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Performability and maintenance decisions for coal ash handling system of a subcritical thermal power plant

Author

Listed:
  • Subhash Malik

    (NIT Kurukshetra
    MMDU)

  • P. C. Tewari

    (NIT Kurukshetra)

Abstract

The current paper reveals the performability and maintenance decisions for the Coal Ash Handling System (CAHS) of a subcritical Thermal Power Plant (TPP). This system comprises of five subsystems i.e. Furnace, Electro Static Precipitator (ESP), Vessel, Compressor Transportation Line (CTL) and Ash Silo. Transition diagram was formulated on the basis of probabilistic approach for various subsystems. Performability model was developed through the summation of state probabilities by using the normalizing condition. Performability matrices were obtained by the numerous actions of repair and failure rates for all five subsystems. The performance for all five subsystems was estimated in the form of availability given in performability matrices. The maintenance decisions of various subsystems for CAHS are specified with the help of repair rate. It is clearly predicited from this study that ESP is most critical and ash silo is a least critical subsystem. ESP will be held on uppermost position and ash silo on lowermost position, whenever compelling the maintenance priority. The implementation of both performability and maintenance decisions by the administration of a subcritical TPP will lead to improve the system performability and reduce the total maintenance cost.

Suggested Citation

  • Subhash Malik & P. C. Tewari, 2023. "Performability and maintenance decisions for coal ash handling system of a subcritical thermal power plant," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 14(1), pages 45-54, February.
    • Handle: RePEc:spr:ijsaem:v:14:y:2023:i:1:d:10.1007_s13198-021-01097-9
    DOI: 10.1007/s13198-021-01097-9
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    References listed on IDEAS

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    1. Savita Garg & Jai Singh & D.V. Singh, 2010. "Availability and maintenance scheduling of a repairable block-board manufacturing system," International Journal of Reliability and Safety, Inderscience Enterprises Ltd, vol. 4(1), pages 104-118.
    2. Monika Gahlot & V.V. Singh & Hamisu Ismial Ayagi & C.K. Goel, 2018. "Performance assessment of repairable system in series configuration under different types of failure and repair policies using copula linguistics," International Journal of Reliability and Safety, Inderscience Enterprises Ltd, vol. 12(4), pages 348-363.
    3. Amit Kumar & Vinod Kumar & Vikas Modgil, 2018. "Performance optimisation for ethanol manufacturing system of distillery plant using particle swarm optimisation algorithm," International Journal of Intelligent Enterprise, Inderscience Enterprises Ltd, vol. 5(4), pages 345-364.
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