|Document ID (ISN)||112144|
|ISSN - Serial title
||1545-9624 - Journal of Occupational and Environmental Hygiene
|Convention or series no.
||Janssen L., McCullough N.V.
||Elastomeric, half-facepiece, air-purifying respirator performance in a lead battery plant
||Jan. 2010, Vol.7, No.1, p.46-53. Illus. 26 ref.
||11-0829.pdf [in English]
Elastomeric.pdf [in English]
||This workplace protection factor (WPF) study of a half facepiece air-purifying respirator with P100 filters was done in a lead battery manufacturing plant. Paired air samples for lead were collected inside and outside respirators worn by workers who were properly trained and quantitatively fit tested. Of the 45 valid sample sets, only four had detectable lead on the inside sample. WPFs were calculated for these sample pairs by dividing the outside sample lead concentration (C(o)) by the inside concentration (C(i)). For the remaining 41 sample pairs, the detection limit for lead was used to calculate a maximum estimated C(i) concentration. The C(o) for each of these sample pairs was divided by the C(i) estimate to obtain a minimum WPF value. All the WPFs were rounded down to two significant figures, resulting in values ranging from 12 to over 2500. A rank and percentile procedure resulted in a 50th percentile WPF of 270 and a lower 5th percentile estimate of above 50. These WPFs exceed the assigned protection factor of 10 for half facepieces published by the Occupational Safety and Health Administration. Implications of these findings are discussed.
||lead and compounds; equipment testing; air purifying respirators; battery and dry cell manufacture
||USA; reliability; public OSH institutions
||D - Periodical articles
Toxic and dangerous substances
Metal production and metalworking
|Broad subject area(s)
||Lead and compounds