CONSTRUCTION OF MIXED SAMPLING PLANS INDEXED THROUGH SIX SIGMA QUALITY LEVELS WITH TNT-(n1, n2; C) PLAN AS ATTRIBUTE PLAN

Six Sigma is a concept, a process, a measurement, a tool, a quality philosophy, a culture and a management strategy for the improvement in the system of an organization, in order to reduce wastages and increase the profit to the management and satisfaction to the customers. Six Sigma is a business improvement approach and management philosophy that seeks to find and remove causes of defects/errors in management processes by focusing on customer requirements, processes, and outputs that are of critical importance to constituent Six Sigma to be “a program for the near-elimination of defects from every product, process and transaction. Six Sigma is a strategic weapon that works across all processes, products, company functions and industries. Motorola [1] first adopted the concept of six sigma in their organization and established that it can produce less than 3.4 defects per million opportunities. Focusing on reduction of defects will result in more profit to the producer and enhanced satisfaction for the consumer. The concept of Six Sigma can be applied in the process of quality control in general and Acceptance sampling in particular. In this paper a procedure for the construction and selection of Mixed Sampling Plan indexed through Six Sigma Quality level having Tightened – Normal – Tightened plan of the type TNT-(n1, n2; c) plan as attribute plan is presented. The plans are constructed using SSQL-1 and SSQL-2 as indexing parameters. Tables are constructed for easy selection of the plan.