Failures in control systems

Galluzzo, M.; Andow, P.K.

doi:10.1016/0143-8174(84)90025-8

Cited by 17 publications

(4 citation statements)

References 4 publications

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“…Из работ последних лет можно отметить [99][100][101][102][103][104]. Подробнейшее изложение метода на примере объекта химической технологии приведено в цикле из нескольких работ [105,106].…”

Section: рис 2 множество возможных интерпретаций пнг при построенииunclassified

Математические Модели, Используемые В Задачах Диагностики Технологических Систем

Тоичкин¹,

Toichkin²,

Палюх³

et al. 2015

ППС

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The paper deals with mathematical models used in the diagnostics of the technological system states: structurallogical model; causal model; state space model; interval parametric models. The problems of diagnostics states and control of technological safety of chemical production are discussed. It is shown that the core of modern management system of technological safety of chemical production, is a diagnostic system of chemical-technological process states and are some common features of the establishment and use of diagnostic systems for chemical-technological process. The conclusion about the need to build diagnostic systems based on chemical-technological process class of discrete models, which allow the analysis of the system availability under uncertainty information about diagnosed object.

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Section: рис 2 множество возможных интерпретаций пнг при построенииunclassified

Математические Модели, Используемые В Задачах Диагностики Технологических Систем

Тоичкин¹,

Toichkin²,

Палюх³

et al. 2015

ППС

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“…Numerous publications exist in the literature (Shaeiwitz et al, 1977;Chamow, 1978;Lambert, 1979;Lapp and Powers, 1979;Allen and Rao, 1980;Cummings et al, 1983;Allen, 1984;Andrews and Morgan, 1986;Andrews and Brennan, 1990). Although it has been shown in these works that the digraph-based techniques are useful in practical applications, the original method proposed by Lapp and Powers (1977) is still deficient under certain conditions (Andow, 1980(Andow, , 1981Galluzzo and Andow, 1984). Based on qualitative steady-state analysis, Chang and Hwang Correspondence concerning this article should be addressed to C.-T. Chang.…”

Section: Introductionmentioning

confidence: 96%

Prototype for intergated hazard analysis

et al. 1997

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The prototype of an integrated hazard-analysis system (IHAS) was developed. Essentially any process can be analyzed with this sofhvare if the system topology is correctly supplied by the user. Since all algorithms adopted are digraph-based, the system digraph must be constructed first with IHAS. The embedded feedfonvard and feedback loops are then identified and classified. On the basis of this information, three widely accepted hazard-assessment procedures-FTA, ETA, and HAZOP -can be peflormed automatically. From the results obtained in practical applications, one can see that the quality of hazard analysis is indeed improved if IHAS can be used as an aid to the human experts.

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“…proposed a signal‐flow graph‐based technique for failure mode analysis of complicated systems with control loops. A software package of Dynamic Logical Analytical Methodology (DYLAM) is developed by A. Amendola, et al 19 . for event sequence and consequence analysis in earlier 1980s.…”

Section: Introductionmentioning

confidence: 99%

“…H. Kumamoto, et al 18 proposed a signal-flow graph-based technique for failure mode analysis of complicated systems with control loops. A software package of Dynamic Logical Analytical Methodology (DYLAM) is developed by A. Amendola, et al 19 for event sequence and consequence analysis in earlier 1980s. S. Guarro and D. Okrent 20 proposed a logic flowgraph approach to process failure modeling for use in a diagnosis-oriented disturbance analysis system.…”

Section: Introductionmentioning

confidence: 99%

A hybrid computing framework for risk‐oriented reliability analysis in dynamic PSA context: A case study

Jiang

et al. 2022

Quality & Reliability Eng

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Nowadays, the emerging digital technologies and digitalization trend in safety‐critical industrial process systems are bringing great opportunities for system performance improvements. However, new big challenges are also encountered in the reliability and safety evaluation of large complex industrial process systems due to its multi‐state, multi‐phase dynamic interactions, resilience on software and inter‐dependencies among digital components. The objectives of this study are i) to present an introductory overview of a hybrid computing framework as a supplementary to conventional fault tree analysis toolkit for risk‐oriented reliability analysis in dynamic probabilistic safety assessment context; ii) to illustrate how to combine the three methods of DDET, Markov/CCMT, and GO‐FLOW for integrated risk solutions by a case study of small‐break LOCA in nuclear power plants. Within the hybrid computing framework, the DDET model is implemented based on graph‐based search and sequence diagram refactoring by linking with Markov/CCMT and GO‐FLOW solver for branch probability estimation. The dynamic event tree model is adopted to represent the accident sequence of small‐break LOCA, where the heading events of system failure of digital RPS and phased‐mission ECCS in realization of safety‐critical functions of reactivity control and emergency core cooling are respectively modeled and analyzed by Markov chain and GO‐FLOW method. The demonstration results show that the failure analysis of complex dynamic process interactions together with time‐dependent mission reliability analysis of safety systems involved in accident prevention and mitigation can be easily implemented with accurate modeling and fast evaluation within the hybrid integration platform. The core algorithms and principles implemented for dynamic risk scenarios development by DDET, modeling, and analysis of dynamic process interactions by Markov/CCMT, time‐dependent and multi‐phase mission reliability analysis by GO‐FLOW as well as their integration to provide comprehensive solutions for the application of dynamic reliability in risk assessment are also discussed as open problems for future research.

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Failures in control systems

Cited by 17 publications

References 4 publications

Математические Модели, Используемые В Задачах Диагностики Технологических Систем

Математические Модели, Используемые В Задачах Диагностики Технологических Систем

Prototype for intergated hazard analysis

A hybrid computing framework for risk‐oriented reliability analysis in dynamic PSA context: A case study

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