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      Estimation of experimental uncertainty for physical measurements based on the start-up data of the latest VVER-1000 units Translated title: Experimentelle Unsicherheiten bei Inbetriebnahme-Messungen von WWER-1000

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          Abstract

          During the last decades several new VVER-1000 units of different projects have been commissioned. At some of them similar initial fuel loadings were implemented. To determine experimentally neutron-physics characteristics of those units almost similar physical start-up test programs were performed and measurement equipment were also similar. The paper presents the analysis of some result of neutron-physics characteristics that were carried out during physics start-up of VVER-1000 units with similar initial fuel loading. The subject of analysis is an estimation of experimental uncertainties. An effort is made to consider individual test result as a single random realization of universal set. It is assumed the analysis of individual results spread helps to estimate general inherent uncertainty of experiment.

          Kurzfassung

          Bei vielen der in den letzten Jahren in Betrieb genommenen WWER-1000 Reaktoren wurden ähnliche Erstbeladungen, Inbetriebnahme-Programme und Messtechniken verwendet. Die Ergebnisse der messtechnischen Aufnahme von neutronenphysikalischen Kennzahlen in der Inbetriebnahme-Phase werden verglichen. Dabei wird das Hauptaugenmerk auf die Unsicherheit der experimentellen Messungen gelegt und einzelne Messungen als zufällige Einzelwerte einer Grundmenge betrachtet. Des Weiteren wird angenommen, dass die Untersuchung der Streubreite der Einzelergebnisse hilft, die allgemeine Genauigkeit der Versuchsreihe abzuschätzen.

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          Review and Discussion of the Results of Physical Start-up Investigation on WWER Typre Reactor Core

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            Measuring asymmetry multiplying properties of the core at the stage of physical start-up of the reactor unit of Tianwan NPP 1

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              Gas-discharge detectors for monitoring nuclear reactors

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                Author and article information

                Journal
                kt
                Kerntechnik
                Carl Hanser Verlag
                0932-3902
                2195-8580
                29 October 2015
                : 80
                : 5
                : 424-430
                Affiliations
                1 National Research Centre “Kurchatov Institute”, 1, Akademika Kurchatova pl., Moscow, 123182, Russian Federation
                Author notes
                Article
                KT110502
                10.3139/124.110502
                93705333-6c21-465f-8674-9142b3b941fd
                © 2015, Carl Hanser Verlag, München
                History
                : 13 February 2015
                Page count
                References: 9, Pages: 7
                Categories
                Technical Contributions/Fachbeiträge

                Materials technology,Materials for energy,Nuclear physics
                Materials technology, Materials for energy, Nuclear physics

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