Infinite Buffer Closed Lines - Improvement Strategies
 

• When the performance of a line falls below that of the practical worst case for that line there usually exists considerable opportunity for improvement. For example the figure below illustrates a line in which current performance is worse than the PWC, as shown by the point "Current", which indicates improvements are possible. If the point "Target 1" represents desired performance, then either capacity increases or variability reductions can be used to achieve it. If "Target 2" represents desired performance, then a capacity increase is necessary.

Current performance and desired performance levels

• Generic improvement strategies, roughly in order of their impact, are:
1. Increase capacity at bottleneck
2. Decrease variability at bottleneck.
3. Increase capacity at non-bottleneck.
4. Decrease variability at non-bottleneck

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