IMIS

This article deals with the information system in Germany. For the Swiss IMIS system, see Intercantonal Measurement and Information System .

IMIS is the abbreviation for Integrated Measurement and Information System , an environmental information system for monitoring radioactivity in Germany.

history

Environmental radioactivity has been monitored in Germany since the 1950s . This was done until 1986 by various authorities who did not coordinate with one another. On the occasion of the confusion during the Chernobyl reactor disaster in April 1986, this problem was recognized and resolved by bundling measurement activities via IMIS. In the past, the measuring devices were affiliated to the warning offices under the name WADIS.

Task of IMIS

Normal environmental radioactivity is monitored permanently and nationwide by means of measuring buoys and unmanned stations. Floor areas and food are also monitored. On the basis of the extensive measurements and dispersion simulation models ( Program for the Assessment of Radiological Consequences (PARK), RODOS), IMIS enables a quick overview of the extent of the contamination and the resulting radiation exposure of the population in the event of a release of radioactivity . IMIS thus forms the basis for decisions on effective protection of the population and the environment.

Measurements

The measurements of water and food are carried out in different laboratories. The radiation exposure (local dose rate ) of the air and the soil surface is measured at around 1800 stations by the Federal Office for Radiation Protection (BfS) with the help of the ODL measuring network . As a rule, the data is queried once a day from six computers in the ODL measuring network, compressed and transferred to the IMIS. If the level is exceeded, the measuring points immediately report the data they have collected to the BfS. The federal states also operate their own radioactivity measurement networks around the nuclear facilities , the data of which is entered into IMIS.

The North and Baltic Seas are monitored by 9 measuring buoys from the Federal Maritime and Hydrographic Agency ( MARNET measuring network). The data is transmitted via satellite. In addition, measuring vehicles and a helicopter squadron are available for emergencies.

With regard to measurements in or outside of an incident (es), a distinction is made between the intensive and routine measurement programs. These are documented in guidelines for monitoring radioactivity in the environment according to the Radiation Protection Precautionary Act.

Web links

• Overview website for ionizing radiation at the Federal Office for Radiation Protection with additional links, e.g. B. on current measured values
• official BfS brochure on IMIS (PDF file; 619 kB)
• Display online daily mean values ​​of the ODL measuring network
• How IMIS works (PDF file; 52 kB)

Individual evidence

1. ↑ General administrative regulation for IMIS of December 13, 2006 (BAnz. 2006, No. 244a) ( Memento of the original of December 20, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.  
2. ↑ Answer to question 3 in BT-Drs. 18/7996
3. ↑ Federal Maritime and Hydrographic Agency: MARNET: Marines Meeresumweltmessnetz for monitoring the marine environment. Retrieved March 19, 2020 .