Respirators full-facepiece positive-pressure

PERSONAL PROTECTION wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible appropriate respirators with dust/mist filters are needed in areas where exposure would be above the permissible exposure level (PEL) use a full-facepiece positive pressure, self-contained breath apparatus in instances where the exposure levels are not known P2 filter respirators are recommended for harmful particles maintain eyewash fountains and quick-drench facilities in work area. 

X PEL or unknown concentration (1) Self-contained breathing apparatus with full facepiece in positive-pressure mode or (2) Full-facepiece positive-pressure demand supplied-air respirator with auxiliary self-contained air supply. 

If the exposure limit is exceeded, a full facepiece respirator with dust/mist filter may be worn up to 50 times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies or instances where the exposure levels are not known, use a full-facepiece positive-pressure, air-supplied respirator. WARNING Air purifying... 

Supplied-air respirators are not required but are permitted imder die following conditions Cotton dust concentration not greater than lOX die PEL Any supplied air respirator not greater dian 1OOX the PEL Any supplied-air respirator widi full facepiece, helmet, or hood greater dian lOOX die PEL Supplied-air respirator operated in positive-pressure mode. ... 

Exposure limits Potential occupational carcinogen. Given that no standards have been established, NIOSH (1997) recommends the most reliable and protective respirators be used, i.e., a self-contained breathing apparatus that has a full facepiece and is operated under positive-pressure or a supplied-air respirator that has a full facepiece and is operated under pressure-demand or under positive-pressure in combination with a self-contained breathing apparatus operated under... 

PERSONAL PROTECTION Wear Tyvek-type disposable protective clothing, including disposable Tyvek-type sleeves taped to gloves enclose operations and use local exhaust ventilation at site of chemical release at any exposure level, use a NIOSH approved supplied-air respirator with a full facepiece or self-contained breathing apparatus operated in positive pressure made provide eyewash baths and safety showers in work area. 

Escape from IDLH conditions (IDLH is 2,000 ppm) (1) Any positive-pressure self-contained breathing apparatus with an appropriate service life or (2) Any air-purifying full-facepiece respirator equipped with a front- or back-mounted butadiene or organic vapor canister. 

Supplied-air respirator with half-mask or full facepiece operated in pressure-demand or other positive-pressure mode. 

Self-contained breathing apparatus with a full facepiece operated in pressure-demand or other positive-pressure mode or (2) Supplied-air respirator with a full facepiece operated in pressure-demand or other positive-pressure mode and equipped with an auxiliary escape-type self-contained breathing apparatus operated in pressure-demand mode. 

Supplied-air respirators with full facepiece, hood, helmet, or suit, operated in positive-pressure mode. 

Full-facepiece supplied-air respirator operated in pressure-demand or otiier positive-pressure mode (e.g.. Type CE abrasive blasting respirators [see page 360] operated in a continuous-flow mode). 

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