Influence of Key Parameters on the APR1400 In-Containment Refueling Water Storage Tank Hydrodynamic Loads

概要

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A series of sparger tests have been conducted to investigate the performance of a steam sparger, which will be used in a Korean Advanced Power Reactor, APR1400. The tests have been conducted at the Blowdown and Condensation Loop in the Korea Atomic Energy Research Institute using a prototypic steam sparger. The major test parameters include amount of air mass and air temperature in the discharge line, valve opening time, steam mass flow rate, and water temperature and level in the In-Containment Refueling Water Storage Tank. The hydrodynamic loads induced by the air clearing phenomenon during typical operating conditions seem to be dependent on the valve opening time, steam mass flow rate, submergence of a sparger, and distance between the sparger and the structure. The effect of the amount of air mass in the discharge line and the water temperature to the peak load seems to be negligible for a given range of parameters. The hydrodynamic load induced by the prototypic steam sparger was less than those expected in a BWR and the steam sparger tested in this program can be used satisfactorily for the APR1400.
一般社団法人日本原子力学会の論文
2003-10-25