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MITIGATION OF THREE WATER SUPPLIES WITH HIGH RADON EXPOSURE TO THE EMPLOYEES

机译：缓解员工高RA暴露的三种供水

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摘要

A comprehensive survey to determine the occupational radiation exposure in water supplies and spas was conducted in the federal state of Upper Austria. The study comprises 45 water supplies. The limit for radon exposure of 6 MBq h m~(-3) was exceeded by two water supplies (WS 33 and WS 42). In one water supply (WS 29), the level of 2 MBq h m~(-3) was exceeded. These water supplies were mitigated. Prior to mitigatiori the main radon sources were identified. Mitigation measures were: evacuation of the outlet air of the vaporiser by means of a fan, installation of a fan in the exhaust air duct of the compensating reservoir, sealing of drain shafts and mechanical ventilation of the office. In all water supplies, the radon exposure was reduced to below 0.8 MBq h m~(-3) at a cost of approx. € 750 to € 1000.
机译：在上奥地利州进行了一项全面的调查，以确定供水和水疗中心的职业辐射暴露。该研究包括45个供水。两次供水（WS 33和WS 42）超过了6 MBq h m〜（-3）的ra暴露极限。在一个供水（WS 29）中，水位超过2 MBq h m〜（-3）。这些供水减少了。在缓解之前，主要的sources源已经确定。缓解措施包括：通过风扇排空蒸发器的出口空气，将风扇安装在补偿容器的排气管道中，密封排放轴和办公室的机械通风。在所有供水中，the的暴露量都降低到了0.8 MBq h m〜（-3）以下，而成本却降低了约3 MB。 750欧元至1000欧元。

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