Experimental Study of Hydrogen Combustion During DCH Events in Two Different Scales
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
C1-1 Molten Core Natural Convection, Physico-Chemical Phenomena, and Direct Containment Heating by D

Leonhard Meyer (Karlsruhe Institute for Technology)
Giancarlo Albrecht (Karlsruhe Institute for Technology)


Hydrogen combustion tests were performed in two different size facilities to reproduce hydrogen effects during a severe accident with high pressure melt ejection (HPME) and direct containment heating (DCH). The hydrogen was blown out of a pressure vessel into a constrained compartment, modeling the reactor pressure vessel and the reactor pit, respectively, and from there into a large vessel, modeling the containment. A number of distributed igniters simulated hot melt particles. Tests with and without steam and with concentrations of preexisting hydrogen in the containment atmosphere between 0 and 8% were conducted. The paper presents results of two test series with eight and nine tests each.

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