Stefanus S. Email & Phone Number

Riau, Indonesia

Purwakarta, West Java, Indonesia

• Develop Preventive Maintenance (PM) schedules for all equipment and machinery• Create and manage work orders for maintenance tasks, assign tasks to the maintenance team and track the progress of ongoing work• Create purchase requisitions/spare parts procurement required for maintenance activities• Manage inventory levels to avoid stockouts while minimizing excess inventory and ensuring that there is no difference between the recorded stock levels and the actual stock on hand• Communicate with production, engineering, and PPIC teams to align maintenance activities with production schedules• Monitor equipment performance and maintenance records to identify trends and areas for improvement in order to generate reports on maintenance KPIs (Key Performance Indicators), such as downtime, mean time between failures (MTBF), and mean time to repair (MTTR).• Manage the document control for engineering team such as SOPs, IKs, Checklist Forms.

Sleman, Yogyakarta, Indonesia

Coordinated the research about the utility of oil waste. My focus in this research is to do the modeling of the system to look for the PID values using several methods for the instruments.• Designing the plants with team, especially for the boiler plant.• Leading the team in determining components, assembling, and programming control components such as temperature sensors, pressure sensors, and level sensor using Arduino.• Performing utility work in assembling waste-to-energy power plants.• Collecting data in a 3x3 multi-variable system with inputs consisting of pressure sensors, temperature sensors, and water level sensors, and outputs consisting of water inlet valves, steam valves, and fire valves. • Reducing interaction between variables using the decoupling method.• Modeling and tuning PID controllers using the Ziegler-Nichols method.• Simulating the design results using MATLAB Simulink.

Sleman, Yogyakarta, Indonesia

• Participated alongside the lecturer in introducing, providing understanding, and explaining to students about the features present in the Visual Studio application.• Assisted students in learning programming languages within the application.• Supported students if they encounter any issues or errors that may occur during laboratory practical work.

Dumai, Riau, Indonesia

• Assisting in checking and repairing electrical and instrumentation equipment, monitoring sensor and instrument statuses in the field connected to PLC and DCS devices in 5 different plants, such as the Me-Fract, Boiler, Refinery, FA, and PFAD.• Operated automatic control devices in the factory using PID, PLC, and DCS systems.• Delivered presentations to the team about what has been learned and the progress made during the internship in front of mentors, supervisors, and the team.

Sleman, Yogyakarta, Indonesia

• Assisting the lecturer in conducting practical sessions to provide guidance, explanations, supervision, and necessary assistance in the course of Electrical Installation and AC Electric Motor Engineering.• Assisting in repairing and performing maintenance on the equipment and components used in the laboratory work.