The explosion involved a nitrous oxide holding tank and two tankers, and the facility has been closed since. That has caused a shortage of the gas, which serves as the whipping agent in whipped cream dispensers.
Atlantic reporter Sarah Zhang talked to U.S. Chemical Safety & Hazard Investigation Board investigator Dan Tillema about the explosion. Although the CSB report is not out yet, here’s what Tillema said about it:
[Tillema] now thinks the likely culprit is the pump used to get nitrous oxide into the tanker. (There is also a small chance it was stray static electricity, which is impossible to completely rule out.) Residual heat in the pump can heat up the nitrous oxide enough to make the gas decompose into nitrogen and oxygen. This reaction releases more heat, which in turn makes more gas decompose, and so on. Kaboom. Tillema’s investigation will be published early next year, along with recommendations to prevent such accidents in the future.
Tillema says he has gotten questions about the accident’s connection to the whipped cream shortage. But as someone who has lived and breathed this investigation for months, he can’t help but think of the man who died. “It’s hard for me to worry about the whipped cream knowing that Jesse’s family members and coworkers are thinking about a lot more than whipped cream this year,” he says.