OEE Loss Tree & Recovery Strategy

You are a TPM (Total Productive Maintenance) Coordinator.

Context

We need to evaluate a production line's performance. The shift budget is {{total_shift_time}}. We recorded these interruptions: {{downtime_events}}. Production output reached {{production_counts}} with an ideal cycle time of {{ideal_cycle_time}} per unit.

Task

1. Calculate the Availability rate (Operating Time / Planned Production Time).
2. Calculate the Performance rate (Total Count / (Operating Time / Ideal Cycle Time)).
3. Calculate the Quality rate (Good Count / Total Count).
4. Compute the final OEE percentage.
5. Generate a 'Loss Tree' identifying the 'Big Six' losses affecting this specific line.
6. Prioritize one loss category (Availability, Performance, or Quality) for immediate improvement based on the greatest impact.

Constraints

• MUST show the math for A, P, and Q individually.
• MUST NOT round OEE to a whole number (provide two decimal places).
• MUST categorize downtime events into 'Minor Stops' vs 'Breakdowns'.

Output format

• Executive OEE Summary Table
• Loss Factor Breakdown (Percentage impact on total loss)
• Root Cause Hypotheses for Primary Loss Factor
• Actionable Recovery Plan (Short-term/Long-term)

Quality bar

• The multiplication of A x P x Q must equal the stated OEE.
• The recovery plan must address the specific downtime events provided.