Evaluation of value stream mapping in manufacturing system redesign

The value stream mapping (VSM) technique, developed within the lean production paradigm, was presented as an innovative graphic technique to help practitioners redesign production systems. This paper presents the results of a project whose main purpose is to evaluate the real applicability of VSM to redesign disconnected flow lines based on manufacturing environments with a diversity of logistical problems. The research was developed using multiple case study methodology in six industrial companies. The experiences have served to highlight the following results: (1) the validity of VSM as a redesign tool is confirmed; (2) resources required for the application process are established; and (3) the differences between theoretical concepts proposed by VSM and their real-world practical applications are indicated and analyzed. These results have led to conclusions relating to: (1) communication solutions for practitioners to obtain maximum efficiency when using VSM; and (2) definitions of theoretical development points for VSM to become a reference among redesign techniques.