Determination of toxic material penetrations for wildland respirator filters

Foote, K.L.

doi:10.2172/202439

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2008

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“…Therefore, it would be extremely useful for fire fighters to have a reliable indicator to signal the breakthrough of the toxic gases and vapors. Although, various studies have developed predictive mathematical models to calculate breakthrough times for individual contaminants [Foote, 1994;Wood, 1994Wood, , 2005Yoon et al, 1996], it is extremely difficult to estimate accurate breakthrough times for complex mixtures [Yoon et al, 1996]. This is complicated by numerous external factors, such as contaminant's chemical properties, contaminant concentration, humidity, temperature, breathing rate of the respirator user, and the variability of respirator filters between manufacturers.…”

Section: Discussionmentioning

confidence: 99%

Effect of protective filters on fire fighter respiratory health: field validation during prescribed burns

Vos

Cook

Devine

et al. 2008

American J Industrial Med

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The field validation trials during prescribed burns supported the findings from the controlled exposure trials in the smoke chamber. Testing the effectiveness of three types of different filters under bushfire smoke conditions in the field for up to 2 hr demonstrated that the P filter is ineffective in filtering out respiratory irritants. The performance of the POV and the POVF filter appears to be equally effective after 2 hr bushfire smoke exposure in the field.

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