Paper
1 July 1990 Deriving exposure limits
Author Affiliations +
Abstract
Historically many different agencies and standards organizations have proposed laser occupational exposure limits (EL1s) or maximum permissible exposure (MPE) levels. Although some safety standards have been limited in scope to manufacturer system safety performance standards or to codes of practice most have included occupational EL''s. Initially in the 1960''s attention was drawn to setting EL''s however as greater experience accumulated in the use of lasers and some accident experience had been gained safety procedures were developed. It became clear by 1971 after the first decade of laser use that detailed hazard evaluation of each laser environment was too complex for most users and a scheme of hazard classification evolved. Today most countries follow a scheme of four major hazard classifications as defined in Document WS 825 of the International Electrotechnical Commission (IEC). The classifications and the associated accessible emission limits (AEL''s) were based upon the EL''s. The EL and AEL values today are in surprisingly good agreement worldwide. There exists a greater range of safety requirements for the user for each class of laser. The current MPE''s (i. e. EL''s) and their basis are highlighted in this presentation. 2. 0
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David H. Sliney "Deriving exposure limits", Proc. SPIE 1207, Laser Safety, Eyesafe Laser Systems, and Laser Eye Protection, (1 July 1990); https://doi.org/10.1117/12.17826
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CITATIONS
Cited by 10 scholarly publications.
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KEYWORDS
Laser safety

Standards development

Eye

Injuries

Skin

Ultraviolet radiation

Electroluminescence

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