3s

3S is a term used in various fields, most often in workplace organization and lean management, to denote a three-part framework. In many manufacturing and office environments, 3S refers to the first three steps of the broader 5S system: Seiri (Sort), Seiton (Set in order), and Seiso (Shine). These steps are commonly described in English as Sort, Set in order, and Shine, though some sources use alternative English phrasing such as Sort, Straighten, and Shine.

Sort involves identifying and removing unnecessary items from the workspace to reduce clutter and free up space. Set in order focuses on organizing the remaining items so they are easy to locate and access, often through labeling, standard placement, and orderly storage. Shine emphasizes cleaning the area and equipment and inspecting for hazards or abnormalities to maintain a safe and functional environment. In some literature, 3S is described as Sort, Straighten, and Sweep/Shine, reflecting variations in terminology across industries and languages.

3S is frequently presented as the foundation of the broader 5S program, where Standardize and Sustain are added to form a sustained continuous-improvement process. Effective 3S implementation typically involves baseline audits, visual management, simple checklists, daily 5-minute routines, and ongoing management support to ensure enduring discipline.

Outside of lean contexts, 3S can appear as an acronym in unrelated programs or brands, and its meaning may vary by organization. When encountered, it is best understood from the specific context in which it is used.