Level 1 probabilistic safety assessment to support the design of the CEA 2400 MWth gas-cooled fast reactor

2010 ◽  
Vol 240 (11) ◽  
pp. 3758-3780 ◽  
Author(s):  
C. Bassi ◽  
Ph. Azria ◽  
M. Balmain
Keyword(s):  
Fast Reactor ◽  
Safety Assessment ◽  
Probabilistic Safety Assessment ◽  
Level 1 ◽  
Probabilistic Safety

Discussion on the Application of Fire Probability Safety Assessment to Sodium Cooled Fast Reactor

2013 ◽  
Author(s):  
Wei Song ◽  
Hongyi Yang ◽  
Chunming Zhang ◽  
Jiaxu Zuo
Keyword(s):  
Risk Assessment ◽  
Chemical Reactions ◽  
Fast Reactor ◽  
Safety Assessment ◽  
Fire Risk ◽  
Liquid Sodium ◽  
Reactor Safety ◽  
Probabilistic Safety Assessment ◽  
China Experimental Fast Reactor ◽  
Probabilistic Safety

As sodium cooled fast reactor (SFR) uses liquid sodium as coolant, the risk of sodium fire is brought to reactor safety, which is different from conventional fire. Sodium is very chemically active, and violent chemical reactions can happen when sodium is exposed to air or water. Sodium fire is a typical and distinctive hazard in sodium cooled fast reactors, which is probably one of the main contributors to the total reactor risk. In this paper, the methodology of fast reactor sodium fire risk assessment is studied, and the principles and procedure of sodium fire probabilistic safety assessment (PSA) are given. The application of this technology in China Experimental Fast Reactor (CEFR) is explored, and several key problems which need more research in the future during the process of sodium fire probabilistic safety assessment are discussed.

Full-Scope Probabilistic Safety Assessment of Balakovo Unit 1 in Russia

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Vladimir Morozov ◽  
Gennady Tokmachev ◽  
Rostislav Lutsuk ◽  
Sergey Kopylov
Keyword(s):  
Power Plant ◽  
Regulatory Authority ◽  
Nuclear Power ◽  
Safety Assessment ◽  
Probabilistic Safety Assessment ◽  
Commercial Operation ◽  
Level 1 ◽  
Seismic Impact ◽  
Aircraft Crash ◽  
Probabilistic Safety

The Balakovo Nuclear Power Plant operating in Russia has four operating units of a VVER-1000 type. The first unit was connected to the grid on Dec. 28, 1985, and put in commercial operation on May 23, 1986. According to modern requirements of the Russian Nuclear Regulatory Authority, the full-scope probabilistic safety assessment (PSA) must be performed to extend the license for operation beyond an initial 30-year lifetime of the unit. The paper presents the results of the Level 1 PSA covering internal initiating events for power and shutdown operational plant states, internal hazards (fires and floods), and external hazards, including natural and man-made events, in particular, seismic impact, and aircraft crash.

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