Abstract
Quality is one of the issues that requires special attention in the operation of a company since it can affect the relationship between producers and consumers as well as reduce the company’s losses. PT. Z is a company that mainly produces Crude Palm Oil (CPO) and Palm Kernel Oil (PKO). The problem that often occurs in this factory is that the quality of processed palm kernel is under the set standard of the company, especially palm kernel products, resulting in a loss for the company indirectly. To minimize the loss, the quality control must be conducted. The purpose of this research is to control the quality of palm kernel by using individual moving range (I-MR) chart. From the research result, it is found that the level of impurities in the palm kernel products still require control because the value was above the company's provision which is ≤ 6 while the research result was > 6.
Highlights
Quality is one of the most important issues in a company because the quality can change the relationship between producers and consumers and can reduce the company's losses
The measurement data was conducted based on observations made in the laboratory for the dirt content(%), water content (%) and the ALB content (%) of palm kernel oil for 30 days
Based on the the results of the discussion, it is found out that the value of dirt content was above the upper control limit (UCL)so it must be revised twice by eliminating the data causing the out-of-control condition so that the remaining data in the test of quality variability condition is 28 data with the result of UCL = 6 . 66, CL = 6.39 and LCL = 5.97
Summary
Quality is one of the most important issues in a company because the quality can change the relationship between producers and consumers and can reduce the company's losses. The problem that often occurs in the palm oil factory is the palm kernel processing is still below the company standard, resulting in losses for the company indirectly. This standard includes definition, terms, classification, quality requirements, sampling methods, test, marking conditions, and packaging method[1][2]. Good quality according to the producer is if the product produced by the company has been in accordance with the specifications that have been set by the company, while for consumers, good quality is when the products are in accordance with what they expect, have benefits that match their needs and equivalent with the amount of money they have spent for the products. Suyadi Prawirosentono states that quality of a product is "the physical state, function, and nature of a product that can meet the taste and the needs of the consumers satisfactorily according to the amount of money that has been spent [5]
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