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论述了氚内照射剂量的估算和评价方法,介绍了大亚湾核电站为建立生物样品分析实验室而展开的现场调查活动。给出了 RX 反应堆厂房,KX 核燃料厂房和其他核辅助厂房在换料大修期间空气中 HTO 的变化情况,并对相应人员进行了尿氚测定,两者的结果显示了很好的一致性。三年的监测结果表明,其氚致内照剂量当量约占同期外照射产生的集体剂量的 0.33%～0.50%。对于压水堆核电站氚内照射剂量的监测管理,可采用场所空气监测结果估算集体剂量,用特殊监测的尿氚测定结果报出最大个人受照剂量。
The estimation and evaluation method of internal dose of tritium are discussed. The on-site investigation activities of Daya Bay Nuclear Power Station for establishing biological sample analysis laboratory are introduced. The changes of HTO in the air during the overhaul of the RX reactor plant, KX nuclear fuel plant and other nuclear auxiliary plants are given, and the urinary tritium determination of the corresponding personnel is given. The results show good consistency. The three-year monitoring results show that the tritium-equivalent internal dose equivalent accounts for about 0.33% -0.50% of the collective dose generated by external radiation over the same period. For the monitoring and management of the irradiation dose of tritium inside the PWR nuclear power plant, the collective dose may be estimated by using the place air monitoring result and the maximum individual dose according to the result of the special monitoring urine tritium test.