NGSB Panel Shop Improvements

Northrop Grumman Shipbuilding contracted with BKI to provide engineering design and construction management services for improvements to the Pascagoula Shipyard.

The project was designed to include individual foundations and utilities for new equipment in a new building addition totaling 120,800 SF. Two 150 ton cranes are installed along with one 100 ton crane installed in a high bay area, 108' high, and a 20 ton mag crane is installed in the 46' high section. A 38' x131' extension was also designed for office space and is environmentally controlled.

The building foundation is comprised of a pile supported building floor slab, rated for a maximum live load of 250 psf. All custom equipment foundations were also designed as a pile supported reinforced concrete foundation and were design for specific equipment loading & vibration. The building structure was designed in accordance with the International Building Code, 2006 Edition; and ASCE 7-05. The new cranes were supported by crane rails and girders designed in accordance with the latest edition of the CMAA (Crane Manufacturers Association of America.)

The electrical scope of this project included the design of the power distribution system, grounding, high bay lighting, office space lighting, emergency egress lighting, and fire alarm system.  All major electrical distribution system components including but not limited to unit substations, distribution panelboards, lighting panelboards, and transformers were elevated on raised platforms to offer a degree of protection against future storm surge events in the Gulf Coast area. 

The new Panel Line Shop Extension project also included the installation of various machines required by NGSB-GC for their production process. The equipment ranged from small welding stations to a Linsinger Plate Edge Milling Station. Some of the larger pieces of equipment installed in the Panel Line Extension that required custom foundations were a Hydraulic Press Brake (Pacific K500-22/20), ESAB Welding and Cutting Machine (Avenger 4-22), a Plate Edge Milling Station (Linsinger) and an Insert Service Gantry Assembly (Ogden).