Coating Maintenance Planning to Ensure Reliable Water and Power Delivery

[...]Reclamation contributes to 17% of the nation's hydropower through 53 owned and operated hydroelectric power plants, including the Grand Coulee Dam in Washington (Fig. 1), the Hoover Dam in Nevada, and the Buffalo Bill Dam in Wyoming. In order, they show an embrittled coal tar enamel coatin...

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Bibliographic Details
Published inJournal of protective coatings & linings Vol. 31; no. 5; p. 52
Main Authors Merten, Dobbi Jo E, Pepi, Richard, Tordonato, David, Skaja, Allen
Format Journal Article
LanguageEnglish
Published Pittsburgh Technology Publishing Company 01.05.2014
Subjects
Construction
Corrosion
Costs
Electric power
Electricity generation
Enamel
Hydroelectric plants
Infrastructure
Inspections
Irrigation
Pipelines
Protective coatings
Repair & maintenance
VOCs
Volatile organic compounds
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Summary:[...]Reclamation contributes to 17% of the nation's hydropower through 53 owned and operated hydroelectric power plants, including the Grand Coulee Dam in Washington (Fig. 1), the Hoover Dam in Nevada, and the Buffalo Bill Dam in Wyoming. In order, they show an embrittled coal tar enamel coating at the end of its useful service life; a spot-repaired coating system with visible corrosion of the leading edge of stay vanes; and a delaminated epoxy (turbine runner blade tips) adjacent to coal tar enamel overcoated with degraded paint (below turbine runner)- both experiencing cavitation damage. A balanced inspection determines the following: * infrastructure history and specifications- previous repair records, problem areas, and construction challenges or limitations; * condition evaluations-visual defects, film and ultrasonic thickness testing, hazardous materials testing; and * engineering options and recommendations-spot repair, overcoat, and recoat.
ISSN:8755-1985