Analyses of Instability Events in the Peach Bottom-2 BWR Using Thermal-Hydraulic and 3D Neutron Kinetic Coupled Codes Technique
Joint Authors
Lombardi Costa, Antonella
Ambrosini, Walter
Petruzzi, Alessandro
D'Auria, Francesco
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-01-03
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Boiling water reactor (BWR) instabilities may occur when, starting from a stable operating condition, changes in system parameters bring the reactor towards an unstable region.
In order to design more stable and safer core configurations, experimental and theoretical studies about BWR stability have been performed to characterise the phenomenon and to predict the conditions for its occurrence.
In this work, contributions to the study of BWR instability phenomena are presented.
The RELAP5/MOD3.3 thermal-hydraulic (TH) system code and the PARCS-2.4 3D neutron kinetic (NK) code were coupled to simulate BWR transients.
Different algorithms were used to calculate the decay ratio (DR) and the natural frequency (NF) from the power oscillation predicted by the transient calculations as two typical parameters used to provide a quantitative description of instabilities.
The validation of the code model set up for the Peach Bottom Unit 2 BWR plant is performed against low-flow stability tests (LFSTs).
The four series of LFST have been performed during the first quarter of 1977 at the end of cycle 2 in Pennsylvania.
The tests were intended to measure the reactor core stability margins at the limiting conditions used in design and safety analyses.
American Psychological Association (APA)
Lombardi Costa, Antonella& Petruzzi, Alessandro& D'Auria, Francesco& Ambrosini, Walter. 2008. Analyses of Instability Events in the Peach Bottom-2 BWR Using Thermal-Hydraulic and 3D Neutron Kinetic Coupled Codes Technique. Science and Technology of Nuclear Installations،Vol. 2008, no. 2008, pp.1-16.
https://search.emarefa.net/detail/BIM-470988
Modern Language Association (MLA)
Lombardi Costa, Antonella…[et al.]. Analyses of Instability Events in the Peach Bottom-2 BWR Using Thermal-Hydraulic and 3D Neutron Kinetic Coupled Codes Technique. Science and Technology of Nuclear Installations No. 2008 (2008), pp.1-16.
https://search.emarefa.net/detail/BIM-470988
American Medical Association (AMA)
Lombardi Costa, Antonella& Petruzzi, Alessandro& D'Auria, Francesco& Ambrosini, Walter. Analyses of Instability Events in the Peach Bottom-2 BWR Using Thermal-Hydraulic and 3D Neutron Kinetic Coupled Codes Technique. Science and Technology of Nuclear Installations. 2008. Vol. 2008, no. 2008, pp.1-16.
https://search.emarefa.net/detail/BIM-470988
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-470988