MODIFICATION
41 -- 20K CRYOGENIC COOLING SYSTEM
- Notice Date
- 5/17/2004
- Notice Type
- Modification
- NAICS
- 333415
— Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
- Contracting Office
- NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812
- ZIP Code
- 35812
- Solicitation Number
- 8-4200061951
- Response Due
- 5/27/2004
- Archive Date
- 5/17/2005
- Point of Contact
- Bobby J. Holden, Contract Specialist, Phone (256) 544-5417, Fax (256) 544-9354, Email Bobby.Holden@msfc.nasa.gov - Warren G. Jones Jr., Contracting Officer, Phone (256) 544-0389, Fax (256) 544-9354, Email warren.jones@msfc.nasa.gov
- E-Mail Address
-
Bobby J. Holden
(Bobby.Holden@msfc.nasa.gov)
- Description
- THIS NOTICE CONSTITUTES AMENDMENT NO. 02 TO THE COMBINED SYNOPSIS/RFQ FOR 20K CRYOGENIC COOLING SYSTEM. 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 is to: (1) provide answers to questions that were received, (2) provide a notice for a site visit for the existing equipment and (3) extend the closing date of the solicitation. QUESTION: MSFC Solicitation Document Request: MSOP-FA-XRCF-472 (Ref. MSFC SOL 8-4200061951, "20K Cyrogenic Cooling System") Please advise me where the documents below can be obtained or downloaded. ANSWER: MSFC-SPEC-1238 Thermal Vacuum Bakeout Specification for Contamination Sensitive Hardware. This document is located at the bottom of the webpage. http://optics.nasa.gov/facilities/xraycal_contamcontrol.html MSFC-SPEC-1443 Outgassing Test For Non-metallic Materials Associated with Sensitive Optical Surfaces in a Space Environment This document is located at the bottom of the webpage. http://optics.nasa.gov/facilities/xraycal_contamcontrol.html MWI-6430.1 Lifting Equipment and Operations This document is located at: https://webpub.nis.nasa.gov/directives/directives.htm MPG 5340.1 MSFC Clean Room Procedures This document is located at: https://webpub.nis.nasa.gov/directives/directives.htm MSOP-FA-XRCF-472 XRCF Standard Operating Procedure Clean Room System. This is not available online at this time. A hardcopy can be sent on request. The requirements in this document that are very similar to MPG 5340.1 for the scope of this work. QUESTION: What is the distance for the location of the new 1620S refrigerator vessel to the chamber feedthrough for the purpose of costing cryogenic transfer lines. ANSWER: Approximately 15 feet. QUESTION: What is the distance for the location of the new RSX compressor to the 1620S plant? ANSWER: The exact location of the compressor has not been determined. Our current compressor is 150 feet from the 1620S. This would be a close estimate to the distance between the new units. This long distance keeps us from sending cold gas to the compressor while running at temperatures above 100K. QUESTION: Is LN2 available and feedthrough port, to be used inside the chamber for heat stationing of objects? ANSWER: LN2 is available in the chamber. QUESTION: The assumption is that there is enough feed through ports available for the new cryogenic lines without adding new penetrations into the chamber. ANSWER:The port is available approximately 15 feet from the 1620S. QUESTION: Para 6.3.3. A valved helium supply and return port for the small chamber. Does this refer to bayonet connections at the refrigerator's interface? That is an additional two bayonets is required and two valves are required in the coldbox? Or are these additional supply and return ports and valves part of the cryogenic transfer lines system? ANSWER: This is the correct answer. In addition to the bayonet connections at the refrigerator we need another set of valved bayonets between the refrigerator and the chamber port. This will allow us to valve out the large shroud and run a smaller shroud we have in separate chamber. You would only provide the bayonet connection. We have a flex line to run to the small chamber. Our current system is configured in this manner. A drawing is attached QUESTION: How do we obtain a copy of NASA Marshall documents?MWI-6430.1, MPG 5340.1, and MSOP-FA-XRCF-472 RE 5.1 and 7.2.2. ANSWER: The web addresses for these documents was provided in a previously answered question. QUESTION: Where is the kick-off meeting to be held? ANSWER: NASA/MSFC, Building 4718, Marshall Space Flight Center, AL 35812 on Thursday, May 20, 2004 at 9:00AM CDT. Further details are provided below concerning the site visit to MSFC. QUESTION: RE 5.2.2 What codes and/or standards are applicable to the piping systems and also the shrouds? ANSWER: Pressure Piping Systems will be designed per ASME B31.1(Power Piping). You can refer to MPG 8823.2B Pressure Systems Guidelines also. You can find this :https://webpub.nis.nasa.gov/directives/directives.htm or https://repository.msfc.nasa.gov/directive/directives.htm QUESTION: RE 5.2.2.2 What is the required factor of safety under yield and ultimate loads? ANSWER: F.S. = 2.0 on Yield Strength F.S. = 3.0 on Utimate Tensile Strength F.S. = 3.0 on Buckling F.S. = 2.0 on Tipover QUESTION: RE 6.3.3 Are there any available ports on the chamber that may be used for adding cryogenic feedthroughs? ANSWER: The port will be made available approximately 15 feet from the 1620S. Minimum port size if one common port is available is14". Minimum port size if two ports are available is 6" each. QUESTION: RE 6.3.3 What specific requirements are there for interfacing with existing gas management system? ANSWER: We would like to run our existing refrigerator with the new compressor in case of failure of our existing compressor and vise versa otherwise both systems will run independently of each other. The new shroud and existing shroud will not be configured together as one unit running on both refrigerators. Each refrigerator will run its own shroud. We did want to have the capability to attach the new shroud to the old shroud to give us flexibility of shroud configurations. QUESTION: RE 6.3.3 What is the size of existing Helium buffer tank that we are to duplicate size on new refrigerator? ANSWER: Our current tank is 1000 gallon. The refrigerator manufacturer should have a recommendation for the tank size. QUESTION: RE 6.2.4.1 How many diodes are required? ANSWER: Approximately 45 diode location bosses are required. MSFC will provide and install the diodes, wiring harness, feedthru, and readouts. Vendor will just provide the diode QUESTION: Is there a requirement for feedthrus for the new diodes? ANSWER: A feed thru is available and will be provided by MSFC. QUESTION: Is there a requirement for readouts for the new diodes? ANSWER: The readouts will be provided by MSFC also. QUESTION: RE 6.2.4.2 What is battery limits for the lighting requirement? Is there a requirement for power Feedthru for the new lights. Can the new lights be integrated with existing lighting circuits (if any) in the chamber? Is there a lighting panel in the vicinity for powering the lights. ANSWER: We will provide the lighting power(110V) supply to the shroud. You shall provide a vacuum compatible plug at the end of the harness. A battery backup is not necessary. QUESTION: RE 6.5 For materials and assemblies requiring vacuum bake-out, such as MLI, is the vendor required to perform the bake-out or can we assume that MSFC will participate in that requirement? ANSWER: MSFC has the bakeout facility and may elect to perform this bakeout. This requirement should be bid as a separate line item. QUESTION: Does this project carry a government priority rating? ANSWER: No QUESTION: We will want to send a hardcopy of our proposal in addition to the e-mailed proposal. What is the full overnight mailing address, building number, mailstop, etc.....? ANSWER: The full overnight mailing address is as follows: NASA/MSFC, Central Receiving, Building 4471, Attention: PS33-H/Bobby J. Holden, MSFC, AL 35812. QUESTION: We are currently interviewing prospective subcontractors for installation of the Linde BOC Helium refrigerator and on site labor help in installing the shroud, plumbing, helium supply manifold, refrigerator piping, chamber feed thru, and MLI blankets. Do you have a recommendation or a list of qualified vendors familiar with your procedures who have performed satisfactorily for you? ANSWER: The contractor that built and installed our existing shroud was PSI who is no longer in business. Suggest talking with the refrigerator manufacture for suggestions on installing their system. SPECIAL NOTICE: A site visit to see the existing equipment is scheduled at NASA/MSFC, Building 4718, Marshall Space Flight Center, AL 35812 on Thursday, May 20, 2004 at 9:00AM CDT. Please see the uploaded document entitled "Special Notice" for advance information regarding access to Redstone Arsenal. The due date for receipt of offers is extended to May 27, 2004. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) on May 24, 2004. 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/MSFC Business Opportunities home page is http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin=62 NOTE: THIS NOTICE WAS NOT POSTED TO WWW.FEDBIZOPPS.GOV ON THE DATE INDICATED IN THE NOTICE ITSELF (17-MAY-2004); HOWEVER, IT DID APPEAR IN THE FEDBIZOPPS FTP FEED ON THIS DATE. PLEASE CONTACT fbo.support@gsa.gov REGARDING THIS ISSUE.
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