Indian Streams Research Journal

Volume : V, Issue : III, April - 2015

APPLICATION OF SIX SIGMA TO REDUCE “EXCESS PENETRATION” DEFECTS IN GTAW PROCESS OF A NUCLEAR PIPING INSTALLATION

G. Shanmuga Raman, B.Venkatraman

DOI : 10.9780/22307850, By : Laxmi Book Publication

Abstract :

Six Sigma is a powerful business strategy that employs a disciplined approach to tackle process variability using the application of statistical and non-statistical tools and techniques in a rigorous manner. This paper explains the implementation of Six Sigma for reduction of GTAW defect “Excess Penetration” (EP) in the nuclear piping facility of a nuclear research organization in India. The study aimed at verifying the applicability of Six Sigma in a non-mass manufacturing process like GTAW of ss pipes. This study has deployed DMAIC (Define-Measure-Analyze-Improve-Control) methodology for finding a solution to the high rate of “Excess Penetration” weld defects in GTAW of ss pipes. The study identifies variation in “welders’ skill and practice” as the root cause for “Excess Penetration” defects.

Keywords :

• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration
• Six Sigma
• DMAIC
• DPMO
• GTAW
• Weld Defects
• Extra Penetration

Article :

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References :

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144. Harry, M. J; Schroder, R; (2000), “Six Sigma; The Breakthrough Management Strategy revolutionizing the world’s top Corporations”, Doubleday, New York.
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148. Andersson, R., Eriksson, H. and Torstensson, H. (2006), “Similarities and differences between TQM, Six Sigma and lean”, The TQM Magazine, Vol. 18 No. 3, pp. 282-96.

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