Ignited Sask. crude oil train was using new puncture-resistant tank cars endorsed by feds

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The Canadian Pacific Railway train that derailed, leaked crude oil and ignited a large fire in rural Saskatchewan Thursday was using new, industry-standard tank cars meant to be more puncture-resistant than their predecessors, the ones that exploded in Lac-Mégantic, Que.

“The cars were TC-117J cars, which meet all Transport Canada standards,” a CP spokesperson confirmed Friday.

ConocoPhillips, which owns the diluted bitumen on board Thursday’s CP train, also confirmed the train was using the new tank type endorsed by Canadian regulators in 2016.

“The 117Js are newly-built,” a ConocoPhillips spokesperson said. “[They] meet or exceed the standard required for crude transportation.” 

Footage from Thursday’s crash site, west of the small hamlet of Guernsey, Sask., shows large puddles of black sludge staining the prairie ground next to the train track paralleling Saskatchewan’s Highway 16. 

The Transportation Safety Board of Canada (TSB) is investigating the early-morning incident but has not yet released an estimate of the amount of oil spilled. Nobody was injured and there was no impact to waterways, according to CP Rail. 

By 9 p.m. CST Friday — more than 36 hours after the train jumped the tracks — the fires were contained and the rail line’s Sutherland subdivision was reopened to traffic. 

According to CP, 32 of the train’s tank cars had derailed.

Smoke billows up from a derailed Canadian Pacific Railway train near Guernsey, Sask., on Thursday, February 6, 2020. THE CANADIAN PRESS/Matt Smith (THE CANADIAN PRESS)

That’s just one car short of the 33 that derailed in a separate CP-Conoco crude oil train derailment, in early December, on the other side of Guernsey. 

Approximately 1.5 million litres of oil leaked out of the train’s tanks in that incident. That’s more than six times the amount of product that poured into the North Saskatchewan River from a Husky Energy pipeline leak in July 2016. 

Enhanced features

The train that derailed in December used a mix of jacketed TC-117R cars and CPC-1232 cars, which are not quite the same as the new TC-117J tanks involved in Thursday’s incident. 

TC-117R cars are older cars retrofitted to meet the same standards as the brand new TC-117s touted by Transport Canada in the years following the deadly Lac-Mégantic rail disaster. 

CPC-1232 cars are industry-sponsored and meant to be safer than the DOT-111 tank cars involved in Lac-Mégantic, according to the U.S. Bureau of Rail Statistics.

The shells on retrofitted 117R cars are slightly thinner than those on new 117 cars, according to Ian Naish, a former director of rail investigations for the TSB — as are the shells on jacketed CPC-1232s, according to the bureau.

In the wake of Lac-Mégantic, Transport Canada called for the new TC-117 rail cars to become the new standard for transporting flammable liquids. The cars feature several enhanced safety features, including:

  • A jacket for improved puncture resistance.
  • Thermal protection that can withstand exposure to a 100-minute fire without rupturing.
  • Shields on the ends of each tank to prevent a breach from collisions with adjacent tanks.
  • Mandatory top fitting protection covers for the valves on top of the tank car.
(Transport Canada/CBC)

Still, even with new TC-117 tank cars in use Thursday, “again the tank cars don’t seem to be able to contain anything and they do pile up and there’s big releases,” Naish said. 

“It does raise the question of how much better they perform in derailments than the other tank cars. Is there really much difference at higher speeds?”

The speed question

Naish wonders at what maximum speed the new 117 cars can survive a derailment without a breach or serious leak.

It’s not known how fast Thursday’s train was going; the TSB has yet to issue its first written update on the investigation. But the TSB has previously reported the maximum speed on that part of the line as 72 kilometres an hour. 

Hours after Thursday’s derailment, Canada’s Transport Minister, Marc Garneau, ordered that all trains with 20 or more cars carrying dangerous goods must slow down their speeds for the next month. 

For the Sutherland subdivision, Garneau’s directive means a speed reduction of nearly 50 per cent. 

Garneau’s country-wide order is already expected to have broader impacts, such as longer wait times for car drivers at train intersections. 

More steps may be taken, Garneau said. 

“I have asked my officials to examine all issues related to these accidents to determine if additional safety measures will be required.”

ConocoPhillips said Friday it was closely monitoring the situation. 

The safety of the community and the protection of the environment is our primary concern,” the company said. 

Familiar concerns

Thursday’s derailment re-stoked the political debate on trains-vs-pipelines.

It also reinforced the possibility that such a fiery derailment could happen in a large population centre 

“We are aware that any derailment raises concerns for our citizens,” Saskatoon Mayor Charlie Clark tweeted on Thursday. 

Pamela Goulden-McLeod, the director of emergency management for the Saskatoon Fire Department, said the city has response plans in place for a potential “derailment emergency” within city limits. 

“We’ve planned and collaborated with many agencies, including rail companies, for such an event,” she said. 

The City of Saskatoon has also expressed a desire to have rail lines moved outside of the city. An update on that effort is expected some time this year.

SOURCE: CBC.ca

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