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Case Studies - Dixie Southern



Location:  Tampa Bay, Florida
Architectural/Engineers:  Dixie-Southern
General Contractor:  Veolia Water North America
Application:  Large Diameter Steel Pipe (42″ – 84″ diameter)
Material:  316L Stainless-Steel

The project consisted of fabricating 650′ of large-diameter stainless-steel pipe ranging from 42″ to 84″ in diameter. The pipe is designed to carry drinking water treated with an ozone injection system that removes hydrogen sulfide, improving the taste and smell.

Dixie-Southern’s engineering team made recommendations on saddle and anchor bolt placement & design plus additional pipe fabrication design thicknesses. Additional components were recommended to ensure the system was designed and fabricated to the highest standards, quality and mechanical integrity.

Dixie-Southern utilized an automated, high deposition submerged arc process to weld all circumferential and longitudinal seams on the pipe, producing a high quality, uniform weld with excellent aesthetic quality and mechanical strength. The pipe was 100% x-ray tested with no failures and fully passivated.

Dixie began delivering 80′ sections of the stainless-steel pipe in July 2012. Once on site, Dixie-Southern welders and project managers worked closely with Veolia Water, the General Contractor, to ensure field weld procedures were being properly administered.

The project was completed in late October 2012 with final delivery and installation of the four 90 degree elbows that were used to connect the four long-runs of stainless-steel pipe. Testing and startup was completed in June 2013. Water customers in the south-central Hillsborough communities of Apollo Beach, Brandon, Riverview, Ruskin and Sun City Center began receiving water with improved taste and smell in early July.