Special incidences in nuclear power plants in the Federal Republic of Germany from 1965 until 1976

The survey of 156 special incidences in nuclear power plants in the FRG was compiled with the aspect in mind to present a true picture of the whole spectrum of incidents during the operation, commissioning and the construction phase of nuclear power plants. Thus, not only incidents according to the definition in the annex 1 of the Radiation Protection Ordinance, but also less significant events are recorded. Operational experience documented in this compilation reveals, that even severe incidents, by the combined efforts of safety systems, or, if necessary, by the intervention of personnel, were under complete control. This resulted in neither personnel or any other persons coming to harm. The most frequent causes for incidents were faults in the design basis, others were defects in construction and fabrication supervision. In general, incidents only occurred in the case of several events falling together, whereby each event on its own would possibly be only relatively unimportant. (orig./HP)