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How measurements work

Interpretation of measurements

Humans are permanently exposed to natural, external radiation. This consists of a terrestrial and a cosmic component. The former originates in the natural radioactive materials (radionuclides) occurring everywhere in the soil and in building materials, such as uranium, thorium or potassium (K-40). The cosmic radiation originates in space; when interacting with the atmosphere, it is significantly reduced, but a certain portion reaches the Earth’s surface. 



ODL probe: Design / Maintenance

The ODL measuring network consists of stationary probes using cable connections for power supply and for the transmission of data. In addition, "quasi-stationary" probes are also available. The stationary and quasi-stationary ODL probes are largely identical in design. They consist of two Geiger-Müller counters and an electronic analysis system.

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