Maintaining product quality and identifying deviations in the event of their occurrence is one of the most important topics in industry, as it forms the basis for the success and continuity of an industrial project. This study aims to measure and analyze the production capacity of the process and monitor the quality of the processes through its indicators. It also aims to identify and diagnose the causes of deviations in production capacity through the quality control process and address the causes of these deviations. The study followed a descriptive-analytical approach as a scientific method to arrive at its findings. Researchers selected a detergent manufacturing company as a sample for the study, given the product's importance in daily life and its constant demand. Data were collected through field observations, a review of production records, and interviews with production managers. The researchers used statistical control charts and graphical results to determine the extent of process deviation. The study found that the Cp value was 3.03, while the Cpk index was 2.99, indicating that the process mean was far from the target, leading to process variation. The study recommended that tolerance limits should be reduced, as setting large tolerance limits for the manufactured product (±15) affects process quality.
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