Our team was the prime engineer-procure-construct (EPC) contractor for upgrades to a brownfield substation required for a new customer line. The scope included a new 230-kV line terminal along with removing the bus tie bay and adding a new bus tie. Additional scope included replacements including: 115-kV breakers, switches and metering CTs; 115/69-kV transformer replacement; 69-kV bus PT, and full rigid bus replacement.
An aggressive schedule was the main challenge for this project. The customer portion of the schedule needed to be energized in 11 months from time of award. The remainder of the project was energized in 12 months. Another major obstacle in meeting project goals were the significant number of outages required along with work in multiple areas of the yard.
This substation is critical to many of BPA’s customers, which required flexibility to schedule outage time frames. Additionally, the team's ability to split the overall project into linear patches of work allowed it to meet the schedule goals.