Друковані видання
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Browsing Друковані видання by Author "Andrashov, A."
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Item Modelling and Safety Assessment of Programmable Platform Based Information and Control Systems Considering Hidden Physical and Design Faults(2019) Kharchenko, V.; Ponochovnyi, Y. L.; Andrashov, A.; Brezhniev, E.; Bulba, E.; Поночовний, Юрій ЛеонідовичItem Multi-Fragmental Markov Models of Information and Control Systems Safety Considering Elimination of Hardware-Software Faults(2019) Kharchenko, V.; Ponochovnyi, Y. L.; Boyarchuk, A.; Andrashov, A.; Поночовний, Юрій ЛеонідовичItem Multi-fragmental Markov’s Models for Safety Assessment of NPP I&C System Considering Migration of Hidden Failures(2019) Kharchenko, V.; Ponochovnyi, Y. L.; Boyarchuk, A.; Andrashov, A.; Rudenko, I.; Поночовний, Юрій ЛеонідовичThe information and control systems of Nuclear Power Plant and other safety critical systems are considered as a set of three independent hard-ware channels including online testing system. Nuclear Power Plant information and control systems design on programmable platforms Vemodel of the life cycle. Safety and availa assessed using Markov and multfragmental models. The mult-fragmental model MICS32 contains an absorbing state in case of hidden faults and allows luating risks of “hidden” unavailability. The MICS42 model “migration” of states with undetected failures into states with detected faults. These models describe the functioning of the system and the complete elimi-nation of software faults. Results of multi-fragmental modeling are compared to evaluate proof test period taking into account requirements for SIL3 level and limiting values of hidden fault probabilities. Multi-fragment models are included in the assessing method of implementation safety requirements of ICS on pro-grammable platforms. The information technology of decision support in assessing and managing the implementation of the requirements for ICS safety is also considered.