What is our experience in plant transients telling us

This chapter discusses some aspects of the Significant Event Evaluation and Information Network (SEE-IN program), some general findings that pertain to nuclear plant trips and scrams, and some of the things that have been learned while managing the SEE-IN program. SEE-IN provides a system for the identification of significant operating events and generic problems or root causes, which are reported to the entire nuclear industry in a timely manner. The main purpose of SEE-IN is to reduce the number and severity of plant incidents. The fact that there were only four events in 1980, one in 1981, one in 1982, and one in 1983 indicates a trend toward a reduction in the number of major incidents at operating nuclear plants in the US. It is concluded that if the trend continues and the frequency of events is spread out further in the future, it will confirm that the industry's systematic method of evaluating plant experience and taking corrective actions to avoid problems is reducing the number of major events