 |
Michigan Administrative Code (Last Updated: November 16, 2016) |
 |
Department LR. Licensing and Regulatory Affairs |
|
MIOSHA |
|
Chapter Ionizing Radiation Rules Part 1 to Part 15 |
|
Part 7. MEDICAL X-RAY INSTALLATIONS |
Section 325.5358. Appendix A. Table 2.
All data is extracted from pdf, click here to view the pdf.
-
Distances at which shielding may not be required for medical radiographic installations.*
HIGH WORKLOAD HOSPITALS RADIOLOGY
MODERATE
LOW WORKLOAD
OFFICES
WORKLOAD CLINICS OFFICES
Anticipated Workload
250-1000 mA-
min/wk
15-250 mA-min/wk
0-15 mA-min/wk
DISTANCE IN FEET FROM X-RAY TUBE TO NEAREST OCCUPIED AREA
PRIMARY BEAMS
25 - 200
10 - 50
6 - 25
Area controlled
Area non-controlled
80 - 300
25 - 150
15 - 50
SECONDARY RADIATION
Area controlled
10 - 25
3 - 15
0 - 10
Area non-controlled
30 - 80
10 - 40
15 - 15
* This table is provided only as a guideline to emphasize the need for protective shielding under most circumstances in typical installations. Distances may vary considerably depending upon many uncontrollable factors. Shielding is the preferred method of radiation protection because it can be precisely calculated and controlled.
History: 1954 ACS 85, Eff. Dec. 3, 1975.