HAZWOPER 40: Lesson 7 Quiz
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The two main types of positive-pressure respirators are
Continuous flow
pressure-demand and:
The assembly that has been approved by MSHA and
NIOSH to protect against organic vapors is tested against
only a single challenge substance. That substance is:
Two types of fit tests can be performed. The first is a qual-
itative fir test, which exposes the wearer to irritants (stan-
nic chloride) or substances that have distinctive odors or
tastes. The second type of test is the:
Cartridges usually attach directly to the respirator
face-piece. The larger volume canisters attach to the chin
A breathing tube
of the face-piece or are carried with a harness and at-
tached to the face-piece by:
The Assigned Protection Factor (APF) is determined ex-
Exhalation valve leakage
perimentally by measuring face-piece seal and:
Air-purifying respirators have limited use at hazardous
waster sites and can be used only when the ambient
19.5
atmosphere contains sufficient oxygen that is greater than
(blank) percent.
The main disadvantage of negative-pressure respirators Draws contaminated air into the face-piece during inhala-
is that, if any leaks develop, the user: tion
A SAR is NOT recommended for entry into IDLH atmos-
An escape SCBA
pheres unless the apparatus is equipped with:
The combination system provides up to 60 minutes of
self-contained air, whereas the escape SCBA contains 5 minutes
much less air, generally for how many minutes?
In which type of respirator, is exhaled air recycled by
Closed-circuit SCBA
removing the carbon dioxide with an alkaline scrubber
1/2
Study online at https://quizlet.com/_7ggfo9
The two main types of positive-pressure respirators are
Continuous flow
pressure-demand and:
The assembly that has been approved by MSHA and
NIOSH to protect against organic vapors is tested against
only a single challenge substance. That substance is:
Two types of fit tests can be performed. The first is a qual-
itative fir test, which exposes the wearer to irritants (stan-
nic chloride) or substances that have distinctive odors or
tastes. The second type of test is the:
Cartridges usually attach directly to the respirator
face-piece. The larger volume canisters attach to the chin
A breathing tube
of the face-piece or are carried with a harness and at-
tached to the face-piece by:
The Assigned Protection Factor (APF) is determined ex-
Exhalation valve leakage
perimentally by measuring face-piece seal and:
Air-purifying respirators have limited use at hazardous
waster sites and can be used only when the ambient
19.5
atmosphere contains sufficient oxygen that is greater than
(blank) percent.
The main disadvantage of negative-pressure respirators Draws contaminated air into the face-piece during inhala-
is that, if any leaks develop, the user: tion
A SAR is NOT recommended for entry into IDLH atmos-
An escape SCBA
pheres unless the apparatus is equipped with:
The combination system provides up to 60 minutes of
self-contained air, whereas the escape SCBA contains 5 minutes
much less air, generally for how many minutes?
In which type of respirator, is exhaled air recycled by
Closed-circuit SCBA
removing the carbon dioxide with an alkaline scrubber
1/2
