高燃耗乏燃料组件包壳氢化物应力再取向对运输安全影响的评价方法研究Study on the Evaluation Method of Hydride Stress Reorientation of High Burnup Spent Fuel Assembly Cladding on Transportation Safety
汪俊,申腾
摘要(Abstract)：
目前国内外压水堆核电厂所使用的核燃料组件逐步向长周期高燃耗转变。高燃耗组件燃料棒锆合金包壳内的氢化物应力再取向现象显著，导致包壳强度和韧性降低，在厂外运输中更易受到外部作用而破裂，失去对燃料芯块的包容限制功能。本文通过对氢化物应力再取向机理的分析，确定乏燃料包壳能够保持强度和韧性的条件，并结合具体型号的乏燃料组件运输容器设计，提出并实践了一种通过容器内温度场分析判断高燃耗乏燃料组件厂外运输条件下保持安全性的方法。
关键词(KeyWords)： 氢化物应力再取向;高燃耗乏燃料组件;厂外运输
基金项目(Foundation):
作者(Author): 汪俊,申腾
参考文献(References)：
- [1]Bilone M.C,Burtseva,et al.Baseline Studies for Ring Compression Testing of High-Burnup Fuel Cladding[R].USA:Argonne Nationnal Laboratory,2012.
- [2]Yagnik,S.K.,Kuo,R-C.,Rashid,Y.R.et al.Effect of hydrides on the mechanical properties of Zircaloy-4[C].Proceedings of the 2004 international meeting on LWR fuel performance,2004:1089.
- [3]Rashid Y R,Machiels J.A methodology for the evaluation of fuel rod failures under transportation accidents[C].Berlin Germany:14th international symposium on the Packing and Transportation of Radioactive Materials,2014.
- [4]Standard review plan for spent fuel dry storage systems at a general license facility:NRC.NUREG-1536[S].USNRC,2010.
- [5]申腾，江小川，等.干法贮存中乏燃料包壳温度限值准则及机理分析[J]．核标准计量与质量，2017(3):2-8.
- [6]Bilone M.C,Burtseva,et al.Embrittlement and DBTT of High-burnup PWR Fuel Cladding Alloys[R].USA:Argonne Nationnal Laboratory,2013.
- [7]Spent fuel project office of NRC.Interim staff guidance-11Revision 3[S].US NRC,2003.
- [8]NRC.Standard review plan for spent fuel dry storage systems at a general license facility:NUREG-1536[S].USNRC,2010.
- [9]Auzoux Q.,et al.Hydride reorientation and its impact on ambient temperature mechanical properties of high-burnup irradiated and unirradiated recrystallized Zircaloy-2nuclear fuel cladding with an inner liner[J].JNM,2017,494.
- [10]Bouffioux P,Ambard A and et al.Hydride reorientation in M5 cladding and its impact on mechanical properties[R].2013.
- [11]NRC.Docket No.71-9235.NAC-STC SAR[R].US NRC,2015.
- [12]Aomi M.Evaluation of Hydride Reorientation Behavior and Mechanical Property for High-burnup Fuel Cladding Tubes in Interim Dry Storage[J].Journal of ASTMinternational,2007,5(9).