This book presents results of projects carried out by both scientific and industry researchers into the techniques to help in maintenance, control, supervision and security of systems, taking into account the technical environmental and human factors. This work is supported by the Scientific Group GIS 3SGS. It is a collaborative work from 13 partners (academic and industrial) who have come together to deal with security problems. The problems and techniques discussed mainly focus on stochastic and dynamic modeling, maintenance, forecasting, diagnosis, reliability, performance, organizational, human and environmental factors, uncertainty and experience feedback. Part 1. Industrial Issues 1. Safety and Performance of Electricity Production Facilities, Gilles Deleuze, Jean Primet, Philippe Klein, Carole Duval and Antoine Despujols. 2. Monitoring of Radioactive Waste Disposal Cells in Deep Geological Formation, Stephane Buschaert and Sylvie Lesoille. 3. Towards Fourth-generation Nuclear Reactors, Jean-Philippe Nabot, Olivier Gastaldi, Francois Baque, Kevin Paumel and Jean-Philippe Jeannot. Part 2. Supervison and Modeling of Complex Systems 4. Fault-tolerant Data-fusion Method: Application on Platoon Vehicle Localization, Maan El Badaoui El Najiar, Cherif Smaili, Francois Charpillet, Denis Pomorski and Mireille Bayart. 5. Damage and Forecast Modeling, Anne Barros, Eric Levrat, Mitra Fouladirad, Khanh Le Son, Thomas Ruin, Benoit Iung, Alexandre Voisin, Maxime Monnin, Antoine Despujols, Emmanuel Remy and Ludovic Benetrix. 6. Diagnosis of Systems with Multiple Operating Modes, Taha Boukhobza, Frederic Hamelin, Benoit Marx, Gilles Mourot, Anca Maria Nagy, Jose Ragot, Djemal Eddine Chouaib Belkhiat, Kevin Guelton, Dalel Jabri, Noureddine Manamanni, Sinuhe Martinez, Nadhir Messai, Vincent Cocquempot, Assia Hakem, Komi Midzodzi Pekpe, Talel Zouari, Michael Defoort, Mohammed Djemai and Jeremy Van Gorp. 7. Multitask Learning for the Diagnosis of Machine Fleet, Xiyan He, Gilles Mourot, Didier Maquin, Jose Ragot, Pierre Beauseroy, Andre Smolarz and Edith Grall-Maes. 8. The APPRODYN Project: Dynamic Reliability Approaches to Modeling Critical Systems, Jean-Francois Aubry, Genia Babykina, Nicolae Brinzei, Slimane Medjaher, Anne Barros, Christophe Berenguer, Antoine Grall, Yves Langeron, Danh Ngoc Nguyen, Gilles Deleuze, Benoite De Saporta, Francois Dufour and Huilong Zhang. Part 3. Characterizing Background Noise, Identifying Characteristic Signatures in Test Cases and Detecting Noise Reactors 9. Aims, Context and Type of Signals Studied, Francois Baque, Olivier Descombin, Olivier Gastaldi and Yves Vandenboomgaerde. 10. Detection/Classification of Argon and Water Injections into Sodium into an SG of a Fast Neutron Reactor, Pierre Beauseroy, Edith Grall-Maes and Igor Nikiforov. 11. A Dynamic Learning-based Approach to the Surveillance and Monitoring of Steam Generators in Prototype Fast Reactors, Laurent Hartert, Moamar Sayed-Mouchaweh and Danielle Nuzillard. 12. SVM Time-Frequency Classification for the Detection of Injection States, Simon Henrot, El-Hadi Djermoune and David Brie. 13. Time and Frequency Domain Approaches for the Characterization of Injection States, Jean-Philippe Cassar and Komi Midzodzi Pekpe. Part 4. Human, Organizational and Environmental Factors in Risk Analysis 14. Risk Analysis and Management in Systems Integrating Technical, Human, Organizational and Environmental Aspects, Geoffrey Fallet-Fidry, Carole Duval, Christophe Simon, Eric Levrat, Philippe Weber and Benoit Iung. 15. Integrating Human and Organizational Factors into the BCD Risk Analysis Model: An Influence Diagram-based approach, Karima Sedki, Philippe Polet and Frederic Vanderhaegen.