Abstract
Unstable behavior of Boiling Water Reactors (BWRs) is known to occur during operation at certain power and flow conditions. This paper reports the results of a preliminary investigation of the impact of uncertainty neutronic parameters on the prediction of the stability of the BWR within the framework of OECD Ringhals-1 stability benchmark. The time domain code TRACE/PARCS was used in the analysis and sensitivity calculations were performed for every neutronic parameter which was anticipated to affect the stability prediction of the reactor. The overall objective of the work here was to identify parameters most significantly affecting the stability phenomena in the Ringhals-1 stability benchmark. Using selected parameters, an uncertainty method based on the propagation of code input errors was used to obtain tolerance limits for the decay ratio and the frequency prediction. The scope of the uncertainty study reported in this paper was limited to the neutronic effects. Further studies will include other effects to include thermal-hydraulic parameters and modeling effects.
| Original language | English (US) |
|---|---|
| Title of host publication | International Conference on the Physics of Reactors 2010, PHYSOR 2010 |
| Pages | 3320-3331 |
| Number of pages | 12 |
| State | Published - Dec 1 2010 |
| Externally published | Yes |
| Event | International Conference on the Physics of Reactors 2010, PHYSOR 2010 - Pittsburgh, PA, United States Duration: May 9 2010 → May 14 2010 |
Publication series
| Name | International Conference on the Physics of Reactors 2010, PHYSOR 2010 |
|---|---|
| Volume | 4 |
Other
| Other | International Conference on the Physics of Reactors 2010, PHYSOR 2010 |
|---|---|
| Country | United States |
| City | Pittsburgh, PA |
| Period | 5/9/10 → 5/14/10 |
Fingerprint
Keywords
- BWR stability
- Sensitivity
- Uncertainty
ASJC Scopus subject areas
- Nuclear Energy and Engineering
- Nuclear and High Energy Physics
Cite this
Sensitivity and uncertainty of the neutronic parameters of BWR ringhals-1 TRACE/PARCS stability prediction. / Gajev, Ivan; Kozlowski, Tomasz; Xu, Yunlin; Downar, Thomas.
International Conference on the Physics of Reactors 2010, PHYSOR 2010. 2010. p. 3320-3331 (International Conference on the Physics of Reactors 2010, PHYSOR 2010; Vol. 4).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Sensitivity and uncertainty of the neutronic parameters of BWR ringhals-1 TRACE/PARCS stability prediction
AU - Gajev, Ivan
AU - Kozlowski, Tomasz
AU - Xu, Yunlin
AU - Downar, Thomas
PY - 2010/12/1
Y1 - 2010/12/1
N2 - Unstable behavior of Boiling Water Reactors (BWRs) is known to occur during operation at certain power and flow conditions. This paper reports the results of a preliminary investigation of the impact of uncertainty neutronic parameters on the prediction of the stability of the BWR within the framework of OECD Ringhals-1 stability benchmark. The time domain code TRACE/PARCS was used in the analysis and sensitivity calculations were performed for every neutronic parameter which was anticipated to affect the stability prediction of the reactor. The overall objective of the work here was to identify parameters most significantly affecting the stability phenomena in the Ringhals-1 stability benchmark. Using selected parameters, an uncertainty method based on the propagation of code input errors was used to obtain tolerance limits for the decay ratio and the frequency prediction. The scope of the uncertainty study reported in this paper was limited to the neutronic effects. Further studies will include other effects to include thermal-hydraulic parameters and modeling effects.
AB - Unstable behavior of Boiling Water Reactors (BWRs) is known to occur during operation at certain power and flow conditions. This paper reports the results of a preliminary investigation of the impact of uncertainty neutronic parameters on the prediction of the stability of the BWR within the framework of OECD Ringhals-1 stability benchmark. The time domain code TRACE/PARCS was used in the analysis and sensitivity calculations were performed for every neutronic parameter which was anticipated to affect the stability prediction of the reactor. The overall objective of the work here was to identify parameters most significantly affecting the stability phenomena in the Ringhals-1 stability benchmark. Using selected parameters, an uncertainty method based on the propagation of code input errors was used to obtain tolerance limits for the decay ratio and the frequency prediction. The scope of the uncertainty study reported in this paper was limited to the neutronic effects. Further studies will include other effects to include thermal-hydraulic parameters and modeling effects.
KW - BWR stability
KW - Sensitivity
KW - Uncertainty
UR - http://www.scopus.com/inward/record.url?scp=79952431620&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952431620&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79952431620
SN - 9781617820014
T3 - International Conference on the Physics of Reactors 2010, PHYSOR 2010
SP - 3320
EP - 3331
BT - International Conference on the Physics of Reactors 2010, PHYSOR 2010
ER -