CUED Publications database

The effect of beam interruptions on the integrity of ADSR fuel pin cladding: A thermo-mechanical analysis

Ahmad, A and Sheehy, SL and Parks, GT (2012) The effect of beam interruptions on the integrity of ADSR fuel pin cladding: A thermo-mechanical analysis. Annals of Nuclear Energy, 46. pp. 97-105. ISSN 0306-4549

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Abstract

During its lifetime in the core, the cladding of an Accelerator Driven Subcritical Reactor (ADSR) fuel pin is expected to experience variable stresses due to frequent interruptions in the accelerator proton beam. This paper investigates the thermal fatigue damage in the cladding due to repetitive and unplanned beam interruptions under certain operational conditions. Beam trip data was obtained for four operating high power proton accelerators, among which the Spallation Neutron Source (SNS) superconducting accelerator was selected for further analysis. 9Cr-1Mo-Nb-V (T91) steel was selected as the cladding material because of its proven compatibility with proposed ADSR design concepts. The neutronic, thermal and stress analyses were performed using the PTS-ADS, a code that has been specifically developed for studying the dynamic response to beam-induced transients in accelerator driven subcritical systems. The lifetime of the fuel cladding in the core was estimated for three levels of allowed pin power and specific operating conditions. © 2012 Elsevier Ltd. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Accelerator Driven Subcritical Reactor Accelerator reliability Cladding thermal fatigue damage
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:45
Last Modified: 08 Dec 2014 02:22
DOI: 10.1016/j.anucene.2012.03.021