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Displaying records 173 through 173 of 2180
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Title: An analysis of ‘significant’ SCC data reported to the National Energy Board
Category: Technical papers from the Journal of Pipeline Engineering
Downloadable: Yes 
Catalog No.: 2115s
Date of Publication: December, 2007
Price: $25.00 US
Authors: Joe Paviglianiti, Dr Alan Murray, and V Dhawan
Abstract: AS A RESULT of numerous stress-corrosion cracking (SCC) failures on Canadian pipelines, the National Energy Board (NEB) held an inquiry in 1995 to determine the extent of knowledge and occurrence of SCC on Canadian oil and gas pipelines. The report of the inquiry, which was published in December, 1996, issued 27 recommendations to promote public safety by encouraging the sharing of information on the extent of SCC and methods for managing and mitigating it.

Recommendation 6-6, related to the SCC management programme, stated “the NEB requires companies to report immediately to the NEB any finding of ‘significant’ SCC and any immediate mitigative actions taken…”. The definition of ‘significant’ SCC adopted by the NEB is based on the definition proposed by the Canadian Energy Pipeline Association (CEPA). Subsequently the NEB has required companies to submit this information and has used it to monitor the extent and management of ‘significant’ SCC on NEB-regulated pipelines. This paper examines trends identified from the 355 ‘significant’ SCC reports submitted to the NEB. The analysis examines ‘significant’ SCC trends associated with product shipped, coating type, and the location of SCC on the pipe. In addition the paper highlights the length and depth of ‘significant’ SCC features, their methods of detection, and the mitigation steps used to neutralize any threat posed by the SCC. From the information presented in the paper, companies and regulators should be able to compare their ‘significant’ SCC findings with the NEB data, hopefully aiding in the continued management of SCC.

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