Hazmat investigators respond: 47 Freeway closed after large rig carrying lithium-ion batteries overturns in San Pedro

Hazardous materials investigators are working in San Pedro, where a large drilling rig carrying lithium-ion batteries overturned, causing a partial closure of the 47 Freeway in the Long Beach area, according to authorities.

The batteries in the vehicle's shipping container were damaged, burning and degassing, and there were reports of one battery exploding, the Los Angeles Fire Department said in an alert at 2 p.m. Two hours earlier, the LAFD said firefighters and a hazmat team responded to the scene near 940 North Seaside Avenue.

No injuries were reported and no evacuations were ordered as the highway was closed between Ferry Street and Long Beach, authorities said. No widespread threats or dangers to surrounding areas have been reported.

“Firefighters have created a large perimeter around the site and are in defensive mode,” LAFD officials said.

LAFD said first responders kept their distance and used hose lines to protect themselves. According to the National Fire Protection Association, such batteries can be highly flammable and even explosive.

“While these batteries provide an effective and efficient source of energy, the likelihood that they will overheat, catch fire and even cause explosions increases if they are damaged or improperly used, charged or stored,” the group says on its website.

Check back for updates on this developing story.

“Emergency forces will set up hose lines in the event of a fire risk and decontamination stations in the event of exposure to hazardous substances,” the LAFD warning says.

At around 2 p.m., aerial footage captured by SkyCAL showed the big rig still lying on its side.

Check back for updates on this developing story.