On 25 April 2017, the operator responsibilities for the Asse II mine as well as the Konrad and Morsleben repositories were transferred to the Federal Company for Radioactive Waste Disposal (Bundesgesellschaft für Endlagerung mbH, BGE). This website of the Federal Office for Radiation Protection (BfS) will therefore no longer be updated and displays the status as on 24 April 2017. You will find current information at the BGE: www.bge.de

Navigation and service


Englischsprachiges Glossar

Facies show / hide

Totality of features of a sediment rock such as petrologic structure or fossil content.

Facility, nuclearshow / hide

Civilian facility including its premises, buildings and equipment, where radioactive material is produced, processed, used, handled, stored or disposed of to an extent which requires making safety considerations.

Fall-out show / hide

Radioactive material from the atmosphere having reached the earth in the form of smallest particles and deposited through precipitation and sedimentation of aerosols, having for instance originated in nuclear tests.

Far field show / hide

From a certain distance to a radiation source on, the electromagnetic field is termed far field. In the far field the electric and magnetic field are closely coupled to each other and can be converted into each other using a constant factor.

Faultshow / hide

Dividing surface in the rock where the adjoining rock strata are pushed together due to processes in the earth’s interior (e.g. vertically displaced).

Feasibility study show / hide

In a feasibility study it is investigated if and under which conditions a planned elaborate investigation can be successful.

Federal Network Agency(Bundesnetzagentur, BNetzA) show / hide

Federal Network Agency for Electricity, Gas, Telecommunications, Post and Railways. In July 2005 the regulatory authority for telecommunications and post (RegTP) was renamed to "Federal Network Agency for Electricity, Gas, Telecommunications, Post and Railways". At the samt time its scope of duties was extended. The tasks in the area of telecommunications include e. g. the granting of site certific-ates for mobile phone base stations on the basis of the Ordinance concerning the Controls for the Limitation of Electromagnetic Fields (BEMFV). The Federal Network Agency carries out test series to control compliance with limit values as well as, in individual cases, controls of stationary amateur radio installations. Data of the site certificates of mobile phone base stations can be found in the EMF data base.

Federal order show / hide

The Laender execute federal laws by order of the Federal Government (Bundesauftragsverwaltung, federal executive administration). When judging and deciding a situation differently, the Federal Government can give a federal order to the Land relating to the decision. The responsibility for the decision made according to the order is then with the Federal Government.

Federal state collecting depot show / hide

Federal state (or Laender) collecting depots are the interim storage facilities of the Laender erected for the waste produced in the areas of medicine, technology and research. Federal state collecting depots do not accept waste produced in connection with energy supply and reprocessing.

Fertility show / hide

Sexual reproduction

Field show / hide

State of space in which each space point can be assigned to the value of a physical quantity, e. g. electric or magnetic field strength.

Fire loadshow / hide

Mass of all combustible materials in a defined room.

Fission productsshow / hide

Nuclides generating by fission or the following radioactive decay of the nuclides that have directly generated by fission.

Flatbed rail wagonshow / hide

Non-motorised rail-borne vehicle.

Floor show / hide

The mining term floor refers to a rock layer underlying a reference layer (rock layer superposing this).

Floor conveyor systemshow / hide

Rail transport system to transport the flatbed rail wagons.

Fluvialshow / hide

Worked, transported, deposited or enriched by rivers.

Follow-up show / hide

In Epidemiology, the follow-up is the observation of a group of persons (cohort) in a cohort study over a certain period of time (follow-up period). The cohort members are observed with respect to diseases (incidence follow-up) or death (mortality follow-up) by an appointed date. For the incidence follow-up, for example, cancer registries can be consulted. For deceased persons, the cause and date of death are requested at the health authorities and communities.

Food chainshow / hide

Interrelationship between organisms, where one link lives off the consumption of the previous link.

Formationshow / hide

Unit of rocks belonging together genetically. Was formerly only used in terms of stratigraphics.

Formation watersshow / hide

Aqueous solutions from the geological past stored in rock layers.

Foul air channelshow / hide

Discharge channel for used air and harmful gases.

Free-cutting worksshow / hide

Removal of bushes and shrubs, e.g. at the fence of the premises.

Frequency show / hide

Number of oscillations in a time unit. Frequency and wavelength are connected to each other.

The measure of frequency is Hertz (Hz):
1 Hz = 1 oscillation per second = 1/s.
1 kilohertz (kHz) = 1000 Hz
1 megahertz (MHz) = 1000 kHz
1 gigahertz (GHz) = 1000 MHz
1 terahertz (THz) = 1000 GHz

Fuel cycleshow / hide

Process where nuclear fuel supply of nuclear reactors and waste management is carried out, consisting of uranium mining, fuel enrichment, fuel element fabrication, reprocessing, fuel element storage and radioactive waste disposal.

Fuel element show / hide

Arrangement in which a multitude of fuel rods has been combined to form a construction unit with which the nuclear fuel is brought into the reactor.

Fuel rod show / hide

Geometrical shape in which nuclear fuel, coated with hull material, is brought into a reactor. Mostly several fuel rods are combined to form a fuel element (Brennelement, BE). In the case of the Krümmel nuclear power plant with a boiling water reactor 72 fuel rods form a fuel element, in the case of the pressurised water reactor of the Emsland nuclear power plant 300 fuel rods have been combined to form one fuel element.

© Bundesamt für Strahlenschutz