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Characterization Tests on the SIT Injection Capability of the ATLAS for an APR1400 Simulation  

Park, Hyun-Sik (Korea Atomic Energy Research Institute)
Choi, Nam-Hyun (Korea Atomic Energy Research Institute)
Park, Choon-Kyung (Korea Atomic Energy Research Institute)
Kim, Yeon-Sik (Korea Atomic Energy Research Institute)
Publication Information
Journal of Energy Engineering / v.17, no.2, 2008 , pp. 67-76 More about this Journal
Abstract
A thermal-hydraulic integral effect test facility, ATLAS (Advanced Thermal-hydraulic Test Loop for Accident Simulation), has been constructed at KAERI (Korea Atomic Energy Research Institute). Recently several integral effect tests for the reflood period of a LBLOCA (Large Break LOss of Coolant Accident) of the APR1400 have been performed with the ATLAS. In the APR1400 a high flow condition is changed to a low flow condition due to an fluidic device during an operation of the SIT. As the self-controlled fluidic device was not installed in the ATLAS, a set of characterization tests was performed to simulate its injection capability from the SIT for the APR1400 simulation. In the ATLAS the required SIT flow rate in the high flow condition was acquired by installing orifices with an optimized flow area to throttle the SIT discharge line and the low flow condition was achieved by changing the opening of the flow control valve in the SIT injection line. The test results showed that the safety injection systems of the ATLAS could simulate the required high and low flow rates of the SIT for the APR1400 simulation efficiently.
Keywords
ATLAS; Safety injection system; APR1400; LBLOCA; Integral effect test;
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