From a purely functional point of view the more efficiently a machine performs its task of processing material then the better it is. But, in order for a machine to be viable it must also be safe. Safety therefore must be regarded as a crucial component of machine design and considered early in the overall machine design process.
Prevailing global safety system design standards such as ISO13849-1/2, ANSI B11 and ANSIZ244.1 readily refer to risk assessment as the foundation from which all safety related design decisions should flow. Moreover, their normative references to Risk Assessment and Risk Reduction standards (ex: ANSI B11.0, ISO12100) point to a methodology that provides a well-defined approach to achieving safety goals.
This Machine Safety Lifecycle, as shown above, consists of five steps the underpinnings of which are:
The steps of the life cycle include:
While the purpose of the production control system is to produce and the safety system is to protect, they are not mutually exclusive and should not be held apart during design. In fact, significant gains in OEE can be achieved by including safety early in the overall design process…
So, achieving a Safe and Productive Workplace starts by leveraging the machine safety lifecycle early in the machine design process and following the five steps described above.
Interested in learning more? Here are some new links and educational documents you might find helpful: