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Table 1

Origin of the answers.

Country Nuclear regulatory authority Nuclear utility and/or Nuclear Power Plant (NPP)
Belarus X  
Belgium X X (Electrabel: 2 NPPs)
Canada X  
China X  
Czech Republic X  
Finland X X (Loviisa NPP)
France X X (Électricité de France: 19 NPPs)
Germany X  
Japan X X (from 10 utilities: 42 NPPsa)
Lithuania X  
The Netherlands X  
Republic of Korea   X (Korea Hydro & Nuclear Power: 4 NPPs)
Romania   X (Cernavoda NPP)
Slovakia X  
Slovenia X X (Krško NPP)
Spain X X (Cofrentes NPP)
Sweden X X (Forsmark NPP and Ringhals NPP)
Switzerland X X (Leibstadt NPP)
Ukraine X  
United Kingdom X X (Sizewell B NPP)
United States of America   X (Exelon (13 NPPs), Palo Verde NPP, Cook NPP and 55 other NPPsb)

The ISOE Asian Technical Centre has collected 10 questionnaires from Chubu Electric Power Co., Chugoku Electric Power Co., Hokkaido Electric Power Co., Hokuriku Electric Power Co., Japan Atomic Power Co., Kansai Electric Power Co., Kyushu Electric Power Co., Shikoku Electric Power Co., Tokyo Electric Power Co. and Tohoku Electric Power Co.


The ISOE North American Technical Centre has provided a set of data collected in 2015 and covering 70 NPPs. Exelon utility, Palo Verde and Cook NPPs were included in the set of data and have also answered directly to the survey in 2017.

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