Enter each step’s effective capacity, demand and throughput per unit to find the bottleneck, the value of each hour there and what raising its capacity returns.
Pre-sizing and estimating tool: results do not replace design, calculations or reports signed by a licensed professional, nor verification against the applicable codes and standards.
The shortest bar limits system output; the dashed line is market demand.
The gain grows until the next constraint (another step or the market) and then stops.
Cash flow of the improvement: investment in year 0 and annual savings escalated at the rate entered, discounted at the MARR.
The report gathers this page's inputs, results, equations, assumptions and references, with fields for project, engineer and revision. In the print dialog, choose Save as PDF.
It is the step with the lowest effective capacity relative to demand. Practical signs: a queue of material before it, downstream steps waiting and the step running all the time.
The output the bottleneck would make in that hour times throughput per unit. At 118 units/h and $16 throughput, a lost hour costs the whole plant about $1,900.
Because total output stays limited by the slowest step. Gains elsewhere only build work-in-process, unless they cut real costs.
Important notice: Indus Metrics tools produce estimates and pre-sizing results from the data you enter and from published engineering methods. They do not replace design, calculations or reports signed by a licensed professional engineer (PE), nor verification against the applicable codes, standards and regulations, such as OSHA rules and the ASME codes. Material and fuel properties vary: check manufacturer data or your own process analyses before deciding. By using this site you agree to the Terms of Use.
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