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LIA releases revised standard to promote safer facilities.

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March 25, 2014 - Updated for first time in 7 years, American National Standard for Safe Use of Lasers will be available through LIA. ANSI Z136.1 guides safe use of lasers and laser systems by defining control measures for 7 laser hazard classifications. Some highlights include: 19 new definitions of key terms; increase in allowed exposure levels for wavelengths between 1.2–1.4 Ám; and updated section on "special qualifications" for medical-related exposures to include MPEs expressed in terms of illuminance.

LIA Releases Revised ANSI Z136.1 Standard to Promote Safer Facilities


Laser Institute of America (LIA)
13501 Ingenuity Drive, Suite 128
Orlando, FL, 32826
USA



Press release date: March 17, 2014

ORLANDO, FL — Updated for the first time in the last seven years, the new American National Standard for Safe Use of Lasers will be available through the Laser Institute of America, secretariat of the Accredited Standards Committee (ASC) Z136, which develops the laser safety standards. The ANSI Z136.1 standard guides the safe use of lasers and laser systems by defining control measures for the seven laser hazard classifications.

“There have been extensive changes to the ANSI Z136.1 standard with a focus on increasing usability,” explained Ben Rockwell, chairman of ASC Z136 Standards Subcommittee 1 (SSC-1). “Significant increases in the MPE in the near-infrared will enable a plethora of new laser applications. Several sections were rewritten to reorganize, update and improve technical content to allow for easier access to information necessary for everyday laser safety implementation.”á

Added Wesley Marshall, chair of ASC Z136 Technical Subcommittee 7, Analysis and Applications (TSC-7), the newly revamped ANSI Z136.1 “is probably the most comprehensive revision to date, even more so than the 2000 revision. This newest revision, like past standards, covers intrabeam viewing and viewing of diffuse reflections and extended sources, considering photochemical, thermal and skin hazards.”

According to Rockwell, who has chaired LIA’s International Laser Safety Conference (ILSC«) several times, highlights of the standard include:

19 new definitions of key terms, including administrative control measure, beam divergence, beam waist, saturable absorption and visible luminous transmission.
A significant increase in allowed exposure levels for wavelengths between 1.2 Ám and 1.4 Ám, and a slight decrease in exposure limits for pulses shorter than approximately 10 Ás.
An updated section on “special qualifications” for medical-related exposures to include MPEs expressed in terms of illuminance.
Rearranged Section 4 (Control Measures) and rewritten Section 7 (Non-beam Hazards) to increase comprehension.
Examples involving new exposure limits added to Appendix B.
Vertical standards — Z136.2 through Z136.9 — now take precedence over this document within the scope of those standards. “This makes the Z136.1 officially a horizontal standard.”

The degradation of optics transmission in the UV and NIR is now included in the analysis of hazard classification of lasers.
The ANSI Z136.1 standard is indispensable in creating a safe working environment where lasers are used. While it is a voluntary standard, it is a Laser Safety Officer’s (LSO’s) best friend — and a vital insurance policy for companies.

“What gives the Z136.1 standard a little bit of teeth is OSHA,” said Bill Ertle, president of Rockwell Laser Industries, during his presentation on Z136.1 updates at ILSC 2013 in Orlando. “OSHA accepts industry practices. If you go to the OSHA website and click on the laser page, it tells you that you should follow safe practices,” referencing the ANSI approved Z136 series.

Having a laser safety program in place is vital. “Many accidents have [involved untrained or unauthorized personnel, so it’s critical to authorize the [laser users, train them appropriately and perform periodic audits,” noted Ertle. He recalled one report of potential laser irradiation that prompted a visit from OSHA. “People didn’t know who the LSO was; people didn’t know what to do in the event of an injury, and this company got slapped with a nice fine. Not having a program in place was the biggest thing they were hit for.”

That is why “maintaining records is critical — any training, any incidents. Perform periodic audits and surveys. We always, in the Z136 standards, yield to the LSO. Many words in the Z136.1 standard are very flexible to let management and the LSO decide what’s appropriate for their facility.”

To obtain the newly revised ANSI Z136.1 standard, visit LIA’s online store at www.lia.org/store. For a limited time, the cost is reduced to $135 for LIA members and $155 for non-members.

About LIA
The Laser Institute of America (LIA) is the professional society for laser applications and safety serving the industrial, educational, medical, research and government communities throughout the world since 1968.

www.lia.org
13501 Ingenuity Drive
Ste 128, Orlando, FL 32826
+1.407.380.1553
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