MSA Advantage 200, Инструкция по эксплуатации

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Instruction Manual
Advantage 200 Respirator
42
EXPOSURE LIMITS
The exposure limit of the present contaminants can be obtained in the standards department of the
government with jurisdiction over the user (NIOSH, SSST do MTE).

The permissible exposure limits from OSHA (PELs) are found in the Air Contaminants Standard
29 CFR 1910.1000.

NIOSH recommended exposure limits (RELs) were published in the NIOSH Pocket Guide to
Chemical.
If it is not possible to get the exposure limit of the contaminant from one of the sources above, use the
threshold values (TLVs) from the American Conference of Governmental Industrial Hygienists
(ACGIH’s).
THE USER ASSUMES EVERY RISK OF DEATH AND SERIOUS PERSONAL INJURY WHICH
MAY OCCUR IF THE FIT TEST IS NOT PERFORMED OR IF THE RESPIRATOR LIMITATIONS
ARE NOT FOLLOWED.
Exposure Unities for Mixtures
The American Conference of Governmental Industrial Hygienists (ACGIH) has published the following
information to determine the TLV of a mixture:
First determine the total concentration of the chemical mixture (C
Mixture
) from the individual
contaminant concentration (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 individual contaminant concentrations:
T
Mixture
=
Only use these equations if the contaminants present are actually mixed. Some substances do not
mix and may be present separately; for example, in pockets or in different levels. In that case, the
lowest TLV of the substances present must be used to determine the appropriate respirator category
for protection against all contamin
antes present. See MSA’s Response Respirator Selector (P/N
697254) for additional information.
C
Mixture
C1 + C2 + C3 + ...
T1 T2 T3