Schedule
| 1 | 2 | 3 |
|---|---|---|
| Cobalt 60 | 0·1 | 1 |
| Nickel 63 | 0·1 | 1 |
| Caesium 137 | 0·1 | 1 |
| Thorium (any isotope of) | 0·1 | 1 |
| Thallium 204 | 0·1 | 1 |
| Radium 226 | 0·1 | 1 |
| Uranium (any isotope of) | 0·1 | 1 |
| Carbon 14 | 1 | 10 |
| Chlorine 36 | 1 | 10 |
| Promethium 147 | 5 | 30 |
| Krypton 85 | 10 | 100 |
| Tritium | 150 |
| 1 | 2 | 3 |
|---|---|---|
| Cobalt 60 | 0·1 | 1 |
| Nickel 63 | 0·1 | 1 |
| Caesium 137 | 0·1 | 1 |
| Thorium (any isotope of) | 0·1 | 1 |
| Thallium 204 | 0·1 | 1 |
| Radium 226 | 0·1 | 1 |
| Uranium (any isotope of) | 0·1 | 1 |
| Carbon 14 | 1 | 10 |
| Chlorine 36 | 1 | 10 |
| Promethium 147 | 5 | 30 |
| Krypton 85 | 10 | 100 |
| Tritium | 150 |