66 -- VACUUM CHAMBER

Notice Date

May 16, 2001

Contracting Office

NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812

ZIP Code

35812

Solicitation Number

8-1-1-4-03471

Response Due

May 30, 2001

Point of Contact

Marlyce E. Alexander, Contract Specialist, Phone (256) 544-8344, Fax (256) 544-2812, Email marlyce.alexander@msfc.nasa.gov -- George E. Pendley, Contracting Officer, Phone (256) 544-2949, Fax (256) 544-2812, Email george.pendley@msfc.nasa.gov

E-Mail Address

Marlyce E. Alexander (marlyce.alexander@msfc.nasa.gov)

Description

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; offers are being requested and a written solicitation will not be issued. This notice is being issued as a Request for Offer (RFO)for a Vacuum Chamber. This procurement is conducted under a Midrange Procurement Procedure. 1.) Vacuum Chamber with 108" OD, 288" overall length in assembly mode 2 (see item 2 below) with hemispheres (but not including the ports on them). Chamber will support a pressure of 15 psi absolute when evacuated and will be able to be pressurized to 17 psi absolute. Chamber will be compatible with operation to 10-7 Torr. 2.) All chamber components to be made of type 304 stainless steel. Interior finish: #4 polish (grained). Exterior finish: glass bead blasted. 3.) Chamber will consist of 5 sub assemblies: a.) Cylinder: 180" long, 108" OD. Wall thickness to be determined by structural requirements. Thickness and OD of end flanges to be determined by structural requirements and practical considerations (i.e. bolt clearances, etc.). One end flange to be grooved, the other un-grooved. See figure 3 (attached). b.) End Caps (2x): End caps to have thickness and radius of curvature determined by structural requirements -- if possible they should be ellipsoidal domes with a 2:1 aspect ratio. One to have grooved flange, the other un-grooved. See figure 5. c.) Hemispheres (2x): Hemispheres to have thickness determined by structural requirements. One to have grooved flange, the other un-grooved. See figures 6 and 7. The five sub-assemblies may be assembled in one of two modes: 1. The cylinder with both hemispheres (see figure 1), or 2. The cylinder with the two End Caps, and the two hemispheres bolted together to make a spherical chamber (see figure 2). End flanges will have captured grooves for o-ring retention. 4.) Chamber will include a steel support structure for mounting tank (cylinder with either end caps or hemispheres) on to the floor; structure will distribute weight under 350 lb/ft2 empty or 900 lb/ft2 fully loaded with 10 tons ( test article and water ). The support structure will have four foot pads (area to be determined by structural requirements) with through-holes at various locations for bolting to the floor. The support structure will be compatible with a service pit underneath the tank (width to be determined, but no less than 7 ft. wide). Support structure will include support rings (304 stainless-steel) around the circumference of the cylinder at two or more locations for lifting by crane (with straps) and for overall strength. All components and sub-assemblies as specified can be freely supported by the chamber, in either Assembly Mode 1 or 2. Non-stainless-steel components to be painted with an epoxy paint. 5.) Chamber will be supplied with pneumatically operated clamping system on both ends of the cylinder to draw down and secure end covers (either the End Caps or the Hemispheres). 6.) Chamber will have the following ports (see figures 3, 4, 5, and 6 for placement): Flange type a (4x): heavy-duty ASA36 grooved ports (46" flange OD, 36" nominal port ID). Port must freely support ASA36 gate valve plus 3 ton additional load. Vendor will supply one gate valve to go with this chamber: ASA36 gate valve (pneumatic actuator w/ 28VDC solenoid control, and limit switches), both sides of valve un-grooved. Flange type b (2x): ASA32 grooved ports (41 3/4" flange OD, 32" nominal port ID). Vendor will supply gate valves to go with these ports (pneumatic actuator w/ 24 VDC solenoid control, and limit switches). Port must freely support valve plus a pumping stack; pumping stack will consist of a Varian HS-32 diffusion pump (or equivalent) plus cold-cap and anti-back-streaming baffle. Vendor will supply a 100% optically dense full-chevroned multi-coolant baffle to be used with the diffusion pump, but will not supply the pump. Flange type c (2x): ASA20 grooved ports (27 1/2" flange OD, 22" port ID -- compatible with an APD Cryogenics Inc. APD-22 cryopump) Port will be supplied with a gate valve (pneumatic actuator w/ 24 VDC solenoid control, and limit switches), both sides of valve un-grooved. Port must freely support valve plus a cryopump (APD22 or equivalent) and pump-housing. Flange type d (11x): ASA18 grooved ports (25" flange OD, 18" nominal port ID) Port will freely support a 1 ton load. Flange type e (12x): ASA10 grooved ports (16" flange OD, 10" nominal port ID). Port will freely support a 0.5 ton load. Flange type f (60x): ASA11B grooved ports (11" flange OD, 8" nominal port ID, per MDC catalog, for example). Port will freely support a 0.5 ton load. Flange type g (10x): ISO630 bolted flanges. Port will freely support a 1 ton load. Overall length of ports to be determined by structural requirements and practical considerations. All ASA and ANSI ports will be grooved for standard o-rings. On cylinder: ports at or below mid-plane will have captured grooves for o-ring retention. 7.) Cylinder will have rails welded to the inner wall for supporting experimental/test articles inside vacuum chamber. Rails will consist of angle beams at 4 locations (two top, two bottom), 350 off of vertical. Rails will be 6" wide and at least =" thick and will have threaded holes for ="-13 bolts located at 6" intervals on both faces of the rail (see figure 4). Lower two rails will be continuous along entire length of chamber; upper two rails will not interfere with ports on circumference. Lower rails will support 5 tons over a 4ft length; upper rails will support 2 = tons over a 4 ft. length. 8.) Hemisphere sections will have ASA11B flanges arranged in a truncated icosahedron pattern (60 flanges total, 30 per hemisphere). Bolted ISO630 flanges will be placed at the center of each complete hexagonal section on each hemisphere (10 flanges total, 5 per hemisphere). See figure 6. 9.) Hemispheres will have rails welded to the inner wall for supporting experimental/test articles inside vacuum chamber Rails will consist of angle beam segments distributed azimuthally, 510 off of the horizontal axis. Rails will be 4" wide and at least =" thick and will have threaded holes for ="-13 bolts located at 6" intervals on both faces of the rail. See figure 6. Rails will not interfere with ports on circumference. Rails will support = ton over a 2 ft. length. 10.) Chamber will support a 0.5 MW uniformly distributed heat load to the walls, with a temperature rise not more than 500 C, in either Assembly Mode 1 or 2 (not including the sphere). Chamber will be water cooled with two or four traces (3" wide and =" high), cylindrical part of chamber only. Water flow will begin at the bottom of the chamber and exit at the top. 11.) Hemispheres and End Caps will have lifting hooks. Lifting hooks will be balanced so that the Hemispheres and End Caps may be lifted in upright orientation for assembly. 12.) Hemispheres will have additional supports, as required, so as to separately mount them together on the floor (spherical chamber shown in Assembly Mode 2). The sphere does not require a service pit. 13.) Gate valves (as specified in item 4) will be included. Blanking flanges for all ports, and o-rings to be included. Glass viewports for 3 ASA10 ports and 3 ASA18 ports will be supplied. All o-rings will be viton. 14.) Valves described above will be supplied with chamber -- GNB valves or equivalent: ASA36 gate valve (1x), ASA32 gate valve (2x), ANSI20 gate valve (2x). Valves will meet the following specifications: -- Stainless-steel 304 construction -- Dual o-ring sealed electro-pneumatic actuation -- Will have all viton o-rings -- Positive cam over-lock design for sealing in both directions -- 24 VDC solenoid control -- Valve position indicators -- Valve state during loss-of-power failure: closed -- High pressure spray and steam washed with approved vacuum degreaser followed by two rinse cycles of water only -- Hand wiped with alcohol before final assembly 15.) Tolerances: 1 3/16" linear, 1 1.00 angular 16.) A pre-engineering meeting will take place at the vendors site prior to final design. 17.) Vendor will supply a complete set of the following documentation for review and approval prior to manufacture: -- Engineering drawings -- Floor layout drawing and loading data -- Structural calculations -- Thermal calculations -- Deflection calculations 18.) Unless otherwise shown on the drawings or specified in this statement of work, the tank shall be designed and fabricated in accordance with the applicable rules of Section VIII and Section IX of the ASME Boiler and Pressure Vessel Code, latest edition. 19.) Chamber will be vacuum washed as follows: high pressure spray and steam washed with approved vacuum degreaser followed with two rinse cycles of water only; hand wiped with alcohol before final assembly. 20.) All port blanks will be cleaned before final leak check and not removed before shipping. 21.) Chamber (with valves) will be leak checked with a helium mass-spectrometer before shipment; leak rate will be no greater than 1x10-9 scc/second G He. 22.) Chamber will be wrapped in plastic wrap and tarped during transportation. 23.) The following documentation will be supplied with the chamber: -- Spare parts list (with costs) -- Valve maintenance and operation manuals -- Leak check certificates -- QC inspection documents The provisions and clauses in the RFO are those in effect through FAC 97-25. This procurement is a total small business set-aside. See Note 1. The NAICS Code and the small business size standard for this procurement are 333999 and 500, respectively. The offeror shall state in their offer their size status for this procurement. All qualified responsible business sources may submit an offer which shall be considered by the agency. Delivery to MSFC is required within 360 days ARO. Delivery shall be FOB Destination. The DPAS rating for this procurement is DO-C9 . Offers for the items(s) described above are due by May 30, 2001, 4:00 PM CST (Central Standard Time) to NASA, George C. Marshall Space Flight Center, Procurement Office, Attention: PS52-E/Marlyce R. Alexander, MSFC, AL 35812 and must include, solicitation number, FOB destination to this Center, proposed delivery schedule, discount/payment terms, warranty duration (if applicable), taxpayer identification number (TIN), identification of any special commercial terms, and be signed by an authorized company representative. Offerors are encouraged to use the Standard Form 1449, Solicitation/Contract/Order for Commercial Items form found at URL: http://procure.arc.nasa.gov/Acq/Forms/Index.html to submit a offer. Offerors shall provide the information required by FAR 52.212-1. Addenda to FAR 52.212-1 are as follows: If the end product(s) offered is other than domestic end product(s) as defined in the clause entitled "Buy American Act -- Supplies," the offeror shall so state and shall list the country of origin. FAR 52.212-4 is applicable. FAR 52.212-5 is applicable and the following identified clauses are incorporated by reference: 52.222-26, 52.222-35, 52.222-36, 52.222-37, 52.225-3 and 52.232-34. The FAR may be obtained via the Internet at URL: http://www.arnet.gov/far/ The NFS may be obtained via the Internet at URL: http://www.hq.nasa.gov/office/procurement/regs/nfstoc.htm Questions regarding this acquisition must be submitted in writing no later than May 23, 2001. Technical acceptability will be determined by information submitted by the offeror providing a description in sufficient detail to show that the product offered meets the Government's requirement. Offerors must include completed copies of the provision at 52.212-3, Offeror Representations and Certifications -- Commercial Items with their offer. These may be obtained via the internet at URL: http://ec.msfc.nasa.gov/msfc/pub/reps_certs/midrange/ . These representations and certifications will be incorporated by reference in any resultant contract. An ombudsman has been appointed -- See NASA Specific Note "B". Prospective offerors shall notify this office of their intent to submit an offer. It is the offeror's responsibility to monitor the following Internet site for the release of solicitation amendments (if any): http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=C&pin=62 Potential offerors will be responsible for downloading their own copy of this combination synopsis/solicitation and amendments (if any). See Note(s) 1 . Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html

Web Link

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Record

Loren Data Corp. 20010518/66SOL004.HTM (D-136 SN50M2H7)