Air passivation of metal hydride beds for waste disposal

Journal Article · Tue Jul 15 04:00:00 EDT 2008 · Fusion Science and Technology

OSTI ID:22109359

Klein, J. E.; Hsu, R. H. ^[1]

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1. Savannah River National Laboratory, Aiken, SC 29808 (United States)

One waste acceptance criteria for hydride bed waste disposal is that the bed be non-pyrophoric. Batch-wise air ingress tests were performed which determined the amount of air consumed by a metal hydride bed. A desorbed, 4.4 kg titanium prototype hydride storage vessel (HSV) produced a 4.4 deg.C internal temperature rise upon the first air exposure cycle and a 0.1 deg.C temperature rise upon a second air exposure. A total of 346 sec air was consumed by the bed (0.08 sec per gram Ti). A desorbed, 9.66 kg LaNi{sub 4.25}Al{sub 0.75} prototype storage bed experienced larger temperature rises over successive cycles of air ingress and evacuation. The cycles were performed over a period of days with the bed effectively passivated after the 12. cycle. Nine to ten STP-L of air reacted with the bed producing both oxidized metal and water. (authors)

• OSTI ID: 22109359
• Journal Information: Fusion Science and Technology, Journal Name: Fusion Science and Technology Journal Issue: 1 Vol. 54; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
AIR
DESORPTION
HYDRIDES
LITHIUM
PASSIVATION
TITANIUM
WASTE DISPOSAL
WASTES