1st year project proposal slide

1. Resilience Engineering
Research Group
Probabilistic Risk Assessment of Ageing Nuclear
Power Plants
Omar Hadri - 2016
Pressurized Water Reactor System 1
1. Oliveira, M.V. and Almeida, J.C.S. (2013). Application of artificial intelligence techniques in modeling and control of a nuclear power plant pressurizer system. Progress in Nuclear Energy, 63, 71–85.
2. NRC (1984). Precursors to Potential Severe Core Damage Accidents: 1969–1979. NUREG/CR-4674.
3. Li, Y.F., Zio, E., Lin, Y.H., and Kumar, M. (2012). Petri-Net Simulation Model of a Nuclear Component Degradation Process. PSAM11 & ESREL 2012, Finland, 1-10.
4. Tavana, M. (2008). Dynamic process modelling using Petri nets with applications to nuclear power plant emergency management. International Journal of Simulation and Process Modelling, 4 (2), 130.
5. Németh, E., Bartha, T., Fazekas, C., and Hangos, K.M. (2009). Verification of a primary-to-secondary leaking safety procedure in a nuclear power plant using coloured Petri nets. Reliability Engineering and System Safety, 94 (5), 942–953.
Emergency Management
Decision Trees 4
Petri Net Model of
Degradation Process 3
Event Tree of
Initiating Events 2 Coloured Petri Net 5
 Introduction: With the ageing of nuclear plants, there are growing concerns
regarding the reliability of existing asset management policies. As the
performance of the system decreases with time, it is vital to incorporate these
changes into the risk analysis, especially for systems of this importance.
 Research Aim: To identify optimal asset management strategies for existing
and future NPPs in light of the degradation phenomena.
 Proposed Approach: Coloured Petri Nets have been identified as a tool to
tidily model the dynamic behaviour of the plant’s systems.
 Future Work: Build the CPN model and incorporate the currently used event
trees, degradation models and operational and management decision trees.