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Physical Control and Medical Surveillance of Exposed Workers
Business management → Radiation protection



Physical Control and Medical Surveillance of Exposed Workers (B)

General information

According to the radiation protection legislation persons working in enterprises whose radiation dose may exceed the threshold for the general population (1 millisievert per year) are considered "exposed workers". Depending on their potential annual dose we distinguish between category A (more than 6 millisievert per year) and category B (up to 6 millisievert per year).

Occupationally exposed persons have to be protected against ionising radiation in the best possible way. This includes that their personal exposure to radiation is monitored by means of suitable measurements and/or assessments ("physical control"). In the case of category A persons, medical examinations have to be carried out in addition.

Responsibility lies with the enterprise where the exposed staff is employed.

Physical control

In the handling of radiation sources the radiation exposure of exposed workers has to be monitored by means of individual dose monitoring facilities - in specific cases incorporation monitoring is required additionally. These measurements are carried out and evaluated by authorised individual dose and/or incorporation monitoring services. A list of these dosimetric servicesGerman text is available on the web pages of the Austrian Federal Ministry of Sustainability and Tourism.

For work activities involving radiation sources the Austrian ordinance on natural radiation sources, "Natürliche Strahlenquellen-Verordnung" (NatStrV), requires dose estimations. For category A workers, periodical dose assessments are necessary. Usually the individual dose is concluded from measurements carried out at the working place. In the case of aircrew members a monthly dose assessment has to be conducted for all exposed workers. In such cases the dose is determined mathematically using mathematical models and the relevant flight data.

The dose is determined by officially authorised or accredited dose monitoring stationsGerman text (work activities involving radiation sources) or by evaluation unitsGerman text (aircrew members). A list of the relevant dosimetric services is available on the web pages of the Federal Ministry of Sustainability and Tourism.

Medical surveillance

Exposed category A workers must be subjected to medical surveillance in all their fields of activity: A suitability examination and a final examination as well as regular control examinations (at least once a year) have to be carried out. The medical examinations have to be conducted by approved medical practitioners, occupational health services or hospitals. A list with the contact addressesGerman text is available on the web pages of the Federal Ministry of Labour, Social Affairs, Health and Consumer Protection.


The cost of an individual dosimeter evaluation amounts to approximately 8 euro. For other dose assessments and determinations, expenses vary depending on their types and scopes. The costs of medical examinations are usually borne by the state (Section 32 paragraph 4 of the Strahlenschutzgesetz).

Responsible department

Competent authority

Physical control and medical surveillance shall be arranged directly between the enterprise and the bodies authorised to conduct the examinations.

For the official control

Detail information


The enterprise has to commission

  • a body suited to carry out the measurements and the monitoring (dosimetric service, dose monitoring station or evaluation unit) to determine and/or assess the dose and
  • an approved medical practitioner, occupational health service or hospital for the medial examinations of exposed category A workers.

The results of the physical controls and, if required, the medical surveillance shall be

  • made available to the exposed workers
  • as well as to the Central Dose RegisterGerman text at the Federal Ministry of Sustainability and Tourism.

Usually the data are forwarded to the Central Dose Register by the body conducting the physical control and/or the medical surveillance.

Legal basis