Customer: Progress Energy
Site: Brunswick Nuclear Plant, Southport, NC
Project Scope:
NFS-RPS designed, engineered and delivered a mobile shield wall comprised of eight panels with a track. Each panel weighs approximately 5,000 pounds and is fabricated using 2” of sheet lead and 5” polyethylene and borated polyethylene for neutron shielding.
Requirements & Features:
The goal was to provide a removable shield wall to replace existing high density concrete block bio-shield wall during scheduled outage.
Gamma and neutron dose rate was reduced to less than 1 mrem/hr on backside of wall, exceeding concrete block bioshield wall attenuation.
Exposure saving estimated to be 33 man-rem for removal of wall alone.
750 man-hours saved on critical path by avoiding the dismantling and reassembly of block wall.
Wall is capable of being moved quickly and placed in temporary storage not to interfere with outage personnel traffic flow.
Wall is seismically qualified for permanent installation.
