how much of chemicals / air contaminants are in the air.
• ensure that oxygen level is between 19.5 and 23.5%
• ensure that atmospheric hazards are below IDLH conditions.
Particulate removing filters - correct answer Protect the user from particulates
including biological hazards in the air. These filters may be used with half or full face
piece mask. Protection must be provided when full facepiece mask is not worn
Following three categories of filter degradation indicate the use limitations of the filter -
correct answer N - not resistant to oil
R- resistant to oil
P- used when oil or non oil lubricants are present
Dust masks - correct answer Provide very limited protection and should not be used to
protect against chemical hazards or small particles such as asbestos fibers
Vapor and gas removing filters - correct answer Designed to protect against specific
vapors and gases.
Individual cartridges and canisters are usually designed to protect against related
groups of chemicals such as - correct answer Organic vapors or acid gases.
