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  2. Engineer Research and Development Center (ERDC)
  3. Information Technology Laboratory (ITL) - (1986 - present)
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  5. Special Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/46282
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dc.contributor.authorRay, Jason D.en_US
dc.contributor.authorThurmer, Clayton R.en_US
dc.creatorInformation Technology Laboratory (U.S.)en_US
dc.date.accessioned2022-12-22T20:09:35Zen_US
dc.date.available2022-12-22T20:09:35Zen_US
dc.date.issued2022-12en_US
dc.identifier.govdocERDC/ITL SR-22-6en_US
dc.identifier.urihttps://hdl.handle.net/11681/46282en_US
dc.identifier.urihttp://dx.doi.org/10.21079/11681/46282en_US
dc.descriptionSpecial Reporten_US
dc.description.abstractThe Engineering and Test Branch within the Division of Operations and Maintenance of the California Department of Water Resources (DWR) and U.S. Army Corps of Engineers (USACE), Sacramento District, tasked the Sensor Integration Branch (SIB) at the Engineer Research and Development Center (ERDC) to perform nondestructive testing (NDT) on the trunnion anchor rods at Oroville Dam through the use of ultrasonic guided waves. This is the fourth year of this NDT. The results of the testing are presented along with qualitative analysis in determining whether a rod is intact or compromised. Analysis is based upon the expected results from other rods at the site, knowledge of rod response at other sites, data gathered from the trunnion rod research test bed at ERDC, and comparison to the previous year’s effort.en_US
dc.description.sponsorshipPrepared for U.S. Army Corps of Engineers, Sacramento District under MIPR W62N6M13089302en_US
dc.description.tableofcontentsAbstract .......................................................................................................................................................... ii Figures ............................................................................................................................................................ iv Preface ............................................................................................................................................................. v 1 Introduction ............................................................................................................................................ 1 1.1 Background ..................................................................................................................... 1 1.2 Objectives ........................................................................................................................ 1 1.3 Approach ......................................................................................................................... 1 1.4 Scope ............................................................................................................................... 2 1.5 The guided wave test system ......................................................................................... 2 2 Pretest ..................................................................................................................................................... 4 3 Results .................................................................................................................................................... 5 3.1 Condition ......................................................................................................................... 5 3.2 2021 results compared to 2020 ................................................................................... 5 3.2.1 Results labeled as Variance from Previous Year ............................................................. 15 3.2.2 Results labeled as No Issue .............................................................................................. 17 3.2.3 Results labeled as Anomaly .............................................................................................. 17 3.2.4 Results labeled as Possible Defect .................................................................................. 17 3.2.5 Rods 4-2 and 4-14 ............................................................................................................ 17 4 Conclusion and Recommendations ................................................................................................ 27 Reference ..................................................................................................................................................... 28 Acronyms and Abbreviations .................................................................................................................... 29 Report Documentation Pageen_US
dc.format.extent38 pages / 2.99 MBen_US
dc.format.mediumPDFen_US
dc.language.isoen_USen_US
dc.publisherEngineer Research and Development Center (U.S.)en_US
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/ITL SR-22-6en_US
dc.rightsApproved for Public Release; Distribution is Unlimiteden_US
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobaten_US
dc.subjectHydraulic structuresen_US
dc.subjectHydraulic gates--Testingen_US
dc.subjectUltrasonic waves--Testingen_US
dc.subjectOroville Dam (Calif.)en_US
dc.title2021 Guided Wave Inspection of California Department of Water Resources Tainter Gate Post-Tensioned Trunnion Anchor Rods : Oroville Damen_US
dc.typeReport-
Appears in Collections:Special Report

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