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As a result of the Belene NPP design stress tests, the following potential measures for further design improvement in the process of its implementation were proposed: 

• Enhancement of plant robustness against extremely low levels of the Danube River; 

• Enhancement of spent fuel pool robustness against decrease of cooling water level; 

• Increase of safety functions monitoring time; 

• Analysis of the possibilities for forced reduction of containment pressure as a supplementary measure in respect of severe accident management.