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All Journal International Journal of Industrial Optimization (IJIO) Jurnal Sosial dan Teknologi
Sartika Rini
Universitas Bina Nusantara
Humanities Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice

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Implementation of lean thinking through A3 report in plastic injection company Sartika Rini
International Journal of Industrial Optimization Vol. 2 No. 1 (2021)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/ijio.v2i1.3055

Abstract

Lean thinking, or lean production, which has long been introduced by Toyota, is a process improvement concept that is carried out by eliminating waste and focusing more on things that create values. Its emergence was inspired by the fact on the production floor, where only a small fraction of the total times and efforts contributed to creating added value to customers’ final product. Lots of prior studies have shown various benefits of implementing lean production, especially in manufacturing industries. However, many companies still find difficulties trying to implement a lean approach for the first time. Furthermore, they do not have a clear and concise picture of each component of the lean approach they want to apply. This company is based on case study which has many rejected products so that it makes higher production cost. Therefore, this study proposed an implementation of lean thinking to reduce the number of rejected products through A3 report. This result show the defects can be reduced and the standard operational procedure has been developed. 
Logbook Quality Analysis at PT. Pertamina Patra Niaga Ships Using Sus and Webqual 4.0 Methods Muhamad Fitra Saputra; Budi Setiawan; Sartika Rini
Jurnal Sosial Teknologi Vol. 6 No. 5 (2026): Jurnal Sosial dan Teknologi
Publisher : CV. Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/jurnalsostech.v6i5.32809

Abstract

The APLUSAN website is a website-based application used by PT. Pertamina Patra Niaga - SHIPS workers are responsible for reporting shift handover logbooks. User satisfaction and usability testing has not occurred since the APLUSAN website was implemented. The aim of this research is analyzing the website using the Webqual 4.0 method to assess the quality of the website and the System Usability Scale (SUS) method to measure website usability at a superficial level. Researchers collected data through literature studies, observations, and questionnaires using the Saturated Sampling technique. The subjects of this study were 30 respondents from PT. Pertamina Patra Niaga - SHIPS Refueling and Operational Head division (N = 30). This study adapts quantitative analysis, including validity and reliability tests, with SPSS calculation tools. The results of the APLUSAN website increased quality, cost, delivery, safety, and morale, and also the satisfaction measurement of Webqual 4.0 indicates good quality and the System Usability Scale (SUS) method, with a score of 75.1, indicates could be accepted by PT. Pertamina Patra Niaga- SHIPS workers. Using SPSS 22 the validity & reliability test results show that all questionnaire items are valid and reliable. The APLUSAN Website has the potential for replication and could be applied in all PT. Pertamina Patra Niaga work locations. Sustainable use requires enhancing service quality based on the company's demands. Data protection against data theft must be improved, servers should be added to accommodate growing user numbers, and this website must stay current on technological advances to be relevant.
Co-Authors Budi Setiawan Muhamad Fitra Saputra