Published October 2007 | Version v1
Journal article Metadata-only

The influence of uncertainties in microscopic cross sections of 238U and Pu isotopes on multiplication factor of WWER

Creators

  • 1. GNTs RF ITEhF, Moscow (Russian Federation)

Description

The influence of the uncertainties in the microscopic cross sections of 238U and 239-241Pu on the neutron multiplication coefficient in WWER-1000 is studied. Data on the uncertainty of the cross sections were obtained by analyzing the ENDF/B files of the JENDL 3.3 system using the ERRORJ program. The characteristics of the reactor are calculated using the TRIFON 2.1 and SHERHAN programs. An approach associated with the calculation of the coefficients of sensitivity of the fuel assemblies and the reactor to standard samples in a small-group approximation is used. The uncertainty of the neutron multiplication coefficient amounts near 0.5%

Abstract (Russian)

Изучено влияние неопределенностей микроскопических сечений 238U и 239-241Pu на коэффициент размножения нейтронов в ВВЭР-1000. Данные о неопределенности сечений получены обработкой файлов ENDF/B системы JENDL 3.3 по программе ERRORJ. Характеристики реактора рассчитывали по программам TRIFON 2.1 и SHERHAN. Использован подход, связанный с вычислением коэффициентов чувствительности ТВС и реактора к стандартным образцам в малогрупповом приближении. Неопределенность коэффициента размножения нейтронов составила около 0.5%

Additional details

Additional titles

Original title (Russian)
Влияние неопределенности микросечений

Publishing Information

Journal Title
Atomnaya Ehnergiya
Journal Volume
103
Journal Issue
4
Journal Page Range
p. 247-254
ISSN
0004-7163
CODEN
AENGAB

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
39092776
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
COMPUTER CALCULATIONS; DATA COVARIANCES; E CODES; FUEL ASSEMBLIES; MULTIPLICATION FACTORS; NEUTRONS; NOVOVORONEZH-5 REACTOR; PLUTONIUM ISOTOPES; S CODES; SENSITIVITY ANALYSIS; T CODES; URANIUM 238
Descriptors DEC
ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYONS; COMPUTER CODES; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; ENRICHED URANIUM REACTORS; EVEN-EVEN NUCLEI; FERMIONS; HADRONS; HEAVY NUCLEI; ISOTOPES; NUCLEI; NUCLEONS; POWER REACTORS; PWR TYPE REACTORS; RADIOISOTOPES; REACTORS; SPONTANEOUS FISSION RADIOISOTOPES; THERMAL REACTORS; URANIUM ISOTOPES; WATER COOLED REACTORS; WATER MODERATED REACTORS; WWER TYPE REACTORS; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
6 refs., 5 figs., 10 tabs.