Benchmarking of fission and activation rate in VVER-1000 mock-up in LR-0 reactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F16%3AN0000068" target="_blank" >RIV/26722445:_____/16:N0000068 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Benchmarking of fission and activation rate in VVER-1000 mock-up in LR-0 reactor

Original language description

The VVER-1000 core and vessel radial mockup was developed for reactor core studies. This device was used for benchmark experiments including neutron transport and fission density measurements in different positions, which can be problematic for diffusion codes used in full core modeling. The comparison of statistic MCNP6.1 code with ENDF/B-VII.O library and code MOBY DICK used by Czech utilities is shown. The fission densities have been determined by means of gamma activity of selected fission products. 92Sr is one of the short-living products with convenient gamma lines however this measurement was supplemented by midterm-living 140La as well. Activation foils containing 197Au were employed for neutron flux measurement in non-fissile regions of the mock-up. It can be concluded, based on provided results, that the diffusion model of the fuel-reflector boundary in MOBY DICK code is within 3 sigma uncertainty interval, but the results are systematically overestimated in case of 92Sr activity. Satisfactory agreement has been determined also for results of 140La, but special treatment is required for absolute evaluation. Thermal fluxes in cooling channels located in the baffle body and measured by means of activation analysis are in good agreement with MCNP6.1 calculations, although some variations in smaller channels were observed.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JF - Nuclear energy

OECD FORD branch

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Project

<a href="/en/project/ED2.1.00%2F03.0108" target="_blank" >ED2.1.00/03.0108: Sustainable Energy</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Physics of Reactors 2016, PHYSOR 2016: Unifying Theory and Experiments in the 21st Century Volume 4, 2016

ISBN

978-1-5108-2573-4

ISSN

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e-ISSN

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Number of pages

13

Pages from-to

2548-2560

Publisher name

American Nuclear Society

Place of publication

Red Hook, NY, USA

Event location

Sun Valley, Idaho, USA

Event date

May 1, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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