Only then, can anyone from a beginner to an accomplished pianist sit down with any hope of making music, rather than noise. In a real system, the interaction and interrelationships are more complex. Without too much confusion or loss in clarity, the loops can also conceptually link quality system elements, since these are descriptive and generic and do not reflect a particular group of people or functions. Some loops can be associated with a specific sequence of elements to accomplish a specific subsystem objective, or are related to the objective. Other loops may share elements and are thereby interrelated and interdependent among themselves.
Some examples are most likely in order.
There is a strategic loop that ties in the structure of the organization, functional responsibilities, quality system definition, positive recall of material moved past regular check points, control of non-conforming material, overall material handling, and feedback at several stages to upstream elements. There is a tactical, functional loop from the development of quality plans, through measurement and test equipment, process control, inspection and testing, back to quality systems, specifically quality planning. These can be seen as tying together quality systems elements in no particular predetermined order associated by their number in the ISO 9001 or QS-9000 standards. Some of the loops are closed in that they have a logical starting place, thread through several elements and a termination back at the start. These loops can be shown graphically, and should be sketched out as a system is defined and developed.