222Rn Measurement System with Standard Source in Ukraine

Abstract

The paper analyses radon (222Rn) hazardous industrial facilities and dwellings in Ukraine. The importance of control and monitoring as well as integrity and accuracy of the 222Rn measurements at the radon hazardous facilities are highlighted. Development of the standard source of 222Rn based on the uranium ore is described including research of uranium ore samples, their specific activity and radon emanation rate and optimization of the construction. The developed primary standard source provides stable 222Rn emanation, effectiveness and reliability of operation, safety of environment, available and cost-effective material generating 222Rn. The operation of the standard sources as a part of the State primary standard of 222Rn volumetric activity is described in the paper. Options of the standard source applications for calibration of the measurement tools for 222Rn volumetric activity are also demonstrated including mobile radioecological monitoring stations required for development of effective actions minimizing 222Rn levels in the environment of radon hazardous industrial facilities and living premises.