Where our plant experience concentrates
Six themes run through almost every ARINA project. Each one is a problem steel and metallurgical plants keep asking us to solve.
What clients come to us for
Green steel & decarbonization
Engineering for the transition away from integrated blast-furnace routes, the agenda reshaping European steelmaking over the next decade.
- Decarbonization roadmaps
- Ultra-low-carbon (ULC) steel
- EAF transition
Salzgitter: FEED for the EAF transition and green steel concept. Tata Steel IJmuiden and Port Talbot: cooling, piping and material handling inside the ULC Steel programme.
Explore this areaIndustry 4.0 & smart plants
Digital work that earns its keep: simulate before you build, validate before you commission, then keep optimizing on real process data.
- Digital twins
- Plant simulation
- Automation
Digital twin of an aluminium recycling plant (2023). Logistics simulation for a Czech long-products maker (2025). Industrial digitalization study at Vinton Steel, USA (2025).
Explore this areaBrownfield modernization
Work inside plants that cannot stop. Tight shutdown windows, legacy drawings that no longer match reality, and production that has to restart on schedule.
- Plant upgrades
- FEED studies
- CAPEX studies
Sidenor Basauri: workshop refurbishment study covering structure, safety and a new production-flow layout (2025). Nervacero and Megasa: canopy design with CFD validation of ventilation and fume control.
Explore this areaCircular economy
Recycling and secondary metallurgy, where the feedstock is variable and the economics live or die on charge purity and yield.
- Scrap handling
- Aluminium recycling
- Secondary metallurgy
Complete plant design for aluminium recyclers across Europe, Asia and the Americas: Hydro, Novelis, Constellium, Tesla Berlin, Exlabesa and others.
Explore this areaOEM independence
Keeping a plant supplied and serviceable without being locked to the original equipment maker, including parts whose drawings no longer exist.
- Reverse engineering
- Multibrand supply
- Capital spares
Reverse engineering of EAF vessels and refractory-lined bottoms; water-cooled copper panels, EBT slide plates and forged contact pads for operating furnaces.
Explore this areaSupply chain management
The procurement side of a project, handled with the same technical scrutiny as the engineering, because a vendor's deviation is an engineering problem.
- Procurement support
- Vendor management
- Logistics strategy
Vendor assessment, technical document review and procurement support across greenfield and brownfield programmes on four continents.
Explore this areaFour disciplines, one accountable team
Whatever the theme, the same four disciplines are coordinated under a single technical responsibility, with scope, interfaces and documentation closed before any deliverable leaves the office.
Process & BoP
Process design, balance of plant, utilities and auxiliary equipment. Fluid engineering, P&IDs and equipment specification.
Electrical, automation & I&C
Power distribution, control and automation, industrial instrumentation, control-system engineering and plant communications.
Civil, structural & architectural
Steel structures, foundations, plant layout and industrial buildings, designed for high-load, high-temperature environments.
Plant integration & FEED
Multidisciplinary coordination, interface management and the technical baseline that keeps the disciplines coherent and removes grey areas.
Which of these is your problem?
Describe the plant and the constraint. We will tell you what we have done that is closest to it.