Replace Substation Alpha Relay B11912 Amendment 0002
This amendment adds Q&A and technical documents related to contractor questions from the mandatory site visit for the Substation Alpha Feeder Protection Relay replacement at Building 11912, Dyess AFB. The contractor will replace two existing relays by installing two Government-furnished GE 850 Feeder Protection Relays and wiring them per NEC/NETA standards. The new relays must be programmed to match the previously installed GE 760 relays using settings provided by the Electrical shop, then tested without load. The contractor must coordinate with the Electrical shop before energizing primary voltage for testing and commissioning. Final commissioning and testing will occur under full base load with witnesses from Electrical, Contracting, and R&O, and power outages for acceptance tests must be coordinated in advance.