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Programmable logic controllers on Saudi production lines run the machine sequences, safety and line coordination in factories from Riyadh to Jeddah and Dammam. This page looks at PLCs from the machine builder and integrator side: specifying controls for imported machines, PackML, safety controllers, legacy migration, SASO requirements as of 2026, and the cost and timing of line control projects.
Process plants cannot run without instrumentation, so electronics and industrial automation sits at the centre of Jubail's maintenance budgets. The petrochemical and refining plants of Jubail Industrial City, where SABIC alone runs 13 of its 16 Saudi production plants according to Saudipedia, operate control rooms with thousands of field devices. Older units get upgraded in stages, and newer chemical parks in Jubail 2 add fresh instrumentation orders when units are built.
Plants buy programmable logic controllers, sensors and switches, industrial networking and safety controllers and relays. Cybersecurity pushes demand for industrial firewalls, and ageing control cabinets create a steady market for power supplies and converters. Hazardous-area ratings decide what you can sell: an instrument for a gas processing area needs the right certification, not only the right function.
Operators prefer a short list of platforms they already train staff on, so a supplier that offers a different brand must prove compatibility and local support. Expect questions about spares holding, engineer response time and obsolescence. Many buyers work through system integrators and panel builders in the Eastern Province, who in turn source components from distributors in Jubail, Dammam and Khobar. Mawani's Saudi Global Ports container terminal upgrade, reported in April 2026 with capacity rising to 2.4 million TEU, signals the port-side automation demand as well.
Ask for the ex-works and delivered lead time of each controller or drive, since long lead items can delay a shutdown. Check hazardous-area and ingress certification on the data sheet, and confirm that firmware and software licences are included. Salt and heat shorten electronics life, so ask whether cabinet cooling and conformal coating are offered. Keep a spare for each critical card or sensor. Compare offers for one control scope through post a requirement.
Jubail is a planned industrial city before it is a town. The Royal Commission for Jubail and Yanbu, created in 1975, develops and runs Jubail Industrial City on the Arabian Gulf coast of the Eastern Province. Saudipedia names SABIC as the main owner of the industrial complexes and says 13 of its 16 Saudi production plants stand here, alongside Saudi Aramco Total Refining and Petrochemical Company (SATORP), Advanced Petrochemical Company and Jubail United Petrochemical Company. The older estate is often called Jubail 1. Jubail 2, whose foundation stone was laid in 2004, was planned in stages, with about a quarter of its area reserved for industry and a primary zone for chemicals such as methanol, ethylene oxide and ammonia, according to a 2018 trade report.
The Commission reported that investment across its industrial cities passed SAR 1.5 trillion (about USD 400 billion) by the end of 2025, and Saudipedia says it has set aside SAR 67.5 billion to double the city's area by 2030. Smaller fabricators, workshops and service firms cluster around the main plants, because the big complexes buy maintenance and contract labour continuously.
The Port of Jubail is two harbours under Mawani, the Saudi Ports Authority. King Fahd Industrial Port, opened to serve the industrial city, handles bulk and plant cargo, and Jubail Commercial Port handles general, container and bulk cargo. Saudi Global Ports, a PIF and PSA International venture, holds a build-operate-transfer contract for multipurpose terminals at four Eastern Province ports including both Jubail harbours. In December 2025 Mawani announced a land lease of more than SAR 500 million to a chemical terminal operator for 70,000 cubic metres of chemical storage at Jubail Commercial Port. Dammam is about 100 km south by road, and trucks and rail carry cargo on to Riyadh.
Inside the industrial city, the Royal Commission allocates land, supplies infrastructure and approves investors. Power, water and seawater cooling come from Marafiq, the utility for Jubail and Yanbu. Fire and life safety approvals come from the General Directorate of Civil Defense, medical products need the Saudi Food and Drug Authority, and customs entries are handled by ZATCA. Confirm the current steps with each body before signing.
Petrochemicals, refining and chemicals buy pumps, valves, instruments, coatings, gases and maintenance services on shutdown calendars. Utilities and the port buy electrical and marine equipment. Construction and housing demand follows the expansion programme.
