New mitigation strategies and optimization of existing systems utilizing innovative mitigation methods and techniques applied in radiation protection of the general public, workers and the environment against exposure to radon in dwellings and workplaces

The reports here are part of the RadoNorm project which receives funding from the Euratom research and training programme 2019-2020 under grant agreement No 900009. This study is part of WP 5.4 workpackage that addresses underground workplaces from the point of view of mitigation strategies for reduction of workers’s exposure. In this task, an overview of strategies and radon mitigation systems used in underground workplaces is performed with special attention paid to site specific aerosol conditions, operational and occupational limitations and mitigation systems and techniques restrictions and limitations. In-situ measurement campaigns are carried out in various underground workplaces and facilities covering specific measuring conditions such as aerosol concentration and size distribution, forced ventilation and other HVAC systems operation, air temperature and absolute air humidity affecting accuracy of occupational exposure and personal effective dose assessment and mitigation efficiency evaluation.