49 CFR § 175.706
Separation distances for undeveloped film from packages containing Class 7 (radioactive) materials
November 18, 2020
No person may carry in an aircraft any package of Class 7 (radioactive) materials required by §172.403 of this subchapter to be labeled Radioactive Yellow-II or Radioactive Yellow-III closer than the distances shown in the table below to any package marked as containing underdeveloped film.
Open Table
| Transport index | Minimum separation distance to nearest undeveloped film for various times in transit | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Up to 2 hours | 2 to 4 hours | 4 to 8 hours | 8 to 12 hours | Over 12 hours | ||||||
| Meters | Feet | Meters | Feet | Meters | Feet | Meters | Feet | Meters | Feet | |
| 0.1 to 1.0 | 0.3 | 1 | 0.6 | 2 | 0.9 | 3 | 1.2 | 4 | 1.5 | 5 |
| 1.1 to 5.0 | 0.9 | 3 | 1.2 | 4 | 1.8 | 6 | 2.4 | 8 | 3.3 | 11 |
| 5.1 to 10.0 | 1.2 | 4 | 1.8 | 6 | 2.7 | 9 | 3.3 | 11 | 4.5 | 15 |
| 10.1 to 20.0 | 1.5 | 5 | 2.4 | 8 | 3.6 | 12 | 4.8 | 16 | 6.6 | 22 |
| 20.1 to 30.0 | 2.1 | 7 | 3 | 10 | 4.5 | 15 | 6 | 20 | 8.7 | 29 |
| 30.1 to 40.0 | 2.4 | 8 | 3.3 | 11 | 5.1 | 17 | 6.6 | 22 | 9.9 | 33 |
| 40.1 to 50.0 | 2.7 | 9 | 3.6 | 12 | 5.7 | 19 | 7.2 | 24 | 10.8 | 36 |
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