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

Technical Report · Thu Sep 27 00:00:00 EDT 2018

DOI:https://doi.org/10.2172/1475312· OSTI ID:1475312

Smith, Paul H. ^[1]; Oka, Jude ^[1]; Karns, Tristan ^[1]; Stone, Timothy ^[1]; Reeves, Kirk ^[1]; Gigax, Jonathan ^[1]; Vaidya, Raj ^[1]; Wendelberger, James ^[1]; Guadagnoli, Nick ^[1]; Kelly, Elizabeth ^[1]; Gregory, Dakota ^[1]; Cunningham, Robin ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

During acceptance testing at Nuclear Filter Technologies (NFT) in May, 2018 of a batch of 150 SAVY-4000 containers (3 Qt), 89 containers were rejected due to failing and higher than normal helium leakage test results (see attachment NC#18-033). A total of 56 of those rejected failed the maximum allowed helium leakage rate criterion of 1.0E-05 std cc/sec specified in 55Y-002926 Rev. G, SAVY-4000 fabrication Specification. In addition, 33 containers were also rejected by the manufacturer with helium leakage rates measured between 1.0E-05 and 1.0E-06 std cc/sec (NFT NC# 18-033) because the containers were manufactured from the same lot of base material and the helium leakage rates were outside of the expected range. Upon discovery of the helium leakage test failures of the 3 Qt SAVY’s, NFT pulled the inventory of containers that failed the helium leakage tests and performed a detailed inspection of the lid assemblies. Small voids were discovered by visual inspection on opposing sides of the lids.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1475312
• Report Number(s): LA-UR-18-29195
• Country of Publication: United States
• Language: English

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