Mayfield Powerhouse Crane Controls Upgrade

This project includes the design, construction, installation and commissioning of a new controls system for the bridge crane located in the Mayfield Powerhouse. This task is to replace outdated control components with modern equipment to provide capability for smooth and precise low speed movements regardless of crane loading. The crane controls system upgrade shall include new AC electrification of the crane, new AC motors and AC motor controls as specified in these technical provisions. The contractor shall supply all materials required to complete the work required by this contract in excess of those materials to be supplied by Tacoma Power as listed in Section 01040 - Project Coordination. In all cases, the City's contract is with one (1) general contractor and it is the general contractor's responsibility to ensure all work required to provide a complete and operational system is included in their bid. When possible, the City has attempted to reference work which should be coordinated with various trades, but it is the contractor's responsibility to coordinate and schedule the work of all subcontractors, trades, and suppliers to assure the proper and timely prosecution and completion of all items of work Replace outdated control components with modern equipment to provide capability for smooth and precise low speed movements regardless of crane loading. The purpose of this project is to improve safety, performance, and reliability of the crane control system of the bridge crane in the Mayfield powerhouse. The scope is to replace outdated control components with modern equipment to provide capability for smooth and precise low speed movements regardless of crane loading. The City anticipates awarding a single design, construction, installation and commissioning contract. A design review will occur before commencing with construction. The cost of the work is expected to be around $1,500,000. The anticipated project completion date is March 2025. The contract will be for a two-year period or until the project is complete, whichever is sooner. The City reserves the right to cancel the contract for any reason, by written notice, as stipulated in the contract. Questions should be submitted to Dawn DeJarlais via email to ddejarlais@cityoftacoma.org Pre-Submittal Questions: 1/30/2024 Response to Questions: 2/2/2024 Submittal Evaluated: 2/14/2024 Interviews/presentations, on or about: 2/23/2024 Award Recommendation, on or about: March 2024 Public Utility Board/City Council Approval, on or about: March 2024 If a Bid Bond is used, the form furnished by the City must be followed; no variation from the language thereof will be accepted. The amount of the Bid Bond must be not less than five percent (5%) of the total amount bid; and, if shown in dollars and cents, the amount of said Bid Bond must be not less than the required five percent; or in lieu of dollars and cents, the bond may be completed by inserting therein, "five percent of the amount of the accompanying proposal". Bid Bonds will not be returned. Bid Bond should be submitted electronically with bid submittal. Hard copies should be postmarked no later than the submittal date. A payment and performance bond, including power of attorney, for this project is required in the amount of 100 percent of the Contract total.

Division 14 -

Conveying Equipment, Operation and Maintenance of Conveying Equipment, Common Work Results for Conveying Equipment, Commissioning of Conveying Equipment, Elevators, Escalators and Moving Walks, Escalators.