OPEXA
Case study · 2024

Cutting unplanned downtime by 31% on a continuous-process line.

Continuous-process plant had 4.2% unplanned downtime against 1.8% peer benchmark. TPM rebuild + maintenance reorganization in 8 months.

Cutting unplanned downtime by 31% on a continuous-process line.

31%

Unplanned downtime reduction

+12pts

Asset utilization lift

$19M

Annualized savings

0

Lost-time injuries

Challenge

The starting condition.

Continuous-process building materials plant had 4.2% unplanned downtime — peer benchmark was 1.8%. Each downtime hour cost $42K in lost throughput and overtime recovery cost.


Approach

What we did,
in order.

  1. 01

    Maintenance organization redesign: separation of routine, planned, and breakdown work.

  2. 02

    Reliability-centered maintenance (RCM) deployed on top 14 critical assets.

  3. 03

    Operator-driven autonomous maintenance program for 38 routine PMs.

  4. 04

    Maintenance planning function built — previously did not exist.

  5. 05

    Spare parts strategy redesigned with criticality-based stocking levels.


Results

What was sustained,
at month twelve.

  • 31% reduction in unplanned downtime, sustained at month 12
  • +12 percentage points asset utilization lift
  • $19M annualized savings from recovered throughput and reduced overtime
  • Zero lost-time injuries during engagement
  • Maintenance function reorganized with internal planner role permanently added
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