International InterComparison of Radon 222 Activity Concentration Calibration Facilities
Pam Warkentin | CARST/C-NRPPEnoch ABC Ballroom
The Coalition of International Radon Associations (COIRA) organized an inter-comparison of Rn-222 (radon) activity concentrations reported by calibration laboratories. A set of three AlphaGUARDs were used as transfer reference instruments against which to compare reported Rn-222 activity concentrations. Rn-222 activity concentration calibration facilities (sometimes termed chambers) from seven countries (Australia, US, Czech, Spain, England, Sweden, Canada), and 3 continents participated in this project. The objective of the study was to provide information useful to calibration chamber operators and public health officials in the improvement of measurement and control systems, the maintenance of performance standards for measurements, and regulatory requirements for calibrations.