Published October 2010 | Version v1
Miscellaneous Open

MCU calculation of spacing grid influence on fuel assembly axial power distribution

Creators

  • 1. RRC Kurchatov Institute, Moscow (Russian Federation)

Description

Presence of spacing grid in fuel assembly noticeably decreases local energy release due to small local change of uranium-water ratio. Condition of total energy release conservation leads to some increase in maximum of axial power distribution. With MCU Monte Carlo code these increase/decrease were calculated for some VVER-440 and VVER-1000 F As. Since geometry of spacing grid is very complicated, two different sensibly simplified models were proposed. Both gave close results. Local minimums turn out to be ∼5% lower than average and local maximums increase slightly more than 1%. (Authors)

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Part of:
Proceedings of the twentieth symposium of atomic energy research

Additional details

Publishing Information

Publisher
Kiadja and KFKI Atomenergia Kutatointezet
Imprint Place
Budapest (Hungary)
ISBN
978-963-372-643-3 (OE)
Imprint Title
Proceedings of the twentieth symposium of atomic energy research
Imprint Pagination
790 p.
Journal Page Range
p. 1-5
Report number
INIS-SK--2010-097

Conference

Title
20. Atomic Energy Research Symposium on WWER Physics and Reactor Safety
Dates
20-24 Sep 2010
Place
Hanasaari, Espoo (Finland)

INIS

Country of Publication
Hungary
Country of Input or Organization
Slovakia
INIS RN
41131402
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
COMPUTER CALCULATIONS; DETERMINISTIC ESTIMATION; ENRICHMENT; ERRORS; FUEL ASSEMBLIES; GAMMA RADIATION; GRIDS; LEAD; NEUTRON FLUENCE; NUMERICAL DATA; PHYSICAL PROPERTIES; POWER DISTRIBUTION; POWER GENERATION; SPENT FUELS; WEIGHT; WWER TYPE REACTORS; ZIRCONIUM
Descriptors DEC
CALCULATION METHODS; DATA; ELECTRODES; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY SOURCES; ENRICHED URANIUM REACTORS; FUELS; INFORMATION; IONIZING RADIATIONS; MATERIALS; METALS; NUCLEAR FUELS; POWER REACTORS; PWR TYPE REACTORS; RADIATIONS; REACTOR MATERIALS; REACTORS; THERMAL REACTORS; TRANSITION ELEMENTS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
3 figs.; 3 tabs.; 1 ref.