Developing a meaningful QA trend analysis program

A trend analysis program is being developed by the nuclear quality assurance (NQA) department at Public Service Electric and Gas Company, adapted from the principles advocated by W. Edwards Deming using statistical process control methods. It deals with identifying performance indicators that monitor the activities of a process considering both inputs and outputs, determining whether the process is stable or unstable, taking actions accordingly, and continuing to monitor the process with the objective of continual improvement of quality