Nuclear Criticality Safety Concern in Furnace Vacuum Filter Housing
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Type:  Lessons Learned

Publisher:  Fluor Hanford, Richland, WA

Published As:  Public

Date: 

Topics:  Nuclear/Nuclear Safety, Engineering, Operations

On April 25, 2006, at the Y-12 Complex, Oak Ridge, Tennessee, non-destructive analysis (NDA) measurements of the casting vacuum filter housing indicated the possible presence of an unexpected buildup of uranium mass in excess of the nominal cleanout threshold. The unexpected accumulation of uranium was discovered as a result of performing multiple NDA measurements on the filter housing and identifying a deposit on the bottom head of the filter housing.

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