Containment behaviour in the event of core melt with gaseous and aerosol releases (CONGA)

A study on physicochemical properties of epoxy coating system for nuclear power plants

“…These epoxy resins coated on the liner plate should cover the surface for a predetermined operating period and they should also remain effective over the life of the component and during accident conditions. Though, the appearance of a crack or blistering has been considered as a criterion for acceptance, the damaged states of the epoxy coatings on the liner plate are very difficult to define (Friesen et al, 2001;Clough, 1996;Kamal and Huang, 1992). The epoxy coatings may undergo rapid crack growth at high temperatures and pressures which are expected during severe accidents, resulting in a loss of adhesive strength and a corresponding decrease in impact stress.…”

The Composite Materials for Localization of Volatile Radioactive Iodine Forms from Steam-Air Phase during Severe Accidents at NPPs

“…However, in accordance with the general requirements for safety systems, alongside active ventilation systems for intercontainment space, nuclear power plants should include a passive ventilation system, which can be used during hypothetical severe accident with a complete loss of power supply. Now a passive-mode environmental protection system for decontamination of intercontainment area, which can be used in the event of severe accidents, was developed (Bronnikov, 2004;Zeyen et al, 2006;Friesen et al, 2001;Asmolov, 1994;Kulyukhin et al, 2008; State of the art report on iodine chemistry, 2007; State of the art report on nuclear aerosols, 2009; Kulyukhin et al, 2011). The basic purpose of developed passive filtration system is creation of a rarefaction in an intercontainment space due to the organized removal of the radioactive steam-air mixture from an intercontainment space at full loss of all power sources.…”