Environment  
comments_image Comments

The Wicked Brew That Would Be Transported in the Keystone XL Pipeline

The pipeline isn't for oil, it's for a toxic fossil fuel cocktail called “DilBit.”

Continued from previous page

 
 
Share
 
 
 

Downstream from tailing ponds, as in Fort Chipewyan, spikes of lupus, renal failure, hyperthyroidism and 100 of the town’s largely indigenous population of 1,200 have died of cancer. Many rare cancers.

DilBit’s character really shines its deepest darkest black when spilled into the environment.

Actually, a cup of coffee might spill, a glass of milk; eruption is a better term for a DilBit pipeline or pump station, “event”. 

Permanent Pollution

Keystone was predicted to spill no more than once every seven years.

After being in operation less than one year, Keystone tallied its eleventh spill—at a pump station, which TransCanada insists “don’t count”. 

It was in Ludden, North Dakota, May 7, 2011. A 3/4-inch pipe fitting failed under the pressure, erupting DilBit sixty feet high—21,000 gallons in minutes.

July 26, 2010 had already shown us what a DilBit pipeline at 1440 psi and 160 degrees F can do. Line 6B of the Enbridge Energy Partners Lakehead system ruptured, erupting a million gallons of DilBit into Michigan’s Kalamazoo River; the “Marshall spill”.

Since pipeline operators are not required to say what they are piping, emergency responders didn’t discover until ten days later that what turned the Kalamazoo River black was DilBit. Original expectations were that cleanup would take a few months. But after two years the job was not over and apparently never will be. The EPA has declared thirty miles of the Kalamazoo River “  essentially permanently polluted”.

Typically, 90% of crude oil spilled into water can be captured with booms and skimmers.

DilBit is from 50% to 70% bitumen, diluted with natural gas condensates collectively called diluents (exact composition of diluents is a “trade secret”). DilBit in the Kalamazoo River was 70% bitumen. After diluents separated out, bitumen sank and coated the riverbed.

Coincidentally, nine days before DilBit tarred the Kalamazoo River, the EPA warned that the “proprietary nature” of DilBit diluents could complicate cleanup.

Over the last ten years, average cleanup cost of spilled crude oil has been about $2,000 per barrel; DilBit in the Kalamazoo has cost $29,000 per barrel, making it by far the most expensive spill in U.S. history—over $800 million so far. Much of the bitumen cannot be cleaned up without destroying the riverbed.

DilBit pipelines operate at elevated temperature and high pressure to reduce viscosity and increase piping efficiency—increasing the risk of corrosion for a product that, compared to crude oil, contains huge amounts of abrasive quartz particles. DilBit’s extreme acidity and sulfur content also weaken steel. 

Between 2002 and 2010, the Alberta hazardous-liquid pipeline system had twenty-five-times as many leaks and ruptures per mile than the U. S. system, mostly from internal corrosion.

TransCanada responded to the corrosion problem by seeking a safety waiver to use thinner-than-normal steel for Keystone XL.

What little research done regarding DilBit has been conducted by industry, so it’s proprietary. That’s right, the old “trade secrets” suppression of information helping to keep government regulating DilBit as crude oil.

Defective Steel

Pipeline construction saw a major boom from 2007 to 2009. The Pipeline and Hazardous Materials Safety Administration (PHMSA) inspection of seven pipelines built during the boom revealed that five showed expansion anomalies indicating significant amounts of defective steel. Several mills had provided defective steel, but 88% of the pipe with expansion anomalies was traced to a manufacturer based in India: Welspun Power and Steel.

Welspun provided 47% of the steel for Keystone 1.

TransCanada confirmed on February 2, 2012, that they will not be using any steel from India to build Keystone XL.

 
See more stories tagged with: