California Crews Test Chemical Tank Pressure

Crews in Orange County, California, initiated an all-night operation on Sunday to test the pressure within a cracked chemical tank, aiming to eliminate the risk of a Boiling Liquid Expanding Vapor Explosion (BLEVE). This action follows a chemical leak from a tank containing an estimated 7,000 gallons of methyl methacrylate at GKN Aerospace in Garden Grove, which has prompted evacuation orders for over 50,000 residents. The operation seeks to determine if pressure has been released or if vapor has accumulated inside the tank, which has been leaking for four days.

Orange County Fire Authority Interim Chief TJ McGovern stated that confirming the elimination of the BLEVE threat is critical. An initial assessment on Saturday night identified a single crack in the tank, which could alter the response strategy. The internal temperature of the tank was reported to be over 100 degrees Fahrenheit, significantly above the optimal temperature for the substance.

California Governor Gavin Newsom has requested an Emergency Declaration from President Trump to activate FEMA and secure federal assistance and funding for the response efforts. This declaration would support local and federal partners in managing the incident and ensuring resources for first responders.