COMPARISON OF THE CATHENA MODEL OF GENTILLY-2 END SHIELD COOLING SYSTEM PREDICTIONS TO STATION DATA
CNS 24th Nuclear Simulation Symposium - 2012 October 15-16


Presented at:
CNS 24th Nuclear Simulation Symposium
2012 October 15-16
Location:
Ottawa,Canada
Session Title:
Technical 8: Benchmarks & Uncertainties

Authors:
G. Zagré (Candu Energy Inc.)
G. Sabourin (Candu Energy Inc.)
S. Chapados (Hydro-Québec)
  

Abstract

As part of  the Gentilly-2 Refurbishment Project, Hydro-Québec has elected to perform the End Shield Cooling Safety Analysis.  A CATHENA model of Gentilly-2 End Shield Cooling System was developed for this purpose. This model includes new elements compared to other CANDU6 End Shield Cooling models such as a detailed heat exchanger and control logic model. 

In order to test the model robustness and accuracy, the model predictions were compared with plant measurements.This paper summarizes this comparison between the model predictions and the station measurements. It is shown that the CATHENA model is flexible and accurate enough to predict station measurements for critical parameters, and the detailed heat exchanger model allows reproducing station transients. 

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