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Unplanned Capability Loss Factor up to

Weighted average includes all available data of operational & shutdown reactors from their commercial operation
Country Number of Reactors UCL [%]  
ARGENTINA 3 7.8  
ARMENIA 1 3.4  
BELARUS 2 12.8  
BELGIUM 8 6.5  
BRAZIL 2 7.2  
BULGARIA 6 1.3  
CANADA 25 9.8  
CHINA 57 1.0  
CZECH REPUBLIC 6 3.4  
FINLAND 5 2.2  
FRANCE 68 8.9  
GERMANY 27 5.1  
HUNGARY 4 2.6  
INDIA 25 10.1  
IRAN, ISLAMIC REPUBLIC OF 1 5.2  
ITALY 4 7.1  
JAPAN 58 3.9  
KOREA, REPUBLIC OF 28 1.8  
LITHUANIA 2 5.8  
MEXICO 2 7.1  
NETHERLANDS, KINGDOM OF THE 2 4.0  
PAKISTAN 7 8.6  
ROMANIA 2 1.8  
RUSSIA 42 3.7  
SLOVAKIA 8 1.6  
SLOVENIA 1 1.6  
SOUTH AFRICA 2 6.6  
SPAIN 10 3.8  
SWEDEN 12 8.5  
SWITZERLAND 5 2.8  
UKRAINE 17 4.0  
UNITED ARAB EMIRATES 4 3.0  
UNITED KINGDOM 43 12.4  
UNITED STATES OF AMERICA 119 5.0  
Total 614 5.6  

The following information is included in the totals:

TAIWAN, CHINA 6 2.4  


Above data generated by the PRIS database. Last update on 2026-07-17


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