Code of Colorado Regulations
1000 - Department of Public Health and Environment
1007 - Hazardous Materials and Waste Management Division
6 CCR 1007-1 - RULES AND REGULATIONS PERTAINING TO THE ADMINISTRATION AND ENFORCEMENT OF THE PESTICIDE APPLICATORS' ACT
Part 04 - RADIATION CONTROL - STANDARDS FOR PROTECTION AGAINST RADIATION
Appendix 6 CCR 1007-1-4G - NATIONALLY TRACKED SOURCE THRESHOLDS
The Terabecquerel (TBq) values are the regulatory standard. The curie (Ci) values specified are obtained by converting the TBq value. The Curie (Ci) values are provided for practical usefulness only and are rounded after conversion.
|
Radioactive material |
Category 1 (TBq) |
Category 1 (Ci) |
Category 2 (TBq) |
Category 2 (Ci) |
|
Actinium-227 |
20 |
540 |
0.2 |
5.4 |
|
Americium-241 |
60 |
1,600 |
0.6 |
16 |
|
Americium-241/Be |
60 |
1,600 |
0.6 |
16 |
|
Californium-252 |
20 |
540 |
0.2 |
5.4 |
|
Cobalt-60 |
30 |
810 |
0.3 |
8.1 |
|
Curium-244 |
50 |
1,400 |
0.5 |
14 |
|
Cesium-137 |
100 |
2,700 |
1 |
27 |
|
Gadolinium-153 |
1,000 |
27,000 |
10 |
270 |
|
Iridium-192 |
80 |
2,200 |
0.8 |
22 |
|
Plutonium-238 |
60 |
1,600 |
0.6 |
16 |
|
Plutonium-239/Be |
60 |
1,600 |
0.6 |
16 |
|
Polonium-210 |
60 |
1,600 |
0.6 |
16 |
|
Promethium-147 |
40,000 |
1,100,000 |
400 |
11,000 |
|
Radium-226 |
40 |
1,100 |
0.4 |
11 |
|
Selenium-75 |
200 |
5,400 |
2 |
54 |
|
Strontium-90 |
1,000 |
27,000 |
10 |
270 |
|
Thorium-228 |
20 |
540 |
0.2 |
5.4 |
|
Thorium-229 |
20 |
540 |
0.2 |
5.4 |
|
Thulium-170 |
20,000 |
540,000 |
200 |
5,400 |
|
Ytterbium-169 |
300 |
8,100 |
3 |
81 |
