PROPOSED QUALITY IMPROVEMENT USING SIX SIGMA AND DAVID GARVIN APPROACH (CASE STUDY: PT. PLN (PERSERO) ELECTRICITY MAINTENANCE CENTER)

• Main Author: Talitha Kumalayanti, Ulfa
• Format: Theses
• Language: Indonesia
• Subjects: Manajemen umum
• Online Access: https://digilib.itb.ac.id/gdl/view/45571
• Institution: Institut Teknologi Bandung

PT. PLN (Persero) is obliged to provide electricity continuously, in sufficient quantities with good quality and reliability. One parent unit of PT. PLN (Persero), namely PT. PLN (Persero) Electricity Maintenance Center (Pusharlis) engaged in services, production, maintenance and repair of electrical equipment. One of the production processes carried out is the manufacture of Air Preheater (APH) products. Unfortunately, conditions that occur in production process is incompatible with the plan and a delay in the production process with difference of 37 days longer. This will result in the customer not being able to reach the energy availability target and will disrupt the maintenance cycle at other plants. The objective of this research is to identify the root problems and proposed solutions that can improve the quality. This research analyzes the production process of production only from Air Preheater products. The defect data taken is the data in 2019 on the making of Air Preheater Pelabuhan Ratu. Identification and analysis of root problems using the Current Reality Tree method. There are 3 problems that have occurred during the Air Preheater production process, Factory Acceptance Testing (FAT) prototype; dimension, number of sheets, weight; cutting process. The proposed solution using Six-Sigma and David Garvin approach. Total defect is 73 with Defects-Per-Million-Opportunities (DPMO) 1,436.611. Analyze step using Failure Mode Effect Analysis (FMEA) with highest Risk Priority Number (RPN) 280 for cutting process, followed by dimension, number of sheets, weight with RPN 240, and 168 for FAT prototype. David Garvin approach is analyzed from product quality, and the most important concern is the weight and balance of the APH. This relates to the elements in the APH product itself. Proposed solution from the root cause that has been previously analyzed are initial design checking, delivery of methods and division of tasks at the beginning before the process is carried out, human resources management, monitoring and inspection periodically, improve communication and coordination process, selection of service vendors that meet the qualifications, new machine replacement, machine maintenance and documentation periodically. From the 7 proposed solutions, can be summarized into 3 aspects which are concerns, people, monitoring / process and machine. Control plan for those improvements are develop a scheduling of the production process and the Person in Charge (PIC) that is responsible for each process, develop documentation or checklist for each production process, daily evaluation (discussion) that refers to the checklist. This research also proposed checklist and project schedule for the implementation plan is divided to 3 implementation stage, socialization, planning and execution with a length of 3 months.