Site work for a power facility in Indianola, Iowa. Completed plans call for site work for a power facility.

The contract includes providing materials and performing work necessary to replace two existing 69kV circuit switchers with circuit breakers, including testing and commissioning on two 69-13kV transformers at the East Iowa Substation, 1300 E. Iowa Avenue, Indianola, IA. Each bid must be accompanied in a separate envelope by a bid bond, certified check or cashier's check drawn on a State of Iowa or federally chartered bank, or a certified share draft on a State of Iowa or federally chartered credit union, in an amount not less than five per cent (5%) of the total value of the Proposal, and made payable to the Buyer as a security that the bidder will enter into a contract for the Work within ten (10) days after the award of the contract to such bidder. Bidders shall not be permitted to withdraw their bids for a period of sixty (60) days after they are opened. IMU reserves the right to reject any or all proposals and to waive informalities. Published upon order of the Board of Trustees Indianola Municipal Utilities, Indianola, Iowa. 1.1 The Project includes providing labor and material to replace two existing 69kV circuit switchers at the East Iowa Substation with circuit breakers. The East Iowa Substation is located within the City of Indianola, Iowa. This project includes furnishing miscellaneous materials, labor, tools, equipment, supervision, and other items necessary to complete the entire project defined in these bid documents. 1.2 In addition to the removal of the circuit switchers and installation of the new circuit breakers, the Project includes testing necessary to assure correct operation of the new circuit breakers and associated protection schemes, modify data concentrator programming using configuration files provided by Engineer, verifying that the impacted scanned points are correctly provided to the SCADA system data concentrator, and that control points operate correctly. SCOPE OF WORK 2.1 The drawings, bill of materials, and specifications listed in the Index in Section 00000 are intended to cover all materials, equipment, and work necessary to complete this project as described, except for those items that are specifically listed as being supplied or completed by Owner or by others, and except for problems with the existing substation schematics and wiring diagrams. 2.2 The existing substation drawings are not complete and have not been updated to include modifications. Contractor shall include time to thoroughly trace all circuits impacted by the replacement project and document deviations from project drawings. Deviations shall be provided to Engineer for resolution. Change orders will be considered for major deviations. Change orders will not be considered for minor changes only requiring jumpers within the same or adjacent switchgear cubicles. 2.3 Work generally consists of the following major items of work but is not limited to the items listed below. Refer to drawings for plans and details and definition of the work to the extent possible. a. Contractor shall schedule preconstruction meeting within two weeks after receiving Notice to Proceed. Meeting will be held at Indianola Municipal Utilities. A virtual preconstruction meeting will not be acceptable. b. Furnish labor and materials as required. c. At East Iowa Substation: 1) Order materials 2) Preschedule outages per Section 01001 Sequence of work. 3) Trace existing circuits, verify accuracy of existing schematics and wiring diagrams, resolve discrepancies with Engineer. 4) Remove existing circuit switchers CK601 and CK602. 5) Remove existing control and AC and DC supply cables between CK601 and CK602 and the switchgear buildings. Cut conduits off and cap conduits below grade, seal ends in switchgear building. 6) Remove existing buswork between the main east-west bus and the existing circuit switchers as shown on the plan and section view drawings. 7) Install disconnect switches on existing steel structures. 8) Install support insulators on the existing steel structures as shown on the plan and section view drawings. 9) Connect disconnect switches to existing east-west buswork and new circuit breakers. 10) Connect circuit breakers to voltage and current transformers and power transformers as shown on the plan and section view drawings. 11) Install 3" PVC conduits between CK601 control cabinet and East Iowa #1 (east building) and between CK602 control cabinet and East Iowa #2 (west building). 12) Bond circuit breakers and disconnect operators to existing ground grid. 13) Install permanent CT shorting jumpers in the CK601 and CK602 control cabinets. 14) Install and connect new control and AC and DC supply cables to CK601 and CK602 as shown on the drawings and cable schedule. 15) Install 12 pole GE EB25B12 terminal block in East Iowa #1 Station Power cubicle. 16) Modify cubicle wiring in the East Iowa #1 Intertie, Station Power and Auxiliary cubicles and Relay Panel #1. 17) Install 12 pole GE EB25B12 terminal block in East Iowa #2 relay panel. 18) Modify wiring in East Iowa #2 relay panel and intertie cubicle. 19) Install settings in SEL annunciator panels in CK601 and CK602 control cabinets. Annunciator settings will be provided by Engineer in .rdb format. 20) Test and commission new equipment and circuits that are impacted by changes. This includes CK601, CK602, CK230, and CK240 trip and close circuits. 21) Apply configuration changes to existing RTUs using configuration files provided by Engineer. 22) Assist as needed during testing to verify SCADA system additions and deletions 2.4 Contractor shall test phasing before beginning removal work and confirm phasing immediately after reenergizing each transformer and before supplying load. 2.5 Contractor will furnish all equipment and materials required to complete the Work except for the circuit breakers and disconnect switches. 2.6 Contractor shall provide as-built data for the system as installed as described in Section 17839. This shall include red-line notations on drawings to show all field changes that affect the schematic or wiring diagrams.