 |
| operating safety: 22 phrases in 11 subjects |
| Astronautics | 2 |
| Aviation | 6 |
| Energy industry | 2 |
| European Bank for Reconstruction and Development | 1 |
| General | 1 |
| Machinery and mechanisms | 1 |
| Meteorology | 1 |
| Military | 2 |
| Oil / petroleum | 2 |
| Oil and gas technology | 1 |
| Technology | 3 |