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 2 Project, CIP #670799-100002, in an amount up to $1,142,148.00 for Division of Power.
The City of Columbus, Division of Power (DOP), intends to complete the effort to eliminate the remaining portion of the distribution system based on a 7,200 Volt delta configuration by converting to a 14.4 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 Volt 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 Volt circuits. The existing 7,200 Volt 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 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.
The initial contract funding was done to perform the scope of services included in Phase 1 of the 7221 Voltage Conversion. This the first planned contract modification to perform similar engineering work for Phase 2. The work for Phases 3, 4, and 5 will be funded with future planned contract modifications. DOP expects to issue Requests for Proposals to select an engineering firm to perform the engineering work on Circuits 7220 and 7223.
The Circuit 7221 Voltage Phase 2 project ...
Click here for full text