第32卷
第1期
2012年3月
核科学与工程
Nuclear Science and Engineering
ITER实验包层吹洗气前处理
系统的FMECA研究
付万发，罗德礼，唐涛
（表面物理与化学重点实验室，四川绵阳621907）
Vol.32 Mar.
No.1 2012
摘要：实验包层(TBM)输出吹洗气前处理系统将安装在国际热核聚变实验堆(ITER)装卸TBM的通道内(PortCell)，它的功能是将TBM输出的含氛吹洗气进行过滤、除HTO、冷却、调流量等处理，处理后输出到氮提取系统。介绍了该系统的工艺过程和系统组件，以氛释放危险为判据，对该系统进行 FMECA（故障模式、影喇及危害性分析），并作出分析表。找出了几种故障模式或薄弱环节，进行了尝试性的风险优先数和故障模式危害度计算，提出了设计改进措施和使用补偿措施；最后确定了需要重点关注的4种需导致释非正常过量释放的潜在故障模式。这些故障分析为降低系统氮过量释放危险设计提供了依据，也为TBM其他附属氮系统的安全分析奠定了基础。
关键调：实验包层氰系统；氯释放；安全分析；故障模式、影响及危害性分析
中图分类号：TL364+.1
文章标志码：A
文章编号：0258-0918(2012)01-0050-06
FMECA about pre-treatment system for purge
gasoftestblanketmoduleinITER
FUWan-fa,LUO De-li,TANG Tao
(National Surface Physics and Chemistry Laboratory, Mianyang of Sichuan Prov. 621907, China)
Abstract: The pre-treatment system for purge gas of TBM will be installed in Port Cell for installing TBM in ITER,thefunction of which includes filtering purge gas, removing HTO, cooling, and adjusting flow rate, etc. The purge gas treated will be conveyed into TES （Tritium Extraction System).The technological process and system components in pre-treatment system were introduced.Tritium releasing risk was regarded as failure criterion; failure mode, effects and criticality analysis (FMECA) were carried out and several weaknesses or failure mode in the system were found. Besides, risk priority number (RPN) and failure mode criticality were calculated. Finally, some design improvement measures and usage compensation measures were
收稿日期：2010-12-08；修回日期：2011-12-29
基金项目：国家磁约束核聚变能研究专项(2010GB112001)
作者简介：付万发（1976—），男，黑龙江鹤岗人，博士研究生，核燃料循环与材料专业 50