Naslov
Intermediate Leg SBLOCA - Long Lasting Pressure Transient

Autori
Konjarek, Damir ; Bajs, Tomislav ; Vuković, Josip

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 8th International Conference on Nuclear Option in Countries with Small and Medium Electricity Grids / Pevec, Dubravko ; Subašić, Damir ; Šimić, Zdenko - Zagreb : Hrvatsko nuklearno društvo, 2010, S6-116.1

ISBN
978-953-55224-2-3

Skup
8th International Conference on Nuclear Option in Countries with Small and Medium Electricity Grids

Mjesto i datum
Dubrovnik, Hrvatska, 16.05.2010. - 20.05.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
SBLOCA; PWR; RELAP

Sažetak
The basic phenomenology of Small Break Loss of Coolant Accident (SBLOCA) for PWR plant is described with focus on analysis of scenario in which reactor coolant pressure decreases below secondary system pressure. Best estimate light water reactor transient analysis code RELAP5/mod3.3 was used in calculation. Rather detailed model of the plant was used. The break occurs in intermediate leg on lowest elevation near pump suction. The size of the break is chosen to be small enough to cause cycling of safety valves (SVs) on steam generators (SGs) for some time, but, afterwards, it is large enough to remove decay heat through the break, causing cooling the secondary side. In this case of SBLOCA, when primary pressure decreases below secondary pressure, long lasting pressure transients with significant amplitude occur. Reasons for such behavior are explained.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA