Anybody who in their work with open sources or with equipment that emits ionising radiation has a chance of more than 1 millisievert (mSv) of exposure per year (over and above normal background radiation) is considered to be a radiological worker. The exposure standards for radiological workers are different than those for non-radiological workers (colleagues, members of the public).
Table 1 gives an overview of the dose limits per year for radiological and other workers and the surroundings according to the Radiation Protection Decree.
Table 1. Statutory dose limits (mSv) per year
16 and 18 years
|Other people within the location||Members of the public outside the location|
|Effective dose||20 1)||6||1||0.1|
|Skin||500 2)||150 2)||50 2)||-|
|Hands, forearms, feet and ankles||500||150||50||-|
1) Additional limit values apply to pregnant staff.
2) Average over non-exposed skin surface of 1 cm.
3) Radiological worker is a:
- Category A employee if there is a reasonable chance of the exposure being greater than 3/10 of the limit;
- Category B employee if the chance of the exposure being greater than 3/10 of the limit is very small.
Please note: Separate regulations apply to category A and category B employees with respect to medical examination, medical supervision, dose registration and reporting.