TITLE:

ES&H Manual

 

DOCUMENT ID:

6410 Appendix T3

Laser Personal Protective Equipment (PPE)

 

 

1.0            Purpose

 

Jefferson Lab recognizes that lasers expose workers to certain recognized hazard issues, some of which can be mitigated through the use of appropriate personal protective equipment (PPE). This appendix provides information on how to:

 

·         Determine the appropriate PPE, and

·         Obtain it.

 

2.0            Scope

 

Each authorized laser system/installation poses its own unique hazard(s). Required PPE, over and above that listed within this document, is defined within a system or area’s Laser Operational Safety Procedure (LOSP) and/or during the experiment review process.

 

PPE does not take the place of engineered and administrative control measures; rather it is used in conjunction with them to increase safety at Jefferson Lab.

 

This appendix applies to Jefferson Lab’s minimum laser PPE requirements. See ES&H Manual Chapter 6620 Personal Protective Equipment Program for guidance regarding the use of additional “basic PPE” for non-laser work. 

 

Certain lasers generate airborne contaminates that may not be adequately removed by engineered controls (i.e. local exhaust ventilation). Contact Industrial Hygiene to perform a task hazard analysis to determine appropriate controls.

 

The process steps for this procedure are performed in coordination with ES&H Manual Chapter 6410 Laser Safety Program.

 

3.0            Responsibilities

NOTE:           Management authority may be delegated at the discretion of the responsible manager.

 

Responsibilities for each process step are outlined within the procedure.

 

4.0            Process Steps

 

4.1              Safety Glasses/Goggles

Laser protective eyewear (including glasses or goggles) is worn when engineering and administrative controls do not eliminate ocular exposure to below the maximum permissible exposure (MPE) level and during alignment procedures. 

 

Step 1:             Determine the following:

·         Wavelength(s) of laser output.

·         Potential for multi-wavelength operation.

·         Radiant exposure or irradiance levels for which protection (worst case) is required.

·         Exposure time criteria.

·         MPE level

·         Optical density requirement of eyewear filter at laser output wavelength.

·         Need for prescription glasses.

 

Step 2:             Selection

Provide information in Step 1 to the Laser System Supervisor (LSS). 

 

For beam alignment operations contact the Laser Safety Officer for “reduced optical density” eyewear.  This eyewear is allowed during alignment operations and is stored in a different location from the “maximum optical density” eyewear appropriate for the area. 

 

Step 3:             Purchase

The LSS will requisition and/or provide required laser protective eyewear (see ES&H Manual Chapter 6410 Appendix T2 Laser Requisitioning and Purchasing).

 

4.2              Hearing Protection

Noise levels from certain lasers and associated systems may be hazardous. 

 

Step 1:             Noise Hazard Analysis

·         Contact Industrial Hygiene and request a noise hazard analysis.

·         If levels are found to be acceptable – the evaluator will inform the concerned party(s) of the determination.

 

Step 2:             Determination

If the area is deemed to be a high noise area, the evaluator will coordinate with the LSS for:

·         Medical monitoring for workers in accordance with ES&H Manual 6800 Appendix T1 Medical Monitoring,

·         PPE allocation,

·         Training as necessary, and

·         Posting of warning signs.

 

4.3              Proper Work Clothes

Certain laser light can result in burns to the skin.  Long sleeved shirts and pants, made of natural fibers are recommended when working with these types of lasers.

 

Remove reflective jewelry, (e.g.: watches, rings, dangling badges, and necklaces) to reduce accidental reflections.

 

5.0            Revision Summary

 

Revision 1.1 – 07/01/14 TechPOC changed from D.Owen to B.Manzlak

Revision 1 – 12/06/10 – Updated to reflect current laboratory operations.

 

 

 

ISSUING AUTHORITY

TECHNICAL

POINT-OF-CONTACT

APPROVAL DATE

REVIEW DATE

REV.

 

 

ESH&Q Division

Bert Manzlak

12/06/10

12/06/15

1.1

 

This document is controlled as an on-line file.  It may be printed but the print copy is not a controlled document.  It is the user’s responsibility to ensure that the document is the same revision as the current on line file.  This copy was printed on 7/2/2014.