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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 8.0  
ARMENIA 1 3.4  
BELARUS 2 16.3  
BELGIUM 8 6.6  
BRAZIL 2 7.5  
BULGARIA 6 1.3  
CANADA 25 10.0  
CHINA 56 1.0  
CZECH REPUBLIC 6 3.4  
FINLAND 5 2.1  
FRANCE 68 9.0  
GERMANY 27 5.1  
HUNGARY 4 2.6  
INDIA 24 10.2  
IRAN, ISLAMIC REPUBLIC OF 1 5.6  
ITALY 4 7.1  
JAPAN 58 4.0  
KOREA, REPUBLIC OF 28 1.7  
LITHUANIA 2 5.8  
MEXICO 2 6.9  
NETHERLANDS, KINGDOM OF THE 2 4.0  
PAKISTAN 7 9.0  
ROMANIA 2 1.9  
RUSSIA 42 3.8  
SLOVAKIA 8 1.6  
SLOVENIA 1 1.6  
SOUTH AFRICA 2 6.5  
SPAIN 10 3.8  
SWEDEN 12 8.4  
SWITZERLAND 5 2.5  
UKRAINE 17 4.0  
UNITED ARAB EMIRATES 4 2.8  
UNITED KINGDOM 43 12.3  
UNITED STATES OF AMERICA 119 5.0  
Total 612 5.7  

The following information is included in the totals:

TAIWAN, CHINA 6 2.4  


Above data generated by the PRIS database. Last update on 2025-11-06


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