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Hydro-Turbine Thrust Bearing Oil Coolers

Hydro-Turbine Thrust Bearing Oil Coolers

General Information

Document Type:MOD
Posted Date:Aug 30, 2017
Category: Furnace, Steam Plant, Drying Equipment and Nuclear Reactors
Set Aside:N/A

Contracting Office Address

Department of the Army, U.S. Army Corps of Engineers, USACE District, Portland, Attn: CECT-NWP, PO Box 2946, Portland, Oregon, 97208-2946, United States

Description

US Army Corps of Engineers, Portland District is soliciting for the purchase of twelve (12) hydro-turbine thrust bearing oil coolers for use at The Dalles Lock and Dam Project. About September 2017 a formal request for quote with detailed specifications will be attached to this announcement. The vertical loads in a hydro turbine-generator are supported by the thrust bearing. The oil film bearing assembly and the heat exchangers (cooler) are submerged in an oil bath (thrust tub) for lubrication and heat transfer. Cooling water (river water) is supplied through gravity flow through the coolers. Two unique types of coolers will be purchased. Nine (9) main unit coolers consist of two semicircular sections where cooling water flows through rows of finned tubes that are supported by a steel frame. The government does not have any detailed drawings for these coolers. As such, the new coolers will have to be reverse engineered, and a drawings generated and approved by the government. The finned tubes are a double tube design. The outer tube will be made from copper and will have integral, helical fins that are extruded. The inner tube will be made from 90/10 copper nickel and will be mechanically expanded into the outer tube. The tube dimensions including inner diameter, wall thickness, fin density, fin thickness, and fin outer diameter will all be identical to the existing coolers. The coolers are capped on the ends with water boxes. The water boxes act as a plenum, or header, to distribute water to the finned tubes. The supply and return piping is attached to the water boxes. The tube sheets are a plate that holds the finned tube array in place. The ends of the finned tubes are expanded into the tube sheets for a secure, mechanical connection. The tube sheets also provide a means to connect the finned tubes to the water boxes. The tube sheets will be made from naval brass. The cooler frames support the finned tube array as well as secure the coolers to the thrust tub. The frames will be made from carbon steel. Three (3) station service unit coolers will have informational drawings provided, from which shop drawing will be generated and approved by the government. The station service unit thrust bearing oil coolers consist of two sections of coiled 90/10 copper/nickel tubes that meet the requirements of ASME B16.15, ASME B16.18, ASME B16.22, and/or ASME B16.29. The coil will have to be fabricated from more than one piece of copper due to the length, but the fabrication would be such to minimize the number of joints. The cooler fittings will also be copper, and the cooler frames will be steel that meets the requirements of ASTM A36/A36M This solicitation will result in a firm fixed priced purchase order. The delivery date will be announced when the formal solicitation is issued, but is anticipated to allow fabricators ample time. One contract will be awarded to a single contractor. This is a Total Small Business Set Aside, available to all responsible and responsive offerors who can meet the commercial item evaluation criteria and are small businesses as registered in the System for Award Management under the applicable NAICS. The following is the list of all items to be purchased: Nine (9) main unit thrust bearing oil coolers Three (3) station service unit thrust bearing oil coolers The NAICS code for this work is 332410 with a size standard of 750 employees. The PSC code is 4420. Due to the commercial nature of this item, publicizing and response time will be set to afford potential offerors a reasonable opportunity to respond in accordance with FAR 5.203. Should you have any questions, feel free to contact the buyer listed on this announcement. The Small Business Deputy for Portland District is Carol McIntyre. Carol is available by calling (503) 808-4602 or via email at carol.a.mcintyre@usace.army.mil.

Original Point of Contact

POC Jeffrey S. Renner, Phone: (503) 808-4630

Place of Performance

Address:
The Dalles Lock and Dam Project, I-84, Exit 88, The Dalles, Oregon, 97058, United States
97058,
Link: FBO.gov Permalink
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