TITLE 32: ENERGY
CHAPTER II: ILLINOIS EMERGENCY MANAGEMENT AGENCY
SUBCHAPTER b: RADIATION PROTECTION
PART 315 STANDARDS FOR PROTECTION AGAINST LASER RADIATION
SECTION 315.TABLE E MEASUREMENT APERTURES FOR CLASSIFICATION



Section 315.TABLE E   Measurement Apertures for Classification

 

Spectral Region

(μm)

Duration

(s)

Aperture Diameter

(mm)

0.180 to 0.302

10-9 to 0.25

1.0

 

0.25 to 3 x 104

3.5

0.302 to 2.8

10-9 to 3 x 104

50.0

2.8 to 102

10-9 to 0.3

1.0

 

0.3 to 10

1.5 t3/8  

 

10 to 3 x 104

3.5

102 to 103

10-9 to 3 x 104

11.0

 

 

 

NOTES:

1.

These apertures are used for the measurement of optical power or energy for purposes of laser classification

 

 

 

 

2.

When the laser output is intended to be viewed with optics (excluding ordinary eyeglasses) or the laser safety officer determines that there is reasonable probability of accidental viewing with optics, a 50 mm aperture is used if the following conditions are met.

 

 

 

 

A)

Viewing with optics presents a more severe hazard than unaided viewing.

 

 

 

 

B)

The viewing time is sufficient to constitute a hazard.

 

 

 

 

3.

Under normal conditions these exposure durations would not be used for classification (see ANSI Z136.1 (Table 9)).

 

 

 

 

4.

For purposes of this Section 315.Table E, the following abbreviations or symbols are used:

 

μm

=

micrometers

 

s

=

seconds

 

mm

=

millimeters

 

ts

=

time in seconds