Guidelines for the Identification of SCC Sites and the Estimation of Re-Inspection Intervals for SCCDA

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• Direct Assessment
• Stress Corrosion Cracking

Main Objective

PRCI will develop a set of quantitative guidelines for predicting where and when SCC might be an integrity threat for gas and liquid hydrocarbon pipelines. These guidelines would complement other methodologies, such as the NACE RP0204, ASME B31.8S, and the CEPA Recommended Practices. These guidelines are aimed at improving the industry's ability to locate SCC in the field where the in-ditch protocols detailed in NACE RP0204 would be followed. In addition, the quantitative nature of the proposed guidelines would allow more-informed estimation of the re-inspection interval for repeat DA procedures.

Public Abstract

Stress corrosion cracking (SCC) presents a threat to the integrity of underground liquid and gas pipelines. There are a number of ways of managing this threat, including the Direct Assessment (DA) of potentially susceptible lines. The aim of the proposed work is to complement and build upon the existing SCC DA procedures to better identify potential SCC sites for direct examination and to predict how frequently such inspections should be made.

The guidelines are designed to be implementable, flexible, adaptable, non-prescriptive, and quantitative. The guidelines will be designed to use input data readily available to all pipeline companies. The guidelines will be mechanistically based and will be applicable to both nearneutral and high-pH SCC, to all forms of coating, to new and existing pipe, for liquid and gas pipelines, and on both a regional and local scale.

Quarterly Status Reports

Administration and Reporting - Public Page

DOTDTPH56-06-000013Q3RPTSCCFeb07v1Public.pdf (62,684 bytes) [View] [Download/Save...]

Administration and Reporting - Public Page

DOTDTPH56-06-T-000013SCCQ4QuarterlyReportMay07FinalPublic.pdf (176,119 bytes) [View] [Download/Save...]

Administration and Reporting - Public Page

DOTQ2RPTDTPH56-06-T-000013-Public.doc (50,688 bytes) [View] [Download/Save...]

Administration and Reporting - Public Page

DTPH56-06-T-0000013QuarterlyReportAugust07PublicFinal.pdf (144,934 bytes) [View] [Download/Save...]

13th Qtr Administration and Reporting - Public Page

DTPH56-06-T-0000013QuarterlyReportAugust2009Q13Final-PublicPage.pdf (102,544 bytes) [View] [Download/Save...]

Administration and Reporting - Public Page

DTPH56-06-T-0000013QuarterlyReportFeb08_FINALv2_PUBLIC.pdf (47,799 bytes) [View] [Download/Save...]

12th Qtr Administration and Reporting - Public Page

DTPH56-06-T-0000013QuarterlyReportMay2009Q12Final-PublicPage.pdf (113,309 bytes) [View] [Download/Save...]

Administration and Reporting - Public Page

DTPH56-06-T-0000013QuarterlyReportNovember07v3(final)PUBLIC.pdf (83,012 bytes) [View] [Download/Save...]

11th Quarterly Status Report - Public Page

DTPH56-06-T-0000013_Quarterly_Report_February_2009_Q11_FINAL_PUBLIC.pdf (98,889 bytes) [View] [Download/Save...]

10th Quarterly Status Report - PUBLIC PAGE

DTPH56-06-T-0000013_Quarterly_Report_November_2008_(Q10)_FINAL_PUBLIC.pdf (46,913 bytes) [View] [Download/Save...]

9th Quarterly Status Report (Public Page)

DTPH56-06-T-0000013_Quarterly_Report_PUBLIC_August_2008_Final_(Q9).pdf (55,398 bytes) [View] [Download/Save...]

I believe this report was submitted in May 2008 as it is showing up as sumitted on the "deliverables" chart, however it is not showing up on the website's SCC-1 quarterly report under documents submitted (file cabinet). Therefore I am submitting this document now under "other files". Please post under the quarterly report section. Thanks, Mary