Contact Information: via email to bidquestions@douglascounty-ne.gov The deadline to submit questions on this bid is 11:00 a.m. on the Thursday before the bid opening date The surety company issuing the bid bond should be licensed by the State of Nebraska and listed on the current edition of Circular 570 of the United States Department of the Treasury. A certified check, an official bank check, or cashier's checks drawn on a national bank or a bank chartered under the laws of the state, payable to the City of Omaha, or lawful money of the United States, or a United States Government Bond (negotiable) are acceptable substitutes for bond requirements. LETTERS OF CREDIT AND COMPANY CHECKS ARE NOT ACCEPTABLE SUBSTITUTES FOR A BID BOND AND WOULD BE CAUSE FOR REJECTION OF BID. If a bidder submits more than one bid, only one bid bond is required; however, the 5% bid bond must be calculated using the highest bid amount of all submitted bids. Right is reserved to accept or reject any or all bids in their entirety and the bidders shall have the right to appeal any decision to the Omaha City Council. 1) Furnish the following items new to OEM specifications: Tension bearing Intermediate bearing Transition bearing Suction bell bearing Impeller wear ring Coupling nuts All gaskets and fasteners All proper bearings Provide all required fittings and hardware
2) Transportation to the rebuild facility and back to the City site for installation is the contractor's responsibility.
3) Disassemble pump completely, clean and bead blast all components and inspect pump.
4) Remove the existing stainless steel suction bell. Inspect for wear and ensure it is fabricated the same way to existing bell standards. Remove bearing and inspect bearing seat, ensure it is to OEM standards, install new bearing that is to OEM standards or better. Machine bearing bore and bell seat so they are within acceptable OEM tolerance if necessary. Replace any parts that are not to OEM specifications.
5) Remove bowl assembly, remove all bearings and bowl ring. Clean and inspect, chase threaded location. Install new bearing that fits OEM specifications or better. Set up and machine new bearing bore to OEM specifications. Machine new and replace bowl wear ring to OEM specifications. Replace any items that are not to OEM specifications.
6) Clean and inspect all columns, discharge head, enclosed tubes, head nipple, tension nut, coupling, adjusting nut, and split rings. Replace if any items are not to OEM specification.
7) Remove impeller; clean and inspect, re-work to build vane tips back up. Inform owner if impeller cannot meet OEM specifications and needs to be replaced. Remove impeller wear ring and replace with new one in stainless steel, check seat section of impeller and machine if necessary.
8) Balance pump shaft and intermediate shaft to OEM specifications; replace all bearings in line shaft to OEM specifications, replace all parts that are not to OEM specifications.
9) Clean and inspect head shaft, replace if not to OEM specifications.
10)Assemble rotating element assembly and balance to OEM specifications.
11)Completely assemble impeller, balance to OEM specifications, disassemble impeller and assemble pump complete, paint all components.
12)Provide City with a balance report, and shaft run out report. Pump and shaft must meet OEM specification on balance and shaft run out before pump is returned for installation.
13)Coat the outside of bowl assembly, inside and outside of the column pipe and the bottom of the discharge head with Tnemec Pot-a-pox epoxy paint.
14)Coat the outside of discharge head with Tnemec epoxy to match existing.
15)Deliver pump to site, rig pump for City provided crane, install pump, witness motor direction done by City before pump is coupled to motor, perform balance alignment per OEM specifications between pump and motor, and verify pump is ready for service.
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