IMPLEMENTATION X AND R CONTROL CHART AT PT. GRAND TEXTILE INDUSTRY
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Date
2009-12-10
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Universitas Widyatama
Abstract
It can be known by using of the X and R control charts a limitation of quality control for permitted or
standardized yarn uneveness. After data processing of quality control by Trial Control Limit method,
where preceeding period is made use as reference of quality limitation that would be implemented
on succeeding period. It is obtained a control limit for RSCD7T yarn unevenness as 8.990.45 (in %
units). After its implementation on succeeding period, then it was understood that there are still
some data out of control limit that is furthermore analyzed. Results of analysis show that product
possibility to defect is 8.13% from total production, consequently it is necessary to make any
corrective action, and such correction must be conducted on Engineering Department, Human
Resource Department, Production (Scheduling) Department, Raw Material QC Department, and
Department of Facility.
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Keywords
Quality, X and R Quality Charts