Capacity study :
Capacity study is similar to time study where the operator's time will be determined, but the objective is not to reach a time standard, but to find out the potential/performance level of the operator.
Here we measure the performance and potential that an operator should achieve; If he works in continuous operation at the same speed and in the same manner as observed during the study.
This means that the operator is able to achieve the performance measured by the study (Seminar SCT, 2010).
Benefits of capacity study :
• Check targets
• Motivate operators
• Measure section production capability
How to perform capacity studies?
1. Obtain necessary details of operations like work and machines.
2. Once the optimal method is applied, observe ten single cycles (SC) with a stop watch.
3. Once the readings are noted, calculate the average SC observation and arrive at the operator's capacity.
4. Cycle breakdown time like machine delay, handling of bundles etc. is included to calculate average SC time during capacity study.
5. The reason behind this is that the above delays will occur irrespective of the ability or capacity of the operators, so these delays cannot be considered as a measure of the operator's ability.
6. But these delays must reduce the operator's actual performance for the day.
Examples of Capacity Study Calculations:
For an operator working in an operation where SAM is 0.45 min, SC@100% is 0.41 min,
The machine type used is SNLS and the average observed SC time is 0.65 min.
Quota (100% target) is = working time min/SAM
Shift duration – 8 hours = 480 minutes = 480/0.45 = 1066 pieces.
SC efficiency is = SC@100%/average observed SC time = 0.41/0.65 = 0.63 = 63%.
Capacity per day = Quota × SC Efficiency = 1066 × 0.63 = 671 pieces
Capacity per hour = Capacity per day/No. work time = 671/8 = 83 pieces.
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