What question did this study set out to answer?

To assess the appropriateness of assigned protection factors for half-mask negative pressure air-purifying respirators and half-mask powered air-purifying respirators in an active industrial workplace.

April 1, 1984The Annals of Occupational Hygiene

Assigned Protection Factors for Two Respirator Types Based Upon Workplace Performance Testing

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Authors

SLSteven W. LenhartCenters for Disease Control and Prevention DCDonald L. CampbellLinde (United States)

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Implication

Industrial hygiene study reveals actual workplace protection factors in smelter workers, indicating powered respirators require lower safety ratings.

Key Points

To assess the appropriateness of assigned protection factors for half-mask negative pressure air-purifying respirators and half-mask powered air-purifying respirators in an active industrial workplace.
Conducted an industrial hygiene investigation within a primary lead smelter located in the United States.
Performed personal sampling on workers to quantify actual workplace protection factors for each respirator class.
An assigned protection factor of 10 was determined to be generally acceptable for half-mask negative pressure air-purifying respirators under the studied workplace conditions.
An assigned protection factor of 500 proved inappropriately high for half-mask powered air-purifying respirators, with empirical data indicating a value not exceeding 50 is appropriate.

Cite This Study

Lenhart et al. (1984) studied this question.

synapsesocial.com/papers/6a70e1cbe5469ee92be18e56 https://doi.org/10.1093/annhyg/28.2.173

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Implication

Industrial hygiene study reveals actual workplace protection factors in smelter workers, indicating powered respirators require lower safety ratings.

Assigned Protection Factors for Two Respirator Types Based Upon Workplace Performance Testing

Discussion

Member takes

Implication

Key Points

Cite This Study

Assigned Protection Factors for Two Respirator Types Based Upon Workplace Performance Testing

Discussion

Member takes

Implication

Key Points

Cite This Study

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Also Consider