Driving Measurable Migration Success Through Long-Term Partnership
- GPA
- Apr 29
- 3 min read
A large, continuous-process pulp and paper facility began a multi-year control system modernization strategy to address aging platforms, reduce operational risk, and improve outage execution. Rather than pursuing a single large cutover, the facility adopted a phased migration approach spanning a decade, aligning upgrades with routine outages and major shutdowns to limit production impact.
At the time of this project, the site was more than five years into its ten‑year plan, with this effort representing the eighth phase in a fourteen‑project migration roadmap. Operations and maintenance teams were fully invested in executing the work safely and predictably, with minimal disruption. In large‑scale control migrations, execution risk and outage performance often matter more than the technology itself.
The Challenge
Like many legacy industrial facilities, the plant faced challenges beyond equipment obsolescence:
Control systems were built on multiple legacy platforms, increasing complexity and risk
Migration work had to fit within tight outage windows, especially during major shutdowns
Traditional ROI models did not fully capture the value of modernization, which is often driven by necessity
Success depended on coordination, trust, and efficiency across teams
The primary risk was not installing new hardware. Rather, it was executing migration without becoming a critical‑path constraint during a major outage with an extremely tight schedule.
GPA's Solution
GPA supported the facility as a long-term partner across multiple phases of its migration. This allowed steady progress while reducing execution risk and outage pressure.
Phased Migration Strategy
Modernization work was aligned with both routine and major outages. This allowed large portions of the work to be completed outside of crowded shutdown windows, improving execution quality and reducing congestion.
Key elements included:
Moving I/O and logic changes into smaller planned outages
Structuring major cutovers only when systems were fully prepared
Ensuring each phase built cleanly on the last
Preparation, Simulation, and Living Documentation
Strong front end preparation played a major role in success.
Development systems and simulations were used to test logic before field execution
Documentation was continuously updated and treated as a shared, living asset
Operators and technicians engaged early, improving usability and reducing late changes
This approach reduced rework and prevented gaps between revisions. It also removed the need to compress testing into rushed timelines.
Deep Site Integration and Partnership
Years of collaboration created advantages beyond technical execution:
GPA teams understood site layouts, access procedures, and requirements
Strong relationships with plant E&I personnel improved coordination
GPA control specialists and field teams worked as one integrated group
These efficiencies added up over time and directly improved outage performance.
Results
The combined impact of preparation, phased execution, and strong working relationships delivered measurable results for the facility:
Of approximately 1,700 I/O points within scope, more than 1,100 were migrated during routine outages, significantly relieving congestion during the major shutdown
As a result, the project was fully removed from the outage critical path, lowering execution risk and reducing stress on the broader outage team
I/O checkout began early and progressed rapidly, with approximately 80% completed nearly 24 hours ahead of schedule
Timeline showing I/O checkout progress over the outage window, demonstrating steady completion ahead of schedule. Early completion of primary tasks allowed teams to focus on the final 20% of work, which typically includes maintenance items, repairs, and equipment replacements that require additional attention and are often rushed
All planned work was completed ahead of schedule with zero contingency days used
The successful execution created flexibility for personnel recovery time before transitioning to subsequent projects
Rather than simply “getting the system running again,” the project demonstrated how disciplined execution and long‑term partnership can materially improve outage outcomes.
Conclusion
This project illustrates how the greatest returns from controls modernization are often found in execution efficiency and risk reduction, not just equipment replacement. Through a long‑term partnership approach, GPA helped the facility turn a complex migration phase into a predictable, low‑stress success.
By combining phased planning, high-quality simulation, and deep site integration, the project delivered results that extended beyond the immediate scope. These results reinforced confidence in the broader modernization strategy and created a strong foundation for future phases.
