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Scrap Recovery Overall Equipment Effectiveness Calculator

The Scrap Recovery Overall Equipment Effectiveness Calculator estimates OEE for a recovery operation by combining availability, performance, and quality into one percentage. It is intended for reclaim lines and recycling equipment where managers need to distinguish time losses, speed losses, and unusable recovered output rather than looking only at total recovered mass.

The result can help identify which loss category deserves attention first. Low availability points toward downtime, low performance suggests the line is running below its ideal pace, and low quality indicates that too much processed output is not meeting the usable-recovery standard. The calculation uses the standard multiplicative OEE structure, with the ideal cycle time expressed per processed unit or batch.

OEE inputs

min
min
units
sec/unit
units
Result
—
Overall equipment effectiveness
Availability—
Performance—
Quality—
Run time—

1. Enter planned time
Use the production time scheduled for the recovery equipment during the measurement window.

2. Record downtime
Enter stops that occurred inside planned production time.

3. Add processed counts
Enter total processed units and the subset that met the good recovered-output definition.

4. Enter ideal cycle time
Use the best sustainable design or validated ideal cycle time in seconds per processed unit.

5. Review OEE components
Use the component percentages to see whether time, speed, or quality is the largest loss source.

Availability = Run time ÷ Planned production time
Performance = (Ideal cycle time × Total processed units) ÷ Run time
Quality = Good recovered units ÷ Total processed units
OEE = Availability × Performance × Quality

Run time equals planned production time minus downtime. For the performance term, run time is converted to seconds so its unit matches ideal cycle time. Each factor is expressed as a decimal before multiplication and then displayed as a percentage.

If calculated performance exceeds 100%, the entered ideal cycle time, count basis, or run-time definition should be reviewed because an ideal benchmark normally represents the fastest sustainable pace.

What the result means

OEE combines time utilization, operating speed, and good-output share into a single equipment-effectiveness percentage.

Use the component results alongside OEE; the combined percentage alone does not show which type of loss is driving the gap.

Given

  • Planned production time = 480 min
  • Downtime = 55 min
  • Total processed units = 920
  • Ideal cycle time = 24 sec/unit
  • Good recovered units = 865

Calculation

Run time = 425 min. Availability = 425 ÷ 480 = 88.54%. Performance = (24 × 920) ÷ (425 × 60) = 86.59%. Quality = 865 ÷ 920 = 94.02%. OEE = 0.8854 × 0.8659 × 0.9402 = 72.06%.

Result

Estimated OEE = 72.06%.

The combined result shows that the recovery process converts about 72% of planned productive opportunity into ideal-speed, good output under these assumptions.

What counts as good recovered output?

Define good output consistently for the process, such as material meeting contamination, size, moisture, or reuse specifications. The definition should stay the same when comparing periods.

Should planned breaks be included in planned production time?

Only include time that the equipment was expected to be available for production. Excluded breaks should be removed before entering planned production time.

What does performance above 100% mean?

It usually signals that the ideal cycle time is too slow for the count basis, or that time and units were entered on inconsistent bases. Review those inputs rather than treating more than 100% as an OEE improvement.

Can I calculate OEE by mass instead of units?

The quality term can be adapted to mass, but the performance term must use an ideal rate or cycle definition that matches that same output basis. This page is labeled for unit counts, so keep the entered count basis consistent.

How is OEE different from recovery yield?

Recovery yield focuses on usable output relative to material input. OEE also includes downtime and speed performance, so it evaluates equipment effectiveness across more loss categories.