Los Alamos National Laboratory Lessons Learned for Fiscal Year 2018: SAVY-4000 Lid Bar Stock Issue

Smith, Paul H.; Oka, Jude M.; Karns, Tristan; Stone, Timothy Amos; Reeves, Kirk Patrick; Gigax, Jonathan; Vaidya, R. U.; Wendelberger, James G.; Guadagnoli, Nick; Kelly, Elizabeth Joan; Gregory, Dakota; Cunningham, Robin J.

doi:10.2172/1475312

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2020

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“…The outer and inner condition of the SAVY container were relatively pristine the sealing surfaces and functional closure mechanism of the container were no impeded. This SAVY was selected due to an issue outlined in Los Alamos National Laboratory Lessons Learned for Fiscal Year 2018 [11] where an issue with the use of bar stock as the lid material caused small failing leaks. In an extent of condition analysis, this container was tagged as having a higher then typical helium leak rate from the vendor, NFT Inc.…”

Section: Visual Inspectionsmentioning

confidence: 99%

Surveillance Report on SAVY 4000 and Hagan Nuclear Material Storage Containers Update for FY2020

Karns

Davis

Duque

et al. 2020

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The plan is modified as necessary to ensure that any issues identified during surveillance or laboratory studies are examined in future surveillances, and that any lifetime implications are taken into account. Under the plan, overall container integrity is evaluated by a combination of visual inspections and photographs. Multiple measurements are made to assess the SAVY 4000 performance, including, helium leakage rate, O-ring hardness (durometer), O-ring compression set, filter performance and filter water resistance. The containers for surveillance are chosen annually based on the previous surveillance program results and observations. The surveillance plan targets items believed to provide the greatest challenge to the SAVY 4000 container integrity.

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Section: Visual Inspectionsmentioning

confidence: 99%