Tag Archives: Volatile gases

Crude Oil on Derailed Train Contained High Level of Gas

Repost from The Wall Street Journal
[Editor: This is a MUST READ.  Highly significant findings, with life-and-death implications for all regulators, first responders, rail and oil industry workers and executives, and for every town and country along the rails.  – RS]

Crude on Derailed Train Contained High Level of Gas

Cargo would have violated new vapor-pressure cap that goes into effect in April

By Russell Gold, March 2, 2015 6:54 p.m. ET
crude_oil_train_derailment_Mt.CarbonWVa
The scene of a CSX crude-oil train burning after derailment in Mount Carbon, W. Va. Photo: Marcus Constantino/Reuters

The crude oil aboard the train that derailed and exploded two weeks ago in West Virginia contained so much combustible gas that it would have been barred from rail transport under safety regulations set to go into effect next month.

Tests performed on the oil before the train left North Dakota showed it contained a high level of volatile gases, according to a lab report reviewed by The Wall Street Journal. The oil’s vapor pressure, a measure of volatility, was 13.9 pounds per square inch, according to the Feb. 10 report by Intertek Group PLC.

That exceeds the limit of 13.7 psi that North Dakota is set to impose in April on oil moving by truck or rail from the Bakken Shale. Oil producers that don’t treat their crude to remove excess gas face fines and possible civil or criminal penalties, said Alison Ritter, a spokeswoman for the North Dakota Industrial Commission.

The state introduced new rules on shipping oil in December, after a series of accidents in which trains carrying crude from the Bakken erupted into fireballs after derailing. As the Journal has reported, oil from shale formations contains far more combustible gas than traditional crude oil, which has a vapor pressure of about 6 psi; gasoline has a maximum psi of about 13.5.

The company that shipped the oil,  Plains All American Pipeline LP, said it follows all regulations governing the shipping and testing of crude. “We believe our sampling and testing procedures and results are in compliance with applicable regulatory requirements,” said Plains spokesman Brad Leone.

New information about the West Virginia accident is likely to increase regulators’ focus on the makeup of oil being shipped by train. Federal emergency rules adopted last year imposed new safety requirements on railroad operators but not on energy companies.

“The type of product the train is transporting is also important,” said Sarah Feinberg, the acting head of the Federal Railroad Administration. “The reality is that we know this product is volatile and explosive.”

Ms. Feinberg has supported requiring the energy industry to strip out more gases from the crude oil before shipping it to make the cargo less dangerous, but such measures aren’t currently included in current or proposed federal rules.

In the wake of the West Virginia accident, members of Congress have called on the White House to expedite its review of pending safety rules developed by the U.S. Transportation Department. Timothy Butters, the acting administrator of the department’s Pipeline and Hazardous Materials Safety Administration, said the new regulations were being vetted as quickly as was practical, given what he called their complexity.

Some critics are calling for lower limits on the vapor pressure of oil moving by rail.

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The train that derailed in Mount Carbon, W.Va., in mid-February included 109 tanker cars loaded with about 70,000 barrels of Bakken crude. PHOTO: ASSOCIATED PRESS

The lower the vapor pressure, the less explosive the oil and “the less chance of it blowing up—that should be the common goal here,” said Daniel McCoy, the chief executive of Albany County, N.Y., which has become a transit hub for Bakken crude heading to East Coast refineries.

The train that exploded in West Virginia included 109 tanker cars loaded with about 70,000 barrels of crude. It traveled from Western North Dakota across Minnesota, Illinois and Ohio before derailing in Mount Carbon, W. Va. Nearly two dozen tanker cars full of crude oil were engulfed in flames, some exploding into enormous fireballs that towered over the small community and burned a house to the ground.

The cause of the derailment remains under investigation. State and federal officials have said the train was traveling well under speed limits imposed last year on trains carrying crude oil. The train was made up of relatively new tanker cars built to withstand accidents better than older models.

A couple hours after the derailment, CSX and Plains All American Pipeline turned over paperwork about the crude to first responders and state and federal investigators. The testing document was included; the Journal reviewed it after making an open-records request.

A spokesman for  CSX Corp. , the railroad that carried the oil at the time of the crash, said it had stepped up its inspections of the track along this route, a procedure that railroads voluntarily agreed to last year.

Related

“Documentation provided to CSX indicated that the shipments on the train that derailed were in compliance with regulations necessary for transportation,” said Gary Sease, a CSX spokesman. “We support additional measures to enhance the safety of oil shipments, and continue to work cooperatively with regulators, oil producers, tank car manufacturers and others to achieve ever higher safety performance.”

A spokesman for BNSF Railway Co., which hauled the crude oil from North Dakota to Illinois, where it was handed off to CSX, declined to comment on the derailment.

Intertek, the testing company, said it is abreast of the regulatory changes and “working closely with authorities and our clients to assure compliance.”

The U.S. Transportation Department is testing samples of crude that didn’t spill or burn and says it plans to compare its findings with the North Dakota test.

The fire burned for three and a half days. “If it is burning hard, you can’t put it out,” said Benny Filiaggi, the deputy chief of the Montgomery Fire Department, who responded to the West Virginia derailment. He said he received training from CSX about oil-train fires in October.

“We concentrated on evacuating everyone nearby before the first explosion,” Mr. Filiaggi said.

MINNESOTA PUBLIC RADIO: Seven things you need to know about oil-by-rail safety

Repost from Minnesota Public Radio (MPR)

7 things you need to know about oil-by-rail safety

By Emily Kaiser, Feb 26, 2015
Derailment in Mount Carbon, West Virginia
This aerial Feb. 17, 2015 file photo photo made available by the Office of the Governor of West Virginia shows a derailed train in Mount Carbon, West Virginia. Steven Wayne Rotsch | AP file

Last week’s oil train derailment in West Virginia launched a national conversation about the safety of shipping oil by rail. It’s a topic we’ve been hearing about over the past couple years, especially here in Minnesota, where Bakken oil crisscrosses the state’s rail lines in large volume.

It’s a complex topic combining federal policy with scientific questions. The Wall Street Journal’s Russell Gold has been following the issue closely and spoke to MPR News’ Tom Weber to explain what you need to know.

Here are 7 things you should know about oil transport by rail:

1. The most misunderstood part of crude oil transport by train: It’s very explosive.

“The kind of oil that’s being taken out of the ground in North Dakota and put into these tanker cars is a much lighter oil,” Gold said. “It is a very gassy oil; it has a lot of ethanes, and butanes and propanes dissolved in it. It really does explode and that’s really what’s causing the problems.”

When a set of tanker cars goes up in flames, it can cause 20-story-tall fireballs.

Footage from the West Virigina derailment last week:

2. The amount of crude oil carried by train has increased exponentially in less than a decade.

According to the American Association of Railroads, there were 9,500 rail cars carrying crude in 2008. Last year is was 400,000.

We’ve been moving small amounts of crude by rail for years, but it was one or two cars in long train, Gold said. Now we see 100 to 120 tanker cars all filled with crude oil. That’s 70,000 barrels of crude per train, he said.

3. Once the crude oil is extracted in North Dakota, it has to be transported to the country’s major refineries on the coasts.

Refineries are built to utilize the gases removed from the product. If it was stabilized near the extraction site, North Dakota would have to find a way to use or dispose of the ethane and propane gases that make the oil explosive.

4. Railroads have become “virtual pipelines” for oil.

From a Gold WSJ article:

While these virtual pipelines can be created in months, traditional pipelines have become increasingly difficult to install as environmental groups seek to block permits for new energy infrastructure.

“What we are seeing on rail is largely due to opposition to and uncertainty around building pipelines,” said Brigham McCown, who was the chief pipeline regulator under President George W. Bush . Pipelines, he adds, are far safer than trains.

5. Pipeline leaks and spills are environmental problems. Oil train derailments are public safety issues.

When you have a tank car that derails and starts losing it’s very gassy oil, it’s going to burst into fire rather than leak into waterways, Gold said.

6. If you live close to these rail lines, get in touch with local first responders.

Gold recommends checking with emergency responders nearby and ask if they are properly trained to handle a crude oil train derailment. Make sure your fire chief is in contact with the rail companies to know when major shipments come through your area. Push for decreasing train speed limits and increased track inspection.

7. Can we make the tanker cars safer? Gold gave us the latest:

MPR News Producer Brigitta Greene contributed to this report.

DOT: Gas vapor eyed as factor in West Virginia oil train fireball

Repost from Reuters

Gas vapor eyed as factor in West Virginia oil train fireball

By Patrick Rucker, Thu Feb 19, 2015 3:26pm EST

WASHINGTON (Reuters) – Federal investigators will examine whether pressurized gas played a role in the massive blast that followed the derailment of a train carrying crude oil through West Virginia this week, the U.S. Transportation Department said on Thursday.

Questioning the possible role of gas vapors in the West Virginia fire broadens the debate over how to ensure public safety at a time when drastically larger volumes of crude oil are being shipped by rail and roll through cities and towns.

At least two dozen oil tankers jumped a CSX Corp track about 30 miles south of the state capital, Charleston, on Monday, touching off a fireball that sent flames hundreds of feet into the sky.

The U.S. Transportation Department said it has an investigator at the site to take samples of crude once the wreckage stops burning.

“We will measure vapor pressure in the tank cars that derailed in West Virginia,” said department spokeswoman Suzanne Emmerling.

Some experts say the nature of the explosion, which saw a dense cloud of smoke and flame soaring upwards, could be explained by the presence of highly pressurized gas trapped in crude oil moving in the rail cars.

“Vapor pressure could be a factor,” said Andre Lemieux of the Canadian Crude Quality Technical Association, a trade group which is helping the Canadian government adopt crude oil quality tests.

The American Petroleum Institute, the leading voice for the oil industry, declined to comment on whether high vapor pressure might have played a role in West Virginia.

“What we need to do now is allow the accident investigators to do their jobs,” said Brian Straessle, a spokesman for the trade group.

In the past twelve months, API and the North Dakota Petroleum Council have argued that the dangers of vapor pressure are exaggerated, citing self-funded studies that indicate vapor pressure readings are safe.

The Transportation Department did not call for regulations governing the presence of gas vapors in a national oil train safety plan it drafted last summer and is now with the White House for review.

That plan would have oil trains fitted with advanced braking systems to prevent pileups and tougher shells akin to those carrying volatile propane gas on the tracks.

The question of whether gas vapors make oil shipments more prone to detonate has been kept on the margins of the U.S. debate over transporting oil by rail.

The oil train sector has thrived in recent years, pushed by a crude oil renaissance in North Dakota’s Bakken region.

(Reporting By Patrick Rucker; Ernest Scheyder contributed from Williston, North Dakota; editing by Andrew Hay)

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.