John Day Fish Pump Rehabilitation

tation at John Day Dam, Oregon. The proposed project will be a Total Small Business Set-Aside, firm-fixed price (FFP) contract. Background: Prior work on fish pump No.3 included replacement of the lower pump shaft, true-up machining of the upper pump shaft, true-up machining of the upper and lower b

earing mounting flanges and spigot bores on the cover plate and diffuser, and true-up machining of the diffuser extension cone. The propeller itself had its blade tips built up with weld and re-machined a proper clearance (nominally 1/8" ra