NASA/MSFC has a requirement for Thermal Chamber for Rotary Table, consisting of the following specifications:
Concept Specifications
Stand mounted stationary thermal environment chamber to accommodate the Contraves 352 table when in a vertical spin axis orientation. Currently there is no manufactured equipment capable of the following requirements.
Minimum chamber size of 20"x20"x20" and should be mounted to the top of the Contraves 352 table which has air bearings that could be adversely affected by condensation as well as contributing to loading of the heating/cooling system.
The table base shall not be enclosed due to mechanical and environmental specifications. An extension of the rotational shaft shall enter the thermal chamber from the bottom and have the existing table top, or similar surface, placed inside the chamber. This extension will affect thermal loads on the chamber due to the interface with the 352 table. The extension and its interface with the chamber shall provide a minimal amount of rotational friction.
Capable of providing a stable thermal environment within the range from -20 degrees C to +70 degrees C. Humidity should remain below dew point levels at the requested range of temperatures and should never reach above 70%. Assume that equipment under test inside the chamber will be 10 lb. of aluminum with a power dissipation of 15 Watts
Temperature pull down rate of 20 degrees C per hour, pull up rate of 60 degrees per hour. Mechanical refrigeration is preferred as long as moving parts would be placed at a distance of 15' with lines running at ceiling level (9' above floor level). Forced air cooling would be considered as a negative impact on award judgment.
Installation sight is within 15 feet of AC Power; 220VAC at 30 Amps and 115V at 15 Amps are available. Higher amperage requirements will be taken into consideration. There is no water supply or drain line in the vicinity of the rate table.
Expected temperature control/resolution and accuracy expected for temperature setting resolution of less than ½ degree F; accuracy to +/- 1 degree F.
Ambient atmosphere will be air.
Thermal loading will be limited to the tables rotating surface and associated leak paths. Also, instruments mounted on the table will dissipate up to 40 watts when isolated from the table, 15 watts not isolated. The locations ambient conditions are between 70 and 75 degrees F, year round with a humidity of 30 to 70 percent. The chamber shall remain free of condensation during operation.
Dimensions of the Model 352 tilt axis pillow blocks - Table base is 43 in diameter and maximum width is 50 and table height of 45 ½ inches. Other items extend higher and can be seen in the photos provided.
On site installation required to be performed by contractor. Interior delivery constraints include 58" doorways and a 66" hallway with turns
Expected delivery A.R.O.is 6 months. Handling instructions and necessary support should be stated in the proposal. Upon receipt of hardware at Building 4471/MSFC Transportation Office, arrangements for handling of equipment to transport and install the chamber will be coordinated. Unpacking instructions should be included in the proposal. NASA will dispose of crate material.
Mounting requirements should be provided in the proposal. MSFC will prepare site with regard to bolt interfaces. Electrical service as described previously is available and is located 15 away from the table, although any cabling should be routed as previously stated.
Contractor will be required to perform selected temperature chamber tests at installation to demonstrate the system is operational and is compliant with the performance specifications and to confirm it was not damaged during shipment.
Quantity: 1 each.
This notice is a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR Subpart 12.6, as supplemented with additional information included in this notice. This announcement constitutes the only solicitation, which is issued as a Request for Quotation (RFQ); quotes are being requested and a written solicitation will not be issued. Offerors are required to use the On-Line RFQ system to submit their quote. The On-line RFQ system is linked above or it may be accessed at http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=C&pin;= . The information required by FAR Subpart 12.6 is included in the on-line RFQ.
The Government intends to acquire a commercial item using FAR Part 12 and the Simplified Acquisition Procedures set forth in FAR Part 13.
Questions regarding this acquisition must be submitted in writing (e-mail is preferred) no later than August 17, 2004, 4:30 P.M. It is the quoter's responsibility to monitor this site for the release of amendments (if any). Potential quoters will be responsible for downloading their own copy of this notice, the on-line RFQ and amendments (if any).
An ombudsman has been appointed - See NASA Specific Note "B".
Any referenced notes may be viewed at the following URLs link below.
