CX-020887: New ATR Facility Outdoor Transformer Yard Switchgear Building

To safely maintain the new outdoor transformer yard switchgear at the Advanced Test Reactor (ATR) Complex during inclement weather, the proposed action constructs a new facility to house the switchgear. The environmental impacts from constructing the new substation and yard were evaluated in environmental checklist (EC) INL-18-108. The proposed action requires a subsurface investigation prior to locating the building. The proposed PreEngineered Electrical Building (PEEB) will be than 640 ft2 and house the 4.16kV switchgear, protective relays, Process Distributed Control System (PDCS) interface devices, and life safety systems for the ATR transformer yard. The switchgear vendor will engineer and design the building. Preliminary design includes a grounding study.