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

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Englischsprachiges Glossar

'Tiefenaufschluss' show / hide

Area below the 800-m level in the Asse mine.

Tectonicsshow / hide

Science of the structure of the earth’s crust and the movements of the single crust parts.

Teletherapy show / hide

Treatment of diseases by irradiation of the body from outside.

Temelinshow / hide

Nuclear power plant in the South Bohemian Temelin, Czech Republic. The existence of the NPP is questionable from the point of view of safety and economy and is accompanied by a transboundary environmental impact assessment (EIA).

Temporary storage facility show / hide

Installations where spent fuel elements are stored so long on the site of a nuclear power plant in suitable transport and storage containers until a decentralised interim storage facility is available, at maximum for 6 to 8 years, however.

Teratogenic show / hide

Damaging the fruit, causes deformities of the seedling due to chemical and physical agents.

Terminal points (hard, weak) show / hide

Types of diseases investigated in epidemiological studies. Among the "hard" terminal points are e. g. overall mortality rate, selected causes of death, cancer diseases, etc. while "weak" terminal points are diseases such as headaches, sensitivities disturbances, etc..

Terrestrialshow / hide

Term for all processes, powers and forms existing on solid land.

Terrestrial radiation show / hide

Radiation emanating from natural radionuclides and their decay products available in the soils and rocks of the earth's crust.

Tesla show / hide

Tesla is the unit of magnetic flux density.

TETRA show / hide

Terrestrial Trunked Radio. European radio standard. TETRA is used for the Digital Radio of Security Authorities and Organisations at frequencies between 380 and 395 MHz.

Thermoluminescence dosimeter show / hide

Thermoluminescence dosimeters (TLD) can be used to detect ionising radiation (radioactivity). Thermoluminescence describes the capability of a material to emit the previously stored energy in the form of light when the material is heated. The level of ionising radiation is determined by evaluating the quantity of emitted light. This is directly proportional to the energy taken up originally.

Threshold value show / hide

Damage occurs only when a minimum dose is exceeded.

Thyratron show / hide

Gas-filled switch duct similar to an amplifier duct (triode) whose main discharge is initiated by a grid-like electrode. These ducts are used for the impulse modulation of magnetrons and other oscillators and as quick electronic switches. Larger structural forms serve for engine management systems, controlled rectifiers or to handle more efficient switches.

Time Division Multiple Access (TDMA)show / hide

Procedure which enables within the scope of digital telecommunication to transfer several calls simultaneously on one transmitting frequency. Each call is assigned one time division in which the temporally distributed transmitting signals (digitised and compressed language "packages") are transmitted. In the GSM system, for instance, 8 time divisions of 577 µs each are used to transmit up to 8 talks simultaneously.

Top of salt dome show / hide

Top of salt dome is a horizontal surface above salt deposits or salt domes generated by "leaching". Mostly a so-called cap rock is situated on the top of salt dome consisting of the hardly soluble components of the leached off salt.

Total activityshow / hide

Number of decays per time unit occurring in the radioactive waste.

Track haulage deviceshow / hide

Device for moving the platform lorries, arranged between the tracks.

Transfer hallshow / hide

Hall in which the transport units are taken from railway wagons and lorries or respectively the exchange pallets are returned to the wagons or lorries.

Transgressionshow / hide

Assaults from the sea over large areas of the mainland.

Transmitting power show / hide

Electrical power emitted from an antenna.

Transport licenses show / hide

With respect to nuclear transports, transport licences are granted by the Federal Office for Radiation Protection if the legal prerequisites are complied with, in particular the precaution against damage according to the state-of-the-art of science and technology.

Transport palletshow / hide

Reusable device to transport cylindrical waste packages.


Transport unitsshow / hide

Unit consisting of certain container types and exchange pallets with waste packages.


Transport vehicleshow / hide

All-wheel drive vehicle, not rail-borne.

Treatment processshow / hide

Conditioning radioactive waste means treating it in a special manner with the help of special procedures, such as crushing, packaging, drying, combusting, melting or cementing. The end product may then be disposed of in Konrad if it is in compliance with the Konrad waste acceptance requirements. These waste packages are especially permitted for Konrad but for no other repository.

Tritium show / hide

Radioactive isotope of hydrogen with 2 neutrons and 1 proton in the nucleus, forming the decay products helium-3 and emitting beta radiation during decay, physical half-life ca. 12.3 years, effective half-life when taken up once ca. 10 days. Tritium can replace hydrogen in all metabolic processes, no enrichment over the food chain.

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