| A--AUTOMATED SYSTEM FOR DRYING AEROGELS USING SUPERCRITICAL CARBON DIOXIDE |
| Program Summary |
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| Description |
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General Information
| Document Type: |
Amendment to Combined Synopsis/Solicitation |
| Solicitation Number: |
NNC08230834Q |
| Posted Date: |
Mar 17, 2008 |
| Original Response Date: |
Mar 21, 2008 |
| Current Response Date: |
Mar 26, 2008 |
| Original Archive Date: |
Mar 17, 2009 |
| Current Archive Date: |
Mar 17, 2009 |
| Classification Code: |
A -- Research & Development |
| Set Aside: |
Total Small Business |
| Naics Code: |
334516 -- Analytical Laboratory Instrument Manufacturing |
Contracting Office Address
NASA/Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135
Description
THIS NOTICE CONSTITUTES AMENDMENT NO. 1 TO THE COMBINED SYNOPSIS/RFQ FOR AUTOMATED SYSTEM FOR DRYING AEROGELS USING SUPERCRITICAL CARBON DIOXIDE. Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment No. 1 is to provide answers to clarification questions submitted in response to NNC08230834Q and to extend the due date for offers to 4:30 PM EDT on March 26, 2008. The answers to the clarification questions follow: Question - Referring to paragraph 1b, is the "user selectable rate" pressure or flow? If it's flow is it the CO2 or the combined CO2 and solvent? Answer- This is a flow rate. The purpose of step1b is to displace the bulk solvent surrounding the samples with liquid CO2. This needs to be done at a controlled rate to prevent damage to the samples, so the critical rate is the rate of solvent removal. The user selectable rate should reflect the rate of solvent removal. Question - Referring to 1g, is the "user selectable rate" pressure or flow? Should each vessel have its own flowmeter? Answer - Step 1g vents the supercritical CO2 in the extraction chamber until the chamber reaches ambient pressure and is safe to open. This must be done at a controlled rate to prevent damage to the samples due to pressure gradients within the sample. This rate could be in terms of either pressure or flow, but each vessel must be instrumented appropriately both to control the rate and to allow the operators to know when the vent is complete. Question - Are all the on-off valves and the flow control valves automated? Answer- Yes, we intend that the drying process be completely automated. Question- Referring to paragraph 8 and 9, do all the vessels have the same operating conditions when operated at the same time? Answer- Yes. All of the vessels should experience the same operating conditions although, as stated in paragraph 8 if it is not practical to fill or drain all chambers simultaneously they can be operated sequentially within a step. The specified flow rate and temperature in a step will apply to all of the vessels during that step although they all may not be filling or venting simultaneously. Question - Referring to paragraph 17, what is NMP? Are we correct in assuming that the flow will be in the top and out the bottom? If not should the system be plumbed to operate in reverse also? Answer- NMP is N-Methyl-2-pyrrolidone, CAS number [872-50-4], density @ 25 C is 1.028 g/cc. You can assume flow into the top of the vessel and out of the bottom. Question -What is the maximum system pressure and temperature? This information is needed to spec the vessels. Answer - The process requires temperatures up to 60 C and pressures of at least 100 Bar (1450 psig). A maximum temperature of 100 C and a maximum pressure of 200 Bar would cover our entire range of interest with some margin. Question - Are vessel baskets needed? Answer - Vessel baskets are not required. The due date for responses is extended. All submissions are now due via email to BOTH Dawn R. Pottinger and J. Chris Johnston by 4:30 PM EDT on March 26, 2008. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on March 7, 2008.Documents related to this procurement are available over the Internet. These documents reside on a World Wide Web (WWW) server which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/GRC Business Opportunities home page is http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin=22
Point of Contact
Dawn R Pottinger, Contract Specialist, Phone 216-433-5063, Fax 216-433-2480, Email dawn.r.pottinger@nasa.gov - J.Chris Johnston, Technical Point Of Contact, Phone 216-433-5029, Fax 216-433-5033, Email james.c.johnston@grc.nasa.gov
Email your questions to Dawn R Pottinger at dawn.r.pottinger@nasa.gov
Additional Information
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