Journal ArticleDOI
Reliability evaluation of a natural circulation system
TLDR
In this paper, a reliability study performed with reference to a passive thermohydraulic natural circulation (NC) system, named TTL-1, was performed with the main purpose to optimize the system design.About:
This article is published in Nuclear Engineering and Design.The article was published on 2003-09-01. It has received 88 citations till now.read more
Citations
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Journal ArticleDOI
Methodology for the reliability evaluation of a passive system and its integration into a Probabilistic Safety Assessment
M. Marques,J.F. Pignatel,P. Saignes,Francesco Saverio D'Auria,Luciano Burgazzi,C. Muller,R. Bolado-Lavin,C. Kirchsteiger,V. La Lumia,Ivan B. Ivanov +9 more
TL;DR: In this paper, a methodology has been developed to evaluate the reliability of passive systems characterised by a moving fluid and whose operation is based on thermal-hydraulic (T-H) principles.
Journal ArticleDOI
The Impact of Uncertainties on the Performance of Passive Systems
TL;DR: Passive safety systems are commonly considered to be more reliable than active systems as mentioned in this paper, and the lack of mechanical moving parts or other active components drastically reduces the probabilities of hardw...
Journal ArticleDOI
Estimation of the Functional Failure Probability of a Thermal Hydraulic Passive System by Subset Simulation
Enrico Zio,Nicola Pedroni +1 more
TL;DR: The recently developed Subset Simulation (SS) method is considered for improving the efficiency of the random sampling of the probability of functional failure of an emergency passive decay heat removal system in a simple steady-state model of a Gas-cooled Fast Reactor (GFR).
Journal ArticleDOI
Scaling in nuclear reactor system thermal-hydraulics
TL;DR: In this paper, a critical survey of scaling state-of-the-art in the area of thermal-hydraulics (NRSTH) is presented, and a roadmap for scaling is proposed.
Journal ArticleDOI
Evaluation of uncertainties related to passive systems performance
TL;DR: In this article, a methodological and structured procedure to address the uncertainties related to passive safety functions is presented, where two hazard identification used qualitative methods, as failure mode and effect analysis (FMEA) and hazard and operability study (HAZOP), are utilized and the relative results compared in order to assess the main sources of physical failure.
References
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Journal ArticleDOI
Statistical Prediction with Special Reference to the Problem of Tolerance Limits
Journal ArticleDOI
Code validation and uncertainties in system thermalhydraulics
TL;DR: The state of the art in the area of thermalhydraulic system codes assessment and uncertainty evaluation is described and a proposed uncertainty methodologies to achieve this goal are proposed.
Proceedings ArticleDOI
The REPAS Study: Reliability Evaluation of Passive Safety Systems
TL;DR: In this article, the reliability analysis is performed on a two-phase, natural circulation system, where a heat source and a heat sink where the condensation occurs are simulated via best-estimate code (Relap5 mod3.2).
Reliability assessment of passive safety systems
TL;DR: Innovative reactor concepts make use of passive safety features to a large extent in combination with active safety or operational systems as discussed by the authors, which is why it is expected that pa ssive systems combine among others.