The Seven Lines of Defence Of An SMS
A Safety Management System (SMS) must be effective to conform to the regulatory performance requirements to have in place a process for reviewing the safety management system to determine its effectiveness. A general definition of effective is a process that is successful in producing a desired or intended result or fulfilling a specified function. SMS is a simple concept to operate within a just culture where there is trust, learning, accountability, and information sharing, while determining effectiveness of the system includes several tasks and processes to capture data relevant to effectiveness. SMS in itself cannot fail since it paints a true image of the enterprise. What can fail is trust, learning, accountability, and information sharing to operate within a just culture. As with any effective system, unless there are lines of defence in place, the system is not an effective system. There are seven lines of defence in an effective safety management system. It is difficult to dete...