原子能科学技术2017，Vol.51Issue(3)：439-443,5.DOI:10.7538/yzk.2017.51.03.0439
压水堆嬗变长寿命裂变产物的弹棒事故安全性研究
Study of Rod Ejection Accident Safety of PWR for Long-lived Fission Product Transmutation
摘要
Abstract
In order to carry out transient safety analysis of PWR cores used for long-lived fission product (LLFP) transmutation ,a code system was developed based on CASMO-4 ,RSIM and modified NLSANMT/COBRA-4 .Using this system ,the safety feature of LLFP transmuting PWR in rod ejection accidents was studied and the power evolution and maximum fuel center temperature variation were analyzed at both BOL and EOL .The numerical results show that loading 99 Tc leads to lower peaking power because of more negative moderator temperature coefficient ,w hile loading 129 I results in higher peaking power .Also ,loading 99 Tc and 129 I will make fuel center temperature rise up about 127-157 ℃ ,which is still within the melting point of UO2 fuel .关键词
瞬态/压水堆/嬗变/长寿命裂变产物Key words
transient/PWR/transmutation/long-lived fission product分类
能源科技引用本文复制引用
马云帆,吴宏春,曹良志..压水堆嬗变长寿命裂变产物的弹棒事故安全性研究[J].原子能科学技术,2017,51(3):439-443,5.基金项目
国家自然科学基金资助项目(11522544 ) （11522544 ）
