Minnesota oil pipeline explosion and fire kills two
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Friday, November 30, 2007
A major oil pipeline in Minnesota exploded and caught fire, killing two workers. The pipeline carries oil from Saskatchewan, Canada to close to Chicago, United States, representing 16% of America’s total oil imports.
The section of the pipe that exploded was undergoing maintenance at the time to address a pinhole leak first identified three weeks earlier, and patched at the time with a metal sleeve. On Wednesday, the entire section was removed and replaced with a new one. When oil was reintroduced on Thursday morning, oil leaked where the new section joined the pre-existing pipe, triggering the fatal explosion.
The fire was extinguished later the same day.
The line is split between four separate pipes. After the explosion, all four pipes were shut down, resulting in the global price surge, but this subsided for the most part after it became clear that the three undamaged pipelines had returned to normal operation, restoring 80% of the line’s capacity, and that the accident pipe is expected to be back in use in a matter of days.
“There were no problems found in that area where the leak occurred,” reporters were told by Larry Springer, spokesman for Enbridge, the Canadian company that owns the line. High-tech equipment had been through the line in 2006 to check for any signs of problems.
Enbridge identified the deceased as Dave Mussati Jr. and Steve Arnovich, both of whom were contract workers based in Superior, Wisconsin. The damaged section of pipe is in Clearbrook, which is approximately 350 miles Northwest of Minneapolis.
Enbridge metallurgists have been sent to examine the failed section in an effort to determin the cause of the accident. Other Enbridge workers are working to clear spilled oil from the site. It is expected that once this is complete, the pipe will return to service.
Global crude oil prices temporarily spiked by over US$4 per barrel but closed yesterday slightly above original prices.
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December
10
Los Angeles undergoing large power outage
Los Angeles undergoing large power outage
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Monday, September 12, 2005
A power outage in a large portion of Los Angeles, California occurred at approximately 13:00 PST (20:00 UTC) on Monday. Reports from the Los Angeles Department of Water and Power indicate that the incident was caused by a worker who accidentally cut a line. The outage caused a chain reaction that took out power to a large part of the city.
According to local television stations, power is being returned to some of the city, including the UCLA Medical Center. Police are on “full tactical alert”, meaning that they will only respond to serious calls and all officers must remain on duty. Most officers are directing traffic.
Los Angeles International Airport briefly was affected but generators engaged shortly thereafter. No flights were delayed or cancelled.
According to the Department of Water and Power, the shutdown happened because of a mechanical problem at two receiving stations. The system automatically triggered a shutdown when a line was cut. DWP spokesman Ron Deaton said that if there is an increase in the power stations automatically shut down. “You cut the wrong wire and it triggers the system to shut down. We have finished repairing the transmission systems. Some units are not up yet, but we have other generating parts of the system. All that remains is the distribution of the power to the individual customers.”
The DWP is currently restoring power by redirecting it from other areas.
The DWP, LAPD, the DOD and Department of Homeland security immediately assured the public that the power outage has nothing to do with terrorism or sabotage, and that the identity of the worker(s) who cut the power lines will not be released.
