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S (Lean Glossary)

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SCOR Model: Supply Chain Management Model developed & modified in the USA, by the Supply Chain Council, USA.

SDCA Cycle: Standardize, Do, Check, Act, the basic steps to be followed to sustain the current stage.

Seiketsu: 4th S in the 5S Technique meaning to 'standardize'.

Seiso: 3rd S in the 5S Technique meaning to 'Clean' (Spic & Span).

Seiton: 2nd S in the 5S Technique meaning to 'Organize'.

Seiri: 1st S in the 5S technique meaning to 'Sort'.

Shitsuke: 5th S in the 5S technique to mean 'Self Discipline'.

Self-inspection: An inspection performed by the operator at his own work station or area.

Sensei: An outside master or teacher that assists in implementing lean practices.

Sequential Changeover: Also sequential set-up. When changeover times are within Takt time, changeovers can be performed one after another in a flow line. Sequential changeover assures that the lost time for each process in the line is minimized to one Takt beat. A set-up team or expert follows the operator, so that by the time the operator has made one round of the flow line (at Takt time), it has been completely changed over to the next product.

Seven Wastes: Taichi Ohno's original catalogue of the wastes commonly found in physical production. These are overproduction ahead of demand, waiting for the next processing stop, unnecessary transport of materials, over-processing of parts due to poor tool and product design, inventories more than the absolute minimum, unnecessary movement by employees during the course of their work, and production of defective parts.

Shadow Board: A visual control technique that uses an image of an object to show where it should be stored.

Single Minute Exchange of Dies (SMED): A series of techniques designed for changeovers of production machinery in less than ten minutes. Obviously, the long-term objective is always Zero Setup, in which changeovers are instantaneous and do not interfere in any way with continuous flow.

Single-Piece Flow: A situation in which products proceed, one complete product at a time, through various operations in design, order taking, and production, without interruptions, back flows, or scrap.

Skill Matrix: It is a matrix of skills required for performing a particular job. This assist in understanding the identification of training.

Soft-cost Savings: Assets that are freed up so they can be used for another purpose. This contributes no positive change to a company's profit & loss statement. Compare to Hard-cost saving.

Source Inspection: An inspection that detects errors in the manufacturing process before a defect occurs in the final part or product.

Standard Operating Procedure: SOP Reliable instructions that describe the correct and most effective way to get a piece of work done.

Standard Operations: The most efficient work combination that an organization can put together.

Standard Operations Combination Chart: A tool that enables you to study the work sequence for all your organizations work processes.

Standards: These involve comparison with accepted norms, such as are set by regulatory bodies.

Standard Work: A precise description of each work activity specifying cycle time, takt time, the work sequence of specific tasks, and the minimum inventory of parts on hand needed to conduct the activity.

Statistical Process Control (SPC): The use of mathematics and statistical measurements to solve an organization's problems and build quality into its products and services. .

Streamline: To reduce the time spent in non-value added steps, such as downtime, travel time, and inspecting or reworking materials.

Successive Inspection: An inspection that is performed after one operation in the production process is completed, by employees who perform the next operation.

Supermarket System: A stocking system in which materials are stored by the operation that produces them until they are retrieved by the operation that needs them. When the store is full the operation stops.

Symmetry: When opposite sides of a part, tool, material, or fixture are, or seem to be, identical. The identical sides of a symmetrical object can be confused during an operation, resulting in errors. Compare to asymmetry.

System Kaizen: Improvement aimed at an entire value stream.

Sub-Optimization: A condition where gains made in one activity are offset by losses in another activity or activities, created by the same actions crating gains in the first activity.

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