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Multiple activity chart

• Activities of more than one item(worker,machine or equipment) are recordedon a time scale to show their relationship

• Objectives•  To determine the period of idleness on the part

of men and machines

•

 To determine the number of machines whichan operator should be able to look after

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• In organising teams of workers onmass production work

•

 To determine the number of workersnecesssary to perform a job involvingteam work

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Flow diagram

•  The process charts show only the sequenceof activities in a process but does notindicate the path of movement of materials

and men on the shop floor•  The flow diagram can be used to anlyse the

movement of materials to study

i. the different plant layouts and selectoptimum layout

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ii. Extent of traffic over the differentroutes of the plant

iii.Identify extent of back tracking,cross traffic and obstacles encounteredduring the movement of material

iv.Study the activity relationshipbetween departments/sections/workcentres

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• Steps of flow diagram

• i. draw to scale the plan of work area

• ii. Mark the relative position of machines, store and inspection booth

• iii. From different observations draw

the actual movement of materials orthe worker on the diagram andindicate direction of movement

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• Different colours are used to identifydifferent types of movements

eg : worker with empty trolley andworker with loaded trolley

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