Semiscale Blowdown and Emergency Core Cooling (Ecc) Project Test Report: Tests 822 and 823.

Semiscale Blowdown and Emergency Core Cooling (Ecc) Project Test Report: Tests 848, 849, and 850 (Ecc Injection).

“…effect of ECC injection on: primary system decompression (6) The forces generated during blowdown and the mechanical response of system components to those forces.…”

“…This uniformity corresponds to the pressure histories presented earlier (Figure 16) which indicated very little pressure difference between the vessel plenums after 0.8 sec. About 33 sec after rupture, the thermocouples located in the inlet plenum (5 in. below the lower grid plate) indicated the presence of ECC fluid.…”

“…The differential pressure measurement across the bypass line from Station 4 to Station 6 for Test 849, shown in Figure 49, recorded pressure oscillatione of & 0.5 psi just prior to opening of the valve. These oscillations subsequently diminished to f 0.25 psi.…”