Object-oriented petri nets for reliability assessment and sensitivity analysis of safety-critical nuclear power plant systems

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-03-17 DOI:10.1016/j.anucene.2025.111364

Kabiratna Behera , Vinay Kumar , Binod Kumar Singh

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Abstract

A Safety-critical system (SCS) is a complex system consisting of various components functioning cooperatively that demands rigorous analysis to ensure reliability and effectiveness in mitigating potential hazards. In several previous studies, the ordinary Petri net (PN) models are used to model and analyze the reliability of SCSs. However, these models lack modularity and flexibility and have state explosion problems. On the other hand, the application of Object-Oriented Petri Nets (OOPNs) in the field of dependability analysis of SCSs is limited. Thus, we propose a framework using OOPNs to model the complex SCSs and perform reliability and sensitivity analysis of such systems. Unlike ordinary PN models, the OOPN models offer better modularity and flexibility and also reduce the state explosion problems. We apply our framework to the Reactor Core Isolation Cooling (RCIC) system in Nuclear Power Plants (NPPs) to demonstrate its effectiveness. We have validated our framework and achieved an accuracy of 99.97% in reliability prediction, which proves its efficacy.

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.