{"accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["010:10"], "contactPoint": {"@type": "vcard:Contact", "fn": "RISE Team", "hasEmail": "mailto:data@usbr.gov"}, "description": "Corrosion protection is fundamental to achieve infrastructure longevity. Coatings are the primary defense against corrosion. The Bureau of Reclamation began a field study in 1949 at Shasta Dam Unit 5 Penstock. Originally 26 different linings were installed in the field trial, seventy years later a detailed inspection was conducted in 2019, seven linings were still providing corrosion protection. Additionally in 2009, spot repairs were conducted due to failed coal tar enamel using a 100% solids epoxy and was in excellent condition after 10 years of service. Each lining was evaluated using Electrochemical Impedance Spectroscopy (EIS) to determine the barrier properties.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://data.usbr.gov/catalog/7990/item/128547", "description": "Landing page for \"S&T Project 22024 Interim Report: Learning from the Past, Inspection of Historic Penstock Lining Field Trials; Shasta Penstocks and Collbran Siphon\"", "mediaType": "text/html", "title": "RISE Item Details Page URL for \"S&T Project 22024 Interim Report: Learning from the Past, Inspection of Historic Penstock Lining Field Trials; Shasta Penstocks and Collbran Siphon\""}, {"@type": "dcat:Distribution", "description": "\"S&T Project 22024 Interim Report: Learning from the Past, Inspection of Historic Penstock Lining Field Trials; Shasta Penstocks and Collbran Siphon\" as a PDF file", "downloadURL": "https://data.usbr.gov/rise/content-rise-public/rise/catalog-item/binary/8540-2023-42_Shasta_Unit5_Inspection_Report_Final_508.pdf", "mediaType": "application/pdf", "title": "PDF File for \"S&T Project 22024 Interim Report: Learning from the Past, Inspection of Historic Penstock Lining Field Trials; Shasta Penstocks and Collbran Siphon\""}], "identifier": "https://datainventory.usbr.gov/rise/item/128547", "keyword": ["Collbran Project", "Corrosion Protection", "Equivalent Circuit Model (ECM)", "Field Electrochemical Impedance Spectroscopy (EIS) Testing", "Historic Linings", "Salt Creek Siphon", "Shasta Dam"], "landingPage": "https://data.usbr.gov/catalog/7990/item/128547", "modified": "2023-11-14T22:46:38Z", "publisher": {"@type": "org:Organization", "name": "Bureau of Reclamation"}, "spatial": "{\"type\":\"Polygon\",\"coordinates\":[[[-124.508,48.197],[-124.304,40.096],[-117.02,32.608],[-103.405,29.136],[-93.466,30.77],[-94.692,38.939],[-97.279,48.946],[-122.67,48.946],[-124.508,48.197]]]}", "title": "S&T Project 22024 Interim Report: Learning from the Past, Inspection of Historic Penstock Lining Field Trials; Shasta Penstocks and Collbran Siphon"}