Uranium Processing Facility


3:56 min.

Learn about Y-12’s new story: the Uranium Processing Facility, one of the largest construction projects in Tennessee history. UPF is an essential part of the National Nuclear Security Administration’s modernization efforts.

Current Status

Third-level walls at the Main Process Building (MPB) are well underway with five of 29 placed. Early activities for placing roof steel have started with welding the shear clips that will be placed on the concrete walls to help support the roof. The installation of architectural walls has also started on the first floor of the MPB.

All first-floor pipe rack steel was completed in January and work continues on second floor pipe rack installation, where significant progress has already been made. Heating and ventilation ductwork and fire protection piping subcontractors have also made progress on the first and second levels. The first two process skids have been installed in the building and connection of piping has begun.

Installation of the UPF perimeter security fencing is underway with the concrete foundation and walls placed in the southwest corner of the construction site. This work is part of the MPB scope and will continue to the north and east over the coming months.

The installation of the Salvage and Accountability Building (SAB) girts on the north side of the building will be completed in February. Installation of siding is complete on the east side of the building and crews have begun installing the siding on the south and west sides with the overall building completion forecast for March, at which point the SAB will be fully enclosed.

Pipe and hanger installation work continues to progress on all three floors and electrical installation of supports and cable tray began on the first floor of the SAB. These activities will continue throughout the remainder of SAB construction. In addition, several subcontractors continue to work throughout all three levels on HVAC supports, ductwork, fire protection piping, fireproofing, and interior walls.

Work progresses in the Mechanical Electrical Building (MEB) as the Direct Current Power system was turned over to Startup in January. Focus on electrical systems and piping continues as the piping team successfully executed testing of the process water system, and the electrical team works on turnover activities for three additional systems during the month of February.

The focus at the Process Support Facilities (PSF) remains on achieving the “in the dry” milestone by March. The last concrete placement for the building foundation was completed in January and the over-the-tops tanks are in place. Structural steel is expected to be complete in February, which will open additional work fronts for the siding team.

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