Improvement of a Boiler Feedwater System Using Six Sigma Analysis

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Abstract:

Industrial boiler systems are used in manufacturing plant to generate steam for the purpose of production. The current boiler feed exhibits the feedwater chemical parameters that are not consistent with the acceptable water chemistry limits. Around 60% of damages of power plant equipment occur due to deviation from the normal water chemistry. The Six Sigma DMAIC method was used to investigate and prioritize the main issues revolving around these parameters-namely Define-Measure-Analyze-Improve-Control. Based on this case study of the plant, it was found that the leading issues are that there is insufficient pretreatment to remove silica. It was found that there has been significant improvement to water quality to almost all the investigated parameters namely the Silica content, Hardness content and P-alkalinity in the water. The results of this study have proven that Six Sigma is useful in creating sustainable improvement in process in an organization.

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Periodical:

Advanced Materials Research (Volumes 912-914)

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1644-1647

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April 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] Linderman, R. S. (2003). Six Sigma: a goal-theoretic perspective. Journal of Operations Management, 21, 193–203.

DOI: 10.1016/s0272-6963(02)00087-6

Google Scholar

[2] Straub, F. G. (1939). Purification of water for boiler feed purposes. Journal of the Franklin Institute, 591–606.

DOI: 10.1016/s0016-0032(39)90587-9

Google Scholar

[3] Smith, R., & Mobley, R. K. (2008). Chapter 7 – Total Productive Maintenance. Butterworth Heinman.

Google Scholar

[4] Ghosh, H. R. (2010). Failure investigation of platen superheater tube in a 210 MW thermal power plant boiler. Trans. Indian Inst. Met., 63, 687–690.

DOI: 10.1007/s12666-010-0105-y

Google Scholar

[10] Sankar, B. P. (2001). Modified approach for prioritization of failures in a system failure mode and effects analysis. International Journal of Quality & Reliability Management, 324–336.

DOI: 10.1108/02656710110383737

Google Scholar

[5] Vidojkovica, A. O. ( 25 September 2013). Extensive feedwater quality control and monitoring concept for preventing chemistry-related failures of boiler tubes in a subcritical thermal power plant. Applied Thermal Engineering Volume 59, Issues 1–2, 683–694.

DOI: 10.1016/j.applthermaleng.2013.06.028

Google Scholar

[6] Feed Water Treatment for Industrial Boilers & Power Plants. (June 2003). Filtration & Separation Volume 40, Issue 5, , 28–29.

DOI: 10.1016/s0015-1882(03)00529-9

Google Scholar

[7] Chang, K. (2009). Evaluate the orderings of risk for failure problems using a more general RPN methodology. Microelectronics Reliability, 1586–1596.

DOI: 10.1016/j.microrel.2009.07.057

Google Scholar