Commercial Diving Built on Safety, Training, and Compliance
Brennan provides commercial diving backed by certified personnel, advanced training, rigorous safety standards, and proven practices for complex underwater work.
Built for Complex, Safety-Critical Underwater Work Dive Safety & Compliance Services
Commercial diving is never routine. Every dive requires careful planning, clear communication, trained personnel, properly maintained equipment, and a complete understanding of the hazards above and below the waterline.
Brennan is built for that responsibility.
Our divers are Association of Diving Contractors International-certified, fit-to-dive, and trained through the United Brotherhood of Carpenters. In addition to post-dive-school training from the UBC, Brennan divers complete advanced training in our own dive tank, helping prepare crews for the complex underwater environments they encounter in the field.
Commercial Diving Built Around Safety-Critical Standards Areas of Focus
Brennan provides commercial diving services backed by trained personnel, proven safety standards, disciplined planning, and compliance-focused execution for complex underwater environments.
Proven Standards for Complex Dive Operations Safety & Compliance Standards
Brennan’s dive operations comply with US Coast Guard, federal and state OSHA, ADCI, International Marine Contractors Association, and US Army Corps of Engineers EM 385-1-1 standards. Brennan is also prequalified with ISNetworld, Avetta, and Veriforce.
These standards help guide the way our teams plan, staff, equip, execute, document, and improve every dive operation.
Key Compliance Areas
- US Coast Guard standards
- Federal and state OSHA standards
- ADCI certified
- International Marine Contractors Association (IMCA) standards
- US Army Corps of Engineers EM 385-1-1 standards
- ISNetworld prequalification
- Avetta prequalification
- Veriforce prequalification
- Project-specific safety requirements
- Facility-specific safety and quality requirements
- FERC Part 12 inspections
Experienced Personnel for Demanding Underwater Environments Certified Divers & Supervisors
Brennan holds its company and divers to the highest safety and quality standards. Dive crews are built around trained personnel who understand the risks of underwater construction, inspection, repair, and specialty work.
A typical Brennan dive crew consists of at least four members, supporting safe communication, task execution, emergency readiness, and operational control. Brennan Dive Supervisors also pass the ADCI Supervisor exam with Nitrox Endorsement.
Personnel Standards
- ADCI-certified commercial divers
- Fit-to-dive personnel
- UBC-trained divers
- Post-dive-school UBC training
- Advanced training in Brennan’s dive tank
- Dive Supervisors with ADCI Supervisor exam completion
- Nitrox Endorsement for Dive Supervisors
- Typical crews of at least four members
- Experienced crew roles and supervision
- Field-tested communication and coordination
Preparing Crews Before They Enter the Water Required Training & Certifications
Our divers are trained to operate in complex underwater environments, including active waterways, industrial facilities, infrastructure sites, contaminated conditions, and safety-critical facilities.
Brennan requires First Aid, CPR, Oxygen Administration, HAZWOPER, and OSHA Construction Safety and Health certifications for dive personnel. These requirements help ensure crews are prepared not only for the task itself, but also for the hazards and emergency-response needs that may surround the work.
Required Training Includes
- First Aid
- CPR
- Oxygen Administration
- Hazardous Waste Operations and Emergency Response
- OSHA Construction Safety and Health
- Dive-specific hazard awareness
- Emergency response planning
- Equipment procedures
- Site-specific safety orientation
- Project-specific safety planning
Reliable Gear for Demanding Conditions Equipment Standards
Safe dive operations depend on more than trained divers. They also require properly selected, maintained, and inspected equipment that is suited to the task and site conditions.
Brennan follows stringent diver equipment standards and plans equipment needs around each project’s environment, depth, visibility, access, hazards, and scope of work.
Equipment Planning Supports
- Commercial diving operations
- Underwater construction
- Underwater inspections
- Near-zero-visibility work
- Contaminated or HAZMAT environments
- Confined or limited-access areas
- Intake and outfall systems
- Pipelines and discharge structures
- Marine infrastructure
- Safety-critical facility work
Approved for Safety-Related Work Nuclear Quality Assurance & Safety-Critical Work
Some underwater work requires an elevated level of quality assurance, documentation, and regulatory compliance. Brennan’s Nuclear Quality Assurance program is approved to perform safety-related work in accordance with ASME NQA-1, 10 CFR 50 Appendix B, and 10 CFR Part 21.
This supports Brennan’s ability to perform work in safety-critical environments where precision, traceability, accountability, and compliance are essential.
Safety-Critical Support
- Nuclear facilities
- Hydroelectric facilities
- FERC Part 12 inspection support
- Mines
- Oil, gas, and petrochemical facilities
- Safety-critical infrastructure
- Regulated industrial environments
- Project-specific quality requirements
- Detailed documentation and reporting
- Compliance-focused execution
Underwater & Above-Water Construction Backed by Qualified Professionals Certified Underwater Welding Support
Brennan’s dive team includes certified underwater welders, including American Welding Society Certified Weld Inspectors and Certified Welders.
That capability is especially important for underwater construction, marine repairs, industrial infrastructure, dam work, intake systems, outfalls, pipelines, and other assets where inspection, repair, and construction may be closely connected.
Underwater Welding Support May Include
- Underwater construction support
- Marine infrastructure repairs
- Intake and outfall support
- Pipeline support
- Dam and gate-related work
- Structural repairs
- Inspection-informed repair planning
- Coordination with engineers and facility teams
Support for Critical Assets Above & Below the Waterline Dive Safety Across Water-Based Infrastructure
Brennan provides dive safety and compliance support across a wide range of infrastructure types. Our divers understand the conditions, hazards, and structural systems associated with water-based infrastructure, including dams, bridges, barge and shipping terminals, piers, industrial docks, and essential infrastructure.
Infrastructure We Support
- Dams
- Bridges
- Barge terminals
- Shipping terminals
- Piers
- Industrial docks
- Essential water-based infrastructure
- Ports and harbors
- Marine construction sites
- Waterfront facilities and more
Safety-Focused Dive Support for Critical Flow Infrastructure Intake & Outfall Systems
Intakes, outfalls, pump stations, cooling systems, traveling water screens, valves, seals, pipelines, and discharge structures often require dive crews that can operate safely around flows, confined areas, debris, limited visibility, and facility operations.
Brennan plans these dives around site-specific hazards, operational controls, lockout/tagout requirements, communication needs, and the documentation required by owners and engineers.
Key Capabilities
- Pump station dive support
- Cooling system inspections
- Traveling water screen support
- Valve and seal inspections
- Pipeline inspections and repairs
- Discharge structure inspections
- Intake and outfall work
- Safety planning around flow systems
- Underwater documentation
- Maintenance and repair support
Safety Planning for Non-Routine Underwater Work Specialized Dive Services
Some underwater work involves unique risks that require additional planning, specialized training, and experienced supervision. Brennan supports specialized dive services including submarine cable touchdowns, ship husbandry, historical artifacts, extreme HAZMAT diving, fish protection, diver-assisted dredging, maritime security barriers, and salvage operations.
Specialized Capabilities
- Submarine cable touchdowns
- Ship husbandry
- Historical artifact support
- Extreme HAZMAT diving
- Fish protection
- Diver-assisted dredging
- Maritime security barriers
- Salvage operations
- Unusual access conditions
- High-risk underwater environments
Better Visibility Before & During the Work Advanced Technology for Safer Dive Planning
Technology helps Brennan improve dive safety, efficiency, and decision-making. Brennan uses detailed underwater inspections, imaging in near-zero visibility, surveying, remotely operated vehicles, and high-quality deliverables to support complex dive operations.
These tools can help identify hazards before divers enter the water, support real-time decision-making, document conditions, and improve the quality of final reporting.
Technology Support May Include
- ROV inspections
- Advanced underwater imaging technology
- Near-zero-visibility inspection support
- Hydrographic survey
- Acoustic imaging
- Video and photo documentation
- Stereo cameras
- Pre-dive planning support
- Condition assessment support
- Final reporting and deliverables
A Commercial Diving Partner Built for Complex, Safety-Critical Work Why Brennan for Dive Safety & Compliance?
Dive safety is not a checklist at Brennan. It is built into how our teams are trained, equipped, supervised, and supported.
From crew size and certifications to compliance standards, equipment requirements, NQA approval, and advanced technology, Brennan brings a disciplined approach to every dive operation. That matters when the work involves critical infrastructure, regulated facilities, low-visibility conditions, HAZMAT environments, or underwater systems that must perform reliably.
What Sets Brennan Apart
- One of the largest, highly trained union dive teams in the country
- Award-winning safety performance in safety-critical environments
- Collaborative, honest delivery with owners, engineers, suppliers, contractors, regulators, and stakeholders
- Post-dive-school training and advanced training in Brennan’s own dive tank
- Dive operations aligned with USCG, OSHA, ADCI, IMCA, and USACE EM 385-1-1 standards, and ISNetworld, Avetta, Veriforce prequalification
- Certified underwater welders, AWS Certified Weld Inspectors, and AWS Certified Welders
- Advanced technology for near-zero-visibility inspections, ROV support, survey, and high-quality deliverables
Total Quality Management Across the Organization
- ISO 9001 (Quality Management Systems)
- ISO 14001 (Environmental Management)
- ISO 45001 (Occupational Health and Safety Management)
- ASME NQA-1 (2022), 10 CFR 50 Appendix B, and 10 CFR Part 21
Whether your project requires commercial diving, dive construction, underwater inspection, safety-critical facility support, HAZMAT diving, intake or outfall work, infrastructure repair, or advanced underwater documentation, Brennan has the trained personnel, safety systems, and field experience to help.
