TITLE 32: ENERGY
CHAPTER II: ILLINOIS EMERGENCY MANAGEMENT AGENCY
SUBCHAPTER b: RADIATION PROTECTION
PART 315 STANDARDS FOR PROTECTION AGAINST LASER RADIATION
SECTION 315.TABLE A MPE FOR OCULAR EXPOSURE (INTRABEAM VIEWING)



Section 315.TABLE A MPE for Ocular Exposure (Intrabeam Viewing)

 

Ultraviolet

 

Wavelength

(μ m)

Exposure

Duration, ts

MPE

(J cm-2)

(W cm-2)

0.180 to 0.302

10-9 to 3 x 104

3 x 10-3

 

0.303

10-9 to 3 x 104

4 x 10-3

 

0.304

10-9 to 3 x 104

6 x 10-3

 

0.305

10-9 to 3 x 104

10 x 10-3

 

0.306

10-9 to 3 x 104

16 x 10-3

 

0.307

10-9 to 3 x 104

25 x 10-3

 

0.308

10-9 to 3 x 104

40 x 10-3

 

0.309

10-9 to 3 x 104

63 x 10-3

 

0.310

10-9 to 3 x 104

0.1

 

0.311

10-9 to 3 x 104

0.16

 

0.312

10-9 to 3 x 104

0.25

 

0.313

10-9 to 3 x 104

0.40

 

0.314

10-9 to 3 x 104

0.63

 

0.315 to 0.400

10-9 to 10

0.56 t

 

0.315 to 0.400

10 x 3 x 104

1.0

 

 

NOTE: To calculate MPE, use the J cm-2 value shown or 0.56 t, whichever is lower.


Visible and Near Infrared

 

Wavelength

(μ m)

Exposure

Duration, ts

MPE

(J cm-2)

(W cm-2)

0.400 to 0.700

10-9 to 18 x 10-6

0.5 x 10-6

 

0.400 to 0.700

18 x 10-6 to 10

1.8 t x 10-3

 

0.400 to 0.550

10 to 104

10 x 10-3

 

0.550 to 0.700

10 to T1

1.8 t x 10-3

 

0.550 to 0.700

T1 to 104

10CB to 10-3

 

0.400 to 0.700

104 to 3 x 104

 

CB x 10-6

0.700 to 1.050

10-9 to 18 x 10-6

0.5CA x 10-6

 

0.700 to 1.050

18 x 10-6 to 103

1.8CA t x 10-3

 

0.700 to 1.050

103 to 3 x 104

 

320CA x 10-6

1.050 to 1.400

10-9 to 50 x 10-6

5Cc x 10-6

 

1.050 to 1.400

50 x 10-6 to 103

9.0Cc t x 10-3

 

1.050 to 1.400

103 to 3 x 104

 

1.6Cc x 10-3

 

NOTES:

1.

See Section 315.Tables D & E for limiting apertures (see ANSI Z136.1 pg. 44).

 

2.

For multiple pulses, apply correction factor Cp given in Section 315.Table C.

 

3.

For information on correction factors T1, CB, CA, Cp and Cc, see Section 315.Table C.

 


Far Infrared

 

Wavelength

(μ m)

Exposure

Duration, ts

MPE

(J cm-2)

(W cm-2)

1.400 to 1.500

10-9 to 10-3

0.1

 

1.400 to 1.500

10-3 to 10

0.56 t

 

1.400 to 1.500

10 to 3 x 104

 

0.1

1.500 to 1.800

10-9 to 10

1.0

 

1.500 to 1.800

10 to 3 x 104

 

0.1

1.800 to 2.600

10-9 to 10-3

0.1

 

1.800 to 2.600

10-3 to 10

0.56 t

 

1.800 to 2.600

10 to 3 x 104

 

0.1

2.600 to 103

10-9 to 10-7

10 x 10-3

 

2.600 to 103

10-7 to 10

0.56 t

 

2.600 to 103

10 to 3 x 104

 

0.1

 

NOTES:

1.

See Section 315.Tables D & E for limiting apertures (see ANSI Z136.1 pg. 44).

 

2.

For multiple pulses, apply correction factor Cp given in Section 315.Table C.

 

 

GENERAL NOTES:

 

 

1.

 

 

The MPE for diffuse reflections at wave lengths between 0.400 and 1.400 μm is obtained by multiplying the corresponding MPEs above by CE (see Section 315.Table C for correction factors and T1).

 

2.

For repeated (pulsed) exposures, see ANSI Z136.1.

 

3.

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

 

μm

=

micrometers

 

ts

=

time in seconds

 

J

=

joules

 

W

=

watts

 

cm

=

centimeters