Analisis Pengendalian Mutu Minyak Sawit dengan Metode Statistical Quality Control di Pks Pagar Merbau Ptpn 2

Abstract

Crude Palm Oil (CPO) is an excellent product of Indonesian plantation. The quality standars of CPO must be required of each production process. The quality requirements consisted of free fatty acid content is less than 3.50%, moisture content is less than 0.15%, impurities is less than 0.02%. This research was conducted to produce a control chart that can be used as a standard to establish the limit of quality control product and to find out whereas the product is at in a good specification. Furthermore, this study also aim to sought the factors that cause deterioration and its fulfillment. Statistical Quality Control is a statistical technique that used to ensure that the process was fulfilled to the standard qualified. This method was applied to supervise the standards, determine the measurements, and to improve the production. X and R control chart is used as the main quality control tool. Firstly, CPO quality value for free fatty acid is 3.26% - 4.10%, moisture content is 0.187% - 0.194%, and then impurities is 0.0168% - 0.0183%. In addition, CPO quality value for the concentration of free fatty acid and moisture content need to evaluated since it was out of the specification. Therefore, the value of free fatty acid content become 3.22% - 3.46% and for the moisture content become 0.106% - 0.151%. The Cpk value is used to determine whether the product confirms specifications. The initial value for free fatty acid content, moisture content, and impurities are -0.42, -11.3, and 2.64 respectively. The value of free fatty acid content and moisture content should be evaluated as un-satisfaction, so the values of Cpk levels become 1.19 and 1.29. This condition indicates that the process ability to generating product meet the standards and suitable with index is more than 1