Appendix A
ACTIVITY HAZARD DOCUMENT (AHD)
Outline for Class 3b & Class 4 Laser Users

GENERAL INFORMATION


TITLE

LOCATION
Bldg.-Room


DIVISION

LASER SAFETY CONTACT





DESCRIPTION OF ACTIVITY
Description of activity including unique equipment (its application) or activity and principal parameters.

 

 

DURATION (Check One Box)

 Ongoing

 Limited Period; Enter # of Months _____

 

IDENTIFICATION OF HAZARDS
Identification of potential hazards associated with the activity, lasers, and any additional hazards (e.g., toxic gases)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MITIGATION OF HAZARDS

Controls to reduce the potential hazards. From a laser perspective, the following needs have to be addressed:

Identification of laser(s): Laser specifications

Complete the following chart (to the extent possible). List all lasers, including low power alignment lasers:

 

Laser 1

Laser 2

Laser 3

Type




Manufacturer




Model




Serial #




Maximum Power




Wavelength(s)




Wavelength Used




Power Used




Pulse Length




Pulse Repetition Rate




Beam Diameter




Beam Divergence




Property #




Made In-House




Class




 

LASER USERS

a. Personnel who are authorized to use the laser described in this AHD are listed below. A Laser User may work unsupervised only on tasks for which formal training and on-the-job training have been completed and signed-off below by the Principal Investigator [or designated Laser Safety contact].

b. Signature by the Laser User acknowledges receipt of on-the-job training, including hands-on training in the laser lab, covering the specifics of this AHD.

c. Signature by the Principal Investigator [or designated Laser Safety contact] indicates that the Laser User has successfully completed formal laser safety training, a laser eye exam, and on-the-job training, including hands-on training in the laser lab, covering the specifics of this AHD.

d. Any restrictions to the Laser User's use of lasers under this AHD will be noted in the Usage Restrictions column.

Laser
User

Name
Emp.#
Usage Restrictions
OJT
Date
Signatures
None
Restrictions
Laser User
Principal Investigator [or designated Laser Safety contact]
             
             
             
             
             
             
             
             
             

 

ATTACH A DIAGRAM OF LASER USE AREA. (A simple block diagram is sufficient. The diagram should also be posted on the lab door.)

DESCRIBE ACCESS CONTROLS, INCLUDING USE OF INTERLOCKS
 It is the responsibility of the user to maintain and enforce access control.


 

DESCRIBE ALIGNMENT PROCEDURES
All laser users need to keep in mind that the majority of laser accidents occur while aligning the laser. All possible steps will be taken to prevent any such accidents. Alignment procedures are performed in accordance with the manufacturers' recommendations and at the lowest possible laser output, such that the primary beam or a specular reflection of the primary beam does not expose the eye to a level above the maximum permissible exposure for intrabeam exposure. Safety laser glasses are worn at all times during alignment procedures. The laser beam is never to be viewed directly. As a precaution, reflective jewelry will be taken off by those handling the laser.


 

WHERE HAVE LASER WARNING SIGNS BEEN POSTED?
Laser warning signs have been posted (location); they indicate the lasers in the control area, max. power output, wavelength, and max. hazard class in use in the area. (Warning signs can be obtained from LBNL-LSO or Campus LSO.)

 

LASER PROTECTIVE EYEWEAR

Number of
Pairs
Available

Location of Eyewear

Manufacturer

Optical Density

Wavelength











 

BEAM PATH
Is beam path open, enclosed, or partially enclosed? Explain.


 

NONBEAM HAZARDS
List and describe how they have been addressed.

HAZARD

CORRECTIVE ACTION









 

MAINTENANCE

The equipment will be maintained by specially trained and/or certified laboratory personnel. All relief devices, safety interlocks, alarms, and other hazard prevention devices will be maintained, calibrated, and tested for functionality on a regular basis in accordance with standard industrial practices and recommendations of the manufacturers.

EMERGENCY PROCEDURES

Authorized laser users will be familiar with the Building Emergency Plan, location of emergency equipment, and emergency procedures for fires, earthquakes, and evacuations. Emergency shut-off procedures for lasers consist of shutting off the electrical power to the laser system. The main electrical shut-off switches to the laser are posted on the exits.

ANNUAL REVIEW SCHEDULE

Will be one year from approval date. If new hazards have been introduced, a full EH&S review will be required. If no changes other than users have been made (an update of the users list will be sent to LSO), renewal can be granted by user’s division safety coordinator.

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