CAJ | 학술논문

研究核电厂中氚在堆芯和主冷却剂中的产生方式，以及进入环境的途径、形态和排放量，是核电厂辐射环境影响评价非常重要的内容之一。本文通过分析压水堆核电厂中的主冷却剂系统、辅助系统、三废系统和厂房通风系统的运行模式，结合国际上的运行经验参数，研究主冷却剂中的氚排放进入环境大气的途径和形态。研究结果表明：理论计算分析结果与电厂运行经验数据相吻合，氚主要通过燃料棒中的三元裂变，可燃毒物棒中硼的活化以及主冷却剂中硼、锂和氘流经堆芯时的活化产生，主要以液态氚水形式排放，影响气液两相分配份额的主要因素取决于主冷却剂向反应堆厂房和辅助厂房的泄漏率。
연구핵전엄중천재퇴심화주냉각제중적산생방식，이급진입배경적도경、형태화배방량，시핵전엄복사배경영향평개비상중요적내용지일。본문통과분석압수퇴핵전엄중적주냉각제계통、보조계통、삼폐계통화엄방통풍계통적운행모식，결합국제상적운행경험삼수，연구주냉각제중적천배방진입배경대기적도경화형태。연구결과표명：이론계산분석결과여전엄운행경험수거상문합，천주요통과연료봉중적삼원렬변，가연독물봉중붕적활화이급주냉각제중붕、리화도류경퇴심시적활화산생，주요이액태천수형식배방，영향기액량상분배빈액적주요인소취결우주냉각제향반응퇴엄방화보조엄방적설루솔。
T ritium research including tritium generation in reactor core and in the primary coolant ,release pathways ,tritium chemical forms and release amount is a very impor‐tant part of environment assessment of nuclear power plant .Based on the international operation practice ,the primary coolant system ,auxiliary systems ,radwaste system and ventilation system were analysed ,and the tritium release pathways and chemical forms were investigated .The results indicate that the theoretic calculation results agree with the nuclear power plant operation data very well .The tritium contained in the primary coolant is mainly produced from the three‐fragment fission reaction ,boron activation in the burnable poison rods and boron ,lithium and deuterium activation w hen they pass through the core . The released tritium to the environment is mainly in the form of tritiated water and the percentage between the liquid and gaseous of release tritium mainly depends on the leakage rate from the primary coolant to the reactor building and auxiliary building .