From: Steve Anderson email@example.com
Subject: lasers and safety
lasers and safety 10:05 AM 12/28/96
This is probably more URL's here than anyone really wants to know about laser safety.
I have experience with the initial implementation of the BRH (nee CDRH) laser safety variances for a variety of laser equipment at Coherent; HeNe, Class IV Ar, Kr, bar code scanners, medical, and light show scanning products. My "nite job" company is currently bringing the laser show system at Belz Mall in Las Vegas (two 20 watt argons, the "bad boy" re: aerial displays) up to CDRH standards. At Sonoma State U. we have a 5 watt argon system operated by the students for spectroscopy which involves passing a laser safety course to become a certified operator, similar to the x-ray generator and neutron source. It is true we can "skate" by being a state institution and using our own guidelines, but the Health & Safety office insists on tighter-than-normal safety procedures to avoid liability issues.
They have relaxed the Class I and II restrictions, but now everything over 5 mw is probably Class III or IIIb. It especially irritates me the way they label a 5 mw as "not to exceed 10". One amusing anecdote I remember is when they put in the two-second time delay before turn-on,... the first day the new "safe" lasers went out we had a series of eye exposures more than the total of the previous two years from people looking down the tube to see why it didn't come on right away, so,... safety is a many-factored issue. I have a photo-coagulation scar in my right eye with which I can make pilot lights blink in a dark room. ;-)
The key is the Class I limit. If you are seeing any splotches of scattered light, or back reflections from a lens, etc., put a power meter on it. If it is moving, you must use an energy meter. The trick is to stay .5 mw or less, which is not hard if it is spread out. A back reflection (not spread out) from a 5 mw off of a microscope slide is probably over the limit. To get retinal degradation from radiation of this amount you must stare at it for a half hour or so. If you see a green after-image (or red, if it is a green laser) after an exposure, you are probably OK. We are having a controversy now because the (nuclear) Radiation Safety officer does not want to be hassled with EMF complaints about magnetic fields coming from monitors, etc., and so, is giving over those responsibilites to a non-ionizing radiation safety officer. One thing to watch out for in lecture hall displays (which we use 5 mw lasers usually projecting onto a screen) are the tall chrome lab faucets. These will send out a line of light that is over the Class I limit if you hit them with a beam. They act like cylindrical mirrors.
I am getting ready for the First Nite New Years show, in Santa Rosa, CA, where we will be using a 5 watt argon aerial display. If it is raining they won't be able to do the fireworks! agh!
Happy New Year !, Steve Anderson
The world's largest manufacturer of lasers for science, medicine, entertainment and micromachining...
LASER SAFETY MANUAL
University of Pennsylvania Laser Safety Manual. Table of Contents. 1.0 Introduction 2.0 Scope 3.0 Responsibilities 4.0 Personnel Training and...
Manual - size 47K - 27 Sep 95
Laser Safety Training
Memorandum. To: Penn Laser Users. From: Laura Peller. Date: November 6, 1995. Re: Laser Safety Programs. The Office of Environmental Health & Safety...
Memorandum - size 2K - 7 Nov 95
LASER SAFETY VIEWER MENU
Laser Safety Viewer Menu. To view the Laser Safety Document, choose one of the following: Ghost View For Windows (.ps) Mac Word 5.1 (.mcw) MS Word 6.0...
MENU - size 340 bytes - 8 Aug 94
The Laser Safety Homepage
Laser Safety Homepage Navigation Menu. NSWC Homepage. G Department. G70 WWW Server. G71 Homepage. Features: Laser Fundamentals Laser Hazard...
Homepage - size 2K - 18 Jun 96
Laser Safety Homepage has moved!
Sorry, we moved it! Click here for the Navy & Marine Corps Laser Safety Homepage!
Homepage - size 506 bytes - 22 May 96
Laser Pointer Safety Tips
Los Alamos National Laboratory Lessons Learned for Quality and Safety ESH-7 Occurrence Investigation Group OEWS Bulletin Issue 94-42. LASER POINTER SAFETY.
Tips - size 2K - 28 May 96
Laser Safety Reminder
Reminder- size 134 bytes - 1 Feb 96
Laser Safety Policies for Class 3b and Class 4 Lasers. ALS User Advisory 6/Rev. 0. Overview. This advisory is designed to give ALS users who intend to use.
Safety- size 5K - 10 Jun 96
LASER SAFETY. Always use certified eye protection with side shields to protect against scattered radiation. Never stare at the laser beam. Observe "Laser..
Safety- size 966 bytes - 8 Mar 96
Laser Aircrew Safety & Education Demonstrator
Laser Aircrew Safety & Education Demonstrator. LASED (Laser Aircrew Safety & Education Demonstrator) is a self-contained unit demonstrating the...
Demonstrator- size 5K - 29 May 96
UW LASER SAFETY PROGRAM
UW LASER SAFETY PROGRAM. UW Health & Safety Policy 34 requires conformance to health and safety regulations and standards. The UW Laser Safety Program is..
Program - size 3K - 28 Apr 95
Concordia College Safety Manual. Chapter 11: Laser Safety. Sections: 11.1 Introduction. 11.2 Beam Hazards. 11.3 Viewing Laser Radiation. 11.4 Collateral...
Safety- size 59K - 25 May 96
Laser Safety Refresher
Laser Safety Refresher. LASI-R - A156. Content:In this 1-hour class, participants will review potential hazards, control measures, medical surveillance,...
Refresher- size 2K - 24 Apr 96
Laser Safety. LASI - A155. Content:In this 2-hour class, participants will gain a basic understanding of the potential hazards, control measures, medical..
Safety- size 2K - 24 Apr 96
[phcommittees] LASER SAFETY COMMITTEE
Presbyterian Hospital Committees, 1994. LASER SAFETY COMMITTEE. Approved by Executive Committee of Medical Board as a Standing Committee on February 4,...
Committee - size 1K - 8 Feb 96
Laser Safety Advice
Laser Safety Advice. TBV Science. Go to List of Product Groups.
Advice - size 224 bytes - 12 Mar 96
LASER & EYE SAFETY IN THE LABORATORY
Title: LASER & EYE SAFETY IN THE LABORATORY Author: Matthews, Larry & Garcia, Gabe Price: $ 19.95 Publisher: I E E E Year: 1994 ISBN: 0-7803-1037-3 Pages:.
L & EYE - size 988 bytes - 26 Jun 96
OEHS Laser Safety
Office of Environmental Health & Safety (Laser Safety Information)
Documents of Interest: Laser Safety Manual. Notes On This Document:
This document is...
Safety - size 767 bytes - 21 Dec 95
Laser Safety Training Checklist
Print this form, complete it, with your signature and the signature of your Supervisor/Designate, and return it to: J.R. Dutcher, Dept. of Physics, Univ...
Checklist- size 2K - 1 May 96
IMC "Laser Safety Training Program"
The Laser Safety Training Program. Lasers are at work in almost every human endeavor, and in some areas they pose serious hazards if not handled properly..
Program - size 5K - 24 Apr 96
Laser Safety Committee
Laser Safety Committee. Summary of Charges Advises on all matters related to coherent sources of non-ionizing radiation, reviews and approves uses of...
Committee- size 2K - 12 Feb 96
USAF AL/OEO Laser Safety
United States Air Force Humans Systems Center. Armstrong Laboratory Optical Radiation Division. Laser Safety Program. Services Provided by the Armstrong...
Safety - size 3K - 29 May 96
CPES Laser Safety
COLLEGE OF PHYSICAL AND ENGINEERING SCIENCE UNIVERSITY OF GUELPH. Procedures for new laser personnel: Registration procedure. Laser safety training...
Safety- size 3K - 31 May 96
OEHS Laser Safety
Office of Environmental Health & Safety (Laser Safety Information) Documents of Interest: Laser Safety Manual. Notes On This Document: This document is...
Safety - size 761 bytes - 10 May 96
10 GOLDEN RULES OF LASER SAFETY
Department of Electronic and Electrical Engineering. The 10 Golden Rules of Laser Safety. This is a list of suggested "do's and don'ts" to bear in mind...
Safety - size 3K - 26 Apr 96
ADUSD(SH) Laser Safety
Laser Safety. U.S. Army Laser Safety Home Page The Laser/Optical Radiation Hazard Program at the U.S. Army Center for Health Promotion and Preventive...
Safety - size 885 bytes - 9 Nov 95
Laser Safety Control Measures
Laser Safety Control Measures. adopted from ANSI Z136.1-1993* Laser Control Measures by Laser Class. Class 1. Class 2a. Class 2. Class 3a. Class 3b. Class.
Measures- size 11K - 12 Apr 96
Laser Safety Information
Laser Safety Information. Glossary of Terms. Laser Hazard Classification. Control Measures. Non-beam Hazards. This page maintained by: Melissa Woo...
Information- size 868 bytes - 12 Apr 96
Sira Training - Laser Safety
Laser safety in industry and the laboratory. 4 July 1996 A one-day course at the London Chamber of Commerce and Industry, London EC4. OBJECTIVE Currently,.
Safety- size 6K - 21 Mar 96
Section 5.22 -- Laser Safety
Title Page. Environment, Safety, and Health Manual. Section 5.22 Rev. 0, 7/14/94. Laser Safety. REVISION LOG. Revision No. Date Approved. Text Changes...
Safety - size 32K - 15 Feb 96
Laser Safety and the Eye
Laser Safety and the Eye. Hidden Hazards and Practical Pearls. Osama Bader,MD, and Harvey Lui, MD, FRCPC. From the Lions Laser Skin Centre Division of...
Eye - size 13K - 14 Feb 96
Laser Safety Guide
Laser Safety Guide. Table of Contents. Introduction. Laser Safety Committee. Biohazard Committee. Laser Safety Officer. Laser System Supervisor...
Guide - size 76K - 11 Jan 96
The Principal Investigator's Laser Safety Training Responsibilities
The Principal Investigator's Laser Safety Training Responsibilities Safety Net #74. Principal Investigators who use or supervise the use of lasers or...
Responsibilities - size 4K - 14 Nov 95
DU Safety Training - Laser Classification
Laser Classification. The basic approach of virtually all laser safety standards has been to classify lasers by their potential hazard based upon their...
Classification - size 3K - 11 Aug 95
DU Safety Training - Laser Hazardous
Laser Hazardous. Basic Hazards from Laser Equipment. Eye -- Damage can occur from both acute and chronic exposure to laser radiation depending on the...
Hazardous- size 4K - 11 Aug 95
DU Safety Training - Laser Safety Rules
Laser Safety Rules. Class 1 Lasers. A warning sign indicating the laser classification should be placed in a visible location on the laser. Class 2 Lasers.
Rules - size 4K - 11 Aug 95
Laser safety Officer
CSIRO Division of Minerals. Laser Safety Officer. PREREQUISITES. 1. Completed Laser Safety Course. 2. Knowledge of General Laboratory Safety. DUTY...
Officer - size 2K - 20 May 96
LASER SAFETY MANUAL
University of Pennsylvania Laser Safety Manual. Table 1. Control Measures for the Four Laser Classes. This summary is taken from the ANSI Z.136.1-1993....
Manual - size 7K - 21 Sep 95
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Steve Anderson, Equip. Tech. III "change is the only constant" Physics & Astronomy Dept. (707) 664-2330 CSU Sonoma State University firstname.lastname@example.org ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^