Developing a skip–lot zero defect sampling plan: what are the main issues?. (4th August 2014)

• Record Type: Journal Article
• Authors: Crossfield, R.T.; Dale, B.G.
• Is Part Of: International journal of vehicle design. Volume 12:Number 5/6(1991)
• Page Start: 489
• Page End: 501
• Publication Date: 2014-08-04
• Subjects: acceptable quality levels -- goods received notes -- sample size -- skip–lot -- zero defects -- sampling planning -- automobile industry -- automotive inspection; Motor vehicles -- Design and construction -- Periodicals; 629.231
• Languages: English
• ISSNs: 0143-3369

Abstract

This paper outlines the main findings of work carried out in the development and application of a combined skip–lot and zero defect sampling plan in first–line supplier of a high integrity product to the motor industry. Amongst the outcomes are: this type of sampling plan has proved to be an effective means of reducing the inspection of not only incoming goods but also on parts produced on the host company's internal manufacturing processes; some 60% of the host company's supplier plans were able to go immediately onto this plan: in–house controls on supplied plans should be reduced in a gradual manner; and the plan must be supported by the use of SPC, FMEA and supplier development activities. It is also pointed out that: supplier controls, supplier education, identification and monitoring of supplied material, and customer–supplier communication links are key features, along with supplier performance, which determines the rate at which inspection activities can be removed from incoming batches of product.