Reliability analysis and safety model checking of Safety-Critical and control Systems: A case study of NPP control system

Kumar, Vinay; Mishra, K. C.; Singh, Pooja; Hati, Aditya Narayan; Mamdikar, Mohan Rao; Singh, Lalit Kumar; Parida, R. N. Ramakant

doi:10.1016/j.anucene.2021.108812

Cited by 13 publications

(5 citation statements)

References 10 publications

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“…Studies [27][28][29][30][31] have examined the challenges related to ensuring the safe operation of power plants from various perspectives. In these studies, the authors proposed cutting-edge information and measurement systems, smart technologies, and smart NPP concepts, along with innovative approaches to control system design and reliability assessment.…”

Section: Analysis Of Approaches To the Management Of The Safe Operati...mentioning

confidence: 99%

Approaches to Sustainable Energy Management in Ensuring Safety of Power Equipment Operation

Hrinchenko,

Koval,

Shmygol

et al. 2023

Energies

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The study considers ways to ensure the quality of the functioning of power equipment as one of the directions for ensuring the safety of energy complexes in the period of “green transformation”. Based on the analysis, it is established that for an effective “green” transformation, it is necessary to ensure the energy safety of equipment operation, which is possible by developing effective science-based approaches to technical diagnostics of the state of power systems and individual equipment. The main objective of the study is to develop a Safety Management Model for Life Term Operation of power equipment, which takes into account changes in its condition at different stages of operation and allows for the prediction of further safe operation. The paper proposes an approach to researching the technical condition of power equipment, taking into account the deformations that occur during operation. The results of the calculation of stress intensity coefficients for longitudinal and transverse-postulated cracks in different modes are presented. Based on the calculated and experimentally obtained values, an approach to predicting the operating life of power equipment with regard to changes in technical characteristics is proposed. The results of the calculations showed that by changing the allowable load on the material of the energy equipment to 35 kgf/mm2, the estimated operational lifespan could be extended until 2035, ensuring all necessary safety conditions. It has been proven that with effective management and continuous safety diagnostics, nuclear power plants have the potential to operate beyond their standard design life of up to 30–40 years. This approach allows for the quality and safe operation of power equipment in the context of the transition to sustainable energy.

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Section: Analysis Of Approaches To the Management Of The Safe Operati...mentioning

confidence: 99%

Approaches to Sustainable Energy Management in Ensuring Safety of Power Equipment Operation

Hrinchenko,

Koval,

Shmygol

et al. 2023

Energies

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“…Kim et al [19] proposed and examined a quantitative scheme to use FRAM for risk assessment by defining rules for variability propagation and aggregation. Kumar et al [20] developed a framework using a state-space model to quantify reliability in the design phase of the development life cycle to minimize the losses due to the system's failure after installation. Zhang et al [21] presented a vehicle re-identification model based on optimized DenseNet121 with joint loss, to solve the computational complexity problem caused by local attribute marking.…”

Section: Related Workmentioning

confidence: 99%

Developing Reliable Digital Healthcare Service Using Semi-Quantitative Functional Resonance Analysis

Zhou¹,

Matsubara²,

Takada³

2023

Computer Systems Science and Engineering

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Since entering the era of Industry 4.0, the concept of Healthcare 4.0 has also been put forward and explored by researchers. How to use Information Technology (IT) to better serve people's healthcare is one of the most featured emerging directions in the academic circle. An important field of Healthcare 4.0 research is the reliability engineering of healthcare service. Because healthcare systems often affect the health and even life of their users, developers must be very cautious in the design, development, and operation of these healthcare systems and services. The problems to be solved include the reliability of business process, system functions, and personal healthcare data. The Functional Resonance Analysis Method (FRAM) has been applied in reliability engineering for safety-critical systems in available studies, using both qualitative and quantitative approaches. However, the method has not been applied in the field of digital healthcare services development. Therefore, to narrow the gap, we present in this paper a semi-quantitative functional resonance analysis method to develop reliable healthcare services for diabetics. Moreover, this paper has tried to improve the reliability design of the service-oriented architecture (SOA) of traditional insulin pump therapy by system thinking.

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“…In work [3], it is noted that the failure of systems critical for safety leads to significant financial losses, a threat to people's lives, and an adverse impact on the environment. Such a critical system for safety is the feed water management system of a nuclear power plant.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Parametric synthesis of control systems for the steam generator of a nuclear power plant

Nikulina

Северин

Kotsiuba

2022

EEJET

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This paper proposes models and methods of the parametric synthesis of automatic control systems for a steam generator at a nuclear power plant, based on the modification of unconditional optimization methods. A mathematical model of steam generator control systems designed for the synthesis of model parameters has been considered. Algorithms are given for calculating level objective functions that take into consideration the limitations of variable parameters and quality indicators of problems for identifying and optimizing model parameters. The methods of unconditional optimization have been modified by introducing the operation of comparing the values of the level objective functions. Using the information technology of optimization, computational experiments were carried out to synthesize the parameters of the steam generator control systems by optimizing the level objective functions. The values of 54 parameters for the model of the control system in the PGV-1000 steam generator were identified, the value of standard deviation in the processes of 1 % from the experimental processes was achieved in the model. The result of parametric synthesis of optimal control systems for a steam generator produced a minimum control time of 131 seconds while the time of computational experiments did not exceed 10 minutes. The peculiarity of the proposed approach to the parametric synthesis of control system models is that the level objective function as a single mathematical object includes all the information about the synthesis problem. Therefore, a given approach is promising for simplifying software for solving complex problems of parametric synthesis of control systems. The considered technology of parametric synthesis of control systems could increase the degree of scientific validity of technical projects to improve various applied and promising control systems.

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Reliability analysis and safety model checking of Safety-Critical and control Systems: A case study of NPP control system

Cited by 13 publications

References 10 publications

Approaches to Sustainable Energy Management in Ensuring Safety of Power Equipment Operation

Approaches to Sustainable Energy Management in Ensuring Safety of Power Equipment Operation

Developing Reliable Digital Healthcare Service Using Semi-Quantitative Functional Resonance Analysis

Parametric synthesis of control systems for the steam generator of a nuclear power plant

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