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Methodology to Evaluate Nuclear Power Plant Vulnerability to Events in the Transmission Grid

[+] Author Affiliations
Alberto Del Rosso

Electric Power Research (EPRI), Knoxville, TN

Jean-François Roy

Electric Power Research (EPRI), Palo Alto, CA

Frank Rahn

Whitney Research Services (WRS), Palo Alto, CA

Alejandro Capara

Mercados Energéticos Consultores, Buenos Aires, Argentina

Paper No. ICONE22-30846, pp. V003T06A037; 10 pages
  • 2014 22nd International Conference on Nuclear Engineering
  • Volume 3: Next Generation Reactors and Advanced Reactors; Nuclear Safety and Security
  • Prague, Czech Republic, July 7–11, 2014
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-4593-6
  • Copyright © 2014 by ASME


This paper presents a general approach to evaluate the risk of trip or Loss of Off-site Power (LOOP) events in nuclear power plants due to contingencies in the power grid. The proposed methodology is based on the Zone of Vulnerability concept for nuclear plants introduced by EPRI in previous work. The proposed methodology is intended to be part of an integrated probabilistic risk assessment tool that is being developed under ongoing EPRI R&D programs. A detailed analysis of many events occurred in actual nuclear plants has been performed in order to identify, classify and characterize the various vulnerability and type of failures that may affect a nuclear plant. Based the outcome of that analysis, a methodology for evaluating the impact of off-site transmission system events on nuclear plants has been outlined. It includes description of the type of contingencies and conditions that need to be included in the analysis, as well as provisions regarding the simulation tools and models that should be used in each case. The methodology is illustrated in a simplified representation of the Western Electricity Coordinating Council (WECC) system in the U.S.

Copyright © 2014 by ASME



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