Bakken Crude, DOT-111, Fracking, Oil conditioning, Oil producers, Oil stabilization, State regulation, Tank car retirement, Train braking systems, Train speed, Volatile gases

Maclean’s: So it turns out Bakken oil is explosive after all

Repost from Maclean’s Magazine

So it turns out Bakken oil is explosive after all

Producers in North Dakota’s Bakken oil fields have been told to make crude is safer before being shipped by rail
By Chris Sorensen, December 10, 2014

Oil TrainsAfter years of insisting oil sucked from North Dakota’s Bakken shale wasn’t inherently dangerous, producers have been ordered to purge the light, sweet crude of highly flammable substances before loading it on railcars and shipping it through towns and cities across the continent.

State regulators said this week that the region’s crude will first need to be treated, using heat or pressure, to remove more volatile liquids and gases. The idea, according to North Dakota’s Mineral Resources Director Lynn Helms, wasn’t to render the oil incapable of being ignited, but merely more stable in preparation for transport.

It’s the latest regulatory response to a frightening series of fiery train crashes that stretches back to the summer of 2013. That’s when a runaway train laden with Bakken crude jumped the tracks in Lac-Mégantic, Que., and killed 47 people in a giant fireball. In the accident’s immediate aftermath, many experts struggled to understand how a train full of crude oil could ignite so quickly and violently. It had never happened before.

Subsequent studies have shown that Bakken crude, squeezed from shale rock under high pressure through a process known as hydraulic fracturing, or “fracking,” can indeed have a high gas content and vapour pressure, as well as lower flash and boiling points. However, there remains disagreement about whether the levels are unusual for oil extracted from shale, and whether the classifications for shipping it should be changed.

Still, with more than one million barrels of oil being moved by rail from the region each day, regulators have decided to err on the side of caution and implement additional safety measures. For producers, that means buying new equipment that can boil off propane, butane and other volatile natural gases. Under the new rules, the Bakken crude will not be allowed to have a vapour pressure greater than 13.7 lb. per square inch, about the same as for standard automobile gasoline. Regulators estimate that about 80 per cent of Bakken oil already meets these requirements.

The industry isn’t pleased. It continues to argue that Bakken oil is no more dangerous than other forms of light, sweet crude, and is, therefore, being unfairly singled out. It has also warned that removing volatile liquids and gasses from Bakken crude would result in the creation of a highly concentrated, highly volatile product that would still have to be shipped by rail—not to mention additional greenhouse-gas emissions. It goes without saying that meeting the new rules will also cost producers money—at a time when oil prices are falling.

In the meantime, regulators on both sides of the border are taking steps to boost rail safety by focusing on lower speed limits, new brake requirements and plans to phase out older, puncture-prone oil tank cars. Earlier this year, Transport Minister Lisa Raitt said Canada would be “leading the continent” on the phase-out of older DOT-111 tank cars, which have been linked to fiery crashes going back 25 years. There are about 65,000 of the cars in service in North America, about a third of which can be found in Canada.

Derailment, Double shelf couplers, Rail accidents

Collision and derailment in Missoula rail yard – ‘double shelf couplers’ helpful?

Repost from The Missoulian
[Editor: Significant quote: “the cars were rigged with double shelf couplers designed to prevent individual cars from detaching and potentially causing punctures.  ‘This safety feature of the tank cars worked properly, resulting in all 30 cars rolling on their side(s), as designed,’ Lewis said in a written statement.”
Here is more about double shelf couplers.  And note p. 23 of a 2010 Transport Canada study which found that “Double shelf couplers also have disadvantages: sometimes string of ’empty’ tank cars derail.”  – RS]

Montana Rail Link: Trains collide, tank cars derail in Missoula

By Kim Briggeman, December 16, 2014
derailement in Missoula
The first of 30 derailed tank cars in the Missoula rail yard is put back on the tracks Tuesday morning by a Montana Rail Link crew. The stationary tank cars were rerailed after being hit by a loaded car at low speed. Michael Gallacher

An early Tuesday morning train collision in the Missoula rail yard resulted in the derailment of 30 empty tank cars but no injuries or spills.

Montana Rail Link officials said the accident occurred about 4 a.m. when a rail car loaded with company scrap metal made low-speed contact with a stationary empty tank car coupled to 29 others.

MRL spokesman Jim Lewis said the cars were rigged with double shelf couplers designed to prevent individual cars from detaching and potentially causing punctures.

“This safety feature of the tank cars worked properly, resulting in all 30 cars rolling on their side(s), as designed,” Lewis said in a written statement.

Lewis said there was minimal equipment damage. The loaded car did not derail and was moved from the site.

Crews with heavy equipment started putting the tank cars back on track before noon and worked until 8 p.m. They’ll resume Wednesday morning, Lewis said.

Mainline service was not interrupted, and the cause of the incident is under investigation.

MRL has released no further word on its investigation into a collision east of Missoula near the mouth of the Blackfoot River on Nov. 13. That crash resulted in the derailment of three locomotives and 10 empty grain cars.

Both engineers in one locomotive were hospitalized and released. The shells of the grain cars remain along the tracks by a trestle below the former Milltown Dam as salvage work continues.

Derailment, Rail accidents, Track geometry

Derailment not human error: report cites ‘track geometry’ issues

Repost from The Missoulian

MRL report cites ‘track geometry’ issues in July derailment of Boeing fuselages

By Kim Briggeman, November 6, 2014
110614-mis-nws-boeing-derailment
A raft floats by Boeing 737 fuselages on the Clark Fork River during recovery efforts in July. TOM BAUER, Missoulian

Montana Rail Link has ruled out human error as the cause of a July 3 train derailment that destroyed six Seattle area-bound Boeing 737 fuselages along the Clark Fork River in Mineral County.

Simulations performed by a contractor hired by MRL were inconclusive, but company spokesman Jim Lewis said Wednesday they “suggest a track geometry issue.”

Railroads are required to conduct an investigation after derailments and file their findings with the Federal Railroad Administration.

An FRA spokesman said Wednesday the agency’s own investigation of the July wreck is ongoing and could take anywhere from two months to a year. The report by the railroad company is used as “another piece of evidence,” Mike Booth said.

The 19-car derailment occurred in a remote stretch a mile above the mouth of Fish Creek on the south bank of the Clark Fork River. The ruined fuselages were shipped a few miles downstream to a landing at Rivulet, where they were scrapped out later in July.

The initial investigation by Montana Rail Link, the Missoula-based railroad operated by industrialist Dennis Washington’s Washington Cos., found no evidence of operator error either on the train or in the loading or stacking of the train cars.

The fuselages themselves were shipped from Wichita, Kansas, where they’re fabricated by Spirit AeroSystems.

Safety and accident prevention have always been a top priority of Montana Rail Link, Lewis said.

“We have numerous employee safety programs, as well as rigorous track inspection policies,” he said. “In addition, we invest millions of dollars in track maintenance annually to operate the safest railroad possible.”

Boeing continues to use the Wichita company as its sole supplier of fuselages, sending the blue-green plane shells more than 1,500 miles to Renton, Washington. Almost half the route follows BNSF and MRL tracks in southern Montana.

Parts of Boeing 777 and 747 hulls were also involved in the wreck but were undamaged. They were sent on their way to a separate plant in Everett, Washington.

The smaller 737s are in unprecedented demand. Two assembly lines in Renton each completes a 737 roughly every working day, a total of 42 a month. Boeing has announced it will open another line next year in the same plant to build the 737 Max, upping the total capacity to 60 a month.

Air Quality, Bay Area Air Quality Management District, Bay Area Refineries

Bay Area Air Quality Management District approves plan to cut pollution at oil refineries

Repost from The Contra Costa Times

Bay Area Air Quality Management District approves plan to cut pollution at oil refineries

By Denis Cuff , 12/18/2014

SAN FRANCISCO — Regional air pollution regulators on Wednesday approved a far-reaching blueprint to cut Bay Area oil refinery emissions by 20 percent.

Under the plan, the Bay Area Air Quality Management District board will consider a package of air pollution rules in 2015 to reduce emissions from five refineries.

More rigorous monitoring of refinery emissions will be required. To assure continued clean air improvements, refiners will be required periodically to assess their pollution and ways to reduce it.

“This strategy will ensure that refineries are taking the strongest steps to cut emissions and minimize their impacts on neighboring residents and the region as a whole,” Jack Broadbent, the air district’s executive officer, said.

The plan was approved unanimously by the air board, which regulates pollution in nine counties.

The five Bay Area refineries are Chevron, Shell, Valero, Phillips 66 and Tesoro.