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Journal : Journal of Social Science

Defect Reduction Analysis to Improve Glass Bottle Packaging Products Quality Using Statistical Process Control (SPC) at PT. Muliaglass Container (MGC) Tukhas Shilul Imaroh; Ali Mustofa
Journal of Social Science Vol. 3 No. 5 (2022): Journal of Social Science
Publisher : Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (833.718 KB) | DOI: 10.46799/jss.v3i5.402

Abstract

Quality plays an important role, problems in the number of defects in production cause a decrease in quality. To prevent this increase in defective products, it is necessary to evaluate the most types of defects to determine the causes of defects so that corrective actions are obtained using statistical process control (SPC) methods and with 3 Pareto diagram controllers, control charts and fishbones. This research is intended to explore facts about Defect Reduction Through Statistical Process Control (SPC) for Product Quality Improvement and Supervision and to help determine the views on reducing the number of defects in products so as to increase the target of good product quality. The implementation of the results of this study shows a fairly good reduction in production defects based on the calculation results, namely before repairs from January to March 2021 total sales are 550,962 pc and after repairs in January to March 2022 a total of 496,260 pc so there is a decrease of 10% (54,702 pc). ) with a cost saving value of Rp. 59,318,001/mon.
The Effect of Prevention Aspects, Assessment Aspects, Internal Failure Aspects, and External Failure Aspects on the Benefits of Construction Company Projects Gunaldi Gunaldi; Tukhas Shilul Imaroh
Journal of Social Science Vol. 3 No. 5 (2022): Journal of Social Science
Publisher : Syntax Corporation Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (361.75 KB) | DOI: 10.46799/jss.v3i5.403

Abstract

Several construction projects of PT. Wijaya Karya (Persero) Tbk. experienced many records of product deviations that required repairs to be accepted by the employer. Quality costs (prevention costs, costs, internal failure costs, and external failures) planned by project management are still low on average 1% - 2%. The decline in profit in the last 3 years, namely from 2019 to 2021, is very likely due to the cost of repairs due to poor quality. This study aims to determine the effect of prevention, appraisal, internal failure, and external failure costs on the profitability of construction company projects. The population of this research is construction company employees who have managerial positions, with a total sample of 50 people. The analytical method used in this research is multiple linear regression analysis using the SPSS computer program. The results of the study found that prevention costs, appraisal costs, internal failure costs, and external failure costs had an effect both individually and simultaneously on the profitability of construction company projects.