Hussein Gamal, Aly Shaaban, Mohamed Abdulhameed, Ashrakat Helal, Menna Mohamed, and Ayah Elshahat*
Nuclear and Radiation Engineering Department, Faculty of Engineering, Alexandria University, Egypt
*Corresponding Author: Ayah Elshahat, Nuclear and Radiation Engineering Department, Faculty of Engineering, Alexandria University, Egypt.
Received: May 13, 2022; Published: July 29, 2022
System codes have always been used to ensure the safety of nuclear reactors in both transient and accident conditions. This paper uses RELAP-SCDAPSIM to perform a safety analysis of VVER-1000 during a reactor coolant pump (RPC) trip in the absence of the Reactor Power Limitation Controller (RPLC). Based on the single-failure criterion, The malfunction of RPLC activates the Reactor Power Controller (RPC) causing scram. Thermal imbalance and flow reversal are the most characteristic consequences of RCP trip. The interplay of these two phenomena in the existence of scram is thoroughly examined, and the effect on reactor parameters is discussed. It has been found that a new steady state is established within 400 seconds of transient initiation, and all the acceptance criteria have been fulfilled. It can be concluded that although scram is not normally effected in response to an RCP trip, VVER-1000 can safely respond to this transient in the absence of the RPLC, and maintain a steady state without any operator intervention for at least three hours.
Keywords: VVER-1000; Pump Trip; Scram; RELAP-SCDAPSIM; Safety Analysis
Citation: Ayah Elshahat., et al. “Analysis of the Pump Trip Transient in VVER-1000". Acta Scientific Applied Physics 2.8 (2022): 21-27.
Copyright: © 2022 Ayah Elshahat., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.