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OCCUPATIONAL EXPOSURE ASSESSMENT AT A THERAPEUTIC RADON SPA FACILITY IN HUNGARY
Norbert Kavasi1,2, Anita Csordas2,3, Katalin Nagy4
1National Institute for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba, Japan.
Radiation Protection Dosimetry
|July 23, 2019
Summary
Occupational exposure to radon (Rn) in a Hungarian therapeutic spa was assessed. Worker doses were found to be low, around 0.5 mSv year-1, well below regulatory limits, ensuring a safe working environment.
Area of Science:
- Environmental Health
- Occupational Health
- Radiological Protection
Background:
- Therapeutic radon spas utilize natural hot spring water for treating rheumatic conditions.
- Assessing occupational exposure to radon (Rn) is crucial in such facilities.
- Previous studies highlight the need for continuous monitoring of radon levels in spa environments.
Purpose of the Study:
- To estimate the occupational exposure of workers in a therapeutic radon spa facility.
- To investigate radon concentration and its temporal variations in workplace air.
- To determine if exposure levels comply with safety regulations.
Main Methods:
- Continuous measurement of radon concentration and radon decay products.
- Monitoring conducted in a balneotherapeutic facility at Markhot Ferenc Hospital, Hungary.
- Measurements taken in bathhouses, treatment rooms, and a consultation room during August-September 2018.
Main Results:
- Radon concentrations varied across different sites within the facility.
- Significant temporal fluctuations in radon levels were observed.
- All measured radon concentrations remained below 300 Bq m-3.
- A low equilibrium factor (0.1) was recorded.
Conclusions:
- Worker annual effective doses were estimated to be approximately 0.5 mSv year-1.
- The estimated occupational exposure is well within safe limits.
- The findings support the safety of the working environment in this therapeutic radon spa.
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