Office of Security, Safety and Risk Management
Chemical Hygiene Plan
C4. RESPIRATORS
1. Employees should wear respirators whenever it is possible that engineering controls or work practices could become or are ineffective and that employees might be exposed to vapor or particulate concentrations greater than the PEL, action level, TLV, or similar limit, whichever is the lowest.
2. The requirements of 29 CFR 1910.134 should be followed, including in particular:
a. Written standard operating procedures governing the selection and use of respirators.
b. All employees who are likely to need to use respirators must be trained in their proper use, inspection and maintenance. (See "NIOSH Guide to Industrial Respiratory Protection", DHHS Publ. No. 87-0116, NIOSH, Cincinnati, 1987, for details.)