Application of fractional scaling analysis (FSA) to loss of coolant accidents (LOCA)

Zuber, N.; Rohatgi, U.S.; Wulff, W.; Catton, I.

doi:10.1016/j.nucengdes.2007.01.017

Cited by 50 publications

(28 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the scaling analysis, the EMDAP recommends the use of hierarchical, two-tiered scaling (H2TS) approach [17,18]. However, the new FSA approach [13,14,16,19], which evolved from H2TS, offers some advantages and might be applied as well.…”

Section: An Application Of Fractional Scaling Analysis For Integral Ementioning

confidence: 99%

“…To quantify the effect of a changing state variable w by an amount dw, we can use the reference value w 0 and define fractional change (effect metric) as in Ref. [13]…”

Section: Time Decomposition Of Postulated Transient Into Timementioning

confidence: 99%

“…The RELAP/GOTHIC performed analysis and fractional scaling analysis (FSA) methodology [13] were applied iteratively several times (see bold backward arrows in Fig. 3) for different IRIS and SPES3 configurations.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of Fractional Scaling Analysis for Development and Design of Integral Effects Test Facility

Dzodzo

Oriolo

Ambrosini

et al. 2019

Journal of Nuclear Engineering and Radiation Science

View full text Add to dashboard Cite

The aim of this paper is to present a fractional scaling analysis (FSA) application for a system with interacting components where multiple figures of merits need to be respected during complex transient accident scenario with several consecutive time sequences. This paper presents FSA application to the International Reactor Innovative and Secure (IRIS) reactor and Simulatore Pressurizzato per Esperienze di Sicurezza 3 (SPES3) integral effects test (IET) facility. The FSA was applied for the small break loss of coolant accident (SBLOCA) on the direct vessel injection (DVI) line as the most challenging transient scenario. The FSA methodologies were applied for two figures of merits: (1) reactor and containment vessels pressure responses, and (2) reactor vessel water collapsed level response. The space decomposition was performed first. The reactor vessel and containment vessel were divided in components so that important phenomena and their consequences can be evaluated in each of them. After that, the time decomposition in consecutive time sequences was performed for the considered transient (DVI SBLOCA) based on the starts, or ends, of the defining events. The configuration of the system in each time sequence might be different and dependent on the control system actions connecting, or disconnecting, various components of the system due to the valves openings, or closings. This way, the important phenomena and their consequences can be evaluated for each component and time sequence. Also, this paper presents and discusses options for deriving nondimensional groups and calculation of distortions between prototype and model responses for complex transients containing multiple consecutive time sequences. The input data for scaling analysis are based on the results of RELAP/GOTHIC analysis performed for IRIS and RELAP analysis performed for SPES3. The scaling analysis was applied iteratively several times for different IRIS and SPES3 configurations. Based on the intermediate results, some components in the IRIS and SPES3 were redesigned so that the distortions between IRIS and SPES3 responses are decreased.

show abstract

Section: An Application Of Fractional Scaling Analysis For Integral Ementioning

confidence: 99%

“…To quantify the effect of a changing state variable w by an amount dw, we can use the reference value w 0 and define fractional change (effect metric) as in Ref. [13]…”

Section: Time Decomposition Of Postulated Transient Into Timementioning

confidence: 99%

See 1 more Smart Citation

Application of Fractional Scaling Analysis for Development and Design of Integral Effects Test Facility

Dzodzo

Oriolo

Ambrosini

et al. 2019

Journal of Nuclear Engineering and Radiation Science

View full text Add to dashboard Cite

show abstract

“…H2TS refers to a scaling method introduced e.g. in [7], while FSA has been proposed in a series of papers [11][12][13]. The FSA procedure appears as an attempt to get rid of complex computational tools and to create a different framework for the analysis of complex scenarios, even though, according to [12] ".…”

Section: Scaling Controversymentioning

confidence: 99%

Scaling Analysis in Bepu Licensing of LWR

D'Auria¹,

Lanfredini²,

Muellner³

2012

Nuclear Engineering and Technology

View full text Add to dashboard Cite

“…To rank the rainfall and runoff phenomena, the Fractional Scaling Analysis (FSA) method, developed by Dr. Novak Zuber (Zuber, 1999(Zuber, , 2001Zuber et al, 2005), will be used. As the word "scaling" suggests, this method was developed so that scaled experimental facilities of a prototype system could be assessed for any distortions in the key phenomena that govern the system response to a particular event.…”

Section: Phenomena Rankingmentioning

confidence: 99%

A Procedure to Identify and Rank Rainfall/Runoff Phenomena for the Evaluation of Urban Stormwater Models

Dormuth

2007

JWMM

View full text Add to dashboard Cite

Application of fractional scaling analysis (FSA) to loss of coolant accidents (LOCA)

Cited by 50 publications

References 1 publication

Application of Fractional Scaling Analysis for Development and Design of Integral Effects Test Facility

Application of Fractional Scaling Analysis for Development and Design of Integral Effects Test Facility

Scaling Analysis in Bepu Licensing of LWR

A Procedure to Identify and Rank Rainfall/Runoff Phenomena for the Evaluation of Urban Stormwater Models

Contact Info

Product

Resources

About