Interlaboratory comparisons for passive radon measuring devices at BfS.

Area of Science:

• Environmental Health
• Metrology
• Radiation Protection

Background:

• Ensuring accurate radon measurements is crucial for public health and regulatory compliance.
• Passive radon measuring devices are widely used for environmental monitoring.
• The German Federal Office for Radiation Protection (BfS) has a mandate to oversee radiation safety.

Purpose of the Study:

• To detail the methodology and outcomes of annual interlaboratory comparisons for passive radon measuring devices.
• To ensure and document the quality and reliability of radon measurement services in Germany.
• To comply with national guidelines requiring participation in these quality assurance programs.

Main Methods:

• Conducting annual interlaboratory comparisons involving various passive radon measuring devices (solid-state nuclear track detectors, electrets, activated charcoal).
• Exposing devices in a controlled radon calibration laboratory at BfS.
• Tracing radon activity concentrations back to the national standard maintained by the Physikalisch-Technische Bundesanstalt (PTB).

Main Results:

• Consistent participation and successful performance in intercomparisons by radon services demonstrate device suitability.
• The BfS calibration laboratory provides traceable and reliable radon exposure conditions.
• The program effectively validates the quality of passive radon measurement devices used commercially.

Conclusions:

• Annual interlaboratory comparisons are effective in ensuring the quality of passive radon measurements.
• Participation is essential for radon services to demonstrate the reliability of their devices for workplace monitoring.
• The BfS program upholds high standards for radon detection and measurement in Germany.