Analysis of several hazardous conditions for large transfer and back-dilution sequences in Tank 241-SY-101

[摘要] The first transfer of 89 kgal of waste and back-dilution of 61 kgal of water in Hanford Tank 241-SY-101 was accomplished December 18--20, 1999. Limits were placed on the transfer and back-dilution volumes because of concerns about potential gas release, crust sinking, and degradation of mixer pump performance. Additional transfers and back-dilutions are being planned that will bring the total to 500 kgal, which should dissolve a large fraction of the solids in the tank and dilute it well beyond the point where significant gas retention can occur. This report provides the technical bases for removing the limits on transfer and back-dilution volume by evaluating the potential consequences of several postulated hazardous conditions in view of the results of the first campaign and results of additional analyses of waste behavior.

[发布日期] 2000-01-28 [发布机构] Pacific Northwest National Laboratory (U.S.)

[关键词] Safety Engineering;Hazards;Radioactive Waste Storage;Storage Facilities;Remedial Action