News

System integrator Holland-Controls has initiated a critical automation system modernization project across an active offshore oil and gas production platform. The engineering scope focuses on overhauling legacy control hardware and software supporting essential emergency diesel generator units. By migrating aging Siemens PCS 7 control system logic, legacy human-machine interfaces, and obsolete operating environments to current-generation industrial computing frameworks, the overhaul eliminates single-point hardware failure risks, reinforces OT cybersecurity compliance, and safeguards continuous platform uptime.

Offshore oil and gas production platforms operate under stringent operational availability demands, where uninterrupted electrical power is vital for crew safety and environmental protection. Emergency diesel generator packages serve as the primary defensive line during primary power interruptions. However, keeping legacy control technology operating past vendor lifecycle support windows introduces operational risks, security vulnerabilities, and component sourcing delays.

To mitigate these lifecycle risks, Holland-Controls was selected to execute a comprehensive migration strategy for a major offshore operator. The existing control architecture had relied on an legacy industrial automation configuration built aroundSiemensSIMATIC PCS 7 software, TIA-based visualization applications, and legacy operator interface panels running the retired Windows CE6 operating system. Having delivered over seven years of continuous duty in demanding marine conditions, the original computing hardware and embedded operating platforms reached official end-of-life (EOL) status, making vendor technical support and certified security patches unavailable.

The modernization roadmap addresses both physical hardware renewal and software environment updates. Field technicians are replacing legacy HMI hardware with industrial-grade touchscreen operator terminals engineered for severe marine environments. Operating software is migrating to Windows 11 IoT Enterprise LTSC, providing long-term operating system support along with modern cybersecurity defenses required to block unauthorized network access.

Maintaining system continuity without requiring extensive field re-cabling is a priority during the project's execution. Holland-Controls is preserving all existing field communication networks, including active Modbus protocols, ensuring seamless data exchange between generator skid controllers and central platform monitoring hubs. The control software stack is undergoing a structured upgrade to currentSiemens CPU and I/O moduleengineering environments within PCS 7 and TIA Portal. Furthermore, engineers are configuring dedicated engineering programming laptops (PG units) to streamline future maintenance and diagnostic routines for offshore platform operators.

To ensure rapid site deployment and prevent unexpected platform downtime, Holland-Controls is managing rigorous Factory Acceptance Testing (FAT) at its onshore facility prior to offshore installation. Client representatives observe comprehensive hardware inspections, function loop testing, and graphic display verification before and after software translation. This thorough pre-commissioning phase guarantees that control sequences mirror existing operations exactly, delivering an intuitive operator experience upon final offshore deployment.

This modernization project demonstrates how proactive lifecycle management and structured system migration protect critical energy assets against software obsolescence and hardware failures.

Written by: Julian Drake, a senior automation consultant with 15 years of hands-on expertise specializing in legacy DCS migrations and control system revamps for offshore process facilities.