When the Problem Isn’t the Machine: Data-Driven Maintenance Prevents a Costly Purchase
The Challenge
A pharmaceutical manufacturing site was under pressure to purchase a new multi-million-dollar sterilizer after the existing unit triggered 27 deviations in just two years. Leadership viewed the equipment as unreliable and potentially noncompliant, which was an urgent issue given its role in sterile manufacturing.
Our Analysis
A detailed analysis of temperature excursion data, maintenance logs, validation reports, and temperature probe performance revealed that the sterilizer itself was not the problem:
- Engineering and Manufacturing, each organization owned separate SOPs for sterilizer operation and maintenance, resulting in conflicting thresholds for deviation initiation and inconsistent preventive actions
- The manufacturer’s recommended probe replacement interval was 6 months, but probes were routinely used for 8 months or longer, leading to predictable failures
- The sterilizer consistently met design specifications; the real failure was in process ownership and preventive maintenance discipline
What We did
Implemented two targeted solutions to restore reliability and compliance:
- Unified Ownership: Consolidated all sterilizer activities under a single owning department with one harmonized SOP
- Data-Driven Maintenance: Established a new Planned Maintenance program aligned with the manufacturer’s recommendations and probe life-cycle data
Measurable Results
- Avoided the purchase of a new sterilizer, saving several million dollars in capital spend
- Eliminated recurring deviations related to probe performance and inconsistent maintenance
- Improved compliance and alignment between Engineering and Manufacturing
- The site shifted from reactive equipment replacement to proactive, data-driven asset management