Naslov
Optimization of OPDT Protection for Overcooling Accidents

Autori
Benčik, Vesna ; Grgić, Davor ; Šadek, Siniša ; Čavlina , Nikola

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

Izvornik
Proceedings of the 10th International Conference on Nuclear Option in Countries with Small and Medium Electricity Grids / Čavlina, Nikola ; Grgić, Davor ; Pevec, Dubravko - Zagreb : Hrvatsko nuklearno društvo, 2014, 153-1

ISBN
978-953-55224-6-1

Skup
10th International Conference on Nuclear Option in Countries with Small and Medium Electricity Grids

Mjesto i datum
Zadar, Hrvatska, 01.06.2014. - 04.06.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
OPDT protection; decrease of feed water temperature; steam line break

Sažetak
Overcooling accidents are typically resulting in power increase due to negative moderator feedback. There are more protection set points resp onsible for terminating power increase. OPDT protection set point is typically protection from exceeding fuel centre line temperature due to reactivity and power increase. It is important to actuate reactor trip signal early enough, but to be able to filte r out events where actuation is not necessary. Different concepts of coolant temperature compensation as part of OPDT set point protection were studied for decrease of feedwater temperature accident and for small main steam line breaks from full power for NPP Krško. Computer code RELAP5/mod 3.3 was used in calculation. The influence of different assumptions in accident description as well as nuclear core characteristics were described.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA