Are you sure the sole goal really is providing safe storage? Or is it providing the safest possible storage within a certain minimal cost envelope, or even providing it at a profit?

People get lazy and complacent even if well-compensated, even if well-rested thanks to proper staffing, and even if everyone involved fully believes in their mission. But each of those can mitigate against that risk.

On the other hand, if it’s a (typical) underpaid understaffed project to which people are assigned, you’re in for a world of hurt.