In an article at http://www.safetyxchange.org/, I read that there were more than 700 violations of safety, operation and environment found by OSHA, EPA and other regulating agencies. It was questioned about the compulsions or need for allowing the unit to operate though so many violations were found before the spillage itself. Many times, regulators identify violations and give time to rectify or pay penalty later for continued violations. Only a few times, unit operations were suspended or stopped. This creates a lenient attitude by managements that outweigh profits over the loss of production suffered because of suspension of unit operations to carryout works for rectifying the violations. After some accident / incident occurs, we repent for not doing the right thing before the event. This like applying the balm after burning rather than avoiding the burns itself.
If plant operations are stopped after allowing some time to correct, then everybody will fall in line and though it looks difficult to achieve safety discipline and people are scared of immediate losses, long term benefits will outweigh these losses and every one will follow the directions of regulators. Or they will not give chance for regulators to find safety violations and a system of identification and rectification will be established by the organizations themselves.