Z -- 14 X 22 FOOT SUBSONIC TUNNEL MAIN DRIVE SYSTEM REPLACEMENT (BLDG. 1212C) This is a special notice related to the Request for Information (RFI)to Design, Furnish, Install and Test a Replacement of the Main Drive System for the 14 by 22 Foot Subsonic Tunnel, that was posted on January 27, 1999 and which included a "Draft" Specification and drawings. The same "Draft" Specification under that RFI will be posted again on November 1, 1999, and may be downloaded at http://procurement.nasa.gov/EPS/LaRC/class.html The same drawings under that RFI will be available again on November 1, 1999 from John T. Inge (FAX, phone and e-mail stated below). NO SOLICITATION EXISTS; THEREFORE, DO NOT REQUEST A COPY OF THE SOLICITATION. If a solicitation is released it will be synopsized in the CBD and on the NASA Acquisition Internet Service. It is the potential offerors responsibility to monitor these cites for the release of any solicitation or synopsis. The following special notice is stated below : SPECIAL NOTICE: As a result of feedback obtained from Proposed Draft Specification RFI-14x22-B1212C, dated Jan. 27, 1999 for the 14 by 22 Ft. Tunnel Main Drive Replacement Project, the Government is considering modifying the technical specification for the subject project in the following areas: 1. Reuse of existing feeder, CB7 switchgear, and secondary unit substation. 2. Option to "abandon in place" all existing drive equipment not required by new drive system and use of alternate locations for new equipment using new pre-engineered enclosure. 3. Delete Finite Element Analysis (FEA) requirement and associated performance risk of nacelle structure. (will be done by others and implies Gov't assumes responsibility for assuring specified motor performance will be acceptable) 4. Delete Tunnel Controls (will be done by others and includes interface to existing tunnel control system, new PLC's, new MCC, and integration with drive control equipment and auxiliaries) 5. Delete Lube Oil system (will be done by others using vendor provided motor lubrication requirements) 6. Delete motor Ventilation system (will be done by others using vendor provided motor ventilation requirements) 7. Allow use of overload rating on system, at least 8,000 HP cont., & 12,000 HP for 30 minutes overload 8. Delete the following listed studies: Short circuit (3.2.2.1), Load Calculation (3.2.2.3), Insulation coordination (3.2.2.5), System Dynamic Study (3.4.2.1), Structural Analysis of Motor Fdn. (3.4.2.2), Lube System Analysis (3.4.2.4), Ventilation System Analysis (3.4.2.5), and Coast down analysis (3.4.2.6) 9. Permit efficiency performance of system to be based on 95% or higher at full load and simply identify no load losses. Interested parties are invited to provide any comments on the changes as well as an estimate of possible cost savings for each of the noted project elements as they relate to total project scope. The anticipated cost reductions should reflect equipment costs, demolition/installation, engineering & design costs, overhead and profit, and project management cost associated with each listed element. Any responses should be received by COB, 11/15/99 and addressed to: John T. Inge NASA Langley Research Center Facility System Engineering Division M/S 442 1 North Dryden Street Hampton, VA 23681-2199 (757) 864-7267 (757) 864-8811 (fax) e-mail:j.t.inge@larc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/LaRC/date.html#RFI-14X22-B1212C. E-MAIL: John T. Inge, j.t.inge@larc.nasa.gov. Posted 11/02/99 (D-SN396894).

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