Probabilistic analysis of a 3-unit induced draft fan system with one warm standby with priority to repair of the unit in working state

Naithani, Anjali; Parashar, Bhupender; Bhatia, Pradeep Kumar; Taneja, Gulshan

doi:10.1007/s13198-017-0608-6

Cited by 13 publications

(7 citation statements)

References 3 publications

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“…) Taking Laplace Stieltjes transform of equations (32)(33)(34)(35)(36) and solving for ϕ 0 * * (s), we get equation ( 37)…”

Section: Mathematical Analysismentioning

confidence: 99%

“…Sharma & Kaur [34] presented cost benefit analysis of a compressor standby system with preference of service, repair and replacement is given to recently failed unit. Recently, Naithani et al [35] discussed probabilistic analysis of a 3-unit induced draft fan system with one warm standby with priority to repair of the unit in working state. Taj et al [36]- [37] further explored the methodology to analyze two different subsystems of a cable plant and obtained reliability indices of interest.…”

Section: Introductionmentioning

confidence: 99%

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Probabilistic Modeling And Analysis of A Cable Plant Subsystem With Priority To Repair Over Preventive Maintenance

Taj¹,

Rizwan

Alkali³

et al. 2017

JMAT

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The paper presents probabilistic modeling and analysis of a cable plant subsystem with two identical machines operating in parallel. Seven years failure data of the cable plant depicts three types of maintenances for the subsystem: repair, minor preventive maintenance and major preventive maintenance. The subsystem undergoes repair upon failure while minor and major preventive maintenance is performed as per schedule. Priority is given to repair over preventive maintenance. Mean time to failure, availability, expected busy period and expected number of repairs have been estimated by analyzing the subsystem using semi Markov process and regenerative point technique. Graphs have been established to demonstrate simulated results.

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“…) Taking Laplace Stieltjes transform of equations (32)(33)(34)(35)(36) and solving for ϕ 0 * * (s), we get equation ( 37)…”

Section: Mathematical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Probabilistic Modeling And Analysis of A Cable Plant Subsystem With Priority To Repair Over Preventive Maintenance

Taj¹,

Rizwan

Alkali³

et al. 2017

JMAT

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show abstract

“…Zhu et al 19 optimized standby system design by considering various costs. On the other hand, the multivalued decision diagram (MDD) has also been widely applied in designing standby systems, e.g., Zhai et al, 20 Jia et al, 21 and Naithani et al 22 made use of semi-Markov model and regenerative point technique to evaluate the reliability of standby systems. Finally, the multivalued decision diagram (MDD) and the multistate decision diagram (MSDD) have been utilized in numerous studies, e.g., Amari et al, 23 Jia et al 24 and Ruan and Lin, 25 etc., for assessing the reliability of standby systems.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Modeling and Optimization of Standby Mechanisms in Continuous Chemical Plants

Chang

2023

Ind. Eng. Chem. Res.

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In a continuously operated chemical plant, not only the critical unit may fail after a long period of operation, but also its process load may vary from time to time. Thus, it is necessary to incorporate standby mechanisms to maintain uninterrupted production and also satisfy the unexpected increases/decreases in external demands throughout the operation horizon. Although a few related studies were reported in the literature, a comprehensive analysis of multilayer standby mechanisms in continuous processes still has not been carried out. To address this need, a generalized mathematical programming model has been constructed in this work to automatically synthesize the optimal designs and maintenance policies of the standbys for any continuous process by minimizing the total expected lifecycle expenditure. A MATLAB code has been developed to execute the optimization runs via genetic algorithm. The feasibility and effectiveness of the proposed model and solution method are demonstrated in this paper with case studies concerning the pump systems in a typical chemical plant. From the optimization results, one can obtain proper design specifications of the standby mechanisms, which include: (1) the number of protection layers (or online warm standbys) and the number of cold standbys stored offline; (2) the numbers of installed sensors in each measurement channel, the corresponding voting-gate logic, and their spares; and (3) the inspection interval of switch and the number of its spares.

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“…Rizwan et al (2013) presented a reliability analysis of a sevenunit desalination plant with shutdown during the winter season. Various authors like Singh and Taneja (2014) and Naithani et al (2017) have worked on the performance enhancement of the system subjected to different constraints. Sharma and Kaur (2016) have studied a two-unit standby system with an essential unit generator that increased its availability.…”

Section: Introductionmentioning

confidence: 99%

Reliability analysis of captive power plant system where the working of standby unit depends on connecting unit

Sharma¹,

Singh²

2022

Int. j. adv. appl. sci.

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Captive power plants usually operate parallel to the gridline to overcome the losses associated with power failures. While the connectivity of the power plant and gridline highly depends on the functioning of the electrical breaker. This study reveals the importance of connecting device breakers in a captive power plant to operate the system at full or reduced capacity and safer it from reverse feeding. Using semi-Markov processes reliability model is developed for steam turbine generators interconnected with gridline by an electric breaker. The expressions are formed for reliability measures like mean time to system failure, availability, busy period, and profit using regenerative point techniques. Also, these measures are evaluated numerically using an actual dataset belonging to a captive power plant. Graphical plotting shows a decline in profit with increasing the failure rates of turbine generators, gridline, and working probability of breaker. The revenue per unit uptime of the system is forecasted to get productive profit with different failure rates of the power generator.

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Probabilistic analysis of a 3-unit induced draft fan system with one warm standby with priority to repair of the unit in working state

Cited by 13 publications

References 3 publications

Probabilistic Modeling And Analysis of A Cable Plant Subsystem With Priority To Repair Over Preventive Maintenance

Probabilistic Modeling And Analysis of A Cable Plant Subsystem With Priority To Repair Over Preventive Maintenance

Comprehensive Modeling and Optimization of Standby Mechanisms in Continuous Chemical Plants

Reliability analysis of captive power plant system where the working of standby unit depends on connecting unit

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