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Services:
Tunnel Hyperbaric Support
 
 












A world leader in Tunnel Hyperbaric Support

Providing support for many of the worlds largest and most complex tunnels around the world places Ballard Marine Constructions tunnel division as a world leader in this industry. Our experienced tunnel team is on hand to support projects from the earliest stages of concept design, proposal stages as well as emergency support services.

We can assist you in keeping costs down in addition to facilitating regulatory interaction. For over 40 years, we have set a standard in both dependability and most importantly safety. Highlighted Tunnel Support Services:

Consultation & Site Assessments
Ballard offers onsite inspections of your facilities to ensure compliance with applicable local and federal regulations as they apply. This will include developing variances for equipment, saturation storage depths, decompression tables and emergency protocols.

Formulating project hyperbaric manual (sir, mixed gas or saturation mode)
Obtaining variances for alternate tables
Mixed gas and saturation intervention work
Data analyses
Client liaison
Occupational health and safety implementation
Consultation on airlock system design
Audit/appraisal
Environmental controls
Training of contractor personnel
Hazard / health and safety analysis
TBM intervention
Working at altitude
Construction in compressed air
Emergency and confined space rescue

Compressed Air Interventions
Ballard provides inspection, maintenance and repair in compressed air environments. Our project managers have performed thousands of tunnel interventions around the world. Our crews are efficient and effective, allowing TBMs to do what they do best - get back to mining.

Experience means we have performed interventions at extreme pressures, utilizing standard or custom-designed exotic gas blends like Heliox and Trimix. Positions Related to Compressed Air Interventions Include:

Compressed air workers
Manlock attendants
Certified welders
Intervention supervisors
Hyperbaric medics
Mixed gas workers
Intervention projects managers
Medical lock attendants
Physicians/physicians' assistants
Mixed gas supervisors
Saturation technicians / workers
Hyperbaric shuttle attendants
Life support technicians for saturation operations
Saturation supervisors

Wet (Slurry) Diving Interventions
Ballard Marine Construction employs the world's most experienced commercial divers to perform wet, slurry and Bentonite diving operations. Each are trained ADCE, journeyman level tradesman. Underwater Tunnel Support Services:

Special Bentonite dive tables
Jack pack / block out entry and clean-out
Installation of rods into lenton fittings (zero visibility)
Dredging / air lifting
Tying underwater rebar, install rebar mats for tremie plug
Installation of water stop injection tubing around perimeter of shaft prior to installation of tremie plug
Underwater video inspection of flooded shafts and tunnels
Sonar inspection of flooded shafts and tunnels
Pressure grouting, concrete placement
Concrete demolition
Erection of structural steel
Drilling and blasting overburden

Training
International project experience has allowed us to develop the appropriate curriculums and provide the required training to tunnel hyperbaric teams and support crews. Our qualified and experienced trainers can work with your team, or local work force for project support for work up to 4 bar and under. Work above that threshold falls to the Ballard Marine Tunnel Support team.

Medical Support
Our tunnel division employs experienced supervisory personnel in addition to a full complement of qualified Compressed Air Workers, Dive Medical Technicians, Hyperbaric Nurses, Hyperbaric Physician Assistants and other specialty personnel.

Medical Support
Our tunnel division employs experienced supervisory personnel in addition to a full complement of qualified Compressed Air Workers, Dive Medical Technicians, Hyperbaric Nurses, Hyperbaric Physician Assistants and other specialty personnel.

Specialized TBM Hyperbaric Equipment & Related Tooling
Our team understands the unique applications of the equipment. Understanding and purchasing the correct equipment before you begin can save you costly down time when your tunnel project is underway. Our equipment is often universal to the major MTBM and TBM manufacturers of the world. Ballard Marine Construction specializes in Earth Pressure Balance (EPB), Full Face, Open Mode and Dual Purpose projects. Highlighted Equipment and Related Tooling include:

Special decompression chambers (that meet tunnel industry regulatory requirements)
SAT (tunnel specific - saturation diving chambers)
Medical locks
Man locks
Shuttles with locks (darts)
Hydraulic tools for breaking rock and sediment removal
Hyperbaric welding equipment
Rail mounted grade D breathing air compressor package
Communication systems
HD video
Mixed gas integration into the TBM system
Compressors
 
 
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