Project Success Story: Ex D PLC CIS Process Control Solution
Reliable control for hazardous-area applications — engineered, assembled, tested and delivered by ATCO as a complete, ready-to-install solution.
How ATCO Solutions utilized its in-house engineering, integration and testing capabilities to deliver ready-to-install CIS Process Control Solution with uncompromised hazardous- protection for a Class I, Zone 2 hazardous area.
The Challenge
A Saudi Aramco project needed Process Control Solution for their Chemical Injection Skids application planned to operate in a Class 1, Zone 2 hazardous area – an environment where flammable gases may be present and consequently any electrical equipment must be protected against becoming an ignition source.
The control system had to be housed in Ex d flameproof enclosures without
compromising that protection. At the same time, the cabinets had to remain
practical for day-to-day plant operation and maintenance, fit the required control
equipment within the enclosure constraints, and satisfy the full set of project
requirements expected on a major oil and gas program.
Our Solution
Our engineering team designed the system configuration complying with applicable Saudi Aramco and NEC/UL guidelines and standards that accommodated all required control equipment inside the Ex d flameproof enclosures while maintaining the protection needed for Class I, Zone 2 installation. Equipment was arranged for practical access, so operators and maintenance teams can work on the system efficiently throughout its service life.
The design brought together six priorities: hazardous area protection, reliable PLC
control, quality panel construction, practical equipment arrangement,
maintainability, and full compliance with project requirements.
Each cabinet was integrated, inspected and tested before dispatch, arriving on site
as a complete, ready-to-install solution.
Beyond the deliverables, the project gave the client a single accountable partner for both automation and hazardous-area engineering. Rather than coordinating separate suppliers for enclosures, control equipment and integration, the project team received a finished, tested solution built to Saudi Aramco’s requirements.
What's next?
This project demonstrates ATCO Solutions’ ability to execute specialized automation and hazardous-area control work for the oil and gas industry – from engineering and integration through testing and final delivery. We are applying the same combination of automation expertise, hazardous-area know-how and quality execution to further control and instrumentation packages for major oil and gas projects across the Kingdom.
Partner with ATCO Today
Whether you're building new infrastructure or upgrading systems already in service, ATCO delivers automation, instrumentation and safety solutions engineered for reliability — and for the environment they have to work in.
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