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Determination of Respirator Filtering Requirements in a Coke Oven Atmosphere.

Authors
Rodgers-SJ; Friel-JV; Roehlich-F
Source
MSA Research Corporation, Evans, City, Pennsylvania 1975 Sep:62 pages
Link
NIOSHTIC No.
00050689
Abstract
Dust, mist and fume respirator filter media approved under 30 CFR 11, subpart-K are tested in a coke oven environment containing carbon-monoxide (630080), nitric-oxide (10102440), nitrogen dioxide, and sulfur-dioxide (7446095). Five different types of filter media are evaluated for a total of 45 tests, the efficiency being based on the respirable particulate fraction of the coke oven emissions. Four of the five filter media tested show efficiencies greater than 95 percent. The other media show an efficiency of 93.8 percent. The particulate concentration downstream of the respirator filter media is less than 0.3 milligram per cubic meter in all cases. The gases which are monitored exceed the threshold limit values (TLV) during some of the charging operations. Time weighted average values are found to be less than the TLV in all of the runs.
Keywords
NIOSH-Contract; Contract-099-74-0088; Toxic-gases; Filtration; Air-contamination; Air-quality-control; Respiratory-protective-equipment;
CAS No.
630-08-0; 10102-44-0; 7446-09-5;
Publication Date
19750901
Funding Type
Contract;
Fiscal Year
1975
NTIS Accession No.
PB-276345
NTIS Price
A05
Identifying No.
Contract-099-74-0088
Source Name
MSA Research Corporation, Evans, City, Pennsylvania
State
PA;
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