TY - GEN
T1 - Design and analysis of integrated passive safety system (ipss) for opr1000
AU - Kim, Sang Ho
AU - Joung, Sung Yeop
AU - Chang, Soon Heung
PY - 2013
Y1 - 2013
N2 - Current safety systems can be operated to remove decay heat or mitigate severe accidents by AC power. However, all the active safety systems cannot be used in station black out like the Fukushima accident. The design of integrated passive safety system (IPSS) which can perform various passive safety functions is proposed in this paper. It has the functions of passive decay heat, passive emergency core cooling, passive containment cooling, passive in-vessel retention and ex-vessel cooling, and filtered venting system with containment pressure control. The purpose of this paper is to propose the conceptual design of IPSS and assess the accident scenarios by using MARS code for thermo-hydraulic analysis. The selected accidents are MFLB and LOCA with SBO in OPR1000 which is the representative PWR in Korea. In the specific design of IPSS, the functions are modified and integrated for the simplicity of the design. The addition of IPSS to an original design of a nuclear power plant does not make the design change as a system of non-safety grade. Furthermore, it enhances the safety of a nuclear power plant with the installation of tanks outside containment. The safety duration time can increase by refilling coolant from the containment outside to integrated passive safety tanks (IPSTs). IPSS is the design for the ultimate safety in preparation for severe accidents with the loss of AC power. IPSS shall be used for the supplement of current safety systems, not the replacement.
AB - Current safety systems can be operated to remove decay heat or mitigate severe accidents by AC power. However, all the active safety systems cannot be used in station black out like the Fukushima accident. The design of integrated passive safety system (IPSS) which can perform various passive safety functions is proposed in this paper. It has the functions of passive decay heat, passive emergency core cooling, passive containment cooling, passive in-vessel retention and ex-vessel cooling, and filtered venting system with containment pressure control. The purpose of this paper is to propose the conceptual design of IPSS and assess the accident scenarios by using MARS code for thermo-hydraulic analysis. The selected accidents are MFLB and LOCA with SBO in OPR1000 which is the representative PWR in Korea. In the specific design of IPSS, the functions are modified and integrated for the simplicity of the design. The addition of IPSS to an original design of a nuclear power plant does not make the design change as a system of non-safety grade. Furthermore, it enhances the safety of a nuclear power plant with the installation of tanks outside containment. The safety duration time can increase by refilling coolant from the containment outside to integrated passive safety tanks (IPSTs). IPSS is the design for the ultimate safety in preparation for severe accidents with the loss of AC power. IPSS shall be used for the supplement of current safety systems, not the replacement.
UR - http://www.scopus.com/inward/record.url?scp=84925114761&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84925114761
T3 - International Congress on Advances in Nuclear Power Plants, ICAPP 2013: Nuclear Power - A Safe and Sustainable Choice for Green Future, Held with the 28th KAIF/KNS Annual Conference
SP - 1666
EP - 1671
BT - International Congress on Advances in Nuclear Power Plants, ICAPP 2013
PB - Korean Nuclear Society
T2 - International Congress on Advances in Nuclear Power Plants: Nuclear Power - A Safe and Sustainable Choice for Green Future, ICAPP 2013, Held with the 28th KAIF/KNS Annual Conference
Y2 - 14 April 2013 through 18 April 2013
ER -