Review of safety-related occurrences in nuclear power plants as reported in 1976

The article reviews the ''Reportable Occurrences'' submitted in 1976 to the U.S. Nuclear Regulatory Commission concerning light-water-reactor nuclear power plants. The review covers 1253 reports from boiling-water-reactor facilities and 1264 reports from pressurized-water-reactor facilities. Information is presented in tables listing instrument failures, equipment failures, systems involved, causes, deficiencies and times of occurrence (i.e., refueling, testing, operation, or construction.) The tables give the number of reports concerned which each listed item and therefore indicate the frequencies of events and those events which should receive more attention in the form of maintenance and testing to improve plant reliability and safety.