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Product Code: ILSC2009_1203

Revised Non-beam Hazard Section in ANSI Z136.1
Authors:
Gene Moss, Corning Inc.; Corning NY USA
Ben Edwards, Duke University; Durham NC USA
Tom Tierney, Lanl; Los Alamos NM USA
Presented at ILSC 2009

The ANSI Z136 Non-Beam Hazards (NBH) Technical Subcommittee has proposed revision of the NBH section in the Z136.1 Standard for the Safe Use of Laser. Factors motivating these changes include:
a) The number of NBH have tripled in the last decade,
b) NBH tend to incur greater regulatory compliance burdens and consequences than beam hazards,
c) NBH remain the leading cause of laser related incidents,
d) N BH can extend beyond the NHZ,
e) Unlike beam hazards, NBH have produced fatalities,
f) New laser technologies and applications have increased the potential newer NBH concerns.

In order that laser safety professionals and institutions may better address the concerns raised by NBH issues, this revision includes:
1. Clarification of the NBH definition to more explicitly delineate NBH from other hazards that, though serious, are not associated with the laser system and therefore resides outside of a laser safety standards scope.
2. Revision of the sections addressing exposure to laser generated ionizing radiation (LGIR).
3. Information on the recognition and control of laser generated nanoparticles.
4. Greater emphasis on the need to better contain laser generated air contaminants (LGAC).
5. Guidance regarding the potential ignition source hazard from lower class lasers.

The sub-committee believes these proposed changes will help to ensure an appropriate and expanded coverage of existing and future laser NBH concerns.

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