RADIATION-INDUCED EMBRITTLEMENT IN LIGHT WATER-REACTOR PRESSURE-VESSELS

被引：2
|
作者：
GOLD, R
MCELROY, WN
机构：
[1] Westinghouse Hanford Co, Richland,, WA, USA, Westinghouse Hanford Co, Richland, WA, USA
来源：
NUCLEAR ENGINEERING AND DESIGN | 1987年 / 104卷 / 02期
关键词：
DOSIMETRY - METALS AND ALLOYS - Embrittlement - NEUTRONS - NUCLEAR REACTORS; LIGHT WATER - Pressure Vessels;
D O I：
10.1016/0029-5493(87)90296-2
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
In operating light water reactor (LWR) commercial power plants, neutron radiation induces embrittlement of the pressure vessel (PV) and its support structures. As a consequence, LWR-PV integrity is a primary safety consideration. Recent LWR-PV benchmark experiments are analyzed in this paper. On this basis, it is established that an exponential representation accurately describes the spatial dependence of neutron exposure in LWR-PV. Implications produced by this simple exponential behavior are explained and trend-curve models for the prediction of PV embrittlement are derived. These derivations provide for a clearer understanding and assessment of the assumptions underlying these trend-curve models. It is demonstrated that LWR-PV embrittlement possesses significant material dependence.
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页码：155 / 174
页数：20
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