석유화학용 펌프의 출하검사에 의한 부적합 사례의 분석 및 개선방안에 관한 연구

Abstract

Pump Inspection process is divided Incoming, Intermediate, Performance, Final stage and pump manufacturers and customers commonly had interest about result of performance up to recently. But as pump models are gradually to be patterned and standardized, customers having many operating experience are concerned more exterior of pump than performance test. Moreover because customers can first identify visual condition such as appearance, dimension, painting, packing as soon as pump is delivered at the site, it is important to minimize incidence rate of nonconformity at final inspection stage. Consequently global pump manufacturers constantly effort to improve pump quality at final inspection process. As nonconformity case occurred at site is annually increasing and complicating, manufactures always realize that customer’s judgement level is higher than their criterion. And customers decide quality level of pump manufacturer according to their standard that it was designated as nonconformity even parts considered as minor points for the manufacturer. Especially because API pump was designed complex assembly structure and severe inspection criterion, various and unpredictable nonconformity factors occasionally exist at final inspection process. Therefore this thesis first counts and arranges nonconformity data detected at final inspection process for several years recently, and classify these data to eleven nonconformity cases occurred frequently, “Auxiliary Piping, Rust, Bolt/Nut, Driving, Painting, Packing, Document, Main Part, Accessary, Plugging, Auxiliary Part”, then analyze about the detailed items and main cause as per incidence rate. Finally as considering the analysing result, it will be suggested the improvement of follow-up measure & preliminary action and show cases applied actually at final inspection process of pump manufacturer. As s result, these ways will resolve many serious problem such as increase of F-Cost, delay of customer deadline, failure of customer trust.