process flow chart

The entire system or process of doing work should be studied before undertaking a thorough investigation of a specific operation in the process.
Such an over-all study will ordinarily include an analysis of each step in the manufacturing process or system.

Process Analysis Tools
♦Operation process chart
♦Flow process chart
♦Flow diagram

OPERATION PROCESS CHART
The operation process chart shows the 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.
The chart depicts the entrance of all components and subassemblies to the main assembly.
Two symbols are used in constructing the operation process
Chart : an operation and an inspection.

FLOW PROCESS CHART
The flow process chart is a device for recording a process in a compact manner, as a means of better understanding it and improving it.
The chart represents graphically the separate steps or events that occur during the performance of a task or doing a series of actions.
The chart usually begins with the raw material entering the factory and follows it through every step.

The process chart symbols :
The American Society of Mechanical Engineers (ASME) has established the five standard symbols are described
As follows:
Operation
An operation occurs when an object is intentionally changed in one or more of its characteristics. An operation represents a major step in the process and usually occurs at a machine or work station.

Transportation
A transportation occurs when an object is moved from one place to another, except when the movement is an integral part of an operation or and inspection.
Inspection
An inspection occurs when an object is examined for identification or is compare with a standard as to quantity or quality.

Delay
A delay occurs when the immediate performance of the next planned