"Professional assessment and an early planning are essential to reach a safe and successfully Turnaround (TA) maintenance intervention. Not limited only to the compressor parts, but all nearby auxiliary equipment, HP-piping, main-drive, even foundation can be part of the assessment and can be implemented into the TA. Consultancy Services are applied on demand, uniting old parts with new designed technology. The case study will describe a TA of the 2 compressors in a 200kTY LDPE plant including a revamp on one of the compressor. It shows scope finding and difficulties during planning, implementation of modernization, increased safety and improved design have been executed during the TA, ending up in a successful project. The proactive performing during planning- and project-execution; living of the daily work by the entire team is asked to meet the high expectations in safety, quality and TA-duration. Some guidelines and experience by Burckhardt Compression compressor manufacturer with a strong service focus. "