Lab safety is decided not by the number of rules, but by everyone being able to say "what is dangerous."
Safety management has the same structure as the inquiry of Lab OS Chapter 02. Predict what could happen (hypothesis), compare it with what happened (observation), and update the rules (belief). An accident that was not predicted is a "near miss," and reporting it is the only way to update the rules. We report not to blame, but to prevent the next one.