- Shipyard Modernization
Burns & McDonnell was the prime design-build contractor responsible for the design and construction for this multiphased program in support of General Electric's Electric Boat nuclear submarine construction and maintenance business. Professional services included facility planning, design, and construction of a Controlled Industrial Facility, Submarine Construction Platforms, Off-Hull Submarine Steaming System, and conducting numerous analyses and upgrades to existing facilities.
The Controlled Industrial Facility (CIF) is a reinforced concrete structure designed for radiological containment and is capable of resisting explosive forces. Construction consisted of a main cast-in-place reinforced concrete structure with metal siding exterior finishes and an adjoining pre-engineered metal building. The roof was constructed using precast hollow-core concrete slab panels. Interior spaces consisted of a high bay area, liquid processing area, access point room, gage calibration and chemistry laboratory, mechanical and electrical rooms, and restrooms. The CIF also included the design, fabrication, installation and commissioning of the radioactive liquid waste (RLW) system.
The Submarine Construction Platforms provided for new assembly and submarine construction platforms within the primary submarine assembly facility. The platforms were designed to deliver off-hull utilities, services, equipment, and workforce topside to submarines under construction.
The Off-Hull Submarine Steaming System provides for a new primary steaming system for Electric Boat's nuclear submarines. Supply-side systems were designed and constructed to NAVSEA 9210.36 cleanliness requirements. Following construction, services included boiler boil-out, system blowdown and waste disposal, initial startup, system documentation, and operator training.
The Submarine Facilities Upgrades and Analyses included upgrades to the main and auxiliary seawater systems; facility validation to support NAVSEA certification; facility and utility demolition involving lead paint and asbestos remediation; and making repairs to the high bay door controllers.
- Facility planning
- Field investigations
- Geotechnical investigations
- Cost estimating
- Pre-construction documentation
- Blast resistance/hardening
- Anti-Terrorism Force Protection
- Lead/asbestos pain removal
Features of the Controlled Industrial Facility include:
- Smooth, crack-free concrete surfaces subject to radiological containment suitable for rapid decontamination
- Containment of radiological solid and liquid wastes, including negative pressure ventilation
- Deep foundations and high-capacity building foundations to support heavy vehicular traffic, RLW system tanks, and heavy equipment
- High bay work spaces with a 10-ton nuclear-rated bridge crane
- Controlled area access and control points
- Chemical labs, including gage calibration
- Specialized HVAC systems including HEPA filtration and CRES ductwork
The Submarine Construction Platforms features incorporate:
- Off-hull support equipment
- Workforce and utility brows
- Passenger and freight elevators
- Shore power and other electrical power distribution
- Delivery of ventilation air, compressed air, gases, potable water and DI water to boat topside
The Off-Hull Submarine Steaming System includes:
- A 75,000 pounds/hour boiler
- Steam supply piping, including steam separator to achieve quality standards
- DI water and chemical feed system
- Makeup water tanks and pumping system
- Condensate and recirculation system including DA and condensate return tanks
- Controls and testing, including pressure and flow regulation, steam quality test stations, and chemical feed testing ports