Abstract
The paper presents general approach, used methods and form of documentation of the results have been applied within the shutdown and low power PSA (SPSA) study for Mochovce NPP, Unit 1,Slovakia. The SPSA project was realized by VUJE Trnava Inc., Slovakia in 2001-2002 years. Level 1 SPSA study for Mochovce NPP Unit 1 covers internal events as well as internal (fires, floods and heavy load drop) and external (air craft crash, extreme meteorological conditions, seismic event and influence of surrounding industry) hazards. Mochovce NPP consists of two operating units equipped by VVER 440/V213 reactors safety upgraded before construction finishing and operation start. 87 safety measures based on VVER 440 operational experience and international mission insights were implemented to enhance its' operational and nuclear safety. The SPSA relates to full power PSA (FPSA) as a continuation of the effort to create harmonized level 1 PSA model for all operational modes of the plant with the goal to use it for further purposes as follows : ・Real Time Risk Monitor, ・Maintenance Optimalization, ・Technical Specifications Optimalization, ・Living PSA, etc.
