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09051 Methodologies for Evaluating and Qualifying External Pipeline Coatings for Northern Pipelines

Picture for 09051 Methodologies for Evaluating and Qualifying External Pipeline Coatings for Northern Pipelines
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Product Number: 51300-09051-SG
ISBN: 09051 2009 CP
Author: Alex Doiron and Sankara Papavinasam
Publication Date: 2009
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$20.00
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The design of coatings must be adequate to protect pipelines under long-term, severe environmental conditions, including the extreme climatic conditions that will apply in the North before the pipe is installed and operation begins. Practices and standardised methodologies for evaluating and qualifying pipeline coatings for application in northern pipelines are discussed. Results from laboratory and field experiments, carried out under the conditions to which coatings will be exposed during construction, are presented. Based on one-year laboratory experiments in which samples were exposed to temperatures as low as -45oC and three-year data from the field experiments, it is concluded that Canadian Standards Association (CSA) standards CSA Z662, CSA Z245.20 and CSA Z245.21 adequately cover evaluation of coatings for northern pipelines. However, in order to evaluate the effects of low temperatures, the specimens should be exposed for at least four months. Coatings qualified by CSA Z245.21 system B1 and B2 are less affected by exposure to low temperatures than those qualified by CSA Z245.21 system A1 and CSA Z245.20.
The design of coatings must be adequate to protect pipelines under long-term, severe environmental conditions, including the extreme climatic conditions that will apply in the North before the pipe is installed and operation begins. Practices and standardised methodologies for evaluating and qualifying pipeline coatings for application in northern pipelines are discussed. Results from laboratory and field experiments, carried out under the conditions to which coatings will be exposed during construction, are presented. Based on one-year laboratory experiments in which samples were exposed to temperatures as low as -45oC and three-year data from the field experiments, it is concluded that Canadian Standards Association (CSA) standards CSA Z662, CSA Z245.20 and CSA Z245.21 adequately cover evaluation of coatings for northern pipelines. However, in order to evaluate the effects of low temperatures, the specimens should be exposed for at least four months. Coatings qualified by CSA Z245.21 system B1 and B2 are less affected by exposure to low temperatures than those qualified by CSA Z245.21 system A1 and CSA Z245.20.
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