- Home
- Companies
- ASI Group Ltd.
- Services
- Marine Construction Services
Marine Construction Services
Our team of highly experienced and trained commercial divers take great pride in providing the required underwater and marine support needed to build the underwater structures of tomorrow. Our commercial diving division is one of the largest inland commercial diving teams in Canada. ASI’s divers have worked closely together for an average span of 10+ years. Having great working relationships and an intimate knowledge and understanding of your teammates allows for a cohesive and professional quality of work. Our divers perform their tasks with 100% confidence knowing their fellow team members are watching out for their safety. This allows our diving teams the ability to develop structured and safe operational working plans focused on project goals to achieve project completion in the safest and most time efficient manner, in support of marine construction.
ASI has been planning and managing successful commercial diving operations in support of marine construction for over 30 years. ASI is extremely proud of its risk-averse culture. Safety is at the forefront of all we do. As part of ASI’s Health & Safety procedure, ASI identifies all and every potential risk, through mitigation and risk management we eliminate each risk and adhere to the highest safety standards and best practices. Prior to the commencement of any field and diving operation, ASI conducts an extensive Hazard Identification and Risk Assessment (HIRA). As a result of our thorough planning and procedure implementation, ASI has had minimal injuries and zero fatalities.
ASI provides a number of key services to support the marine construction industry. These services include but are not limited to:
- Underwater welding and cutting (structural welding – Lloyds Class certified)
- Grout injection and tremie concrete placement
- Underwater form work
- Bulkhead and cofferdam installation and sealing
- Dewatering
- Salvage and debris removal
- Pre-construction inspection and as-built inspections
- Pipeline cleaning and remediation
- Chlorine injection line installation (and removal of old systems)
- Installation of new or refurbished travelling screens
- Wood and steel pile repair
- Valve installations
- Support installation of new water intakes and outfalls
- Above water installation of wharf and dock fenders
- Support shoreline refurbishment and protection
Pretty much any construction task that is conducted above water, can also be performed below water with ASI’s specialty underwater tooling. For example, drilling and anchoring, welding and cutting, concrete coring, concrete cutting, grinding and pressure washing to name a few. As an additional benefit, our commercial divers have the support of our purpose-built vessels, from 25-foot trailer-able vessels to our 70-foot tug the ASI Clipper. Our divers also collaborate with, our Remotely Operated Vehicle (ROV) inspection group and hydrographic surveying teams. There is no job too challenging for our commercial diving and management team.
Supporting dam construction work and repair, ASI’s team has extensive knowledge and experience working on various dam structures. Our commercial divers can perform and support the most complex projects:
- Concrete repairs, upstream and downstream, spillways, piers and tailraces areas
- Cofferdam installation and de-watering
- Valve installation and repairs
- Trash rack installation and repairs
- Stop log installation and repairs
- Debris removal and dredging
- Temporary dam, install stop logs to stop flow of water
- Remote pre-construction/repair inspection and 3D modeling
- Post construction/repair as-built inspections
ASI has worked closely with many municipalities and engineering consultants to provide construction and maintenance services for water and wastewater treatment plants. Our services help municipalities to ensure their systems are well built and are in good working order to avoid any disruption to service. These services include:
- Installation of chlorine treatment systems and lines
- Vale installation maintenance for discharge pipes, raw water intakes and clear wells
- Travelling screen installation, repair and maintenance
- Pump installation, repair and maintenance
- Water intake structure (new installation) and existing repair and maintenance
- Outfall structure diffuser installation, repair and maintenance