COURSE: INDUSTRIAL ENGINEERING LESSON: WORK STUDY- (PART -1)
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WORK STUDY Work study is simply the study of work and it is the analysis of work into smaller parts followed by re-arrangement of these parts to give more effectiveness at a lesser cost. It examines both the method and duration of work and is also known as time and motion study. I. Method-Study : It is the systematic recording and critical examination of the existing ways of doing a job to develop more easier and effective ways of doing the same job. The aim is to increase effectiveness and productiveness 2. Time Study (Work Measurement) : It is the application of techniques designed to establish time for a qualified worker to carry out a specified job at a defined level of performance.
ADVANTAGES OF METHOD STUDY I. Improve working process 2. Better work place layout 3. Less fatigue to workers 4. Efficient and fast material handling 5. Effective utilisation of man, material and machine 6. Better product quality Select A job Record All data related to job Examine Recorded data Develop Alternate for job Higher Productivity Maintain Install The best
RECORDING TECHNIQUE These are designed to simplify and standardize the recording work. The following are the generally used techniques l. Process Chart Sequence of operations a) Outline process chart b) Flow process chart (man type, material type, machine type) c) Two handed process chart 2. Time Series a) Multiple activity b) SIMO charts c) PMTS 3. Diagram a) Flow Diagram b) String Diagram c) Cycle Graph d) Chrono cycle graph e) Travel Chart
SYMBOLS Operation Storage -Inspection Delay or temporary storage Transportation
PROCESS CHARTS A. Outline Process Chart: It gives a bird eye view of the process and includes only two symbols that is operation and inspection. It does not give details about work. B. Flow Process Chart: It is detailed version of outline process charts and it records all the events sequence wise. This chart gives a complete picture of what is being done and helps to understand the facts and their relationship in a better way.All the process chart symbols are used here. C. Two handed Process Chart: It records the activities of left hand and the right hand of an operator related to each other. The activities of the two hands can be synchronized by providing a common time scale and is commonly used for repetitive and short cycle operations.
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