The main thrust of this paper is to design optimum cost procedure for skip lot sampling plan of type SkSP-2 and SkSP-3 with single sampling as reference plan using GERT techniques. This favors producer as well as consumer. Simulation has been done and tables are constructed for various iterations of parameters of SkSP-2 and SkSP-3 with single sampling plan.

Tightened-normal-tightened (TNT) plans are the most useful plans in compliance sampling especially for safety related products. In this scenario the acceptance number zero is desirable. This paper provides the feasible costs model considering the stochastic transition of states while inspecting or in various costs involved in the destructive and non-destructive testing. It reveals the cost behavior with respect to plan parameters through sensitivity analysis and cost curves deals with determining the optimal plan parameters for certain attribute sampling schemes.