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  | ![]() DOE-HDBK-5504-95 
Source 
Applicability & 
Reference 
Plan Element 
Plan Reference 
(c) Positive pressure self-contained breathing 
_______________* 
apparatus, or positive pressure air-line respirators 
equipped with an escape air supply, should be used 
when chemical exposure levels present will create a 
substantial possibility of immediate death, 
immediate serious illness or injury, or impair the 
ability to escape. 
(d) Totally-encapsulating chemical protective suits 
_______________* 
(protection equivalent to Level A protection as 
described in 29 CFR 1910.120, Appendix B) 
should be used in conditions where skin absorption 
of a hazardous substance may result in a substantial 
possibility of immediate death, immediate serious 
illness or injury, or impair the ability to escape. 
(1) Totally-encapsulating suits should be capable 
of maintaining positive air pressure. 
(2) Totally-encapsulating suits should be capable 
of preventing inward testgas leakage of more 
than 0.5 percent. 
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