Explanation
1. BACKGROUND
This ordinance authorizes the Director of Public Utilities to enter into a planned contract modification for professional engineering services with GPD Group. for the Circuit 7221 Voltage Conversion Phase 3 Project, CIP #670799-100003, in an amount up to $1,435,327.00 for the Division of Power.
The City of Columbus, Division of Power (DOP) intends to complete the ongoing effort to eliminate the remaining portion of the distribution system based on a 7,200 Volt (V) delta configuration by converting to a 14.4 Kilovolt (kV) grounded-wye system. The existing 7,200 Volt 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 this contract modification includes project management, field survey, detailed design, preparation of construction drawings, obtaining any permits necessary for the work, engineering services during construction, and preparation of record plan drawings.
Phases 1 and 2 of the CIP 7221 Voltage Conversion Project are currently in design, with 90% design work completed for Phase 1 and 60% completed for Phase 2. This is the second of the four (4) planned contract modifications to add funding to perform similar engineering work for Phase 3. Phases 4 and 5 will be addressed under future planned contract modifications. DOP expects to issue a future Request for Proposals to select an Engineer to perform the ...
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