Control of radiolytic gases in liners of radioactive zeolites
Early in the design evolution for the SDS demineralizer vessels (liners) at TMI-2, it was recognized that the production of gases due to the radiolytic decomposition of water in the liners would present a safety concern for in-plant storage, shipping, and disposal. Radiolytic gases were encountered during preparations to ship highly loaded zeolites to Pacific Northwest Laboratories (PNL) for vitrification R and D studies. A DOE-sponsored R and D program was initiated at Rockwell Hanford Operations and at Westinghouse Hanford Engineering Development Laboratories to define the optimum conditions for the use of an aluminum oxide coating with palladium-platinum as catalyst. A catalyst volume of 130 cc was effective in controlling and recombining H/sub 2//O/sub 2/ gases at test rates of 300 cc (STP) per hour. Placing the catalyst inside the 0.28 m/sup 3/ zeolite containers is performed remotely. Tests show the catalyst to be effective during both normal and upset conditions.
- Research Organization:
- General Public Utilities, Parsippany, NJ (USA); Rockwell International Corp., Richland, WA (USA). Rockwell Hanford Operations; EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6776950
- Report Number(s):
- EGG-TIO-M-01482; CONF-821103-79; ON: DE83005546
- Resource Relation:
- Conference: American Nuclear Society winter meeting, Washington, DC, USA, 14 Nov 1982
- Country of Publication:
- United States
- Language:
- English
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