NASA/John F. Kennedy Space Center, Procurement, Kennedy Space Center, FL 32899

43 -- HELIUM COLD (CRYOGENIC) RECIPROCATING GAS COMPRESSOR SOL MR9155-4758 DUE 070899 POC Marilynn A. Nelson, Contract Specialist, Phone (407) 867-3462, Fax (407) 867-2042, Email Marilynn.Nelson-1@ksc.nasa.gov -- Mitch Colvin, Contracting Officer, Phone (407) 867-7230, Fax (407) 867-2042, Email Mitch.Colvin-1@ksc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/KSC/date.html#MR9155-4758. E-MAIL: Marilynn A. Nelson, Marilynn.Nelson-1@ksc.nasa.gov. NASA/KSC plans to issue a Request for Quotation (RFQ) to purchase 1 reciprocating type helium cold-gas compressor (CGC) suitable for outdoor installation with options to purchase 2 additional units. The CGC shall be capable of compressing helium liquid and/or vapor in accordance with the specifications herein and shall be a free-standing unit consisting of the following: a. An all-welded vacuum insulated cryostat, integrally connected to the compressor housing, inlet/discharge isolation valves, discharge relief valve, and bayonet connections The term "cryostat" is meant as the container-assembly that thermally insulates the compressor housing (which is the "cold-end" assembly of the compressor) and includes the vacuum jacket and multilayer insulation (MLI) (wrapped around the compressor housing). b. Inlet surge vessel c. Cold (cryogenic) and warm (ambient) end assemblies d. Drive-train driven by an electric motor, with direct current (dc) speed control, including a flywheel and protective cover e. Pressure and temperature instrumentation on inlet and discharge Performance. The CGC shall meet the operation performance criteria specified below: Operating fluid: Helium (liquid and/or vapor) per MIL-PRF-27407, Grade A; Inlet pressure: 0 to 35 psig (0 psig nominal); Inlet temperature: 7.65 to 140 R; Inlet quality: 0 to 100% (subcooled liquid to super-heated vapor); Discharge pressure: 35 psig (minimum); Actual volumetric capacity: 7.83 cfm @ 300 rpm (min.); Volumetric efficiency: 70% (approximate, worst case); Operating piston speed: 60 to 400 rpm; Nominal continuous operating piston speed: 300 rpm; Required electrical power: 240 V ac, 30 amps, 60 Hz, 3-phase; Drive motor: 3 hp; Speed control: Variable dc controller, 240 V ac supply, 4-20 mA input; Spatial envelope: 3.5 ft.-wide and long by 7.5-ft. high. Cool-Down. Cool down of unit from ambient to liquid helium temperature prior to unit start shall be approximately 30 minutes. System Shutdown Protection. Provision shall be made to safely shutdown the unit for the following conditions: a. High discharge pressure and/or temperature b. High motor temperature c. Excessive unit vibration Operating Cycles. The unit shall be capable of operating continuously, with the capability to perform many shutdown/startup cycles per day. Operating Environment. The unit shall be designed to operate in a seacoast environment and shall be capable of operating in an average summer environment of 100 degrees Fahrenheit (0F) and 100 percent (%) relative humidity (RH), and an average winter environment of 32 0F and 70% RH. The unit shall be designed in accordance with ANSI/ASCE 7 for a basic wind speed of 150 miles per hour (mph). Periodic Maintenance. Shaft seals (cold and warm ends) shall be capable of a minimum of 4000 hours of operation before being replaced. Piston seals and valves shall be capable of 17,500 hours (minimum) of operation at the nominal conditions, specified herein, before the "as-new" volumetric efficiency decreases more than 10%. Configuration. Inlet and Discharge Connections. A 1 inch close tolerance, dual seal, female bayonet and a 1 inch straight or Y pattern type isolation valve (for liquid helium service) shall be incorporated on both the inlet and discharge connections in a vertical orientation. The bayonets shall have an ANSI flanged connection and shall be suitable for liquid helium service and long duration usage in a fixed system. The ANSI flanges shall be in accordance with ASME B16.5 with material conforming to ASTM A182-F316L. Anti galling design for isolation valves shall approved prior to valve selection and shall be verified to have proven reliability in industry. The inlet and discharge process lines shall be vacuum insulated using MLI. Process line vacuum spaces shall be integral to the compressor housing vacuum space (i.e., no vacuum break), unless otherwise approved by the Contracting Officer. The total heat leak to the inlet process line, including and from the male female bayonet assembly to the suction/inlet valve (in the compressor housing), shallbe no more than 16 British thermal units per hour (Btu/hr). The isolation valves shall have a flow coefficient (Cv) greater than 15, as defined by ISA S75.01. Cryostat. The cryostat enclosing the compressor housing (e.g., also known as the compressor "cold-end" assembly) and inlet/discharge process lines (including components) shall be insulated using MLI (also known as "super-insulation" and/or laminar radiation shielding). The cryostat shall have a 79K14672-2 vacuum pump-out and relief (VPR) valve with Fredricks model 2100-31 thermocouple gauge (suggested source: part number VR-46-6272A, PHPK Technologies Inc., 535 Enterprise Dr., Westerville, OH 43081, or approved equal) mounted to the vacuum jacket. The VPR valve shall be protected by an 11 gauge, 304 type stainless steel (SST) protective enclosure secured with quick release latches (also made of 304 SST). Mounting. The unit shall be mounted on a heavy duty structural steel base suitable for fastening to a poured concrete foundation with provision for anchor bolts. Electric Drive Motor. The electric motor shall be a totally enclosed fan cooled (TEFC) dc motor in accordance with NEMA MG 1 and have a dc variable speed controller capable of local and remote operation. The motor shall be suitable for outdoor use in the environment specified. Electrical design shall be in accordance with NFPA 70. Drive Train. The design and selection of all drive train components shall be in accordance with accepted industry standards and shall have a 90% survival life greater than 100,000 hours. Guards. Personnel protection guards shall be provided for all exposed moving parts to eliminate any hazard to personnel. Guards shall conform to the following require-ments: (1) prevent entry of loose clothing, hands, fingers, and other body parts into the point of hazard by reaching through, over, under, or around the point of hazard; (2) protect personnel from breakage of components/parts; (3) not create a hazard themselves; (4) capable of being removed by authorized personnel; and (5)not be rendered ineffective from the unit vibration and operation in the environment. Instrumentation and Controls. Pressure and temperature measurement shall be provided on the unit inlet and discharge. A gas-bulb-type temperature measurement shall be used. Pressure and temperature measurements shall be taken as close to the compres-sor inlet and discharge as practical and shall be downstream of the inlet isolation valve and upstream of the discharge isolation valve. An appropriate pressure pulsation damp-ening device (i.e., a pressure snubber) shall be used for the pressure measurement instrumentation. A gas bulb calibration table and curve shall be provided. Calibration shall list/show temperatures from 7.6 to 540 R and the corresponding pressure, using at least 75 data points spaced closer at lower temperatures. Equations, data (i.e., helium property values used), and unit-specific constants (i.e., volumes) used to generate the calibration table/curve shall be provided. Measurements shall be displayed using gauges mounted on a panel attached to the unit. Additionally, a 4 to 20 milliampere (mA) signal shall be provided for the said measurements for remote monitoring. Gauges shall be in accordance with ASME B40.1. All electrical design shall be in accordance with NFPA 70. Enclosures shall be NEMA 4 rated. Field installed (or unused) electrical connections shall be properly capped/sealed prior to shipping. Identification and Marking. All components and instrumentation shall be clearly identified and legibly marked. Identification and marking shall not interfere with the operation of the unit. Additionally, a name plate on the unit shall include the model/part number, serial number, date of manufacture, capacity (horsepower), and manufacturer name/address. The method of marking and identification shall be selected so that the en-vironment will not degrade its original clarity and appearance. Design. Design Construction. The design and construction of the unit shall conform to the ASME BPVC Section VIII and ASMEB31.3. All components, system elements, and materials shall be selected, designed for, and compatible with the most severe service conditions expected, as specified herein. Pressure containing parts shall be pressure tested in accordance with the specifications herein. Use of aluminum and its alloys shall not be allowed for construction, unless otherwise approved by the Contracting Officer. All materials of construction shall be approved prior to fabrication. Pressure Relief. An ASME BPVC Section VIII, Division 1, certified pressure relief valve for liquid helium service shall be provided in the discharge piping (upstream of the unit discharge isolation valve). The device shall be selected and sized to preclude over-pressurizing an operating and/or nonoperating unit if discharge is completely blocked and a trapped (confined) volume full of liquid helium exists in the unit. Discharge shall be oriented to prevent impingement onto/at personnel. Protective Coating. Carbon steel surfaces exposed to the environment shall be protected using a three-coat system, consisting of a single application of inorganic zinc (2.5 to 4 mils), an intermediate/tie coat, and a top coat. The 300-series SST's do not require pro-tective coating. However, a dissimilar metal weld, involving a 300-series SST, shall be protectively coated a minimum of 2 inches beyond the weld line. Surfaces to be protected shall be properly degreased and cleaned per manufacturer's recommendations. Surface preparation procedures, protective coating system, and selected colors shall be approved prior to purchase and application. Dissimilar Metals. To preclude galvanic corrosion, a suitable material or dielectric shall be used to prevent the contact of dissimilar metals. This procurement is being conducted under the Simplified Acquisition Procedures (SAP). NASA/KSC intends to purchase the items from Cryo Technologies, 761 Brookside Road, Allentown, PA 18106. Cryo Technologies is the only known responsible source capable of satisfying our requirements. The authority for Other Than Full and Open Competition is 10 U.S.C. 2304(c)(1) The Government intends to acquire a commercial item using FAR Part 12. Accordingly, any interested firms must demonstrate that they have successfully produced compressors that satisfy the requirements described above, are currently used in industry, and are available commercially. See NASA Specific Numbered Note "A". Interested firms have fifteen (15) days from the publication of this synopsis to submit, in writing to the identified point of contact, their qualifications and capabilities to respond to the requirement or submit proposals. Oral communications are not acceptable in response to this notice and will not be considered. This notice of intent is not a request for competitive proposals. However, all written responses/proposals received within fifteen days after date of publication of this synopsis will be considered by the Government. Proposals/responses received after the fifteen days or without the required information will be considered non-responsive to the synopsis and will not be considered. Information received will normally be considered solely for the purpose of determining whether to conduct a competitive procurement. A determination by the Government not to compete this proposed procurement on a full and open competitive basis, based upon responses to this notice, is solely within the discretion of the Government. An Ombudsman has been appointed. See Internet Note "B". Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html Posted 06/23/99 (D-SN346178). (0174)

Loren Data Corp. http://www.ld.com (SYN# 0277 19990625\43-0001.SOL)