PI System Brownfield Assessment: Assess Today, Modernize Tomorrow
Your AVEVA PI System has been capturing plant data for years. But is it still reliable, secure and ready for digital twins and AI? A structured PI System brownfield assessment gives you the answer, and a clear roadmap forward.
In many plants across Indonesia's oil & gas, power and manufacturing sectors, the PI System was installed years ago and has quietly grown ever since. New interfaces were added, tags multiplied, and Excel reports and dashboards were connected one by one. It still works, most days. But underneath there may be ageing servers, unsupported software versions, data gaps and security weaknesses that nobody has looked at closely in a long time.
Our short video sums it up in one line: industrial data drives a brighter tomorrow. A reliable PI System is what turns raw process data into operational intelligence, and a brownfield assessment is how you make sure yours is up to the job.
Key Takeaways
- A brownfield assessment reviews your existing PI System end to end, from OPC data sources to the dashboards and reports people use every day.
- It checks six areas: system health, data quality, performance & capacity, redundancy & availability, security, and version compatibility.
- The findings become a clear list of risks and opportunities, plus a future-ready architecture: on-premises, cloud or hybrid.
- Upgrades are carried out in a controlled way, with parallel operation, data validation, a planned cutover and a rollback plan.
- The result is a reliable, secure foundation ready for digital twins, AI/ML and predictive maintenance.
What Is a PI System Brownfield Assessment?
In engineering, a greenfield project starts from scratch, while a brownfield project works with what is already in place. A PI System brownfield assessment is a structured health check and strategy review of your existing installation, done before you upgrade, expand or migrate it.
The approach follows three simple steps: Discover what you have, Inspect how well it is working, and Validate the findings against best practice and your business needs. It covers the entire data path:
- OPC Server (DA/UA) — where data leaves the control system
- PI OPC Interface — collects the data and buffers it if the connection drops
- PI Server (Data Archive) — stores high-resolution time-series history
- PI Asset Framework (with SQL Server) — gives data context by organizing it around real equipment
- PI Vision and PI DataLink — the dashboards and Excel tools engineers and operators use daily
- Integrations — Excel, Power BI, Python and APIs that feed other business systems
A weak link anywhere in this chain affects everything downstream. That is why the assessment looks at the whole picture, not just the server.
Six Areas We Examine
Each focus area answers one practical question about your system:
Turning Findings into Risks and Opportunities
Every assessment ends with a clear, prioritized picture. The issues we most often find in brownfield PI Systems are:
- Legacy infrastructure — old operating systems, hardware and software versions that are hard to support and even harder to secure.
- Performance bottlenecks — slow trends, delayed data and overloaded servers that frustrate users.
- Security exposure — flat networks, shared accounts and direct connections between plant and office networks.
- Single points of failure — one server or interface that, if it goes down, takes your data with it.
The good news is that every risk is also an opportunity. Fixing these issues improves reliability, cuts troubleshooting time and builds a stronger base for whatever comes next.
Designing a Future-Ready Architecture
Once the gaps are understood, the next step is designing the target architecture. There is no single right answer. The best design depends on your sites, your IT policy and your goals:
- On-premises — full control, with everything running inside your own facility.
- Cloud — easier scaling and remote access, with less hardware to maintain.
- Hybrid — critical data stays on site while selected data is shared to the cloud for enterprise-wide analytics.
Secure and Controlled Connectivity
Good architecture keeps the plant safe. Data flows from the OT (control) network, through an Industrial DMZ, to the IT (enterprise) network. The DMZ acts as a secure buffer: business users get the data they need without ever touching the control network directly. This layered design follows recognized industrial security practice such as the Purdue model and IEC 62443.
Enterprise Integration and User Access
Connecting the PI System to Active Directory lets users log in with their normal company credentials. That brings single sign-on, role-based access, centralized user management and a proper audit trail, so the right people see the right data and every change can be traced.
Upgrading Without Disrupting Operations
For a running plant, the biggest worry about modernization is downtime and data loss. That is why the move from the existing PI environment to the modernized one is carefully controlled:
- Parallel operation — old and new systems run side by side, so nothing is switched off too early.
- Data validation — values in the new system are compared with the old one to confirm nothing is missing or different.
- Controlled cutover — the switch happens at a planned time, agreed with operations.
- Rollback ready — if anything unexpected happens, a tested plan returns you to the previous system.
Building the Foundation for What's Next
A modern, healthy PI System is more than an IT upgrade. It is the foundation for the capabilities that are reshaping industry:
- Digital twin — a live virtual model of your assets and processes.
- Advanced analytics & AI/ML — finding patterns and predicting outcomes that are invisible in raw trends.
- Predictive maintenance — spotting equipment problems before they cause a trip or shutdown.
- Operational optimization — running the plant closer to its best, every shift.
All of these depend on one thing: trustworthy, well-organized data. Without a solid foundation, even the most advanced AI will struggle.
Assess Today. Modernize Tomorrow.
Modernizing your PI System doesn't have to be risky or overwhelming. It starts with understanding exactly where you are today. A brownfield assessment gives you that clarity, along with a practical roadmap toward a more reliable, secure and intelligent industrial data platform.
Ready to see how healthy your PI System really is?
As an AVEVA and Schneider Electric partner, PT Scada Prima Cipta (SPC) helps industrial companies across Indonesia assess, upgrade and get more value from their PI Systems. Contact the SPC team to schedule your PI System brownfield assessment.