Design and implementation of a Lean Six Sigma framework for process improvement: A case study

• Published in: 2012 IEEE International Conference on Industrial Engineering and Engineering Management pp. 80 - 84
• Main Authors: Shahada, T. M., Alsyouf, I.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.12.2012
• Subjects: Analytical models; Companies; Cost benefit analysis; Data models; DEMATEL; DMAIC; Framework; Lean Six Sigma; Phase measurement; Process control; Simulation; Six sigma
• ISSN: 2157-3611
• DOI: 10.1109/IEEM.2012.6837706

The purpose of this paper is to develop a Lean Six Sigma framework according to the Six Sigma systemic process improvement methodology; Define, Measure, Analyze, Improve and Control (DMAIC). It was implemented and verified at one engineering company in UAE. The results show that the process "Make-to-Order (MTO) projects" has a long lead-time. The main causes of the long lead-time are the subcontractors, the customers, and the company-implemented procedures. Using the framework, it was possible to identify the most significant reason for the long lead-time, analyze the root-cause(s), suggest three relevant solutions and select the most preferred one. Using the framework methodology the user will have a systematic approach for continues improvement. The originality of this methodology was evident in integrating and using tools related to lean-production, six-sigma, balanced scorecard, simulation and cost benefit analysis. The framework allows the user identify the process problem(s) and solve them effectively.