Decision Making Reliability Approach for Maintainability of Economizer of Coal Based Boiler

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Authors

  • Gagan Kumar Gupta
     Assistant General Manager, BPSCL (A Joint Venture Company of SAIL & DVC), Bokaro – 827001 ,IN
  • Aditya Kashyap
     B. Tech Students, Department of Mechanical Engineering, Manipal University Jaipur – 303007, Rajasthan ,IN
  • Harpreet Singh
     B. Tech Students, Department of Mechanical Engineering, Manipal University Jaipur – 303007, Rajasthan ,IN

DOI:

https://doi.org/10.18311/jmmf/2023/35444

Keywords:

Critical Subsystems, Lognormal, Maintainability, Reliability, Trend Analysis, Weibull

Abstract

This paper investigates the maintainability of economizers of three coal-based boilers for making decision of selection of replacement or maintenance practices. A sudden failure in the economizer can result huge production loss hence, a suitable decision model is essential which provides a strong data base for making optimal decision. A practical model for making decision is developed with respect to failure/repair data of three different economizers and trend with serial correlation tests are conducted. An investigation is carried out to determine the idealized statistical probability distribution providing best fit distribution. Further their Reliability and Maintainability are calculated. The tests of trend and serial correlation show very fast increasing failure rate of economizer # 1&2 with respect to economizer # 3. The present paper highlights that the failure data of economizer # 1 and economizer # 2 follow the NHPP model with poor reliability condition which indicates that these economizers should be replaced to restore boiler system as new as. However, failure data of economizer #3 follows the Lognormal distribution with poor reliability condition which suggests to develop the Preventive Maintenance Interval (PMI) to restore the boiler system. The present model serves a strong ground to decide replacement/preventive maintenance policy for not only to economizers but also to any pressure parts of coal based boilers.

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Published

2023-11-02

How to Cite

Gupta, G. K., Kashyap, A., & Singh, H. (2023). Decision Making Reliability Approach for Maintainability of Economizer of Coal Based Boiler. Journal of Mines, Metals and Fuels, 71(9), 1250–1261. https://doi.org/10.18311/jmmf/2023/35444

Issue

Volume 71, Issue 9, September 2023

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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