AP

Firm: Faulty weld, pressure on pipe led to Kansas oil spill

Feb 9, 2023, 11:48 AM | Updated: 10:15 pm

FILE - In this photo taken by a drone, cleanup continues in the area where the ruptured Keystone pi...

FILE - In this photo taken by a drone, cleanup continues in the area where the ruptured Keystone pipeline dumped oil into a creek in Washington County, Kan., on Dec. 9, 2022. A faulty weld at a bend in an oil pipeline contributed to a spill that dumped nearly 13,000 bathtubs' worth of crude oil into a northeastern Kansas creek, the pipeline's operator said Thursday, Feb. 9, 2023, estimating the cost of cleaning it up at $480 million. (DroneBase via AP, File)

(DroneBase via AP, File)

TOPEKA, Kan. (AP) — A faulty weld at a bend in an oil pipeline contributed to a spill that dumped nearly 13,000 bathtubs’ worth of crude oil into a northeastern Kansas creek, the pipeline’s operator said Thursday, estimating the cost of cleaning it up at $480 million.

Canadian-based TC Energy said the flawed weld caused a crack that then grew over time because of the stress on the bend in its Keystone pipeline system in rural pastureland in Washington County, about 150 miles (240 kilometers) northwest of Kansas City. The company said the weld was for a fitting that connected two sections of pipe, and the fitting and weld came from a manufacturing plant.

The company, which is responsible for overseeing inspections of its pipeline system, said it still is investigating the cause of the pipeline stress and is analyzing “other areas with potentially similar conditions.” The Dec. 7 rupture spilled nearly 13,000 barrels of crude oil, with each barrel containing 42 gallons (159 liters), the size of a standard household bathtub.

“Our focus continues to be the safe operation of the pipeline system,” the company said in a statement.

No one was evacuated following the spill, and officials said it did not affect the two larger rivers and reservoir downstream. With federal regulators’ permission, the company reopened the affected segment a little more than three weeks after the spill, though at a lower pressure than before.

But Bill Caram, executive director of the advocacy group Pipeline Safety Trust, said it’s “troubling” that TC Energy said the flawed weld came from a “fabrication facility.” He said conditions there should have been ideal for making a weld that would not fail — as opposed to welding in the field.

“It begs the question of how many other bad welds are on the Keystone pipeline from this same fabrication facility,” Caram said.

Caram also said pipeline companies and pipeline regulators in the U.S. Department of Transportation struggle to deal with a combination of multiple threats that on their own don’t appear to need immediate attention but together add up.

The spill was the largest onshore in nine years and larger than than 22 previous spills on the Keystone system combined, according to U.S. Department of Transportation data. That’s even though the company decreased its estimate for its size from its initial figure of 14,000 barrels.

Zack Pistora, who lobbies the Kansas Legislature for the Sierra Club, argued that the company’s explanation shows the pipeline’s design was flawed. In July 2021, a U.S. Government Accountability Office report said the four biggest previous spills on the Keystone system were caused by issues tied to its original design, its construction or the manufacturing of the pipe.

The company’s statement Thursday said an analysis of the pipeline’s metal showed no issues with it or its strength.

The Kansas House energy committee plans to have hearings on the oil spill in March, according to its chair, state Rep. Leo Delperdang, a Wichita Republican whose career includes a stint with a pipeline company.

“I’ve got lots of questions,” he said.

The 2,700-mile (4,345-kilometer) Keystone system carries heavy crude oil extracted from tar sands in western Canada to the Gulf Coast and to central Illinois.

Concerns that spills could pollute waterways spurred opposition to plans by TC Energy to build another crude oil pipeline in the same system, the 1,200-mile (1,900-kilometer) Keystone XL, across Montana, South Dakota and Nebraska. President Joe Biden’s cancelation of a permit for the project led the company to pull the plug on the project in 2021.

Pistora argued that people don’t have any real assurances that the existing Keystone pipeline won’t “fail again.”

“It should be unsettling to everyone along the pipeline path and to Americans generally,” he said.

Local farmer Bill Pannbacker said the rupture occurred near his property line, spraying crude onto his pasture at a point after the pipe goes under a creek and starts to ascend an 80-foot (24-meter) hill. He suggested that a straight section of pipe would be less prone to problems but added, “I’m not an engineer.”

Pannbacker said crews swarmed over the area as they cleaned up the mess, aided by relatively dry weather. The company said its estimate for the cost of the cleanup may change, calling its commitment to the work “unwavering.”

“It is like a little city out there,” said Pannbacker, also a former Kansas House member. “I just went by last night, and the lights get your attention, but I mean, they’re working hard.”

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Hollingsworth reported from Mission, Kansas.

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Follow John Hanna on Twitter: https://twitter.com/apjdhanna

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Firm: Faulty weld, pressure on pipe led to Kansas oil spill