Original scientific paper
MATHEMATICAL MODEL OF THE NPP KRŠKO PCFV SYSTEM FOR THE RELAP5 COMPUTER CODE
BORNA POŠTA
orcid.org/0000-0001-6312-1166
; Faculty of Electrical Engineering and Computing, University of Zagreb Unska 3, 10000 Zagreb, Croatia
SINIŠA SINIŠA
; Faculty of Electrical Engineering and Computing, University of Zagreb Unska 3, 10000 Zagreb, Croatia
Abstract
Containment building is the final barrier for radioactive releases from a
nuclear power plant (NPP). Preserving its integrity will minimize these releases
even in a case of a severe accident with core degradation and melt discharge in the
containment accompanied with the pressure and temperature increase. Installation
of a venting system with ability to filter radioactive fission products is a preferred
way to deal with the issue in present and future NPPs, especially after the
Fukushima accident. Such system, called passive containment filtered venting
system (PCFV), was installed in 2013 in the NPP Krško. Thermal hydraulic model
of the PCFV system which included aerosol and iodine filters, associated pipings
and valves was developed for the best-estimate computer code RELAP5. Main
results and discussion are presented and compared with relevant plant
documentation.
Keywords
Containment; NPP Krško; PCFV system; RELAP5 code
Hrčak ID:
199751
URI
Publication date:
15.12.2017.
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