Overview of Containment Filtered Vent Under Severe Accident Conditions at Wolsong NPP Unit 1

Concept for a cyclonic spray scrubber as a fission product removal system for filtered containment venting

“…It has been estimated, for example, that for a single unit CANDU-type PHWR experiencing a station blackout severe accident, any venting systems would have to be able to discharge about 800,000 kg of steam and about 160,000 kg of air and other non-condensable gases over a period of about 5 days to ensure containment integrity (Song et al, 2013).…”

Application of ASTEC, MELCOR, and MAAP Computer Codes for Thermal Hydraulic Analysis of a PWR Containment Equipped with the PCFV and PAR Systems

“…The passive containment filtered venting (PCFV) system and passive autocatalytic recombiners (PAR) are specially designed systems and equipment which operate in the most severe conditions without the need of an operator action. The reports and papers published in the open literature, some of them listed in [1][2][3][4], support the interest of nuclear facilities for such systems to restrict radioactive releases out of the NPPs. Influence of safety systems on containment behaviour is examined by calculating a station blackout event without any recovery actions with three integral severe accident codes: ASTEC, MELCOR, and MAAP.…”