A Monte Carlo-based exploration framework for identifying components vulnerable to cyber threats in nuclear power plants

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

43 Scopus Citations
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Author(s)

  • Wei Wang
  • Antonio Cammi
  • Francesco Di Maio
  • Stefano Lorenzi
  • Enrico Zio

Detail(s)

Original languageEnglish
Pages (from-to)24-37
Journal / PublicationReliability Engineering and System Safety
Volume175
Online published7 Mar 2018
Publication statusPublished - Jul 2018
Externally publishedYes

Abstract

With the extensive use of digital Instrumentation and Control (I&C) systems, Nuclear Power Plants (NPPs) are becoming Cyber-Physical Systems (CPSs). Their integrity can, then, be compromised also by security breaches (such as cyber attacks). Multiple failure modes (such as bias, drift and freezing) can occur, both due to random failures or induced by malicious external attacks. In this paper, we illustrate an exploration approach that, based on safety margins estimation, allows identifying the most vulnerable components to malicious external attacks. For demonstration, we apply the approach to the Advanced Lead-cooled Fast Reactor European Demonstrator (ALFRED). Its object-oriented model is embedded within a Monte Carlo (MC)-driven engine that injects different types of cyber attacks at random times and magnitudes. Safety margins are, then, calculated and used for identifying the most vulnerable CPS components. This allows selecting protections to make ALFRED resilient towards maliciously induced failures.

Research Area(s)

  • Advanced Lead-cooled Fast Reactor European Demonstrator (ALFRED), Cyber threats, Cyber-Physical System, Nuclear Power Plant, Safety margins

Citation Format(s)