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Experimental Study of Moderator Circulation in CANDU6 Calandria Tank

[+] Author Affiliations
Hyoung Tae Kim, Bo Wook Rhee, Jae Eun Cha

Korea Atomic Energy Research Institute (KAERI), Daejeon, Republic of Korea

Han Seo

Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea

Sunghyuk Im

Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea

Paper No. ICONE22-31140, pp. V02BT09A052; 6 pages
doi:10.1115/ICONE22-31140
From:
  • 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

abstract

As a CANDU6 reactor has a high pressure primary cooling system and an independently cooled moderator system, the moderator in the calandria would act as a supplementary heat sink during a loss of coolant accident (LOCA) if the primary cooling and emergency coolant injection systems fail to remove the decay heat from the fuel. For the safety concern it is required to predict the 3-dimensional velocity and temperature distribution of moderator fluid to confirm the effectiveness of moderator heat sink.

Korea Atomic Energy Research Institute (KAERI) is carrying out a scaled-down moderator test program to simulate the CANDU6 moderator circulation phenomena during steady state operation and accident conditions. This research program includes the construction of the Moderator Circulation Test (MCT) facility, production of the validation data for self-reliant CFD tools, and development of optical measurement system using the Particle Image Velocimetry (PIV). In the present work the PIV technique is used to measure the velocity distributions in the scaled moderator tank of MCT under iso-thermal test conditions. The preliminary PIV measurement data are obtained and compared with CFX code predictions.

Copyright © 2014 by ASME

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