Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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LBLOCA AND DVI LINE BREAK TESTS WITH THE ATLAS INTEGRAL FACILITY

  • Baek, Won-Pil (Thermal Hydraulics Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Yeon-Sik (Thermal Hydraulics Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Choi, Ki-Yong (Thermal Hydraulics Safety Research Division, Korea Atomic Energy Research Institute)
  • Published : 2009.08.31
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Abstract

This paper summarizes the tests performed in the ATLAS facility during its first two years of operation (2007${\sim}$2008). Two categories of tests have been performed successfully: (a) the reflood phase of the large-break loss-of-coolant accidents in a cold leg, and (b) the breaks in one of four direct vessel injection lines. Those tests contributed to understanding the unique thermal-hydraulic behavior, resolving the safety-related concerns and providing an evaluation of the safety analysis codes and methodology for the advanced pressurized water reactor, APR1400. Several important and interesting phenomena have been observed during the tests. In most cases, the ATLAS shows reasonable accident characteristics and conservative results compared with those predicted by one-dimensional safety analysis codes. A wide variety of small-break LOCA tests will be performed in 2009.

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References

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  1. An Integral Effect Test on the Reflood Period of a Large-Break LOCA for the APR1400 Using ATLAS vol.170, pp.1, 2010, https://doi.org/10.13182/NT10-A9449
  2. Effects of Break Size on Direct Vessel Injection Line Break Accidents of the ATLAS vol.175, pp.3, 2011, https://doi.org/10.13182/NT11-A12509
  3. Major Achievements and Prospect of the ATLAS Integral Effect Tests vol.2012, pp.1687-6083, 2012, https://doi.org/10.1155/2012/375070
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