Dismantling site
Colas, with Premys, supports industrial companies in dismantling installations, production lines, and utilities, including in high-constraint environments, ensuring safety, regulatory compliance, and maximum material recovery.
We provide a turnkey operation, carefully managed at every stage, to secure the end of life of your equipment while optimizing the environmental performance of your site.
Our areas of expertise
On industrial sites, every dismantling operation requires advanced technical expertise, risk management, and seamless coordination with operators. Our teams work on all components of an installation, adapting methods to the site’s specific constraints.
This comprehensive approach allows us to carry out industrial deconstruction projects safely, efficiently, and in full compliance with current regulations.
Process equipment dismantling
Pumps, heat exchangers, conveyors, hoppers, silos, refrigeration units… We handle all process equipment, from removal to cold cutting. Our teams are experienced in the constraints of sensitive industrial environments, including ATEX zones and areas with concurrent activities.
Each operation is carried out according to strict protocols: preliminary lockout, management of mechanical and chemical risks, waste traceability, and real-time coordination with on-site teams. This approach ensures dismantling that is fast, controlled, and completely safe.
Networks and utilities
We ensure the dismantling and neutralization of fluid, steam, electricity, and HVAC networks, as well as associated tanks and piping. Each intervention is based on a rigorous methodology: lockout/tagout of installations, inerting of lines, and prior purging and decontamination to eliminate any residual risk.
Our teams operate in active industrial environments, integrating production continuity requirements and the safety constraints specific to each site. The objective: to guarantee a clean, controlled operation that complies with current regulations.
Metal structures and associated civil engineering
We handle the dismantling of frameworks, walkways, metal structures and civil engineering works. The work includes cutting, lifting, heavy handling and controlled removal operations. Thanks to specialized equipment — aerial work platforms, cranes, gantries, custom lifting systems — we operate in constrained areas or at height, while ensuring the safety of the teams and the stability of surrounding structures.
This comprehensive expertise allows us to clear the spaces, reconfigure the sites and effectively prepare for future phases of work or reconstruction.
A controlled process in 7 steps
Circular economy and environmental performance
In the context of our industrial dismantling operations, we place material recovery at the heart of the project to reduce environmental impact and optimize resources. We identify equipment and materials that can be reused, organize the sorting and recovery of metals and non-hazardous waste, and guarantee their orientation toward suitable channels.
This circular economy approach is accompanied by comprehensive environmental reporting, with performance indicators to ensure precise traceability and maximize the environmental benefits of the site.
Health, safety and regulatory compliance
Safety is a priority challenge on every industrial dismantling operation. Premys applies strict procedures to control risks, ensure the protection of teams and guarantee total regulatory compliance, including on active sites or in sensitive areas (icpe, atex). Our interventions are based on a comprehensive prevention framework:
- Prevention plans and fire permits adapted to the configuration of each site.
- Personal protective equipment (ppe) and reinforced safety devices.
- Monitoring of nuisances: noise, dust, vibrations, dust levels.
- Trained and certified teams, authorized to intervene in regulated environments.
- Documentary traceability and regular inspections to guarantee safety, quality of execution and compliance with deadlines.
This rigorous organization ensures controlled dismantling, in line with regulatory requirements, while preserving business continuity when the site remains in operation.
Interventions adapted to each sector
Our interventions cover many sectors:
- Chemistry & pharmacy: dismantling of sensitive production units, interventions in risk areas or under controlled atmospheres.
- Agri-food: operations under coactivity, with partial maintenance of production and control of sanitary constraints.
- Energy & logistics: dismantling of complex infrastructures, redevelopment and preparation for site reuse.
Frequently questions
Dismantling applies to technical installations and process equipment, while demolition concerns building structures.
From the risk study to the final sorting of materials, a 7-step process guarantees safety, compliance and recovery.
These operations are carried out before any cutting to secure the circuits and avoid any risk of explosion or pollution.
Yes. Thanks to rigorous coactivity management and localized containment zones, production can be partially maintained.
Tell us about your project
Do you have a factory or industrial equipment dismantling project?
Our teams support you with a personalized and secure diagnosis.
