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Optimization of RIA-calculations: Simulating Falling Control Rods at Forsmark Nuclear Power Plant
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2013 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This report accounts for investigations of ways to reduce the calculation times forsimulations of falling control rods in boiling water reactors done prior to everyreactor startup, known as RIA-calculations. Two methodologies to lower thecalculation times have been proposed, developed and implemented in a set ofmatlab-scripts, which are fully compatible with the previously used methodology.The new methodologies have been applied on 17 authentic power cycles at the threeForsmark reactors, whereby a reduction in calculation times by 70 to 90 % could bedemonstrated while still confidently maintaining the analysis performance. Thesimulations made and the basis of the new methodologies are described in detail inthis report, and possible steps to further lower the calculation times are alsoproposed.

Place, publisher, year, edition, pages
2013. , 37 p.
Series
UPTEC F, ISSN 1401-5757 ; 13007
Keyword [en]
nuclear physics, safety analysis, control rod
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-200919OAI: oai:DiVA.org:uu-200919DiVA: diva2:625387
Educational program
Master Programme in Engineering Physics
Uppsok
Technology
Supervisors
Examiners
Available from: 2013-09-02 Created: 2013-06-04 Last updated: 2013-09-02Bibliographically approved

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