5S Seiketsu (Standardize) and Visual Management
The fourth step in the lean 5S (6S) process is seiketsu, or standardized. Standardize is fundamentally about establishing clear, unambiguous norms for people to perform. Standards are a prerequisite for continuous improvement. As Taiichi Ohno, the father of the Toyota Production System (TPS) put it, “Where there is no standard, there can be no improvement.”