The fire at the Waste Isolation Pilot Plant was preventable.

Most nuclear accidents and chemical plant accidents are preventable. If the owner fixed every irregularity immediately, and kept the plant shut down whenever its equipment was not entirely working normally, that would prevent most accidents.

They don't do that because that would be expensive; therefore, the owner cuts corners. Nearly always, no accident results. But some accidents are so bad that even once in a rare while is too much. To avoid those accidents, one must not cut corners.