Tag Archives: Tar sands crude

CPC-1232, Crude By Rail, Derailment, Diluted bitumen (Dilbit), DOT-111, DOT-117, Fire, Flash point, Tar sands crude

RAILWAY AGE: Why tar sands train became a fireball – bitumen isn’t necessarily safer than Bakken

Repost from Railway Age
[Editor: Significant quote: “This blend of bitumen and petroleum-based diluents, known as “dilbit,” has a low flash point. Thus, the widespread belief that bitumen from Alberta’s northern oil sands is far safer to transport by rail than Bakken crude is, for all intents and purposes, dead wrong. This may be disruptive news for bitumen shippers, carriers, and regulators.”  – RS]

Why bitumen isn’t necessarily safer than Bakken

By  David Thomas, Contributing Editor, February 23, 2015 
Feb. 14, 2015 CN oil train derailment near Gogama, Ontario
Feb. 14, 2015 CN oil train derailment near Gogama, Ontario. CBC News/Dillon Daveikis

The chain reaction fireballs that attended the Feb. 16, 2015 derailment of a CSX unit oil train in populated West Virginia probably blinded observers to the significance of the concurrent derailment and explosions of a CN oil train in a remote and uninhabited area of northern Ontario. Most reports treated the two events as equals, given that both trains consisted of recently manufactured CPC-1232 tank cars loaded with crude oil.

CN’s Ontario conflagration is the more disturbing of the two mishaps: The railroad reported that its train was not carrying the extra-light Bakken crude that, in a series of high-energy derailments since 2013, has proved to be explosive. To the contrary, the CN train was laden with bitumen, the extra-heavy tarry substance extracted from Alberta’s oil sands. Bitumen, in its natural highly viscous form, is considered to be essentially inflammable by petrochemical experts and is rarely considered in safety evaluations of crude by rail.

So why did the bitumen ignite and explode in Ontario’s -40ºC (-40ºF) weather? The reason, based on research consulted by Railway Age, is that the diluent added to make bitumen flow into and out of tank cars makes the blended lading quite volatile.

This blend of bitumen and petroleum-based diluents, known as “dilbit,” has a low flash point. Thus, the widespread belief that bitumen from Alberta’s northern oil sands is far safer to transport by rail than Bakken crude is, for all intents and purposes, dead wrong. This may be disruptive news for bitumen shippers, carriers, and regulators.

The hope for Bakken crude is that it can be treated to remove benzene and other “light end” substances before loading, rendering it mildly flammable instead of highly explosive. The same is not true for dilbit, because the highly volatile diluents are added to the crude to make it less viscous. A safer procedure is to heat bitumen at origin before loading into a tank car and again at destination, prior to unloading. Some tank cars are equipped with internal steam coils for this purpose and are used in crude oil service, but a requirement for such heating elements is not included in the specifications proposed for a future DOT-117 tank car to replace both the DOT-111 and CPC-1232 cars now in CBR service.

According to “Properties of Dilbit and Conventional Crude Oils,” a February 2014 report by the Alberta Innovates consortium of industry, government, and university researchers, “[T]he flash point of fresh dilbit is initially lower than other oil types and is comparable to a diluent.” It says that dilbit will ignite upon exposure to an ignition source at -35ºC, compared to -9ºC for conventional light oil. The flash point of raw diluent is -35ºC or less. The flash point of undiluted bitumen is +151ºC, well above the +60ºC flammability threshold specified in current hazardous materials classification regulations.

The reason for the low flash point of dilbit is that ignitability is determined by a blend’s most volatile components, in this case, the diluent itself: “[T]he flash point is determined by the lowest-boil-point components (volatiles). Consequently, the flash point of the dilbit is governed by the 20%-30% volume diluent component . . . .”

The study defines flash point as “the temperature to which the fuel must be heated in order to produce an adequate fuel/air concentration to be ignited when exposed to an open flame. The flash point of the crude oil is used as an index of fire hazard in North America.”

Thus, flash point is the critical factor in determining whether a tank car breach will lead to its contents burning or exploding upon exposure to the pyrotechnics of a high-energy derailment.

Canada’s Transportation Safety Board can be expected to analyze the dilbit lading of CN’s Ontario accident, as it did the Bakken crude that exploded at Lac-Mégantic in 2013. TSB reported then that Bakken crude is more volatile than other varieties. Should TSB conclude that dilbit has a volatility similar to Bakken crude, as the Alberta research suggests, the hazmat classification of crude oil could be in question.

Bakken Crude, CPC-1232, Crude By Rail, Derailment, DOT-111, Ethanol, Explosion, Federal Regulation (U.S.), Massive increase in crude-by-rail, Rail accidents, Rail routing, Risk Assessment, Tank car design, Tank car retrofit, Tar sands crude, Train braking systems, US Department of Transportation

AP EXCLUSIVE: DOT predicts fuel-hauling trains will derail 10 times a year; cost $4 billion; 100’s killed

Repost from Associated Press News
[Editor: Download the July, 2014 Department of Transportation analysis here.  A word of caution: a reputable source writes, “On a closer inspection, PHMSA conceded that the numbers it used for the analysis are flawed and that the scenarios lined out in the AP story are assuming no new regulations are enacted.”  That said, my source also wrote, “We didn’t need a study to tell us there was a problem.”- RS]

AP Exclusive: Fuel-hauling trains could derail at 10 a year

By Matthew Brown and Josh Funk, Feb. 22, 2015 12:00 PM ET

BILLINGS, Mont. (AP) – The federal government predicts that trains hauling crude oil or ethanol will derail an average of 10 times a year over the next two decades, causing more than $4 billion in damage and possibly killing hundreds of people if an accident happens in a densely populated part of the U.S.

The projection comes from a previously unreported analysis by the Department of Transportation that reviewed the risks of moving vast quantities of both fuels across the nation and through major cities. The study completed last July took on new relevance this week after a train loaded with crude derailed in West Virginia, sparked a spectacular fire and forced the evacuation of hundreds of families.

Monday’s accident was the latest in a spate of fiery derailments, and senior federal officials said it drives home the need for stronger tank cars, more effective braking systems and other safety improvements.

“This underscores why we need to move as quickly as possible getting these regulations in place,” said Tim Butters, acting administrator for the Transportation Department’s Pipeline and Hazardous Materials Safety Administration.

The volume of flammable liquids transported by rail has risen dramatically over the last decade, driven mostly by the oil shale boom in North Dakota and Montana. This year, rails are expected to move nearly 900,000 car loads of oil and ethanol in tankers. Each can hold 30,000 gallons of fuel.

Based on past accident trends, anticipated shipping volumes and known ethanol and crude rail routes, the analysis predicted about 15 derailments in 2015, declining to about five a year by 2034.

The 207 total derailments over the two-decade period would cause $4.5 billion in damage, according to the analysis, which predicts 10 “higher consequence events” causing more extensive damage and potential fatalities.

If just one of those more severe accidents occurred in a high-population area, it could kill more than 200 people and cause roughly $6 billion in damage.

“Such an event is unlikely, but such damages could occur when a substantial number of people are harmed or a particularly vulnerable environmental area is affected,” the analysis concluded.

The two fuels travel through communities with an average population density of 283 people per square kilometer, according to the federal analysis. That means about 16 million Americans live within a half-kilometer of one of the lines.

Such proximity is equivalent to the zone of destruction left by a July 2013 oil train explosion that killed 47 people and leveled much of downtown Lac-Megantic, Quebec, the analysis said.

Damage at Lac-Megantic has been estimated at $1.2 billion or higher.

A spokesman for the Association of American Railroads said the group was aware of the Department of Transportation analysis but had no comment on its derailment projections.

“Our focus is to continue looking at ways to enhance the safe movement of rail transportation,” AAR spokesman Ed Greenberg said.

Both the railroad group and the Railway Supply Institute, which represents tank car owners and manufacturers, said federal officials had inflated damage estimates and exaggerated risk by assuming an accident even worse than Lac-Megantic, which was already an outlier because it involved a runaway train traveling 65 mph, far faster than others that had accidents.

To get to refineries on the East and West coasts and the Gulf of Mexico, oil shipments travel through more than 400 counties, including major metropolitan areas such as Philadelphia, Seattle, Chicago, Newark and dozens of other cities, according to routing information obtained by The Associated Press through public record requests filed with more than two dozen states.

Since 2006, the U.S. and Canada have seen at least 21 oil-train accidents and 33 ethanol train accidents involving a fire, derailment or significant amount of fuel spilled, according to federal accident records reviewed by the AP.

At least nine of the trains, including the CSX train that derailed in West Virginia, were hauling oil from the Northern Plains’ Bakken region that is known for being highly volatile. Of those, seven resulted in fires.

Both the West Virginia accident and a Jan. 14 oil train derailment and fire in Ontario involved recently built tank cars that were supposed to be an improvement to a decades-old model in wide use that has proven susceptible to spills, fires and explosions.

Safety officials are pushing to make the tanker-car fleet even stronger and confronting opposition from energy companies and other tank car owners.

Industry representatives say it could take a decade to retrofit and modify more than 50,000 tank cars, not the three years anticipated by federal officials, who assumed many cars would be put to new use hauling less-volatile Canadian tar-sands oil.

The rail industry’s overall safety record steadily improved over the past decade, dropping from more than 3,000 accidents annually to fewer than 2,000 in 2013, the most recent year available, according to the Federal Railroad Administration.

But the historical record masks a spike in crude and ethanol accidents over the same time frame. Federal officials also say the sheer volume of ethanol and crude that is being transported – often in trains more than a mile long – sets the two fuels apart.

Most of the proposed rules that regulators are expected to release this spring are designed to prevent a spill, rupture or other failure during a derailment. But they will not affect the likelihood of a crash, said Allan Zarembski, who leads the railroad engineering and safety program at the University of Delaware.

Derailments can happen in many ways. A rail can break underneath a train. An axle can fail. A vehicle can block a crossing. Having a better tank car will not change that, but it should reduce the odds of a tank car leaking or rupturing, he said.

Railroads last year voluntarily agreed to reduce oil train speeds to 40 mph in urban areas. Regulators said they are considering lowering the speed limit to 30 mph for trains not equipped with advanced braking systems. Oil and rail industries say it could cost $21 billion to develop and install the brakes, with minimal benefits.

CPC-1232, Diluted bitumen (Dilbit), DOT-111, Phillips 66, Tar sands crude

SANTA BARBARA INDEPENDENT: Oil Train Roulette

Repost from The Santa Barbara Independent

Oil Train Roulette

Oppose Bringing Dangerous Cargo Through

By Arlo Bender-Simon, February 22, 2015

Russian roulette is a dangerous game of chance. A bullet is placed into a revolver, and the chamber is revolved. You’ve got a one in six chance that when you pull the trigger a bullet will come out. Be careful where you point that thing!

Allowing oil trains to pass through a community is like playing a game of Russian roulette. Granted, your chances are exponentially better than 1 in 6, but if a disaster were to happen, it would not be just you who gets hurt.

Right now, Phillips 66 (an oil refining company that recently spun off from ConocoPhillips) would like to be allowed to expand its refinery in Nipomo so that it can process shipments of crude oil delivered by trains. The tar sands crude is thick and shipped as “diluted bitumen” — in other words, with chemicals added to make it more fluid and easier to transport. A highly flammable byproduct even remains in the tank cars after they’ve been emptied.

Nipomo is in San Luis Obispo County, so our local officials can do little about this. But they can do something! They can join officials up and down the train route and pass a resolution, or send a letter, in opposition. This has been done by Ventura County, and the cities of Oxnard, Moorpark, Camarillo, Simi Valley, San Jose, Oakland, Sacramento, and many others.

This refinery may be in a neighboring county, but this is a big deal for Santa Barbara. Trains will be allowed to arrive at this refinery on the coast from either the north or the south. If this project is approved, oil trains will be passing through Santa Barbara County.

The proposal from Phillips 66 would allow 260 mile-and-a-half-long trains to offload crude oil at the Nipomo refinery every year. This translates to 520 trips up and down the California coast by crude-carrying trains that will shut down intersections, blare their horns, rumble through our communities, and spew gaseous contamination into the air. The inconvenience, air deficits, and upset are nothing compared to the real threats the loads pose to the health of our communities.

The Phillips 66 tanker fleet is composed entirely of model DOT-111 tanker cars. In July 2014, the US Department of Transportation decided that DOT-111s are extremely failure prone and outmoded; the newer, thicker-walled DOT-117 is recommended. Unfortunately, even the train-car builders warn no amount of extra metal or engineering can protect against breakage during a high-speed derailment.

The reality of oil train derailments is horrifying. With the jump in crude produced by fracking, the shipment of crude oil by rail has also jumped by thousands of percent. Unsurprisingly, the number of oil train derailments has also accelerated rapidly. So much so that in 2014, more crude oil was spilled in the U.S. from train derailments than in any year since data has been collected.

In just the past week there have been two major oil train accidents in North America. A train derailed in Ontario, Canada — pretty much directly north of Ohio — the night of February 14. Several tank cars caught fire, and the remote location made it difficult for emergency teams to arrive.

Two days later, midday on February 16, another train pulling DOT-111 cars derailed, exploded [Editor: no, they were the “improved” CPC-1232 tank cars], and leaked oil into the Kanawha River amid a snowstorm in West Virginia. At the time of this writing, roughly 15 tanker cars were still burning, hundreds of families have been evacuated from their homes, and two water treatment plants downriver from the spill have been shut down.

The question you have to ask the San Luis Obispo Planning Commission and the Board of Supervisors is this: If an oil train explosion is not currently a serious possibility in our part of North America, why would we do something to change that?

CN Rail, Crude By Rail, Derailment, Diluted bitumen (Dilbit), Fire, Oil spill, Soil contamination, Tar sands crude, Tribal lands, Water quality

Ontario derailment: tar-sands crude (diluted bitumen), more pictures

Repost from  CBC News
[Editor: New details: carrying tar-sands dilbit; 15 cars released crude oil and seven caught fire; responders letting it burn itself out; oil pooling at the frozen headwaters of a small creek; nearby Mattagami First Nation concerned; expect all trees in the surrounding area to be coated with toxins, some die-off; soil contamination a long range cleanup.  – RS] 

Gogama oil spill raises concerns about environmental damage

Cleanup continues at the site of a CN train derailment about 30 km northwest of Gogama, Ont.

CBC News, Feb 18, 2015 9:27 AM ET, Updated: Feb 18, 2015 11:57 AM ET
Gogama_derailment_CBC
Derailed tank cars, Gogama, Ontario. (Transportation Safety Board)

While investigators continue to search for the cause of a CN train Saturday near Gogama, Ont., the environmental impact is becoming more apparent.

Black charred oil tankers lie on their sides in snow stained by crude oil.

CN said the derailed train was carrying diluted bitumen from Alberta to eastern Canada.

Laurentian University professor Charles Ramcharan says that’s one of the worst things that can be spilled.

“The trouble is that it’s very toxic, so if you have a spill it causes a lot of damage and because the bitumen is a solid, it stays on the landscape for a very long time.”

The nearby Mattagami First Nation is also concerned.

Oil is pooling at the frozen headwaters of a small creek near the site of the derailment.

Councillor Jennifer Constant said that waterway leads to her community.

“The impacts may be not immediate, but what are the long-term aspects going to be for people who do utilize the lake and go hunting in the area? They’ve used these lands for time immemorial and they’re worried about the impacts of that,” she said.

“Their health or practices have the potential to be affected by this.”

Contamination, die-off

While CN works with partners to clean up the spill, Ramachran said he worries the incident could fall off the radar because of its remote location.

“Just because there are no immediate human health concerns, I do worry that this one will kind of fall off the radar.”

CN says crews are letting a controlled fire burn out at the site.

Once the dillutants burn off, tar will be left to remove, Ramcharan noted.

He predicted all trees in the surrounding area will be coated with toxins, leading to some die-off. He said the soil will be contaminated as well.

A total of 15 cars released crude oil and seven caught fire when the train went off the tracks late Saturday night.

The Transportation Safety Board is investigating a section of broken rail containing a rail joint and a broken wheel.

The director with Transport Action Ontario, an organization that advocates for transportation improvements, said some kind of mechanical failure might be to blame.

“It’s hard to tell,” Dan Hammond said.

“You know, I would like the investigation to take its course on this one. But things like broken wheels, the industry does not like to see.”

CN said both the train and the track passed safety inspections shortly before the derailment.