The risk of a catastrophic explosion at a damaged chemical tank in Southern California has been eliminated following a close overnight inspection that confirmed a crack in the tank relieved pressure and cooled the chemical, authorities said Monday.
Officials said crews conducted tank temperature checks at night to reduce risks to firefighters, avoiding daytime operations when heat from the tank made conditions around it most dangerous. The overnight mission allowed crews to verify the crack and confirm temperatures were falling, Orange County Fire Authority division chief Craig Covey said Monday morning.
Covey said the results of overnight evaluation of the tank—that the temperature inside had dropped and that pressure had been released—was “incredibly positive news.”
However, evacuation orders remained in place for about 50,000 people in Garden Grove, California, located south of Los Angeles.
Covey said falling temperatures and the release of pressure from the tank were allowing officials to “turn the corner on this incident” after days of concern about a possible explosion.
There has been no chemical leak as of early Monday, but the Orange County Fire Authority said the risk to public safety is “ongoing.”'