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Title: Reflooding of tight lattice bundles

Abstract

Results regarding analytical bottom reflooding experiments in a 37- and a 127-heater rod bundle are presented for two different tight lattices. A comparison between these two geometries and with the standard pressurized water reactor (PWR) array shows a degradation of cooling efficiency when the cross section of the subchannels is decreased. The core heat sinks (guide thimbles and water tubes'') are seen to have a noticeable influence on the overall cooling of the bundle, and it is confirmed that a combined top/bottom injection does not significantly improve cooling efficiency. Calculations with CATHARE 1.3 code adjusted for the standard PWR array are presented (zero heat sinks), but results have to be confirmed over a wider range of parameters.

Authors:
; ;  [1]
  1. (Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires de Grenoble)
Publication Date:
OSTI Identifier:
7054772
Alternate Identifier(s):
OSTI ID: 7054772
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Technology; (United States); Journal Volume: 107:1
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; FUEL ELEMENT CLUSTERS; COOLING; PWR TYPE REACTORS; C CODES; DATA ANALYSIS; DESIGN; FLUID INJECTION; LOSS OF COOLANT; REACTOR LATTICES; REACTOR SAFETY; SHROUDS; THEORETICAL DATA; ACCIDENTS; COMPUTER CODES; COOLING SYSTEMS; DATA; ENERGY SYSTEMS; ENRICHED URANIUM REACTORS; FUEL ASSEMBLIES; INFORMATION; NUMERICAL DATA; POWER REACTORS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; SAFETY; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS 220900* -- Nuclear Reactor Technology-- Reactor Safety; 210200 -- Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled

Citation Formats

Veteau, J.M., Digonnet, A., and Deruaz, R. Reflooding of tight lattice bundles. United States: N. p., 1994. Web.
Veteau, J.M., Digonnet, A., & Deruaz, R. Reflooding of tight lattice bundles. United States.
Veteau, J.M., Digonnet, A., and Deruaz, R. Fri . "Reflooding of tight lattice bundles". United States. doi:.
@article{osti_7054772,
title = {Reflooding of tight lattice bundles},
author = {Veteau, J.M. and Digonnet, A. and Deruaz, R.},
abstractNote = {Results regarding analytical bottom reflooding experiments in a 37- and a 127-heater rod bundle are presented for two different tight lattices. A comparison between these two geometries and with the standard pressurized water reactor (PWR) array shows a degradation of cooling efficiency when the cross section of the subchannels is decreased. The core heat sinks (guide thimbles and water tubes'') are seen to have a noticeable influence on the overall cooling of the bundle, and it is confirmed that a combined top/bottom injection does not significantly improve cooling efficiency. Calculations with CATHARE 1.3 code adjusted for the standard PWR array are presented (zero heat sinks), but results have to be confirmed over a wider range of parameters.},
doi = {},
journal = {Nuclear Technology; (United States)},
number = ,
volume = 107:1,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 1994},
month = {Fri Jul 01 00:00:00 EDT 1994}
}