Execution period 2007 - 2009
Contractor Kozloduy NPP Plc.

UPDATING THE EXISTING PROBABILISTIC SAFETY ANALYSIS, LEVEL 1

Updating was performed of the existing Probabilistic Safety Analysis (PSA), Level 1, for full power, low power and shutdown mode of operation, for Kozloduy NPP Units 5&6.

PSA is an important analytical instrument for NPP safety assurance with respect to possible initiating events caused by accidental failure of equipment, human mistake, or external events.

The objectives of PSA are to determine all essential contributors to the risk for certain plant or activity, and to what extent the overall design of the plant is balanced in accordance with the probabilistic safety criteria, if/when such criteria are established.

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