Estimation of the Time for Steam Generator Trip Due to Cyber Intrusions
The time required to trip a pressurized water reactor (PWR) by inserting malicious signals into its steam generator (SG) level control system has been studied using the GPWR Simulator. A semi-analytical model is developed to approximately reproduce the simulator response and understand the dynamics of the control unit. A Python interface is developed for the GPWR framework to simulate different spoofing scenarios and post-process the related data. We observe that the trip times predominantly depend on flow mismatch and/or level errors. Controller parameters, including the integral time and gain constants, either speed up or slow down the rate of progression to a trip setpoint but do not cause a trip by themselves. The results show roughly how long the operators would have to respond to an attack, given a specific set of spoofing signals within the issue space analyzed
Year of publication: |
[2022]
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Authors: | Patel, Japan Ketan ; Varuttamaseni, Athi ; Youngblood III, Robert W. ; Lee, John C. ; Wacker, Steven ; Pires Barbosa, Rafael ; Guo, Junjie |
Publisher: |
[S.l.] : SSRN |
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