PLANT SURVEILLANCE AT ZAPOROZHE

The type of surveillance of nuclear power plants in Ukraine practiced in the early nineties provided the supervisory authority,vith only ina dequate access to information about the current safety status of plant s. In connection with the results of safety analyses of nuclear power plants it became necessary, therefore, to improve the possibility of p lant operation surveillance by the Ukrainian authority. For the Zaporo zhe Nuclear Power Station, a modern surveillance system was designed a s a pilot project, installed, and commissioned for trial operation in late 1995, by the Rossendorf Research Center in a joint effort with th e Rhineland Technical Inspectorate. The system complements the existin g monitoring and surveillance installations by incorporating modern in formation and computer technologies. The system allows the status of t he plant to be observed continuously in normal operation and in cases of maloperation or accident. Consequently, any detectable deviations f rom regular operation can be responded to at an early stage by inquiri es and instructions.