2 flow process chart flow process chart gives the

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2. Flow Process Chart Flow process chart gives the sequence of flow of work of a product or any part of it through the work centre or the department recording the events using appropriate symbols. It is the amplification of the operation process chart in which operations; inspection, storage, delay and transportation are represented. However, process charts are of three types: a) Material type Which shows the events that occur to the materials. b) Man type Activities performed by the man. c) Equipment type How equipment is used. The flow process chart is useful: to reduce the distance travelled by men (or materials). to avoid waiting time and unnecessary delays.
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159 to reduce the cycle time by combining or eliminating operations. to fix up the sequence of operations. to relocate the inspection stages. Like operation process chart, flow process chart is constructed by placing symbols one below another as per the occurrence of the activities and are joined by a vertical line. A brief description of the activity is written on the right hand side of the activity symbol and time or distance is given on the left hand side. 3. Two Handed Process Chart A two handed (operator process chart) is the most detailed type of flow chart in which the activities of the workers hands are recorded in relation to one another. The two handed process chart is normally confined to work carried out at a single workplace. This also gives synchronized and graphical representation of the sequence of manual activities of the worker. The application of this charts are: To visualise the complete sequence of activities in a repetitive task. To study the work station layout. 4. Multiple Activity Chart It is a chart where activities of more than subject (worker or equipment) are each recorded on a common time scale to show their inter-relationship. Multiple activity chart is made: to study idle time of the man and machines, to determine number of machines handled by one operator, and to determine number of operators required in teamwork to perform the given job. 11.3.7 DIAGRAMS USED IN METHOD STUDY The flow process chart shows the sequence and nature of movement but it does not clearly show the path of movements. In the paths of movements, there are often undesirable features such as congestion, back tracking and unnecessary long movements. To record these unnecessary features, representation of the working area in the form of flow diagrams, string diagrams can be made: 1) To study the different layout plans and thereby; select the most optimal layout. 2) To study traffic and frequency over different routes of the plant. 3) Identification of back tracking and obstacles during movements. Diagrams are of two types: 1. Flow diagram and 2. String diagram.
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