Details:

Alternative Title:
External Pipeline Coating Integrity - One Year Extension
Creators:
Sue, Hung-Jue
Corporate Creators:
Texas A & M University. Dept. of Mechanical Engineering
Contributors:
Chang, Benjamin T. A.
Corporate Contributors:
PolyLab LLC
Subject/TRT Terms:
[+]
Adhesion Coatings Degradation Failures Maintenance And Preservation Pipelines Recommendations Residual Stress Surface Preparation
Resource Type:
Tech Report
Geographical Coverage:
United States
Corporate Publisher:
Texas A & M University
NTL Classification:
NTL-HIGHWAY/ROAD TRANSPORTATION-Materials;NTL-ENERGY AND ENVIRONMENT-Hazardous Materials Transportation;
Abstract:
In the first two years of this DOT project, we have developed tools to calculate thermal residual stresses in external pipeline coatings by both analytical and finite element analysis methods. We have identified that residual stresses can play a critical role to cause coating disbondment in the three-layer polyolefin (3LPO) pipeline coatings. This finding has made positive impact to the 3LPO manufacturers, installers, and end users. The above study was based on the three-layer polyethylene (3LPE) pipeline coating system normally designed for service temperatures below 60 °C. There is a growing need to use high temperature pipeline coatings at above 60 °C. To meet market demands, FBE manufacturers recently have developed high Tg FBE for high temperature pipeline coating applications. The high Tg FBE is different from the regular FBE In the first two years of this DOT project, we have developed tools to calculate thermal residual stresses in external pipeline coatings by both analytical and finite element analysis methods. We have identified that residual stresses can play a critical role to cause coating disbondment in the three-layer polyolefin (3LPO) pipeline coatings. This finding has made positive impact to the 3LPO manufacturers, installers, and end users. The above study was based on the three-layer polyethylene (3LPE) pipeline coating system normally designed for service temperatures below 60 °C. There is a growing need to use high temperature pipeline coatings at above 60 °C. To meet market demands, FBE manufacturers recently have developed high Tg FBE for high temperature pipeline coating applications. The high Tg FBE is different from the regular FBE
Format:
PDF
Funding:
DTPH56-06-T-000022
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:9315c226875ba3f9fe547d0fd6d168254d43b24af560fda56d694ce5e2aa36cb
Download URL:
https://rosap.ntl.bts.gov/view/dot/36775/dot_36775_DS1.pdf
File Type:

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