Title: SEMISCALE BLOWDOWN AND EMERGENCY CORE COOLING (ECC) PROJECT TEST REPORT: TESTS 848, 849, AND 850 (ECC INJECTION).
Abstract: invalid any direct extrapolation of the results from this test to a reactor. This test was intended only for purposes of analysis methods development and evaluation. Semiscale Test 845 was initiated by a cold leg (inlet piping) break of a system that includes both a single operating loop and a vessel with a simulated (electrically heated) reactor core, and was the first semiscale test in which ECC was injected. The objective of this test was to obtain initial experimental information relative to the effects of ECC injection on cooling fluid availability to a heated core and on primary decompression phenomena. The purpose of this report is to present the data from Semiscale Test 845 in sufficient detail to be directly usable by those groups engaged in loss-of-coolant accident analysis for pressurized water reactors. The results presented include pressure, fluid and material temperatures, fluid density, flow rates, and fluid quality as functions of time.