Transient moisture migration in concrete during severe reactor accidents

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6290118

Kroeger, P G; Shiina, Y

In the most severe hypothetical core heatup accidents in High Temperature Gas Cooled Reactors, the heatup of the concrete reactor vessel can result in gas release from degrading concrete which can ultimately lead to containment building failure. This gas release is largely affected by the moisture migration during concrete heatup. Moisture migration in concrete is also of interest in Light Water Reactors (LWR) core meltdown accidents. Therefore, the general problem of moisture migration in a heated concrete slab has been analyzed, including the effect of water evaporating close to the heated surface and recondensing in cooler regions. Results for early phases of core heatup transients are being given. Their implication on the accident progression is being discussed.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6290118
• Report Number(s): BNL-NUREG-35180; CONF-840914-17; ON: TI85000589
• Country of Publication: United States
• Language: English

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