Five terms beginning with "S" utilized to create a workplace suited for visual control and lean production. Seiri means to separate needed tools, parts, and instructions from unneeded materials and to remove the latter. Seiton means to neatly arrange and identify parts and tools for ease of use. Seiso means to conduct a cleanup campaign. Seiketsu means to conduct seiri, seiton, and seiso at frequent, indeed daily, intervals to maintain a workplace in perfect condition. Shitsuke means to form the habit of always following the first four Ss.
