S&T Project 22024 Interim Report: Learning from the Past, Inspection of Historic Penstock Lining Field Trials; Shasta Penstocks and Collbran Siphon
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.
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| 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. |
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| 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",
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| landingPage | https://data.usbr.gov/catalog/7990/item/128547 |
| modified | 2023-11-14T22:46:38Z |
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| title | S&T Project 22024 Interim Report: Learning from the Past, Inspection of Historic Penstock Lining Field Trials; Shasta Penstocks and Collbran Siphon |
