S3i performs service and maintenance on production and process equipment for the Canadian heavy industry. Whether for emergency or scheduled work, S3i is standing by to help you. Our dedicated project managers and supervisors are backed by a multidisciplinary team to help you develop your solutions, whether it be estimating your budget or recommissioning your system, or even engineering, site surveys, 3D design, manufacturing, and installation, depending on your needs.

Mechanics – Pipe fitting – Boilermaking – Welding – Insulation

Industrial service and maintenance: full support

Over the years, S3i has built a solid reputation within the industry and with its customers, by delivering quality projects safely, on budget, and on time. But most of all, the S3i team is known for advising its customers and proposing effective, economical solutions that benefit its partners.

- Emergency work

- Project planning and scheduled shutdowns

- Scheduled shutdown work

- Design and manufacturing

- System optimization

- Equipment and systems refurbishment

- Replacement of process parts or sections

- Preventive maintenance

Replacement of housing on induced draft fan, boiler #1
Pulp and paper
Trois-Rivières, QC, Canada
Maintenance work on a crusher
Mines and quarries
Fermont, QC, Canada
Replacement of bull gear #3-6
Mines and quarries
Fermont, QC, Canada