Wallops Flight Facility - Restoration of Main Base Electrical Infrastructure

The National Aeronautics and Space Administration (NASA) Goddard Space Flight Center (GSFC) Wallops Flight Facility (WFF) is hereby soliciting information about potential sources for a project that will be broken into two phases.  This project will replace approximately 40,000 linear feet (6.6 miles) of direct burial cable with a new electrical power feeder in conduit using directional boring technology. The work will also include replacing approximately 36 live front air switches throughout the Main Base with more reliable and safer SF6 gas switches. In addition, redundant feeders and looped circuits will be created as part of this project to allow for more flexibility and resiliency during power outages and system maintenance. In order to create the looped circuits the last remaining portion of the old 2400V system that serves the airfield will require upgrading to a 12,470 V, 3-Wire system. This includes replacing all direct burial cables, sectionalized switches, transformers, and other related equipment that make up the 2400 V system. The existing backbone feeder throughout the Main Base is 15 kV, 4/0 AWG copper with the exception of a few sections of the system. These remaining portions shall be replaced with 4/0 AWG feeders.