The following Table shows provisions defining or otherwise explaining expressions for the purposes of this Act—
| the appropriate Minister | section 47(1) |
| article | section 47(1) |
| the chief inspector | section 47(1) |
| contamination | section 47(5) |
| disposal | section 47(1) |
| licensee (in relation to a nuclear site licence) | section 47(1) |
| local authority | section 47(1) |
| mobile radioactive apparatus | section 3 |
| nuclear site | section 47(1) |
| nuclear site licence | section 47(1) |
| period of responsibility (in relation to a nuclear site licence) | section 47(1) |
| premises | section 47(1) |
| prescribed | section 47(1) |
| the prescribed period for determinations | section 47(1) and (2) |
| public or local authority | section 47(1) |
| radioactive material | section 1 |
| radioactive waste | section 2 |
| relevant water body | section 47(1) |
| substance | section 47(1) |
| undertaking | section 47(1) |
| waste | section 47(1) and (4). |