Explanation
1. BACKGROUND
This ordinance authorizes the Director of Public Utilities to enter into a contract with GPD Group for professional services and construction services for the Circuit 7221 Voltage Conversion, Phase I project, CIP #670799-100001, in an amount up to $586,042.00.
The City of Columbus, Division of Power (DOP), intends to complete the conversion of the remaining portion of the electrical power distribution system from a 7,200 V delta configuration to a 14.4 kV grounded-wire system. The existing 7,200 V delta system consists of three circuits (Circuits 7220, 7221, and 7223) that originate from the DOP’s 14.4 kV - 7,200 V North Substation. These three circuits are to be converted to 14.4 kV by extending the existing 14.4 kV circuits in the same areas, as necessary, to serve all existing DOP customers on these 7,200 V circuits. The existing 7,200 V equipment shall be replaced as needed, including but not limited to transformers, switches, surge arresters, and other line equipment. These projects will also include circuit extensions and equipment installations to make the DOP power distribution system more robust and reliable upon project completion.
The work to be performed under the GPD contract includes project management, field survey, detailed design, preparation of construction drawings, obtaining permits necessary for the construction work, engineering services during construction, and preparation of record plan drawings.
The Community Planning Area is 99 Citywide.
TIMELINE: The term of the contract will be until the conversion work is complete and accepted by the Division of Power, which is anticipated to be eight years, ending approximately December 2031. The contract work is expected to be done in five phases as shown below:
Phase 1 - January 2024 - December 2026
Phase 2 - January 2025 - December 2027
Phase 3 - January 2026 - December 2028
Phase 4 - January 2027 - December 2029
Phase 5 - January 2028 - December 2031...
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