RFI Blade Seals - LLA Discharge Ring and Cavitation Repair

The U.S. Army Corps of Engineers, Walla Walla District, is seeking information from responsible sources who can provide alternative blade seals that meet the rigorous dimensional tolerances, material compositions, and exact fit requirements strictly necessary to prevent oil leakage. The project involves the replacement of turbine blade runner packing seals across all six main units at the Little Goose Turbine Discharge Ring Upgrade and Blade Cavitation Repair. The Government intends to specify the use of highly specific, proprietary materials: James Walker brand Turbine Blade Runner Back-to-Back Packing. Interested parties must provide a statement of capability with clear and convincing evidence demonstrating that their proposed alternative seals can match the precise strength, rigidity, and exact shape dimensions required. Key points to consider: • The requirement consists of 36 seal stacks utilizing proprietary shape dimensions, Type 3 Acrylonitrile/butadiene based synthetic rubber headers, and NM59-74/80 Acrylonitrile/butadiene based synthetic rubber intermediate rings and glands with a nominal Durometer of 80 IRHD. • The statutory authority for this brand-name restriction is 10 U.S.C. 3204(a)(1) as implemented by RFO FAR 6.103-1(b) Only One Responsible Source and No Other Supplies or Services Will Satisfy Agency Requirements. • The Government is seeking information from responsible sources who can provide alternative blade seals that meet the rigorous dimensional tolerances, material compositions, and exact fit requirements.