The intent of this specification is to set out minimum requirements for the construction, retirement and installation of electric transmission facilities that meet the construction standards of Lincoln Electric System (LES). This specification covers the retirement, construction, assembly, and installation of the poles, insulators, conductor, shield wires, and other hardware items of the LES transmission project(s) included in this contract. It shall be the responsibility of the contractor to review the drawings and visit the construction site to determine any adverse conditions and to take into consideration all details of the construction which are not covered in this specification.
All lines to be constructed with self-supported galvanized steel monopoles. Phase conductors are a combination of bundled 397.5 26/7 T2 (Ibis), bundled 954 45/7 Rail, and single 954 45/7 Rail. Shield wires are a combination of OPGW and 7#8 Alumoweld. Phase conductors will be supported by polymer suspension insulators, braced post insulators, and glass deadend insulators. All transmission corridors will be acquired and cleared of vegetation prior to construction. All work is expected to fall within the Completion Schedule provided in writing by LES. 345kV L1485 - WO: 5039136: Install new transmission line consisting of 1.1 miles of 345kV construction, 0.5 miles of which is double circuit with 115kV L1315. Retire approximately 0.7 miles of 345kV transmission line south of the new 56th & Bluff Substation which is double circuit with a 115kV line. Six steel double circuit tangent structures will be removed. To the extent practical, the existing line shall be left in place until the new line is nearing completion in case it needs to be reenergized in short notice. 115kV L1315 - WO: 5039137: Install new transmission line consisting of 0.7 miles of 115kV construction, 0.5 miles of which is double circuit with 345kV L1485. 115kV L1369A - WO: 5039137: Install new 115kV transmission line consisting of approximately 0.6 miles of 115kV construction. 115kV L1375 - WO: 5039137: Install new 115kV transmission line consisting of approximately 3.3 miles of 115kV construction. L13C104 T/C/D, L13C106 T/C/D - WO: 5039147: Install new 115kV transmission lines consisting of 0.6 miles of new single circuit 115kV construction. West Perun substation may not be ready for the final spans as part of this project. Overall Construction Window: January 3, 2025, to October 2, 2026 Question Deadline 09/17/2024 at 4:00 PM CT All questions must be submitted through this ONLINE under the clarifications tab.
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