TAL 201 (L) Rev. 1 - 818366
3
a. The cartridge/filter must be
approved for all contaminants
present.
b. Contaminants present simulta-
neously must be below IDLH
levels for the specific contami-
nants. If any one contaminant in
the mixture exceeds the IDLH
concentration then the entire
mixture must be treated as
IDLH and the respirator cannot
be used (except for escape
from particulates with appropri-
ate filter).
Time Use Limitation
Canisters with an N95 filter shall be
limited to 8 hours of use (continuous
or intermittent) against particulates.
[Service time can be extended by per-
forming an evaluation in the specific
workplace setting that demonstrates
(a) that the extended use will not
degrade the filter efficiency below
95% or (b) that the total mass loading
of the filter is less than 200 mg.]
Exposure Limits
A listing of acceptable exposure limits
from the following sources.
•
American Conference of Govern-
ment Industrial Hygienists (ACGIH)
•
Occupational Safety and Health
Administration (OSHA)
•
National Institute for Occupational
Safety and Health (NIOSH)
•
American Industrial Hygiene
Association (AIHA)
Contact MSA at 1-800-MSA-2222 for
information.
Exposure Limits for Mixtures
The American Conference of Govern-
mental Industrial Hygienists (ACGIH)
publishes the following information to
determine the TLV of a mixture.
First, determine the total concentra-
tion of the chemical mixture (C
Mixture
)
from the individual contaminant con-
centrations (C
1
, C
2
, C
3
...) using the
following formula:
C
Mixture
= C
1
+ C
2
+ C
3
+ ...
The TLV of the mixture is found by
using the following formula where T
1
,
T
2
, T
3
... are the individual contaminant
TLVs and C
1
, C
2
, C
3
, ... are the individ-
ual contaminant concentrations:
Only use these equations if the conta-
minants present are actually mixed.
Some substances do not mix and
may be present separately, for exam-
ple, in pockets or at different levels. In
that case, the lowest TLV of the sub-
stances present must be used to
determine the appropriate respirator
category for protection against all
contaminants present.
GENERAL DESCRIPTION
Abrasi-Blast Respirators are approved
by the National Institute for Occu-
pational Safety and Health (NIOSH).
The Abrasi-Blast respirator is available
in the following basic configurations:
Configuration #1:
Type CE, supplied-air respirator with
low-pressure flow control valve
Configuration #2:
Type CE, supplied-air respirator with
high-pressure flow control valve.
Configuration #3:
Type CE, supplied-air respirator with
vortex tube.
Configuration #4:
Combination Type CE: Supplied-air
respirator and air-purifying respirator
with Duo-Flo valve and one of the fol-
lowing canisters or Filter cartridge:
GMA-C-N95 canister
GMD-C-N95 canister
GMR-I-P100 canister
P100 Filter Cargridge
Configuration #5:
Type CE, pressure-demand supplied-
air respirator with belt-mounted pres-
sure demand regulator.
Type CE, supplied-air respirators
(Configurations 1, 2, and 3, above) are
approved for use in atmospheres not
immediately dangerous to life or health:
“Not immediately dangerous to life or
health” means any hazardous atmos-
phere which may produce physical
discomfort immediately, chronic poi-
soning after repeated exposure, or
acute adverse physiological symptoms
after prolonged exposure (Title 42
CFR, Part 84, Subpart A, Par. 84.2(x)).
Type CE, Combination respirator
(Configuration 4,) is approved for use
against specific contaminants at con-
centrations not immediately danger-
ous to life or health. See pages 9 and
10 for respirator types and specific
protection provided.
Type CE, MSA Pressure Demand air-
line respirators (Configuration 5) are
approved for use in atmospheres not
immediately dangerous to life or health.
Description
RESPIRATOR TYPE
RESPIRATORS WITH
RESPIRATORS WITH
PARTICULATE FILTERS
CHEMICAL OR
RESPIRATOR USE
OR FILTER
COMBINATION
CARTRIDGES
CARTRIDGES
Routine Use in Air-Supplied
• 1,000 Times Exposure
• 100 Times Exposure
Mode - Including Entry
Limit
Limit
Continuous Use and
• IDLH
• IDLH
Non-Emergency Egress
• 1,000 ppm organic vapors
for organic vapor
respirators only
Routine Use in Air-Purifying
• 100 Times Exposure
• 100 Times Exposure
Mode - Including Entry,
Limit
Limit
Continuous Use, Non-
• IDLH
• IDLH
Emergency Egress and/or
• 1,000 ppm organic vapors
Moving from Station-to-
for organic vapor
Station
respirators only
Emergency Escape in Air-
• Unlimited
• 100 Times Exposure
Purifying Mode
Limit
• IDLH
• 1,000 ppm organic vapors
for organic vapor
respirators only
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