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| Radiographic or Radiographic-Fluoroscopic Shielding Guidelines |
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High Workload
(e.g., rooms in hospitals and in radiology and orthopedic offices) |
Moderate Workload
(e.g., rooms in medical and chiropractic offices) |
Low Workload
(e.g., rooms in podiatry and veterinary offices) |
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Up to 1000 mA-min/week |
Up to 250 mA-min/week |
Up to 15 mA-min/week |
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Lead
(inches) |
Concrete
(inches) |
Lead
(inches) |
Concrete
(inches) |
Lead
(inches) |
Concrete
(inches) |
| Operator Shields |
1/16 |
5 |
1/16 |
5 |
1/16 |
5 |
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| Primary Beams |
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| Walls |
3/32 - 1/8 |
6 - 7 |
1/16 - 1/8 |
3 - 6 |
1/16 |
3 |
| Floors |
3/32 - 1/8 |
6 - 8 |
1/16 - 3/32 |
4 - 6 |
1/16 |
4 |
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| Secondary Radiation |
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| Walls |
1/16 |
3 - 4 |
1/32 - 1/16 |
3 |
0 - 1/32 |
1 |
| Doors |
1/16 |
------- |
1/32 - 1/16 |
------- |
0 - 1/32 |
------- |
| Floors |
1/32 - 1/16 |
2.5 - 3.5 |
1/32 |
2.5 |
0 - 1/32 |
1 |
| Ceilings |
1/32 - 1/16 |
2.5 - 3.5 |
1/32 |
2.5 |
0 - 1/32 |
1 |
updated February 14, 2005
The above concrete thicknesses are based on the use of standard-density concrete with a density of 147 pounds per cubic foot.
Additional shielding design guidance
Related Documents
> BHS/HFS-852; Application for a Radiation Shielding Plan Review - 508021 bytes 
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