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Advanced test reactor countercurrent flow experiment

Conference · · Transactions of the American Nuclear Society; (USA)
OSTI ID:6371584
; ; ;  [1]
  1. Idaho National Engineering Lab., Idaho Falls (USA)
A series of countercurrent flow limiting (CCFL) experiments in a small-scale hydraulic facility at Idaho National Engineering Laboratory have recently been completed. The experiments were carried out in thin rectangular flow channels (0.001 {times} 0.064 {times} 1.4 m) representative of the flow gaps between adjacent fuel assemblies in the core of the advanced test reactor (ATR). The primary objective of this study was to collect CCFL experimental data under conditions postulated for a hypothetical large-break loss-of-coolant accident and to compare the data with existing CCFL correlations. In case of such an accident, the emergency core cooling systems reflood the reactor core and provide coolant for the flow channel between the side plates through either the top or the bottom of the flow channel. However, along the flow channel passage, the flow of coolant may be limited by upflowing steam generated from water vaporization, such as in the countercurrent flow limit.
OSTI ID:
6371584
Report Number(s):
CONF-900608--
Conference Information:
Journal Name: Transactions of the American Nuclear Society; (USA) Journal Volume: 61
Country of Publication:
United States
Language:
English