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 06 - RADIATION CONTROL - X-RAY IMAGING IN THE HEALING ARTS
Appendix 6 CCR 1007-1-6-I - TABLE OF HALF VALUE LAYERS FOR A SPECIFIED kVp AND SYSTEM
X-Ray Tube Voltage (kilovolt peak) |
||||
Design Operating Range |
Measured Operating Potential |
Minimum HVL (mm in Aluminum) |
||
Specified Dental Systems \1\ |
Other X-Ray Systems \2\ |
Other X-Ray Systems \3\ |
||
Below 51 |
30 |
1.5 |
0.3 |
0.3 |
40 |
1.5 |
0.4 |
0.4 |
|
50 |
1.5 |
0.5 |
0.5 |
|
51 to 70 |
51 |
1.5 |
1.2 |
1.3 |
60 |
1.5 |
1.3 |
1.5 |
|
70 |
1.5 |
1.5 |
1.8 |
|
Above 70 |
71 |
2.1 |
2.1 |
2.5 |
80 |
2.3 |
2.3 |
2.9 |
|
90 |
2.5 |
2.5 |
3.2 |
|
100 |
2.7 |
2.7 |
3.6 |
|
110 |
3.0 |
3.0 |
3.9 |
|
120 |
3.2 |
3.2 |
4.3 |
|
130 |
3.5 |
3.5 |
4.7 |
|
140 |
3.8 |
3.8 |
5.0 |
|
150 |
4.1 |
4.1 |
5.4 |
|
\1\ Dental x-ray systems designed for use with intraoral image receptors and manufactured after December 1, 1980. \2\ Dental x-ray systems designed for use with intraoral image receptors and manufactured before or on December 1, 1980, and all other x-ray systems subject to this section and manufactured before June 10, 2006. \3\ All x-ray systems, except dental x-ray systems designed for use with intraoral image receptors, subject to this section and manufactured on or after June 10, 2006. |