RECORDING AND ANALYSIS TOOLS

Operation Process Chart

* Shows chronological sequence of all operations, inspections, time allowances and materials used in a manufacturing or business process, from the arrival of raw material to the packaging of the finished product * 2 symbols are used: small circle (operation) and small square (inspection) * Operation takes place when a part being studied is intentionally transformed or when it is being studied or planned prior to productive work being performed on it * Inspection takes place when the part is being examined to determine its conformity to a standard * Outline process chart – outlines only the operations * Vertical lines – indicate general flow of the process as work is accomplished * Horizontal lines feeding into vertical flow lines – indicate material (purchased or worked on during the process) * Parts are shown as entering a vertical line for assembly or leaving a vertical line for disassembly * Materials that are disassembled or extracted are shown as horizontal material lines drawn to the right of the vertical flow line * Assembly materials are shown on horizontal lines drawn to the left of the vertical flow line * Helps analysts visualized the present method, with all its details, so that new and better procedures may be devised * Shows analysts what effect a change on a given operation will have on preceding and subsequent operations * Aid in promoting and explaining a proposed method * The OPC: * Identifies all operations, inspections, materials, moves, storages and delays involved in making a part or completing a process * Shows all events in a correct sequence * Clearly shows the relationship between parts and fabrication complexity * Distinguishes between produced and purchased parts * Provides information on the