About the Cassel Works Site, Billingham
The Cassel Works facility was one of the most significant chemical manufacturing sites in the UK.
Originally developed during the 1930s as part of the rapidly expanding Imperial Chemical Industries (ICI) operations in Billingham, the site became globally recognised for the production of Methyl Methacrylate (MMA), the key precursor used in the manufacture of Perspex acrylic products.
Over decades of expansion, modification and equipment upgrades, the facility evolved into an extremely complex industrial environment featuring:
- Dense pipework networks
- Multiple process units
- Hazardous operating areas
- Legacy infrastructure dating back many decades
- Continuous 24-hour operations
Following ownership changes from ICI to Lucite International and later Mitsubishi Chemical, the site ultimately ceased production and entered demolition in 2023, bringing more than 90 years of continuous chemical manufacturing at Billingham to an end.
For several years prior to closure, Luminous supported engineering and maintenance teams with reality capture and digital modelling services designed to improve operational visibility and project planning.
3D Laser Scanning Scope of Works
Over the course of the programme, Luminous captured and modelled numerous critical areas across the site, including:
- Cyanide Cubicles
- Pipe Bridges
- Oleum Vessels
- SAR Converter/Furnace
- Hot BMA Tanks
- MMA Tanks
- Steam Let Down Systems
- HCN6 Vessels
- Structural Steelwork
- Utility Infrastructure
- Process Pipework Networks
The project eventually expanded into a comprehensive scan and as-built model covering the wider Cassel Works facility.
Working in a Live Hazardous Environment
One of the defining challenges of this project was operating within a live petrochemical production facility. The site operated continuously, requiring survey activities to be carefully coordinated around operational constraints and maintenance schedules.
Safety Requirements
All survey work was conducted under strict site safety procedures, including:
- Full PPE requirements
- Gas detection equipment
- Hazardous area compliance
- Cyanide handling awareness training
- Intrinsically safe equipment procedures
- Strict access controls
Particular challenges included:
- Severe vibration from operating plant
- Congested process areas
- Restricted access zones
- Elevated working locations
- Hazardous chemical environments
These conditions demanded a highly methodical scanning workflow with extensive overlap between scan positions to ensure registration accuracy. Any scans affected by vibration or movement were identified and removed during processing.
Accurate As-Built Documentation
The project delivered a highly detailed digital record of one of the UK’s most complex petrochemical facilities.
Improved Maintenance Planning
Engineering teams gained access to accurate facility information for:
- Upgrade projects
- Refurbishment works
- Routing studies
- Clash detection
- Site coordination
Reduced Project Risk
Accurate reality capture reduced uncertainty during planning and helped minimise costly field modifications.
Enhanced Collaboration
The digital models enabled stakeholders to review existing conditions without requiring repeated site visits.
Foundation for Future Digital Operations
The resulting dataset established a trusted digital baseline that could support future digital twin, planning and operational initiatives.
Why Reality Capture Matters in Petrochemical Facilities
Industrial facilities are constantly evolving. Over years or decades of operation, modifications accumulate and documentation often falls behind reality. Without an accurate representation of existing conditions, organisations face increased risk through:
- Design clashes
- Rework
- Schedule delays
- Safety incidents
- Cost overruns
A reality-first approach ensures that engineering decisions are based on what actually exists on site—not what historical drawings suggest exists. For complex facilities such as petrochemical plants, refineries and chemical manufacturing sites, accurate reality capture has become a critical component of safe and efficient operations.
