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Environmental measurements

The radiological situation in Germany’s environment is monitored continuously using the automatic monitoring networks operated by the BfS and other institutions, as well as through the analysis of environment samples in laboratories. In a radiological emergency, measurements are stepped up and supplemented with mobile measuring systems on the ground or in the air. All measurement results are brought together within the IMIS Information System. European and global measuring networks such as the International Monitoring System of the CTBTO supplement the measurements at international level.

User working with the Integrated Measuring and Information System

The Integrated Measuring and Information System (IMIS)

The task of IMIS is to continuously monitor the radioactivity in the environment in order to detect even minor changes over a large area in a fast and reliable manner and to recognize long-term trends. All results are evaluated, consolidated, prepared and presented in clear documents.

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Map of the world

International monitoring networks

European Union member states have committed to continuously monitor radioactivity in the environment. The international monitoring network of the Comprehensive Nuclear-Test-Ban Treaty Organisation (CTBTO) provides data on radioactivity in the environment worldwide.

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Nuclear cloud right after ignition of a nuclear bomb

Monitoring the Comprehensive Nuclear-Test-Ban Treaty (CTBT)

The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is one of the pivotal international treaties to prevent the proliferation of nuclear weapons. Although it has not yet entered into force, setting up and successfully operating a global network to monitor the test ban has started some 20 years ago.

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All radionuclide measurement stations of CTBTO are recorded on the world mapSource: © CTBTO (https://www.ctbto.org/our-work/ims-map)

Trace analysis worldwide: Results associated with the accident in Fukushima

The CTBTO has a worldwide monitoring network. Once completed it consists of 80 radionuclide measurement stations for detection of radionuclides bound to airborne dust. In addition, 40 of these stations are equipped with systems for the measurement of radioactive xenon. One of these radionuclide monitoring stations is operated by the Federal Office for Radiation Protection (BfS) on Mt Schauinsland near Freiburg im Breisgau. After the accident at the nuclear power plant in Fukushima, Japan, in 2011, the station was able to detect radioactivity from Fukushima at trace levels.

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