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
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Wavelength (μ m) |
Exposure Duration, ts |
MPE |
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(J cm-2) |
(W cm-2) |
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0.180 to 0.302 |
10-9 to 3 x 104 |
3 x 10-3 |
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0.303 |
10-9 to 3 x 104 |
4 x 10-3 |
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0.304 |
10-9 to 3 x 104 |
6 x 10-3 |
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0.305 |
10-9 to 3 x 104 |
10 x 10-3 |
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0.306 |
10-9 to 3 x 104 |
16 x 10-3 |
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0.307 |
10-9 to 3 x 104 |
25 x 10-3 |
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0.308 |
10-9 to 3 x 104 |
40 x 10-3 |
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0.309 |
10-9 to 3 x 104 |
63 x 10-3 |
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0.310 |
10-9 to 3 x 104 |
0.1 |
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0.311 |
10-9 to 3 x 104 |
0.16 |
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0.312 |
10-9 to 3 x 104 |
0.25 |
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0.313 |
10-9 to 3 x 104 |
0.40 |
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0.314 |
10-9 to 3 x 104 |
0.63 |
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0.315 to 0.400 |
10-9 to 10 |
0.56 t¼ |
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0.315 to 0.400 |
10 x 3 x 104 |
1.0 |
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NOTE: To calculate MPE, use the J cm-2 value shown or 0.56 t¼, whichever is lower.
Visible and Near Infrared
|
Wavelength (μ m) |
Exposure Duration, ts |
MPE |
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(J cm-2) |
(W cm-2) |
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0.400 to 0.700 |
10-9 to 18 x 10-6 |
0.5 x 10-6 |
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0.400 to 0.700 |
18 x 10-6 to 10 |
1.8 t¾ x 10-3 |
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0.400 to 0.550 |
10 to 104 |
10 x 10-3 |
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0.550 to 0.700 |
10 to T1 |
1.8 t¾ x 10-3 |
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0.550 to 0.700 |
T1 to 104 |
10CB to 10-3 |
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0.400 to 0.700 |
104 to 3 x 104 |
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CB x 10-6 |
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0.700 to 1.050 |
10-9 to 18 x 10-6 |
0.5CA x 10-6 |
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0.700 to 1.050 |
18 x 10-6 to 103 |
1.8CA t¾ x 10-3 |
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0.700 to 1.050 |
103 to 3 x 104 |
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320CA x 10-6 |
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1.050 to 1.400 |
10-9 to 50 x 10-6 |
5Cc x 10-6 |
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1.050 to 1.400 |
50 x 10-6 to 103 |
9.0Cc t¾ x 10-3 |
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1.050 to 1.400 |
103 to 3 x 104 |
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1.6Cc x 10-3 |
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NOTES: |
1. |
See Section 315.Tables D & E for limiting apertures (see ANSI Z136.1 pg. 44). |
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2. |
For multiple pulses, apply correction factor Cp given in Section 315.Table C. |
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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 |
|
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(J cm-2) |
(W cm-2) |
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1.400 to 1.500 |
10-9 to 10-3 |
0.1 |
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1.400 to 1.500 |
10-3 to 10 |
0.56 t¼ |
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|
1.400 to 1.500 |
10 to 3 x 104 |
|
0.1 |
|
1.500 to 1.800 |
10-9 to 10 |
1.0 |
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1.500 to 1.800 |
10 to 3 x 104 |
|
0.1 |
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1.800 to 2.600 |
10-9 to 10-3 |
0.1 |
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1.800 to 2.600 |
10-3 to 10 |
0.56 t¼ |
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1.800 to 2.600 |
10 to 3 x 104 |
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0.1 |
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2.600 to 103 |
10-9 to 10-7 |
10 x 10-3 |
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2.600 to 103 |
10-7 to 10 |
0.56 t¼ |
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2.600 to 103 |
10 to 3 x 104 |
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0.1 |
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NOTES: |
1. |
See Section 315.Tables D & E for limiting apertures (see ANSI Z136.1 pg. 44). |
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2. |
For multiple pulses, apply correction factor Cp given in Section 315.Table C. |
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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). |
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2. |
For repeated (pulsed) exposures, see ANSI Z136.1. |
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3. |
For purposes of this Section 315.Table A, the following abbreviations or symbols are used: |
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μm |
= |
micrometers |
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ts |
= |
time in seconds |
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J |
= |
joules |
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W |
= |
watts |
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cm |
= |
centimeters |
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