Abstract Selective Production of Exotic Species is an innovative plant for advanced nuclear physic studies. A radioactive beam, generated by using an UCx target-ion source system, is ionized, selected and accelerated for experimental objects. Very high vacuum conditions and appropriate safety systems to storage exhaust gases are required to avoid radiological risk for operators and people. In this paper, Failure Mode, Effects, and Criticality Analysis of a preliminary design of high activity gas recovery system is performed by using a modified Fuzzy Risk Priority Number to rank the most critical components in terms of failures and human errors. Comparisons between fuzzy approach and classic application allow to show that Fuzzy Risk Priority Number is able to enhance the focus of risk assessments and to improve the safety of complex and innovative systems such as those under consideration.

中文翻译：

---

SPES实验装置放射性气体回收系统的模糊FMECA分析

摘要 外来物种的选择性生产是先进核物理研究的创新工厂。使用 UCx 目标离子源系统产生的放射性束被电离、选择和加速用于实验对象。需要非常高的真空条件和适当的安全系统来储存废气，以避免对操作员和人员造成辐射风险。在本文中，高活度气体回收系统的初步设计的失效模式、影响和严重程度分析是通过使用修改后的模糊风险优先级数来根据故障和人为错误对最关键的组件进行排序。