Emergency crews in Garden Grove are continuing large-scale tank cooling operations after concerns emerged that overheated industrial chemical tanks could rupture or trigger a catastrophic explosion.The incident has drawn attention to one of the most critical defensive tactics used in hazardous-material firefighting: water deluge cooling, also known as tank cooling or exposure protection. The strategy involves flooding tanks, piping, and nearby structures with massive amounts of water to keep temperatures under control and prevent pressurized chemicals from reaching failure conditions.