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Design of BWR instability suppression system
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.ORCID iD: 0000-0003-0811-2325
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.
2008 (English)In: International Conference on the Physics of Reactors 2008, PHYSOR 08, 2008, 2062-2068 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper explores the concept of instability suppression system and its performance in a BWR plant. The key idea adopted from the work of Aleksakov et al. (1980) is to utilize information provided by the in-core power monitoring detectors to guide movement of control rods in a way that suppress the global, regional and local instability. In the paper, effectiveness of a simplified suppression algorithm is characterized by implementing it on a real BWR model, using the RELAP5/PARCS coupled thermal-hydraulics and neutron kinetics code. Both forced power oscillations and realistic reactor transients (feedwater temperature transients, control rod drop) were analyzed. The results suggest that, without requiring any modifications for the in-reactor diagnostics and equipment, the proposed suppression system is capable of significantly mitigating the impact of core instability events on plant performance by maintaining the core parameters within the safe operational range.

Place, publisher, year, edition, pages
2008. 2062-2068 p.
Keyword [en]
BWR, Stability, instability, Suppression System, detect and suppresion
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-92644Scopus ID: 2-s2.0-79953854518ISBN: 978-161782121-9 (print)OAI: oai:DiVA.org:kth-92644DiVA: diva2:514168
Conference
International Conference on the Physics of Reactors 2008, PHYSOR 08; Interlaken; 14 September 2008 through 19 September 2008
Note
QC 20120816Available from: 2012-04-05 Created: 2012-04-05 Last updated: 2012-08-16Bibliographically approved

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Roshan, Sean

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