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Experimental determination of lower plenum ECC injection effectiveness

Conference ·
OSTI ID:5032285
The effectiveness of lower plenum emergency core coolant (ECC) injection during a double ended offset shear cold leg break loss-of-coolant accident (LOCA) was investigated experimentally in a small-scale model of a pressurized water reactor (PWR). In order to determine relative merit of the lower plenum injection concept to mitigate the severity of a large break LOCA, data from lower plenum injection experiments were compared to data from an experiment in the Semiscale Mod-3 sytem in which cold leg ECC injection was utilized. The results indicated that lower plenum injection was extremely effective in initiating early reflooding of the core and earlier rod quenching than was observed in the cold leg injection experiment.
Research Organization:
Idaho National Engineering Lab., Idaho Falls (USA)
DOE Contract Number:
AC07-76ID01570
OSTI ID:
5032285
Report Number(s):
CONF-801102-12
Country of Publication:
United States
Language:
English