Category Archives: Volatile gases

Bakken Crude, Crude By Rail, Derailment, Explosion, Oil Industry, Oil stabilization, Rail Safety, Tank car design, Volatile gases

Oil industry perspective: Oil trains’ No. 1 safety threat is derailments

Repost from The Grand Forks Herald
[Editor:  Author Mark Green is employed by the American Petroleum Institute, which represents America’s oil and natural gas industry.  Read on for an interesting – and highly biased – insider perspective on crude by rail.  A letter defending the railroad industry, written by an AAR spokesperson appeared in the Herald on April 9.  – RS]

Oil trains’ No. 1 safety threat: Derailments

By Mark Green, Apr 5, 2015 at 4:45 a.m.

WASHINGTON — Amid the continuing public discussion over improving the safety of crude oil delivered by rail, it’s important that everyone — the energy industry, railroads, regulators, policymakers — stay focused on the facts and the science.

This is key to making meaningful improvements to freight rail transportation — which already delivers 99.998 percent of materials such as crude oil without incident. We say meaningful improvements because, as with everything we do, the oil and natural gas industry’s safety goal is zero incidents.

First, the science. A new Energy Department report found no data showing correlation between crude oil properties and the likelihood or severity of a fire caused by a train derailment. Also from the report:

“No single parameter defines the degree of flammability of a fuel; rather, multiple parameters are relevant. While a fuel with a lower flashpoint, wider range of flammability limits, lower auto-ignition temperature, lower minimum ignition energy and higher maximum burning velocity is generally considered more flammable, the energy generated from an accident has the potential to greatly exceed the flammability impact of these and any other crude oil property based criteria.”

That last point highlights the importance of preventing derailments in the first place — because, according to the report, the kinetic energy created by a derailment can play a bigger role in the size of a fire than the commodity the train is hauling.

The department’s findings on crude oil properties also are consistent with a Federal Railroad Administration report from last fall, which compared crude oil with denatured alcohol, another hazardous liquid transported by rail. The report cautioned against zeroing in on a single measurement in the quest for safety improvement:

“The data suggests that denatured alcohol may pose a greater risk of explosion than crude oil,” it declared.

“As such, using vapor pressure as a metric to identify potential hazards may not prove effective when considering real-world accident conditions involving tank cars loaded with flammable liquids.”

The facts on volatility are important because some believe that a single safety measure — a tank car design — will address rail transport safety. As then-PHMSA Administrator Cynthia Quarterman said last year, “Getting a new tank car is not a silver bullet; first we need to prevent derailments.”

The oil and natural gas industry has been leading the way for a comprehensive, holistic approach that includes three main thrusts: prevention, mitigation and response. On prevention, in addition to Quarterman, others agree — including the Brotherhood of Maintenance of Way Employees and the Railway Supply Institute, whose members build and own the majority of U.S. tank cars.

“The focus on accident prevention must forever remain the priority,” wrote Thomas Simpson, president of the Railway Supply Institute, in a Wall Street Journal letter to the editor:

“Forensic data from rail accidents shows that the forces involved are such that in many events, even the most aggressive of proposed new tank-car designs wouldn’t have totally eliminated the risk of a commodity release. Reductions in derailment frequency and severity are required to ensure that the billions of dollars to be spent on upgraded tank cars aren’t wasted. Shippers and rail-equipment suppliers don’t control the infrastructure or operating procedures used in transportation.

“An exclusive focus on tank-car design would represent a missed opportunity for real, fundamental safety improvements.

API President and CEO Jack Gerard underscored the need for a broad rail safety approach during a conference call with reporters that discussed a new first responders education course, developed jointly by the oil and natural gas and railroad industries:

“This is not a goal that can be reached through any single action or step,” he said. “Eliminating the last elements of risk requires a holistic and science-based approach to better prevent, mitigate and respond to derailments of trains carrying crude oil.”

First-responder training, which will be taught for the first time this weekend at a firefighters’ conference in Nebraska by instructors from BNSF and at the annual conference for short line railroads in Florida, is an example of industry advancing safety and preparedness, Gerard said. Industry has been and will remain engaged:

“I think our industry is very much engaged in this process,” he said.

“We’re leaders in improving in safety. We’re committed to safety, with zero incidents (as the goal).”

Bakken Crude, Crude By Rail, Derailment, Explosion, Federal Regulation (U.S.), Fire, Light ends, North Dakota, Oil conditioning, State regulation, Volatile gases

New vapor pressure rule in North Dakota fails to account for additional explosion risks

Repost from Reuters
[Editor:  Reference below is to an important new Energy Department study on the volatility of Bakken crude.  – RS]

North Dakota’s new oil train safety checks seen missing risks

By Patrick Rucker, Mar 31, 2015 4:14pm EDT

WASHINGTON, March 31 (Reuters) – New regulations to cap vapor pressure of North Dakota crude fail to account for how it behaves in transit, according to industry experts, raising doubts about whether the state’s much-anticipated rules will make oil train shipments safer.

High vapor pressure has been identified as a possible factor in the fireball explosions witnessed after oil train derailments in Illinois and West Virginia in recent weeks.

For over a year, federal officials have warned that crude from North Dakota’s Bakken shale oilfields contains a cocktail of explosive gas – known in the industry as ‘light ends.’

The new rules, which take effect on April 1, aim to contain dangers by spot-checking the vapor pressure of crude before loading and capping it at 13.7 pounds per square inch (psi) – about normal atmospheric conditions.

The plan relies on a widely-used test for measuring pressure at the wellhead, but safety experts say gas levels can climb inside the nearly-full tankers, so the checks are a poor indicator of explosion risks for rail shipments.

It is “well-understood, basic physics” that crude oil will exert more pressure in a full container than in the test conditions North Dakota will use, said Dennis Sutton, executive director of the Crude Oil Quality Association, which studies how to safely handle fossil fuels.

Ametek Inc, a leading manufacturer of testing equipment, has detected vapor pressure climbing from about 9 psi to over 30 psi – more than twice the new limit – while an oil tank is filled to near-capacity.

About 70 percent of the roughly 1.2 million barrels of oil produced in North Dakota every day moves by rail to distant refineries and passes through hundreds of cities and towns along the way.

The state controls matter to those communities because there is no federal standard to curb explosive gases in oil trains.

North Dakota officials point out that the pressure limit is more stringent than the industry-accepted definition of “stable” crude oil. They also say that they lack jurisdiction over tank cars leaving the state and that the pressure tests are just one of the measures to make oil trains safer.

“We’re trying to achieve a set of operating practices that generates a safe, reliable crude oil,” Lynn Helms, director of the North Dakota Department of Mineral Resources, has said. Helms has also said that test readings for near-full containers were less reliable.

However, given different testing and transport conditions, industry officials say the pressure threshold may need to be lowered to reduce the risks.

Limiting vapor pressure to 13.7 psi in transit would require an operator to bring it to “something well below that” at the loading point, Sutton said.

The uncertainty about regulatory reach and safety has spurred calls for the White House to develop national standards to control explosive gas pressure.

“Let me be really clear,” Democratic Senator Maria Cantwell of Washington state told reporters last week. “They should set a standard on volatility.”

The National Transportation Safety Board, an independent safety agency, has already encouraged a federal standard for “setting vapor pressure thresholds” for oil trains citing Canadian findings linking such pressure and the size of explosions in train accidents.

Meanwhile, a leading voice for the oil industry is lobbying Congress to resist federal vapor pressure benchmarks.

Last week, the American Petroleum Institute urged lawmakers to oppose “a national volatility standard” and pointed to an Energy Department study that the severity of an oil train mishap may have more to do with the circumstances of the crash than the volatility of the cargo.

That same report said much more study was needed to understand volatility of crude oil from the Bakken. (For a link to the study: tinyurl.com/nvjqmxt)

The oil industry has said that wringing ‘light ends’ out of Bakken crude may keep a share of valuable fuel from reaching refineries.

Reuters reported early this month that Transportation Secretary Anthony Foxx took his concerns about Bakken oil volatility to the White House last summer and sought advice on what to do about the danger of explosive gases.

The administration decided that rather than assert federal authority it would allow the North Dakota rules to take root, according to sources familiar with the meeting.

(Reporting By Patrick Rucker; Additional reporting by Ernest Scheyder in North Dakota; Editing by Tomasz Janowski, Bernard Orr)
Bakken Crude, CPC-1232, Crude By Rail, Derailment, DOT-111, Explosion, Federal Regulation (U.S.), Oil conditioning, Oil stabilization, Tank car design, Tank car retrofit, Volatile gases

MN Public Radio: Critics press industry to make Bakken oil safer

Repost from Minnesota Public Radio, MPR.org/100.5 FM

Critics press industry to make Bakken oil safer

By Dan Gunderson, Mar 29, 2015 at 6:37 p.m.
WillistonND_AndrewBurtonGetty500
Oil containers sat at a train depot outside Williston, North Dakota. Andrew Burton | Getty Images 2013

MPR_Gunderson_Bakken_audio
MOORHEAD, Minn. — North Dakota environmentalists want oil companies to reduce volatile gasses in Bakken crude. Regulators, however, say they’re taking a different tack that’s cheaper for the industry and still improves safety.

The gasses remain a flashpoint for producers, environmental and safety groups concerned about transporting the highly flammable Bakken crude. Oil train shipments from the Bakken have skyrocketed in recent years, heightening the worries.

Environmental groups have been pushing the state to require that producers install equipment to stabilize the crude using a process that heats the oil to a higher temperature to release more gasses.

North Dakota officials, however, say the more stringent heating requirement would cost oil companies as much as $2 per barrel.

Instead, state inspectors starting April 1 will check oil at well sites to make sure the vapor pressure runs no greater than 13.7 pounds per square inch of Reid Vapor Pressure, the measurement standard of volatile gases in crude oil. Oil involved in a recent West Virginia derailment and explosion had a vapor pressure slightly higher, 13.9 psi.

The North Dakota standard is tougher than the 14.7 psi federal standard for crude oil, although it’s still more volatile than gasoline sold in Minnesota in the summer, which has a maximum vapor pressure of 9.

Regulators say their method will maintain safety but cost an estimated 10 cents a barrel, compared to the $2 per barrel for the stabilization gas removal process. Companies found violating the new regulation can be fined $12,500 per day.

The industry disputes that Bakken crude is more volatile, but says most North Dakota crude meets the new standard already.

“I think a lot of people have wondered, well, is this going to cure the problem. And our answer is that by itself, it is not the cure,” said Lynn Helms, director of North Dakota’s Department of Mineral Resources.

The new, lower vapor standard is a step in the right direction but safer rail cars are also a critical part of the solution, Helms added. The federal government is considering new rules for safer tank cars that might include thicker steel shells and larger pressure relief valves.

“If you combine our lower vapor pressure standard with the these high capacity relief valves we should be able to get away from these boiling liquid explosive vapor incidents which create the large explosions if and when we have a derailment,” Helms added.

Larger relief valves could allow rapidly expanding gases to escape, preventing rail tank cars from exploding. But critics point out those volatile gases could still catch fire. A newer tank car with improved safety features, the CPC 1232, has been involved in at least two recent oil train derailment and explosion incidents.

Environmentalists argue North Dakota could make the oil much safer.

“The bottom line profitability of the oil industry is trumping all the rest of us, our safety,” said Don Morrison with the North Dakota environmental group Dakota Resource Council.

Much of the light crude oil in Texas is stabilized before it’s shipped, he added. “To stabilize the oil so it is safer like they do in Texas, oil companies are going to have to spend some money. That is true. But isn’t that the cost of doing business?”

The North Dakota Petroleum Council, which represents the oil industry, did not respond to an interview request.

In December 2013, the potential for disaster became very real after train cars of Bakken oil derailed, caught fire and exploded outside Casselton, N.D., near the Minnesota state line. Derailments and fires involving Bakken crude since then have heightened the worry.

Fred Millar, a Washington-based lobbyist and consultant on hazardous materials transportation, contends the new North Dakota standards would not have changed the outcome of a deadly 2013 oil train explosion in Lac Megantic, Quebec in Canada.

Train cars of Bakken crude involved in the Lac Megantic explosion and fire had a vapor pressure of about 9 psi, according to Canadian investigators.

A search of public records and news reports identified 14 derailments involving crude oil trains in the past two years in North America. Fire was involved in nine of the accidents.

New regulations are unlikely to stop crude oil train accidents, Millar said.

“Anybody who’s kind of hoping that somehow there’s going to be this magic bullet or some new set of federal regulations that’s going to make this situation safe,” he said, “I have bridge in Brooklyn I’d like to sell you.”

Bakken Crude, Derailment, Diluted bitumen (Dilbit), Emergency Readiness & Response, Evacuation zone, Explosion, Federal Regulation (U.S.), Fire, Massive increase in crude-by-rail, Moratorium, Rivers, Tar sands crude, Volatile gases, Wildlife

Fourth Oil Train Accident in Three Weeks Shows Need for Immediate Moratorium

Repost from The Center for Biological Diversity

Another Oil Train Derails and Catches Fire in Ontario

Fourth Oil Train Accident in Three Weeks Shows Need for Immediate Moratorium

Center for Biological DiversityGOGAMA, Ont.— An oil train derailed and caught fire early this morning in Ontario near the town of Gogama, the second such incident in Ontario in three weeks, and the fourth oil train wreck in North America in the same time period. Since Feb. 14, there have also been fiery oil train derailments in West Virginia and Illinois. The Illinois wreck occurred just two days ago, and the fire from that incident is still burning.

“Before one more derailment, fire, oil spill and one more life lost, we need a moratorium on oil trains and we need it now” said Mollie Matteson, a senior scientist with the Center for Biological Diversity. “The oil and railroad industries are playing Russian roulette with people’s lives and our environment, and the Obama administration needs to put a stop to it.”

In the United States, some 25 million people live within the one-mile “evacuation zone” of tracks carrying oil trains. In July 2013, a fiery oil train derailment in Quebec resulted in the loss of 47 lives and more than a million gallons of oil spilled into a nearby lake. A report recently released by the Center for Biological Diversity also found that oil trains threaten vital wildlife habitat; oil trains pass through 34 wildlife refuges and critical habitat for 57 endangered species.

Today’s Ontario accident joins an ever-growing list of devastating oil train derailments over the past two years. Oil transport has increased from virtually nothing in 2008 to more than 500,000 rail cars. Billions of gallons of oil pass through towns and cities ill-equipped to respond to the kinds of explosions and spills that have been occurring. Millions of gallons of crude oil have been spilled into waterways. In 2014, a record number of spills from oil trains occurred.

There has been a more than 40-fold increase in crude oil transport by rail since 2008, but no significant upgrade in federal safety requirements. The oil and rail industries have lobbied strongly against new safety regulations that would help lessen the danger of mile-long trains carrying highly flammable crude oils to refineries and ports around the continent. The Obama administration recently delayed for several months the approval of proposed safety rules for oil trains. The proposed rules fall short because they fail to require appropriate speed limitations, and it will be at least another two and a half years before the most dangerous tank cars are phased out of use for the most hazardous cargos. The oil and railroad industries have lobbied for weaker rules on tank car safety and brake requirements.

The administration also declined to set national regulations on the level of volatile gases in crude oil transported by rail, instead deciding to leave that regulation to the state of North Dakota, where most of the so-called “Bakken” crude originates. Bakken crude oil has been shown to have extremely high levels of volatile components such as propane and butane but the oil industry has balked at stripping out these components because the process is expensive and these “light ends” in the oil bring a greater profit. The North Dakota rules, which go into effect next month, set the level of volatile gases allowed in Bakken crude at a higher level than was found in the crude that set the town of Lac Mégantic, Quebec on fire in 2013, or that blew up in the derailment that occurred last month in West Virginia.

The crude involved in today’s accident may be another form of flammable crude, called diluted bitumen, originating in Alberta’s tar sands region. The Feb. 14 derailment and fire in Ontario on the same rail line involved an oil train hauling bitumen, otherwise known as tar sands.

“Today we have another oil train wreck in Canada, while the derailed oil train in Illinois is still smoldering. Where’s it going to happen next? Chicago? Seattle?” said Matteson. “The Obama administration has the power to put an end to this madness and it needs to act now because quite literally, people’s lives are on the line.”

In addition to its report on oil trains, the Center has sued for updated oil spill response plans, petitioned for oil trains that include far fewer tank cars and for comprehensive oil spill response plans for railroads as well as other important federal reforms, and is also pushing to stop the expansion of projects that will facilitate further increases in crude by rail.

The Center for Biological Diversity is a national, nonprofit conservation organization with more than 825,000 members and online activists dedicated to the protection of endangered species and wild places.