Runaway Polymerization, Lithium-Ion Apartment Fire, and a Radioactive Package Scare

This week on The Newsletter Podcast, we cover the runaway polymerization event involving Methyl Methacrylate (MMA) in Garden Grove, California. Following a refrigeration system failure, a bulk storage tank began overheating, triggering emergency declarations, large-scale evacuations, and concerns over a potential catastrophic tank rupture. We examine what MMA is, why polymerization reactions become dangerous, and the tactical options available to emergency responders. We also head to Honolulu, Hawaii, where a lithium-ion battery-powered e-bike fire displaced residents from an apartment building and required a second-alarm response that included hazmat resources. The incident serves as another reminder of the growing challenges battery-powered devices present to the fire service. Finally, we wrap up in Cranston, Rhode Island, where a suspicious package marked "Radioactive UN2908" prompted a hazmat response after being discovered at an apartment building. What responders found inside may surprise you.