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Lab#07.docx

Table 2 time study sheet with calculation step 4

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Table-2: Time Study sheet with calculation Step 4: Calculation of Standard Time To convert basic time (cycle time) into normal time you have to multiply it with operator performance rating . Here for calculation rating is considered as 100%. So, Cycle time and normal is same in this example. Add allowances to normal time (machine allowances, fatigue and personal needs etc). Add machine allowance only to those elements where machine is running and fatigue and personal needs to all elements (approx 20%). machine allowances are shown in the time study sheet. (I have used these allowance percentage as seen seniors to use them. I don't know the source of these allowance) The calculated time (Normal time + Allowance time) is standard time for each element in seconds. Sum up all elemental time and convert seconds into minutes. This is standard minutes or SAM (Standard Allowed Minute).
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Definition of Performance Rating: Rating is a subjective comparison of any condition or activity to a benchmark, based upon our experience. While the mechanics of time study record the time a task did take, applying a rating will determine the time a task should take. What is 100% performance or Normal Performance? The concept of 100% performance is a critical element of time study and performance measures.
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  • Spring '19
  • Time Study

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