A Comprehensive Update in the Evaluation of Pipelines Weld Defects

Project Categories

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• Non-destructive Testing/Evaluation
• Pipeline Design/Construction
• Weld/Fabrication Defects
• Repair/Rehabilitation

Main Objective

This project will provide a major update to the alternative girth weld defect acceptance criteria. The focus of the project will be in two primary areas: a) To update the alternative defect acceptance criteria to address the immediate need of pipeline construction in the USA, typically with pipeline longitudinal strains less than 0.5%; and b) To develop alternative defect acceptance criteria for ultrahigh strength pipelines (e.g., X100) in geotechnically challenging environments, such as arctic areas and deep water offshore. Update Appendix A of API Standard 1104 for girth weld defect acceptance criteria as specified in Federal regulations (49 CFR, Parts 192 and 195), to reflect the increased use of mechanized welding and automated ultrasonic testing in new pipeline construction.

Articles and Papers

Paper to be presented titled "Inherent Safety Factors in the API Girth Weld Defect Tolerance Analysis – Part II"

Inherent_safety_factor_in_API_-_Extended_Abstract-R1.pdf (98,554 bytes) [View] [Download/Save...]

Quarterly Status Reports

Report for Period September 9, 2003 - December 31, 2003.

Projno128_1st_QrtrlyRpt_Dec_2003_Public.pdf (27,348 bytes) [View] [Download/Save...]

Report for Period January 1, 2004 - March 31, 2004.

Projno128_2nd_QrtrlyRpt_April_2004_Public.pdf (65,606 bytes) [View] [Download/Save...]

Report for period April 1, 2004 - June 30, 2004.

Projno128_3rd_QrtrlyRpt_Aug_2004_Public.pdf (21,077 bytes) [View] [Download/Save...]

5th Quarterly Report for period ending December 31, 2005.

Projno128_5th_QrtrlyRpt_02152005_Public.pdf (19,078 bytes) [View] [Download/Save...]

One Year Progress Report submitted November 15, 2004.

Projno128_OneYearProgressReportNov_15_2004_Public.pdf (24,188 bytes) [View] [Download/Save...]

QuarterlyReport2005Q1 DTRS56-03-T-0008 Submitted13May2005FinalpPublic

QuarterlyReport2005Q1_DTRS56-03-T-0008_Submitted13May2005FinalpPublic.pdf (26,902 bytes) [View] [Download/Save...]

Public Page of the 8th Quarterly Report Ending September 30, 2005

QuarterlyReport2005Q3_DTRS56-03-T-0008_FinalPublic.pdf (17,555 bytes) [View] [Download/Save...]

Public page of the quarterly status report ending December 31, 2005

QuarterlyReport2005Q4_DTRS56-03-T-0008_FinalPublic.pdf (10,028 bytes) [View] [Download/Save...]

Public page for the first quarter of 2006

QuarterlyReport2006Q1_DTRS56-03-T-0008PublicPage.pdf (10,055 bytes) [View] [Download/Save...]

public page of the 2nd quarter 2006 report

QuarterlyReport2006Q2_DTRS56-03-T-0008PublicPageFinal.pdf (16,525 bytes) [View] [Download/Save...]

12th Quarterly Report - Public Page

QuarterlyReport2006Q3_DTRS56-03-T-0008Final_Public.pdf (16,003 bytes) [View] [Download/Save...]