SCORPIO-VVER CORE SURVEILLANCE SYSTEM FOR VVER-440 REACTORS IN CZECH REPUBLIC AND SLOVAK REPUBLIC
22nd Symposium of AER on VVER Reactor Physics and Reactor Safety (2012, Průhonice, Czech Republic)
CORE MONITORING, SURVEILLANCE AND TESTING
The SCORPIO-VVER Core Monitoring System has proved since the first installation at
Dukovany NPP (CZ) in 1999 to be a valuable tool for the reactor operators and reactor
physicists. It is now operated on 4 units of Dukovany NPP and 2 units of Bohunice NPP (SK)
replacing the original Russian VK3 system. By both Czech and Slovak nuclear regulatory
bodies the SCORPIO-VVER was licensed as a Technical Specification Surveillance Tool.
Since it?s first installation, the development of SCORPIO-VVER system continues along with
the changes in VVER reactors operation. The system is being adapted according the utility
needs. With its flexible and modular framework successfully responses to the plant operating
needs and advances in nuclear fuel cycle strategies and fuel design. Modular framework
allows for easy modifications of the system and implementation of new methods in physical
modules. These facts have been confirmed by successful upgrades and more than 13 years of
reliable operation of the core monitoring system in two countries and six VVER-440 units.
This article describes the current status of the core surveillance system SCORPIO-VVER in at
Dukovany NPP in Czech Republic and at Bohunice NPP in Slovak Republic.