Nebraska Public Power District (DISTRICT) intends to procure helicopter services and all other necessary labor and equipment for the removal of the overhead shield wire (OHSW) insulators at 118 structure locations, removal and replacement of OHSW insulators at three (3) structure locations with DISTRICT provided hardware, and aerial number replacements at 122 structure locations with DISTRICT provided hardware. These services are necessary on one (1) 345kV transmission line, transmission line (TL)3509, located between NPPD’s Keystone and Gerald Gentleman Station (GGS) Substations. It should be noted that TL3509 is a double circuit 345/115kV line for approximately seven (7) miles. All work is scheduled to be completed under de-energized conditions
