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THE ORCBS > Occupational Safety > Programs & Guidelines > Respiratory Protection > Respiratory Protection Program >
RESPIRATOR
PROGRAM REQUIREMENTS - CARTRIDGE AND FILTER SELECTION AND USAGE
Cartridges and
filters are currently named under 42 CFR 84. This standard creates
nine new classes of filters. The series are referred to as N, R
and P.
| Filter
Series |
Use
in Oil Atmospheres |
%
Efficiency |
|
N
|
No |
95,
99 or 100 |
|
R
|
Yes,
Maximum 8 hours |
95,
99 or 100 |
|
P
|
Yes,
Possible for longer than 8 hours |
95,
99 or 100 |
The 100 series
were formally called HEPA under 30 CFR 11.
The length of
time a cartridge will protect against contaminants is dependent
on various factors which include:
a) Hazards
present
b) Contaminant
concentration
c) Breathing
rate
d) Humidity
e) Temperature
If a cartridge
does not have an end of service life indicator, the ORCBS will develop
a cartridge change-out schedule based on the above considerations
and data that will insure that canisters and cartridges are changed
before the end of their service life. This information will be obtained
from the manufacturers test data and distributed to wearers at the
time of fit testing or refit testing, and as needed. Particulate
cartridge change-out schedule will be based on increased breathing
resistance.
Training
Respiratory Protection Program
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