Supplemental Drawings.pdf

This document is a technical specifications and parts index file for federal hydroelectric dam equipment, specifically detailing components for the fish ladder water supply system at Lower Granite Dam and John Day Dam.

The file contains engineering drawings and parts documentation for 800/350 horsepower, three-phase induction motors manufactured by Hitachi Limited and The Ideal Electric & Manufacturing Company. Contract numbers referenced include 68-C-43SD for Lower Granite Dam equipment and DA-45-164-CIVENG-66-142 for John Day Dam motors (outline drawing 17285-5). The documentation includes detailed sectional drawings of motor components, parts lists with locations, specifications for bearing types, insulation classes, winding configurations, and mechanical assembly details. Specifications indicate motors designed for continuous duty at elevated temperatures with ambient conditions up to 40°C, rated for 50 cycles and three-phase operation. Supporting documents include certification records from The Ideal Electric & Manufacturing Company in Mansfield, Ohio, dated March 3, 1966, and engineering notes specifying construction standards per U.S. Army Engineer District requirements. The materials indicate these motors were integral to water circulation systems supporting fish passage infrastructure at multiple U.S. Army Corps of Engineers dam facilities. All documentation appears to be classified as "As Constructed" engineering records, reflecting the actual equipment installed at the respective dam sites.