Development and Assessment of the Appendix K Version of RELAP5-3D for LOCA Licensing Analysis

Liang, Thomas K. S.; Chang, Chin-Jang; Hung, Huan-Jen

doi:10.13182/nt02-a3316

Cited by 11 publications

(2 citation statements)

References 2 publications

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“…To generate a load spectrum for the LBLOCA while considering both aleatory and epistemic uncertainties, a two-step approach was adopted as elaborated in section 2. The first step is to generate a preliminary load spectrum by using RELAP5-3D/K (Liang, K.S., et al, 2002a) (Liang, K.S., et al, 2002b) to calculate the nominal conditional PCT (CPCT  ) for each sequence, and the second step is to account for the epistemic or calculation uncertainty of the preliminary load spectrum by using the DRHM methodology (Liang, K.S., 2011). In the DRHM methodology, conservative Appendix K models were adopted to cover model uncertainty, whereas realistic plant status parameters were used with statistical uncertainty analysis.…”

Section: Probabilistic Load Spectrum Of Lblocamentioning

confidence: 99%

Risk-informed analysis of the large break loss of coolant accident and PCT margin evaluation with the RISMC methodology

Liang

Cheng

et al. 2016

Nuclear Engineering and Design

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For general design basis accidents, such as SBLOCA and LBLOCA, the traditional deterministic safety analysis methodologies are always applied to analyze events based on a so called surrogate or licensing sequence, without considering how low this sequence occurrence probability is. In the to-be-issued 10 CFR 50.46a, the LBLOCA will be categorized as accidents beyond design basis and the PCT margin shall be evaluated in a risk-informed manner. According to the risk-informed safety margin characterization (RISMC) methodology, a process has been suggested to deterministic methodology, the occurrence probability is only about 5.46*10-5 .

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Section: Probabilistic Load Spectrum Of Lblocamentioning

confidence: 99%

Risk-informed analysis of the large break loss of coolant accident and PCT margin evaluation with the RISMC methodology

Liang

Cheng

et al. 2016

Nuclear Engineering and Design

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“…There are several important distinctions between the analyses of bounding events for the FHR based on current analysis, performance-based regulation goals and the historic conservative licensing of LWRs such as LOCA analysis under 10 CFR 50 Appendix K [71]. First, the analysis of FHR BDBEs should be based on best estimate plus uncertainty methods for the analysis of reactor transients [72], [73].…”

Section: Bounding Events Approach For Bdbesmentioning

confidence: 99%

Design and licensing strategies for the fluoride-salt-cooled, high-temperature reactor (FHR) technology

Scarlat

Laufer

Blandford

et al. 2014

Progress in Nuclear Energy

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Fluoride-salt-cooled, high-temperature reactor (FHR) technology combines the robust coated-particle fuel of high-temperature, gas-cooled reactors with the single phase, high volumetric heat capacity coolant of molten salt reactors and the low-pressure pool-type reactor configuration of sodium fast reactors. FHRs have the capacity to deliver heat at high average temperature, and thus to achieve higher thermal efficiency than light water reactors. Licensing of the passive safety systems used in FHRs can use the same framework applied successfully to passive advanced light water reactors, and earlier work by the NGNP and PBMR projects provide an appropriate framework to guide the design of safety-relevant FHR systems. This paper provides a historical review of the development of FHR technology, describes ongoing development efforts, and presents design and licensing strategies for FHRs. A companion review article describes the phenomenology, methods and experimental program in support of FHR.

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Evolution of licensing methodology for large break loss of coolant accident analysis and associated PCT margin quantification

Chou

Liang

et al. 2017

Annals of Nuclear Energy

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Development and Assessment of the Appendix K Version of RELAP5-3D for LOCA Licensing Analysis

Cited by 11 publications

References 2 publications

Risk-informed analysis of the large break loss of coolant accident and PCT margin evaluation with the RISMC methodology

Risk-informed analysis of the large break loss of coolant accident and PCT margin evaluation with the RISMC methodology

Design and licensing strategies for the fluoride-salt-cooled, high-temperature reactor (FHR) technology

Evolution of licensing methodology for large break loss of coolant accident analysis and associated PCT margin quantification

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