MODIFICATION
Y -- Oahe Switchyard Upgrade Phase I. Improvements to be made include upgrading all line bays to a double-bus double-breaker scheme in both the 115kV and 230kV switchyards
- Notice Date
- 2/18/2014
- Notice Type
- Modification/Amendment
- NAICS
- 237990
— Other Heavy and Civil Engineering Construction
- Contracting Office
- USACE District, Omaha, 1616 Capital Ave, Omaha, NE 68102-4901
- ZIP Code
- 68102-4901
- Solicitation Number
- W9128F14SC011
- Response Due
- 2/25/2014
- Archive Date
- 4/19/2014
- Point of Contact
- Polina Poluektova, 402-995-2091
- E-Mail Address
-
USACE District, Omaha
(polina.a.poluektova@usace.army.mil)
- Small Business Set-Aside
- Total Small Business
- Description
- Description of Work Oahe Switchyard Upgrade Phase I The U.S. Army Corps of Engineers, Omaha District is seeking information regarding capability and availability of potential small business contractors to perform work Project Background - The Oahe powerhouse is located on the Missouri River just north of Pierre, South Dakota. Construction started in 1948 and was completed in 1962. The project has seven Francis type turbine generators with a total capacity of 786MW. This power is delivered to the Western Area Power Administration (WAPA) at 115kV and at 230kV. The 115kV switchyard is joined to the 230kV switchyard through one autotransformer. Each switchyard is configured in a main and transfer breaker scheme using a Main Bus and an Auxiliary Bus. The Main Bus on both switchyards has a breaker for each transmission line, while the Aux Bus on both switchyards has a single transfer breaker with common relaying on transfer breaker 2486 and MOD's on each bay for use in bypassing a single line breaker. Project Existing Conditions - The current switchyard configuration does not offer the redundancy necessary to meet modern system demands. Loss of the Oahe 115kV bus results in a loss of the Oahe autotransformer and Oahe Generating Unit No.1, including the voltage support to the 115kV Pierre Load pocket. The Pierre Load pocket is then left served by a single power line out of the Irv Simmons switchyard. An undervoltage load shedding scheme must then be implemented to keep this connection from being tripped off line. All of the existing oil-filled circuit breakers have been replaced with new 2000A SF6 circuit breakers in 2010-2011. The Main Bus and Auxiliary Bus are both rated 2000A. All line bays are rated 1200A although their breakers are now 2000A. There is much corrosion on the post insulator supports, and the post insulators are the old cap-and-pin type no longer manufactured. The cap-and-pin design ultimately experiences failure where the insulator sections separate due to expansion of the cement in the joints between the porcelain surfaces. The Project requested that all post insulators be replaced with new modern insulators, and that replacement posts be fabricated and furnished for future replacement. The number of posts to be furnished was to be derived by the Project, but at this time, no data is available; therefore, the design assumes that 30 posts of each voltage class with an option to provide more on a cost-per-post basis. The existing disconnect switch operating platforms are supported off the ground by insulators, which is a very uncommon design and could defeat the purpose of grounding. The Project also reports that these platforms are too small to serve their purpose in a practical manner - in fact it is not possible to remain standing on a platform while moving the manual switch operator through its full range of motion. Scope of Work of Upgrade - Improvements to be made include upgrading all line bays to a double-bus double-breaker scheme in both the 115kV and 230kV switchyards by replacing the line bay MOD's with breakers; installing a second autotransformer with double-bus double-breaker sources; replacing the existing autotransformer with a larger unit; and replacing the bus tie breakers in the 230kV Main Bus with MOD's. Improvements for this contract include installing the second autotransformer and breakers for a double-bus double-breaker scheme, and upgrading the Pierre and Irv Simmons lines to double-bus double-breaker configurations as requested by WAPA to alleviate current power flow problems as soon as possible. The remaining line bays, replacement of the existing autotransformer and replacement of the sectionalizing breakers with MOD's will be performed under subsequent contracts and are not part of this work effort. The new 150MVA autotransformer will be provided as Government Furnished equipment. All interested, responsive and responsible contractors are encouraged to participate in this market research by submitting a response via e-mail to polina.a.poluektova@usace.army.mil no later than 2:00 PM CST 25 February 2014. Responses should include the company name, address, contact name and title, phone number, e-mail address, business size and classification/certification under NAICS Code 237990, CAGE Code, DUNS Number, your bonding capacity (single and aggregate) and a list of your company's three (3) most recent projects of the same type described in this notice. Recent project information should include project number with title/description, name of the government agency or non-government client for which the work was performed, the agency/client point of contact (name, phone number and e-mail address) and whether you participated as the prime contractor or as a subcontractor. This notice does not constitute a request for a formal proposal. This notice is provided as information to the market place and is an invitation for an expression of interest and brief demonstration of qualifications to perform and deliver the anticipated requirement. The Government will not pay for the provision of any information, nor will it compensate any respondents for the development of such information. Questions regarding this Sources Sought Notice should be directed to: Polina Poluektova, Contracting Officer/Specialist, 402-995-2091 or e-mail: polina.a.poluektova@usace.army.mil Technical POC is John Palensky, 402-995-2719, e-mail: john.a.palensky@usace.army.mil
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USA/COE/DACA45/W9128F14SC011/listing.html)
- Place of Performance
- Address: USACE - Oahe Powerhouse, 28563 Powerhouse Rd, Pierre, South Dakota
- Zip Code: 57501
- Zip Code: 57501
- Record
- SN03290164-W 20140220/140218234223-9815dd1f93d334e1be0b47697c2b4900 (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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