DWA & MNA - Generator Guide Bearing Refurbishment
Closed Pre-Solicitation Posted
This opportunity was awarded. See the award notice from , or the latest solicitation from .
- Solicitation number
- W912EF20B0013
- Agency
- ENDIST Walla Walla US Army Corps of Engineers, Department of Defense
- Responses due
- Set-aside
- Total Small Business
Opportunity facts
- NAICS code
- 332710 Machine Shops
- Place of performance
- Walla Walla WA 99362 USA
Notice details come from SAM.gov. Updated .
About this opportunity
This pre-solicitation notice seeks a contractor to refurbish generator guide bearings for multiple hydroelectric dams. The U.S. Army Corps of Engineers Walla Walla District will procure refurbishment of up to two sets of thrust bearing shoes for McNary Dam units 13 and 14, as well as refurbishment of generator guide bearings for Dworshak Dam units 2 and 3. Proposals are due by May 30, 2020. The award will be made to the responsible offeror whose technically acceptable quote represents the best value to the government based on technical and price factors.
The opportunity is set aside for total small business and involves refurbishing thrust bearing shoes for McNary Dam units measuring 50 to 128 inches in diameter and weighing up to 24,000 pounds total, as well as generator guide bearings for Dworshak Dam units 2 and 3 measuring 67 to 95 inches in diameter and weighing 1,764 to 2,646 pounds. The babbitt material for all bearings is a tin alloy. No incumbent is named and budget details are unspecified, but the scope involves refurbishment of hydroelectric generator components critical to dam operations.
Notice text
The awarded contractor will refurbish up to 2 sets of thrust bearing shoes for McNary Dam units 13 and 14. The stationary portion of the English Electric bearing consists of 12 steel-backed babbitt segments or shoes which are each supported on jackscrews. The I.D. of the thrust shoes is 50 inches and the O.D., of the shoes is 128 inches. The overall shoe thickness is 9.5 inches including a babbitt layer of approximately 0.125 inch and 14 longitudinal grooves across the pad, parallel to the centerline of the pad, 0.0625" deep. Each shoe, with Babbitt, is estimated at 2,000 lbs. each, or 24,000 lbs. for the entire set.
The awarded contractor will also refurbish Dworshak Dam unit 2 and unit 3 generator guide bearings. The unit 2 generator guide bearing is a pad-type bearing consisting of 18 shoes with a diameter of 67 inches. The segments are approximately 13 inches by 8 inches by 6 inches and weighs approximately 1,764 pounds for the set. The unit 3 generator guide bearing is a pad-type bearing consisting of 24 shoes with a diameter of 95 inches. The segments are approximately 13 inches by 8 inches by 7 inches and weighs approximately 2,646 pounds.
The Babbitt for all bearings is a tin alloy base material.
Notice history
| Notice | Type | Posted |
|---|---|---|
| DWA & MNA - Generator Guide Bearing Refurbishment | Award Notice | |
| DWA & MNA - Generator Guide Bearing Refurbishment | Solicitation | |
| DWA & MNA - Generator Guide Bearing Refurbishment | Pre-Solicitation |
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