Section 18.85.675. Exposure level limits.

The maximum permissible exposure levels for laser radiation are presented in Table VII.  
                                  TABLE VII
                   MAXIMUM PERMISSIBLE EXPOSURE LEVELS FOR
                      LASER RADIATION AT THE CORNEA FOR
                       DIRECT ILLUMINATION OR SPECULAR
                             REFLECTION AT WAVE-
                               LENGTH = 6943 A
                                       NON-Q-
                 Q-SWITCHED           SWITCHED           CONTINUOUS
              PULSE 1 nsec,-1      PULSE 1 usec.-           WAVE
                   usec.              0.1 sec.           EXPOSURES
 Lighting       P.R.F. 0.1 sec.
Conditions        (j/cm2)             (j/cm2)             (W/cm2)
 Daylight        5.0 x 10-8          5.0 x 10-7          5.0 x 10-5
3 mm pupil
Laboratory       2.0 x 10-8          2.0 x 10-7          2.0 x 10-5
5 mm pupil
  Night          1.0 x 10-8          1.0 x 10-7          1.0 x 10-5
7 mm pupil

Authorities

46.03.020;46.03.260

Notes

Authority

AS 46.03.020 AS 46.03.260 Editor's note: These levels can be adjusted for other wavelengths by using the graph of energy transmitted to and absorbed by the retina (Figures I and II). Figure II may be normalized at L 6943 A. Figure I is applicable to pulsed lasers and Figure II to c.w. lasers. The adjusted levels shall not exceed the corresponding levels in Table VII by a factor greater than ten. Maximum permissible exposure levels for the skin shall not exceed the daylight levels for the eye (Table VII) by a factor of more than 105.

History

Eff. 9/16/71, Register 39