Enbridge pipeline breaks, spills 19,500 barrels, page
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Topic started on 27-7-2010 @ 09:17 PM by baddmove
HOUSTON - An oil pipeline break in Michigan on Monday shut part of a system carrying Canadian crude oil to the U.S. Midwest and southern Canada, Enbridge Energy Partners said. Read more: www.vancouversun.com...



That's right folks..oil is a gushing all over the damn place lately!
What i fail to understand is this,
How come 180,000 gallons can gush out before someone say turn it off?

Enbridge said the break is near Marshall, Mich., in the Lakehead System’s Line 6B, a 30-inch, 190,000 barrel per day line carrying light synthetic, heavy and medium crude oil from Griffith, Ind. to Sarnia, Ont. The cause of the release was under investigation. Read more: www.vancouversun.com...



No one was hurt, but about 19,500 barrels of oil was released into a creek that then carried the oil into the Kalamazoo River, an Enbridge news release said. Crews with skimming equipment were responding.

Enbridge hoped to have the line repaired and restarted by Wednesday, a spokesman said.

The break was east of Chicago and did not affect the big refineries in that area, but plants in Detroit, Mich.; Toledo, Lima and Canton, Ohio; and Sarnia and Nanticoke, Ont., were downstream from the break, industry sources said.

On the U.S. side, Marathon, Sunoco, BP and Husky did not respond to inquiries about their refineries. Marathon has refineries in Detroit and Canton, Ohio; Sunoco and BP have refineries in Toledo, and Husky has one in Lima.

On the Canadian side, officials of Imperial, Shell and Suncor could not say how their refineries in Ontario would be affected. The area is served by another Enbridge pipeline.



It actually gushed all day, this is the nice version...

source


reply posted on 31-7-2010 @ 06:09 PM by Mike6158
Good grief... If you folks knew how many miles of pipeline bisect the North American continent and how old some of them are you would be posting all kinds of hand wringing.

I would be very surprised if the leak wasn't identified by their SCADA Center within an hour or less of it occuring. A line the size of that one is monitored 24/7. Once a leak develops shut-in is initiated. You can't instantaneously stop the flow if a leak is discovered. If you do pressures in the line will surge (due to the momentum of the fluid in the line) and catastrophic failure would be possible. The line will have automated block valves at strategic locations that will be closed once the flow rate is ramped down to zero. Even so, the line will have pressure between the block valves and continued leakage is going to occur. At least until the pressure declines to zero.

There are all kinds of things that corrode pipelines. Most are unseen. Some can be determined by the use of "smart pigs" but the smart pig operation cannot be performed during normal operations. If I remember right they are required to run a smart pig once every 5 years (might be 10). Corrosion can come from internal sources (like organisms that eat oil and then excrete a substance that is corrosive to steel) or external (galvanic corrosion). Pipelines that were laid in 1914 are still in service. The alternative (which isn't even viable) would be to truck every barrel. That would decrease safety and increase the potential for environmental disaster by orders of magnitude.

[edit on 7/31/2010 by Mike6158]


reply posted on 31-7-2010 @ 06:12 PM by Mike6158
reply to post by baddmove



Based on the volume that was leaked vs the capacity of the line it didn't "actually gush all day"


reply posted on 31-7-2010 @ 06:14 PM by baddmove
reply to post by Mike6158



How long does it take to gush 180,000 gallons of oil?

just wondering..


reply posted on 31-7-2010 @ 06:35 PM by baddmove
reply to post by Danbones



great..

1,980 miles of possible pipe breakage..

yep..good idea..


reply posted on 1-8-2010 @ 01:01 PM by Mike6158
Originally posted by baddmove
reply to
post by Mike6158



How long does it take to gush 180,000 gallons of oil?

just wondering..


How much pressure is on the line and what size is the hole?
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