CASE STUDY

How ArcelorMittal Hunedoara saves 42 minutes per repair, improves wrench time by 13%, and recovers 1,000+ engineering hours per year.

INDUSTRY
Metallurgy

PRODUCTS
Steel
Production

HEADCOUNT
477 total

INTEGRATIONS
Google Drive, Excel

LOCATION
Eastern Europe

Steel production line in a metallurgy facility

Tacit AI helped us access manuals, drawings, and procedures instantly, reducing desk trips. Field teams spend more time on assets, improving work cycle and wrench times. The rolling mill pilot is just the beginning.

Adrian Toma headshot

Adrian Toma
Head of Maintenance

CHALLENGE

ArcelorMittal Hunedoara faced inefficiencies in its rolling mill lines due to fragmented technical documentation access. Workers frequently left the production floor to locate, translate, and print manuals, procedures, and work orders, taking 43 minutes to find technical documents through a cumbersome process that reduced first-time fix rates and extended repair cycles.

43 minutes to retrieve physical technical documentation
Extended repair cycles and prolonged downtime
Reduced first-time fix rates, increasing rework
Engineers leaving production floor frequently
Paper documents damaged and discarded after use

SOLUTION

Instant Knowledge Access

Workers can search, view, and translate manuals in real time, reducing repair times and improving first-time fix rates

  • Integrates with existing systems to source and unify user manuals, procedures, spare parts and technical drawings.
  • Workers can search, view, and translate manuals in real time using mobile devices.
  • Eliminated 43-minute workflow reduced to under 1 minute access time.
  • Real-time recommendations and mobile guidance for decision-making.
Tacit AI Platform showing steel mill documentation and procedures

Unified Knowledge Base

AI consolidated manuals, procedures, and work orders into a searchable knowledge graph, enabling fast, accurate access to critical information

  • Unified unstructured data and built a knowledge graph, representing equipment functionality, failure modes and asset hierarchies.
  • Adapted the Tacit AI Companion interface to client requirements, standards, language preferences and asset types.
  • Fine-tuned industry-specific AI to understand asset functionality and guide technical teams in real-time, through their mobile devices.
  • Continuously optimize the AI model with feedback from mechanics and engineers, improving accuracy from 73% to over 96%.
Tacit AI Companion showing steel mill field operations efficiency

RESULTS

42 min
Saved per repair
(98.7% document lookup time)

13%
Improved wrench time

156
Hours saved per engineer per year

Our rolling mill engineers now have instant access to critical information, allowing them to focus on what matters most – keeping our assets running efficiently and safely.

Adrian Toma headshot

Adrian Toma
Head of Maintenance

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