Ruptured Mich. oil pipeline shows lengthwise rip

Aug 08, 2010

(AP) -- Officials say a ruptured section of pipeline that spewed oil into a southern Michigan river had a lengthwise rip that likely is less than five feet long.

The and pipeline company Enbridge Inc. said Saturday the section was removed a day earlier in Calhoun County and will be shipped to a National Transportation Safety Board lab in Washington, D.C.

Enbridge Executive Vice President Steve Wuori (WUHR'-ee) says officials on the scene can't tell from looking at the pipeline what led to the failure.

Enbridge reported the spill July 26. The EPA says more than 1 million gallons of oil have flowed into the Kalamazoo River and other waterways. The company estimates the total at 820,000 gallons.

The pipeline runs between Griffith, Ind., and Sarnia, Ontario.

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User comments : 4

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not rated yet Aug 08, 2010
officials on the scene can't tell from looking at the pipeline what led to the failure.
But many causes are eliminated by the crack not being transverse or spiral.
not rated yet Aug 08, 2010
Have they actually shut off the flow of oil? Is there some kind of valve problem? They didn't mention that little tidbit either.
not rated yet Aug 08, 2010
I guess they shut off the flow, it says they shipped a replacement section.
not rated yet Aug 09, 2010
The key here is to understand what kind of pipe was used. If it is longitudinally seam welded pipe and the crack is immediately adjacent to the weld zone this indicates one type of failure mode. If seamless pipe, look for corrision induced cracking.

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