Mark III Confirmatory Test Program: 1/root 3 scale condensation and stratification phenomena, Test Series 5807

A series of steam and liquid blowdown tests was performed to evaluate condensation phenomenon and suppression pool thermal stratification for the Mark III Pressure Suppression Containment System. The tests were conducted at the General Electric Pressure Suppression Test Facility in San Jose, California. The volumetric scale factor of the facility was 1:130, based on the BWR/6-251 series Mark III containment design. The pool and vent system both represented /sup 1///sub 3/ flow area scale mockups of an 8/sup 0/ sector of the Mark III containment, including three 15/sup 7///sub 8/ in. (403 mm) diameter horizontal vents. The test parameters were simulated break size, initial suppression pool temperature, and saturated liquid or vapor blowdown. Particular emphasis was placed on pool dynamic response to a simulated loss-of-coolant accident, including chugging phenomenon, containment wall, weir wall, and vent loading and pool thermal response.