Investigate almost any workplace disaster (or even small accidents) and you'll find that there were plenty of warning signs known to both workers and managers, but there was no existing management system to ensure that such warnings get addressed before disaster strikes. In addition, if you've been following the various investigations of the disaster -- from OSHA, as well as interim reports from the US Chemical Safety Board -- you know that plant managers had numerous warnings of unsafe conditions, malfunctioning equipment and previous "close calls." |