Table 16.7 - Exposures to human-induced sources expressed as equivalent periods of exposure to natural sources
Source: UNSCEAR, 1993
| Source | Basis | Equivalent period of exposure to natural sources |
|---|---|---|
| Medical exposures | One year of practice at the current rate | 90 days |
| Nuclear weapons tests | Completed practice | 2.3 years |
| Nuclear power | Total practice to date | 10 days |
| One year of practice at the current rate* | 1 day | |
| Severe accidents | Events to date | 20 days |
| Occupational exposures | One year of practice at the current rate | 8 hours |
*Note: This is not the dose received in one year but the cumulative effects of discharges taking place in one year.