- What are electromagnetic fields?
- Static and low-frequency fields
- What are static and low-frequency electric and magnetic fields?
- Direct and alternating voltage
- Effects of static and low-frequency fields
- Reports & Evaluations
- Radiation protection relating to the expansion of the national grid
- Basics transfer of electrical power
- High-frequency fields
- What are high-frequency fields?
- Applications high-frequency fields
- Radiation protection in mobile communication
- What is mobile communication?
- Reports and evaluations
- What is optical radiation?
- UV radiation
- What is UV radiation?
- Sun but safe!
- Effects of UV radiation
- Protection against UV radiation
- UV index
- Infrared radiation
- What is ionising radiation?
- Radioactivity in the environment
- Where does radioactivity occur in the environment?
- What is the level of natural radiation exposure in Germany?
- Air, soil and water
- Building materials
- Industrial residues (NORM)
- BfS laboratories
- Applications in medicine
- Applications in daily life and in technology
- Radioactive radiation sources in Germany
- Register high-level radioactive radiation sources
- Type approval procedure pursuant to RöV and StrlSchV
- Cabin luggage security checks
- Radioactive materials in watches
- Ionisation smoke detectors (ISM)
- What are the effects of radiation?
- Acute radiation damage
- Effects of selected radioactive materials
- Consequences of a radiation accident
- Cancer and leukaemia
- Genetic radiation effects
- Individual radiosensitivity
- Epidemiology of radiation-induced diseases
- Ionising radiation: positive effects?
- Risk estimation and assessment
- Radiation protection
- Basic informations
- Occupational radiation protection
- Nuclear accident management
- What happens in an emergency?
- Federal and state tasks
- In the event of an emergency
- Measuring networks
- Exercises for emergency situations
- Nuclear accidents
- Defence against nuclear hazards
- Service offers
- Radon measurements
- Incorporation monitoring
- Biological dosimetry
- Online library
- About us
- Science and research
- Research concept
- Scientific collaborations
- EU research framework programme
- BfS research programme
- Third-party funded research
- Departmental research
- Selected research projects
- Selected research results
- Professional opinions
- Laws and regulations
- BfS Topics in the Bundestag
occupationally exposed personsshow / hide
According to the provisions of the Radiation Protection Ordinance (StrlSchV) persons are considered occupationally exposed to radiation when they are exposed to radiation while pursuing their profession or being trained and when the dose limit values set out in the provisions of the Radiation Protection Ordinance are exceeded in that case. Two groups of occupationally exposed persons are differentiated.
- Persons of category A when the radiation exposure in the calendar year may lead to a body dose above 30% of the dose limit values set out in the StrlSchV.
- Persons of category B when the radiation exposure in the calendar year may lead to a body dose between 5% and 10% and 30% of the dose limit values set out in the StrlSchV.
For occupationally exposed persons under age 18 and the unborn child who is exposed to radiation on account of the mother’s occupation lower dose limit values apply.
Odds Ratio (OR)show / hide
The Odds Ratio gives the radio with which "cases" are exposed relatively to controls.
- With an OR of 1 the part of exposed persons in both groups has been equal.
- With OR less than 1 the part of exposed persons under the cases was less, with OR higher than 1 more than under the controls.
By means of a significance test one can check how statistically important this difference is. For rare diseases the OR can be set equal to the RR.
Ooliteshow / hide
Rock composed of numerous oolites. An oolite is a ball-shaped particle of lime or other substances, from which concentric shells have separated around a nucleus of crystallisation.
Open radioactive substances show / hide
All radioactive substances with the exception of the sealed radioactive substances.
Operating manualshow / hide
Collection of all operational rules.
Operation for keeping the mine open show / hide
Operation for keeping the mine open is the operation of a repository without emplacement taking place, maintaining all arrangements for radiation protection and mining safety.
Operator show / hide
Owner of a licence for the operation of a nuclear facility or installation.
Organ doseshow / hide
Overlying rockshow / hide
Totality of the solid layers in the hanging wall (rock above an examined rock layer) of the Asse salt anticline up to the surface (post Zechstein Subdivision).
Overlying stratumshow / hide
Rock overlying a reference layer.