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AREVA’s Test Facility KATHY: Robust Critical Heat Flux Measurements, a Prerequisite for Reliable CHF Prediction

[+] Author Affiliations
O. Wieckhorst, J. Kronenberg, H. Gabriel, S. Opel, D. Kreuter

AREVA GmbH, Erlangen, Germany

T. Berger

AREVA GmbH, Karlstein, Germany

R. Harne

AREVA Inc., Lynchburg, VA

K. Greene

AREVA Inc., Richland, WA

F. Filhol

AREVA NP, Lyon, France

Paper No. ICONE22-30761, pp. V02BT09A021; 8 pages
  • 2014 22nd International Conference on Nuclear Engineering
  • Volume 2B: Thermal Hydraulics
  • Prague, Czech Republic, July 7–11, 2014
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-4591-2
  • Copyright © 2014 by ASME


The primary tool for assuring the heat removal from the fuel design’s rod surfaces is properly represented in the numerical simulations of a LWR fuel assembly design is the critical heat flux (CHF) or dryout correlation.

During the last decade, AREVA has compiled unique experience in correlation development that has led to an improved development process to meet increased technical challenges. This is based upon the high level of expertise in CHF measurements for PWR and BWR fuel assembly designs gained by AREVA at its KATHY facility (KArlstein Thermal HYdraulic facility). The utilization of KATHY in conjunction with this improved development process is a key factor in ensuring reliable CHF prediction for safety analysis application. This paper describes the capabilities of the KATHY loop and the process used by AREVA to attain high quality CHF measurements.

Copyright © 2014 by ASME



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