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Qualification of the WIMS lattice code, for the design, operation and accident analysis of nuclear reactors; Calificacion del programa WIMS de calculo neutronico para diseno, seguimiento de operacion y analisis de accidentes de reactores nucleares

Abstract

A basic problem in nuclear reactor physics in that of the description of the neutron population behaviour in the multiplicative medium of a nuclear fuel. Due to the magnitude of the physical problem involved and the present degree of technological evolution regarding computing resources, of increasing complexity and possibilities, the calculation programs or codes have turned to be a basic auxiliary tool in reactor physics. In order to analyze the global problem, several aspects should be taken into consideration. The first aspect to be considered is that of the availability of the necessary nuclear data. The second one is the existence of a variety of methods and models to perform the calculations. The final phase for this kind of analysis is the qualification of the computing programs to be used, i.e. the verification of the validity domain of its nuclear data and the models involved. The last one is an essential phase, and in order to carry it on great variety of calculations are required, that will check the different aspects contained in the code. We here analyze the most important physical processes that take place in a nuclear reactor cell, and we consider the qualification of the lattice code  More>>
Authors:
Lerner, A M [1] 
  1. Ente Nacional Regulador Nuclear, Buenos Aires (Argentina)
Publication Date:
Dec 31, 1996
Product Type:
Thesis/Dissertation
Report Number:
INIS-AR-129
Reference Number:
SCA: 220100; PA: AIX-29:050508; EDB-98:093138; SN: 98002007484
Resource Relation:
Other Information: TH: Tesis (Dr. en Fisica); PBD: 1996
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; COMPUTER CODES; NEUTRON TRANSPORT; REACTOR CELLS; REACTORS; W CODES
OSTI ID:
643830
Research Organizations:
La Plata Univ. Nacional (Argentina). Facultad de Ciencias Exactas
Country of Origin:
Argentina
Language:
Spanish
Other Identifying Numbers:
Other: ON: DE98636132; TRN: AR9800012050508
Availability:
INIS; OSTI as DE98636132
Submitting Site:
INIS
Size:
131 p.
Announcement Date:

Citation Formats

Lerner, A M. Qualification of the WIMS lattice code, for the design, operation and accident analysis of nuclear reactors; Calificacion del programa WIMS de calculo neutronico para diseno, seguimiento de operacion y analisis de accidentes de reactores nucleares. Argentina: N. p., 1996. Web.
Lerner, A M. Qualification of the WIMS lattice code, for the design, operation and accident analysis of nuclear reactors; Calificacion del programa WIMS de calculo neutronico para diseno, seguimiento de operacion y analisis de accidentes de reactores nucleares. Argentina.
Lerner, A M. 1996. "Qualification of the WIMS lattice code, for the design, operation and accident analysis of nuclear reactors; Calificacion del programa WIMS de calculo neutronico para diseno, seguimiento de operacion y analisis de accidentes de reactores nucleares." Argentina.
@misc{etde_643830,
title = {Qualification of the WIMS lattice code, for the design, operation and accident analysis of nuclear reactors; Calificacion del programa WIMS de calculo neutronico para diseno, seguimiento de operacion y analisis de accidentes de reactores nucleares}
author = {Lerner, A M}
abstractNote = {A basic problem in nuclear reactor physics in that of the description of the neutron population behaviour in the multiplicative medium of a nuclear fuel. Due to the magnitude of the physical problem involved and the present degree of technological evolution regarding computing resources, of increasing complexity and possibilities, the calculation programs or codes have turned to be a basic auxiliary tool in reactor physics. In order to analyze the global problem, several aspects should be taken into consideration. The first aspect to be considered is that of the availability of the necessary nuclear data. The second one is the existence of a variety of methods and models to perform the calculations. The final phase for this kind of analysis is the qualification of the computing programs to be used, i.e. the verification of the validity domain of its nuclear data and the models involved. The last one is an essential phase, and in order to carry it on great variety of calculations are required, that will check the different aspects contained in the code. We here analyze the most important physical processes that take place in a nuclear reactor cell, and we consider the qualification of the lattice code WIMS, that calculates the neutronic parameters associated with such processes. Particular emphasis has been put in the application to natural uranium fuelled reactor, heavy water cooled and moderated, as the Argentinean power reactors now in operation. A wide set of experiments has been chosen: a.-Fresh fuel in zero-power experimental facilities and power reactors; b.-Irradiated fuel in both types of facilities; c.-Benchmark (prototype) experiments with loss of coolant. From the whole analysis it was concluded that for the research reactors, as well as for the heavy water moderated power reactors presently operating in our country, or those that could operate in a near future, the lattice code WIMS is reliable and produces results within the experimental values and their errors, and as good as those produced by the most reliable calculation tools available at present. (author). refs., figs., tabs.}
place = {Argentina}
year = {1996}
month = {Dec}
}