This document provides details for a federal construction contract opportunity with the Department of the Army Corps of Engineers Engineering District Portland. The solicitation seeks to replace two 90-inch butterfly valves and control unit systems at the Cougar Powerhouse to improve reliability and safety. The valves were originally installed in the early 1960s and all related systems have become increasingly problematic. The project aims to replace the valves servicing the two main generating units that use butterfly valves to shut off the penstock water supply to the turbines. Each penstock is bifurcated into two headers equipped with a butterfly valve to isolate each individual turbine.
