In vessel detection of delayed neutron emitters from clad failure in sodium cooled nuclear reactors: Information treatment

被引：9

作者：

Filliatre, P. ^{[1
]}

Jammes, C. ^{[1
]}

Jeannot, J. -P. ^{[2
]}

Jadot, F. ^{[3
]}

机构：

[1] CEA, Instrumentat Sensors & Dosimetry Lab, DEN, DER, F-13108 St Paul Les Durance, France

[2] CEA, Instrumentat & Technol Testing Lab, DEN, DTN, F-13108 St Paul Les Durance, France

[3] CEA, ASTRID Project Grp, DEN, DER, F-13108 St Paul Les Durance, France

来源：

ANNALS OF NUCLEAR ENERGY | 2014年 / 65卷

关键词：

Protection systems; Safety; Radiation monitoring; Accidents and dismantling; Instrumentation; Fast and breeder reactors; Fission chambers; Clad failure detection; FISSION CHAMBERS; PULSED-NEUTRON; ROD-DROP; SIGNAL;

D O I：

10.1016/j.anucene.2013.11.046

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：

With appropriate techniques, the information brought by the in-vessel instrumentation of nuclear reactors may betray rather subtle departures from normal state indicating an abnormal situation at early stages, to improve both safety and availability. This paper takes the case of the detection of delayed neutrons released by a clad failure in sodium-cooled fast neutron reactors as an illustrative application of hypothesis testing. Two methods are discussed, seeking either for a counting excess of for a departure from stationarity, yielding similar results. The question of false alarms is addressed by a Bayesian approach that takes into account the prior probability of failure. The use of several identical sensors is shown to be effective. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：385 / 389

页数：5

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