Published October 2010 | Version v1
Miscellaneous Open

Components of WWER engineering factors for peaking factors: status and trends

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

Description

One of the topics for discussion at special working group 'Elaboration of the methodology for calculating the core design engineering factors' is the problem of engineering factor components. The list of components corresponds to the phenomena that are taken into account with the engineering factor. It is supposed the better understanding of the influenced phenomena is important stage for developing unified methodology. This paper presents some brief overview of components of the engineering factor for VVER core peaking factors as they are in the Kurchatov Institute methodology. The evolution of some components to less conservative values is observed. Author makes some assumptions as for the further progress in components assessment. The engineering factors providing observance of design limits at normal operation, should cover, with the set probability, the uncertainty, connected with process of core design. For definition of the value of factors it is necessary to define influence of these uncertainties on the investigated parameter of the reactor. Practice consists in defining all possible sources of uncertainties, to estimate influence of each of them, and on their basis to define total influence of all uncertainties. The important stage of a technique of factor calculation is a definition of the list influencing uncertainties. It is obvious that all characteristics of VVER core are known with some uncertainty-owing to manufacturing tolerances, the measurement errors, etc. However essential influence on the parameters connected with safety, render only a part from them. At list formation those characteristics get out only, whose influence is essential to the corresponding parameter. (Author)

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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. 1-9
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)

Optional Information

Lead record
0ayzk-hzj83
Notes
6 figs.; 6 refs.