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CONSIDERATIONS FOR SELECTING AND APPLYING LININGS IN LARGE DIAMETER COOLING WATER PIPE AND PENSTOCKS

The installation of linings to large diameter cooling pipes and penstocks is a major investment in hydroelectric and other power plants. The application should be performed in an expedient manner to minimize outage time and should last for many years (20 years or more) without the need for maintenance painting. 

Product Number: 51218-160-SG
Author: Ray Tombaugh
Publication Date: 2018
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The installation of linings to large diameter cooling pipes and penstocks is a major investment in hydroelectric and other power plants. The application should be performed in an expedient manner to minimize outage time and should last for many years (20 years or more) without the need for maintenance painting. The latter is significantly important since many hydroelectric plants are located in remote areas. To achieve these goals, planning needs to be done long before the start of the lining process. This paper provides a compilation of the necessary tasks to plan for and implement a successful application. The factors that need to be considered when selecting a lining, the types of linings that are available and are typically used, important requirements that need to be included in a specification, and safety considerations are discussed.

The installation of linings to large diameter cooling pipes and penstocks is a major investment in hydroelectric and other power plants. The application should be performed in an expedient manner to minimize outage time and should last for many years (20 years or more) without the need for maintenance painting. The latter is significantly important since many hydroelectric plants are located in remote areas. To achieve these goals, planning needs to be done long before the start of the lining process. This paper provides a compilation of the necessary tasks to plan for and implement a successful application. The factors that need to be considered when selecting a lining, the types of linings that are available and are typically used, important requirements that need to be included in a specification, and safety considerations are discussed.

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