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Design of fuelling machine bridge and carriage to meet seismic qualification requirements

Abstract

During each refuelling operation, the boundary of Primary heat transport system is extended up to Fuelling Machines. A breach in the pressure boundary of Fuelling Machine in this condition would cause a loss of coolant accident. Fuelling Machines are also used for transit storage of spent fuel bundles till discharged to fuel transfer system. Therefore, a fuelling machine, including its support structures, is required to be seismically qualified for both on-reactor ( coupled ) mode and off-reactor (uncoupled) mode. The fuelling machine carriage used in the first generation of Indian PHWRs is a mobile equipment on wheels moving over fixed rails. As this configuration was found unsuitable for withstanding strong seismic disturbances, a bridge type design with fixed columns was evolved for the next generation of reactors. Initially, the seismic analysis of the fuelling machine bridge and carriage was done using static structural analysis and values of natural frequencies for various structures were computed. The structures were suitably modified based on the results of this analysis. Subsequently, a detailed dynamic seismic analysis using finite element model has been completed for both coupled and uncoupled conditions. The qualification of the structure has been carried out as per ASME section 111 Division  More>>
Authors:
Ghare, A B; Chhatre, A G; Vyas, A K; Bhambra, H S [1] 
  1. Nuclear Power Corporation of India Ltd., Mumbai (India)
Publication Date:
Dec 31, 1996
Product Type:
Conference
Report Number:
INIS-CA-0052; CONF-9605298-
Reference Number:
SCA: 210400; PA: AIX-28:076138; EDB-97:143804; SN: 97001880544
Resource Relation:
Conference: 1. international conference on CANDU fuel handling systems, Toronto (Canada), 13-14 May 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 1. international conference on CANDU fuel handling systems; PB: 231 p.
Subject:
21 NUCLEAR POWER REACTORS AND ASSOCIATED PLANTS; PHWR TYPE REACTORS; REACTOR CHARGING MACHINES; EARTHQUAKES; CERTIFICATION; DYNAMIC LOADS; REACTOR SAFETY; SAFETY ENGINEERING; SPECIFICATIONS
OSTI ID:
545965
Research Organizations:
Canadian Nuclear Society, Toronto, ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ON: DE98605472; ISBN 0-919784-43-7; TRN: CA9700734076138
Availability:
INIS; OSTI as DE98605472
Submitting Site:
INIS
Size:
pp. 145-153
Announcement Date:

Citation Formats

Ghare, A B, Chhatre, A G, Vyas, A K, and Bhambra, H S. Design of fuelling machine bridge and carriage to meet seismic qualification requirements. Canada: N. p., 1996. Web.
Ghare, A B, Chhatre, A G, Vyas, A K, & Bhambra, H S. Design of fuelling machine bridge and carriage to meet seismic qualification requirements. Canada.
Ghare, A B, Chhatre, A G, Vyas, A K, and Bhambra, H S. 1996. "Design of fuelling machine bridge and carriage to meet seismic qualification requirements." Canada.
@misc{etde_545965,
title = {Design of fuelling machine bridge and carriage to meet seismic qualification requirements}
author = {Ghare, A B, Chhatre, A G, Vyas, A K, and Bhambra, H S}
abstractNote = {During each refuelling operation, the boundary of Primary heat transport system is extended up to Fuelling Machines. A breach in the pressure boundary of Fuelling Machine in this condition would cause a loss of coolant accident. Fuelling Machines are also used for transit storage of spent fuel bundles till discharged to fuel transfer system. Therefore, a fuelling machine, including its support structures, is required to be seismically qualified for both on-reactor ( coupled ) mode and off-reactor (uncoupled) mode. The fuelling machine carriage used in the first generation of Indian PHWRs is a mobile equipment on wheels moving over fixed rails. As this configuration was found unsuitable for withstanding strong seismic disturbances, a bridge type design with fixed columns was evolved for the next generation of reactors. Initially, the seismic analysis of the fuelling machine bridge and carriage was done using static structural analysis and values of natural frequencies for various structures were computed. The structures were suitably modified based on the results of this analysis. Subsequently, a detailed dynamic seismic analysis using finite element model has been completed for both coupled and uncoupled conditions. The qualification of the structure has been carried out as per ASME section 111 Division 1, sub section NF. Details of the significant design features, static and dynamic analysis, results and conclusions are given in the presentation. (author). 4 refs., 4 tabs., 7 figs.}
place = {Canada}
year = {1996}
month = {Dec}
}