Integrating VSM and OEE: A framework for analyzing lean wastes and OEE losses enabling digitalization of production systems

This study integrates Value Stream Mapping (VSM) and the Overall Equipment Effectiveness (OEE) and covers a critical research gap by exploring the relationship between lean wastes and OEE losses. VSM allows a view of the stream and a clear identification of the lean wastes. The OEE allows an in-depth view into the inefficiencies in operating equipment and the associated losses. Through a focused analysis of lean wastes and OEE losses followed by the investigation of their interconnections, the study provides guidance for system improvements. A new frame is constructed combining the VSM view and the OEE view. Subsequently, waste analysis, bottleneck analysis, and losses analysis are located on a novel map depicting an approach for enabling improvements within a system view. Based on the established connections between the wastes and losses, foundations for handling several system improvement project types are provided. A system improvement digitalization structure is introduced, and the related network is drafted. Accordingly, the digitalization of the identified lean improvement projects is outlined. The outcomes of the study compose a framework for analyzing lean wastes and OEE losses enabling digitalization of production systems. This work lays a foundation for future research and guides practical implementations.