Respirator Type |
Comments |
Air-purifying respirator (APR)1
- Disposable
- Half mask
- Negative-pressure
-
Assigned Protection Factor (APF): 10
-
Fit Testing Required?
Yes
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Air-purifying respirator (APR), disposable
Key Features
-
Usually half mask, negative-pressure particulate
respirator
-
Inspiratory effort of wearer draws air through filter
-
Filter comprises all or a significant portion of the
facepiece
-
Airborne particles removed as inspired air passes
through filter
-
NIOSH-certified CBRN air-purifying respirators
with HEPA or
P-100 filters provide
the minimum acceptable level of protection against
inhalation of particles for personnel working in
environments likely to be contaminated with
radioactive materials
Advantages
- Light weight
- Does not restrict mobility
- Low cost (compared to other respirators)
Disadvantages
-
Does not supply oxygen (cannot be used in low oxygen
environments)
-
May only be used when air contaminant level is below
the concentration limits of the filter
- Fit testing required
- Some contaminated air will leak into facepiece
-
Half mask models do not provide adequate eye
protection
- Full facepiece models may fog up during use
- Communication can be difficult
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Air-purifying respirator (APR)1
- Reusable
- Elastomeric
- Half mask
- Negative-pressure
-
Assigned Protection Factor (APF): 10
-
Fit Testing Required?
Yes
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Air-purifying respirator (APR), reusable
Key Features
- Elastic facepiece worn over mouth and nose
-
Inspiratory effort of wearer draws ambient air through
filter(s) before air is inhaled
-
Provides increased protection when used with filters,
cartridges, or canisters that remove specific
contaminants
Advantages
- Comparatively light weight
- Does not restrict mobility
-
Relatively low cost (compared to other respirators)
Disadvantages
-
Does not supply oxygen (cannot be used in low oxygen
environments)
-
May only be used when air contaminant level is below
the concentration limits of the filter(s)
- Fit testing required
- Some contaminated air can leak into facepiece
-
Half mask models do not provide adequate eye
protection
- Communication can be difficult
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Air-purifying respirator (APR)1
- Reusable
- Elastomeric
- Full facepiece
- Negative-pressure
-
Assigned Protection Factor (APF): 50
-
Fit Testing Required?
Yes
|
Air-purifying respirator (APR), reusable
Key Features
- Elastic facepiece covers entire face
-
Inspiratory effort of wearer draws ambient air through
filter(s) before air is inhaled
-
Provides increased protection when used with filters,
cartridges, or canisters that remove specific
contaminants
Advantages
- Comparatively light weight
- Does not restrict mobility
- Provides both respiratory and eye protection
Disadvantages
-
Does not supply oxygen (cannot be used in low oxygen
environments)
-
May only be used when air contaminant level is below
the concentration limits of the filter(s)
- Fit testing required
- Some contaminated air can leak into facepiece
- Communication can be difficult
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Powered air-purifying respirator (PAPR)1
- Loose-fitting
-
Assigned Protection Factor (APF): 25
-
Fit Testing Required? No
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Powered air-purifying respirator (PAPR)
Key Features
-
Battery powered blower forces contaminated ambient air
through air-purifying filters
-
Purified air delivered under positive-pressure to
facepiece mask, helmet, or hood
-
Worn when disposable and reusable half mask
negative-pressure air-purifying respirators do not
provide adequate protection
Advantages
-
Provides greater protection than non-powered
negative-pressure air-purifying respirators
-
More comfortable to wear and to breathe compared to
non-powered negative-pressure air-purifying
respirators
-
Air delivery to facepiece mask, helmet, or hood
ensures that leakage of contaminated air is usually
outward
- Fit testing not required
-
Various chemical cartridges or canisters available to
eliminate chemicals including organic vapors and acid
gases
- Provides both respiratory and eye protection
Disadvantages
- Bulky and noisy
- Battery dependent
-
Is not a true positive-pressure device (i.e., some
leakage of contaminated air into facepiece mask,
helmet, or hood can occur)
- Communication can be difficult
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Powered air-purifying respirator (PAPR)1
- Hooded
-
Assigned Protection Factor (APF): 25
-
Fit Testing Required? No
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Powered air-purifying respirator (PAPR)
Key Features
-
Battery powered blower forces contaminated ambient air
through air-purifying filters
-
Purified air delivered under positive-pressure to
facepiece mask, helmet, or hood
-
Worn when disposable and reusable half mask
negative-pressure air-purifying respirators do not
provide adequate protection
Advantages
-
Provides greater protection than non-powered
negative-pressure air-purifying respirators
-
More comfortable to wear and to breathe compared to
non-powered negative-pressure air-purifying
respirators
-
Air delivery to facepiece mask, helmet, or hood
ensures that leakage of contaminated air is usually
outward
- Fit testing not required
-
Various chemical cartridges or canisters available to
eliminate chemicals including organic vapors and acid
gases
- Provides both respiratory and eye protection
Disadvantages
- Bulky and noisy
- Battery dependent
-
Is not a true positive-pressure device (i.e., some
leakage of contaminated air into facepiece mask,
helmet, or hood can occur)
- Communication can be difficult
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Supplied-air respirator (SAR)1
- Full facepiece
-
Assigned Protection Factor (APF): 1,000
-
Fit Testing Required?
Yes
Auxiliary escape respirator1
-
Assigned Protection Factor (APF): 10,000 (when used in "escape" mode)
-
Fit Testing Required?
Yes
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Supplied-air respirator (SAR)
Key Features
-
Compressed air delivered from a stationary source
(located away from contaminated area) to a half or
full facepiece mask via a hose
-
Worn when negative-pressure and powered air-purifying
respirators do not provide adequate protection
Advantages
- Provides high level respiratory protection
-
Provides positive pressure to mask so almost all
leakage is outward
-
Less bulky and can be used for longer periods than
self-contained breathing apparatus
- May be easier for hospital personnel to use
- Provides both respiratory and eye protection
Disadvantages
- Length of air hose may limit mobility
- Air hose may be a trip hazard
- Clean source of breathing air required
- Fit testing required
-
Immediately operable emergency escape respirator,
escape hood, or escape mask is required
- Communication can be difficult
Auxiliary escape respirator, escape hood, or escape
mask
Key Features
-
Carried or worn in case of SAR failure
-
Protects wearer from breathing harmful gases, vapors,
fumes, and dusts for a limited amount of time in
emergency situations
-
Can be designed as an air-purifying escape respirator
(APER) or a self-contained breathing apparatus (SCBA)
type respirator
-
APERs have a filter canister mounted on a hood to
filter contaminants before air is inhaled
-
SCBA type escape respirators have an attached source
of breathing air and a hood that provides a barrier
against contaminated outside air
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Self-contained breathing apparatus (SCBA)1
- Full facepiece
-
Assigned Protection Factor (APF): 10,000
(in pressure demand mode)
-
Fit Testing Required?
Yes
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Self Contained Breathing Apparatus (SCBA)
Key Features
-
Provides very pure, dry compressed air to full
facepiece mask via a hose
- Air is exhaled to environment
-
By law, must be worn whenever entering environments
immediately dangerous to life and health (IDLH)
or when information is inadequate to rule out IDLH
atmosphere
Advantages
-
Provides highest level of respiratory protection
-
Several different types available depending on need
- Improved mobility over Supplied-Air Respirators
- Provides both respiratory and eye protection
Disadvantages
- Heavy to wear
- Limited oxygen supply limits duration of use
- Fit testing required
- Communication can be difficult
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