Vyacheslav Blednykh, Deputy Chief Technologist of Zaporizhzhia NPP, participated as an international expert in the work of the WANO Support Mission at Bushehr NPP, Iran, where he presented the positive experience of the development and implementation of the ZNPP emergency maps.
The WANO Support Mission at Bushehr NPP was dedicated to an important topic: “Ways to assess nuclear safety at the NPPs”.
“Bushehr NPP requested assistance from WANO to assist in editing the accident classifier based on the 4-levels emergency response classifier proposed by the IAEA. And since Zaporizhzhia NPP had moved quite far in this direction, and considerable experience had been accumulated at its site, WANO offered to share its experience,” said the Deputy Chief Technologist of Zaporizhzhia NPP Vyacheslav Blednykh.
“The IAEA's requirements are to classify an accident by technological criteria as early as possible without waiting for radiological surveillance input data, in order to determine, in the shortest possible time, how high the level of its danger is, and to take the necessary measures as soon as possible,” Vyacheslav Blednykh explained.
At Zaporizhzhia NPP Vyacheslav Blednykh is the developer of the classification maps of the emergency map. This work was performed by him several years ago - in the process of bringing the plant emergency documentation into compliance with the IAEA recommendations. The purpose of these maps is to establish a classification of all potential accidents (industrial, on site, communal).
The experience gained at Zaporizhzhia NPP was shared with other Ukrainian NPPs and was successfully implemented taking into account the characteristics of each site. Those developments were recognized by WANO experts as a positive practice worthy of being presented on the world level.
During the mission Vyacheslav Blednykh developed a number of recommendations for the colleagues of Bushehr NPP, those recommendations were relevant to the use of their design materials for the purpose of transition to the new classifier. He also adjusted the template developed by Iranian experts, pointed out the errors in the algorithm and recommended the way to move ahead.
“If we are invited for participation in such missions as international experts, and we are asked to share our experience, this is our country's prestige, first of all. This is a high assessment of Ukrainian nuclear power industry at the global level,” ZNPP Deputy Chief Technologist summarized his participation in the mission.