NASA-Ames Research Center, Mail Stop 213-13, Moffett Field, CA 94035-1000

Z -- INSPECTION AND OVERHAUL OF THE NFAC INDUCTION FREQUENCY CHANGER ROTATING MACHINERY SOL IFB2-36537(RLG) DUE 101195 POC Contact Point, Chris Wolfe, Telephone: (415)604-1442, e-mail address to Chris_Wolfe@eng.arc.nasa.gov, Contract Specialist, Robert L. Guerrero, Telephone: (415)604-4864, e-mail address to Robert_ Guerrero@qmgate.arc.nasa.gov This project consists of providing labor, equipment, materials, and services necessary for inspection and overhaul of the induction frequency changer rotating machinery for the 40 X 80 wind tunnel aerocoustic modification project. The equipment consists of two MG sets which provide 12 Hz. starting power and variable frequency drive power for operation of the wind tunnel drive motors. The work in the base bid includes: inspection, disassembly, cleaning and refurbishment of a smaller MG set with a 5,880 KVA AC synchronous generator and two 1350/3150 HP DC motors and a larger MG set with a 28,000 HP AC wound rotor induction motor and two 1115/2520 KW DC generators. Rewind armature of one DC motor at the contractor's plant with NEMA class F insulation system. Modifications to the ventilation system of the smaller MG set including fabrication and installation of pit pans, a new filtered supply air unit and demolition of the existing vent fans, motors, duct, and filters. Fabrication and installation of replacement brushholders for all four DC machines. The work in the options include: Steam clean, bake, and spray paint DC generator armatures at the contractor's plant; rewind fields of one DC motor; rewedge AC machine stators; rewedge armatures of a 1350/3150 HP DC motor and two 1115/2520 KW DC generators; fabricate and install new bearing (9'' X 18'') pedestal for the smaller MG set. The original bearing shall be re-used. The project is located at NASA Ames Research Center, Moffett Field, CA. The magnitude of construction is between $1,000,000 and $5,000,000. The period of performance is approximately 290 calendar days. THERE WILL BE A NON-REFUNDABLE CHARGE OF $35.00 FOR EACH SET OF PLANS AND SPECIFICATIONS. MAKE CHECK PAYABLE TO: DMJM. All responsible sources may submit a bid which shall be considered by the Agency. NASA-Ames Research Center has an active Home Page. It is available at the follow ing URL: http://www.arc.nasa.gov/org-listing.html via a world wide web browser such as Mosaic, Netscape, or similar application. Look for Ames Acquisitions under the Center Operations Directorate. The Home Page contains our synopses, subsequent solicitations, information on the NASA MidRange Program and will have appropriate technical and business points of contact. (0234)

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