Electric car batteries can catch fire days after an accident

New technology also is turning into a safety challenge for first responders.

By Aleanna Siacon / Detroit Free Press

When a Tesla Model S crashed into a palm tree and caught ablaze just outside of Fort Lauderdale, Florida, last February, firefighters struggled to extinguish the flames and the car reportedly re-ignited multiple times.

Similar stories of electric vehicles bursting into stubborn flames have cropped up from Florida and California to Austria and China.

While electric cars are transforming commuting, the new technology also is turning into a safety challenge for first responders.

According to researchers, lithium-ion batteries are prone to a phenomenon known as thermal runaway — a process where battery temperatures sharply increase to the point where they catch on fire or explode.

Rochester Hills, Michigan, Fire Chief Sean Canto said the National Fire Protection Association (NFPA) has put together alternative fuel vehicle safety training for fire departments, which is considered “best practices” within the industry.

Those include:

  • Locating the car’s power source, and breaching the boxes/casing
  • Using copious amounts of water to continuously cool the car battery, in addition to conventional fire suppression tools and tactics (like firefighting foam)
  • Keeping the car away from structures after the incident, because of the danger of re-ignition

Still, fighting electric vehicle car fires can be tricky.

Auburn Hills Assistant Chief Antonio Macias said a big part of responding to roadway accidents is recognizing the vehicle and knowing where to access and how to cut the car’s power source.

For example, Macias said, electric car batteries are often placed in “inconspicuous places,” which can be difficult for first responders to access. He added that firefighting foam isn’t effective unless it’s able to penetrate the car battery’s case.

Royal Oak Fire Chief David Cummins said first responders use mobile apps that can help them quickly learn how to locate and properly disable a car’s power sources. Among them, he said, is the NFPA/Moditech AFV EFG (Alternative Fuel Vehicle Emergency Field Guide).

Alfie Green, chief of training for the Detroit Fire Department, said mobile apps are a huge help, especially because the color of the wiring in cars hasn’t been standardized.

Green said the city focuses on training to keep firefighters up to date on the latest “idiosyncrasies” with various car models.

The biggest tool in fighting electric vehicle fires is the most basic: water.

But it takes lots of it — “copious amounts,” Macias said.

The response is needed, he said, because the batteries need to be cooled to keep them from re-igniting.

“You don’t want to mix water and batteries, but unfortunately this is where you got to go,” Macias said.

Cummins said that while the hazards involved in responding to an electric vehicle aren’t dissimilar to an ordinary car fire, these batteries pose a unique challenge.

“The one marked difference would be that if the batteries are involved, some metals in the batteries may react violently with water,” Cummins said.

What’s important, Wells said, is to fight any car fires from a safe distance and to “take extreme caution” with any electric hazards.

As technology evolves, fire officials said, it’s crucial that departments keep a dialogue with automakers regarding vehicle safety.

In Auburn Hills, Macias said his department received product-specific emergency response guidelines — specifically, PowerPoints about self-driving vehicles.

“The more that we can work together and give them ideas about how we might be able to mitigate the incident without causing them more cost on production … the safer we will be,” Macias said.

Talk to us

More in Herald Business Journal

Site preparation for housing development was underway Tuesday, June 8, at the property known as Frognal Estates near Edmonds. (Chuck Taylor / The Herald) 20210608
Site prep underway at contested development near Mukilteo

The site near Picnic Point recently sold for $24 million after the previous developer filed for bankruptcy.

A portion of the site of the proposed Lake Stevens Costco at the intersection of Highway 9 (right) and South Lake Stevens Road (below, out of view). (Chuck Taylor / Herald file)
Shovel alert: Groundbreaking on Lake Stevens Costco is near

A land sale in early June cleared the way. The mayor says dirt could be flying as soon as next week.

FILE - In this Feb.14, 2019 file photo, an Airbus A380, left, and a Boeing 747, both from Lufthansa airline pass each other at the airport in Frankfurt, Germany. The United States and the European Union on Tuesday appeared close to clinching a deal to end a damaging dispute over subsidies to Airbus and Boeing and lift billions of dollars in punitive tariffs. (AP Photo/Michael Probst, File)
Airbus-Boeing deal eases US-EU tensions but conflicts remain

For now, though, a truce in the Boeing-Airbus dispute goes a long way toward repairing a huge relationship.

The Everett Post Office is shown with a "now hiring" sign in 2019. (Sue MIsao / Herald file)
Washington unemployment rate dipped to 5.3% in May

Private sector employment increased by 7,000 jobs and government employment increased by 1,300 jobs.

Boeing 737 Max airplanes, including one belonging to TUI Group, left, sit parked at a storage lot, Monday, April 26, 2021, near Boeing Field in Seattle.  Lawmakers, on Tuesday, May 18,  are asking Boeing and the Federal Aviation Administration for records detailing production problems with two of the company's most popular airliners. The lawmakers are focusing on the Boeing 737 Max and a larger plane, the 787, which Boeing calls the Dreamliner.  (AP Photo/Ted S. Warren)
Biden administration talking to China on Boeing Max approval

The planes remain banned in the country while other jurisdictions have reauthorized it following crashes.

Pho
You voted: The best pho in Snohomish County

Even during a pandemic, people still have their favorites

Supporters march Wednesday afternoon across from Providence Medical Center in Everett on May 5, 2021. (Kevin Clark / The Herald)
Everett nurses threaten to strike as contract talks stall

Union leaders say Providence’s latest offer includes low wages and cuts to benefits and paid leave.

Bothell man sentenced for illegally trading Amazon stock

He got confidential information from his wife, who was an Amazon finance employee at the time.

Snohomish roofing company fined $1.2M for safety violations

State inspectors noted a dozen “willful serious violations.” Allways Roofing says it will appeal.

Most Read