SOLICITATION NOTICE
43 -- ZERO BOIL-OFF DEMONSTRATION LIQUID NITROGEN PUMP SYSTEM
- Notice Date
- 3/6/2003
- Notice Type
- Solicitation Notice
- Contracting Office
- NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812
- ZIP Code
- 35812
- Solicitation Number
- 4200001578
- Archive Date
- 3/6/2004
- Point of Contact
- Betty C. Kilpatrick, Contract Specialist, Phone (256) 544-0310, Fax (256) 544-4080, Email betty.kilpatrick@msfc.nasa.gov - Cynthia B. Hollingsworth, Contracting Officer, Phone (256) 544-1656, Fax (256) 544-6062, Email cynthia.hollingsworth@msfc.nasa.gov
- E-Mail Address
-
Email your questions to Betty C. Kilpatrick
(betty.kilpatrick@msfc.nasa.gov)
- Description
- NASA/MSFC plans to issue a Request for Quotation (RFQ) for Zero Boil-Off Demonstration Liquid Nitrogen Pump System Specifications for Zero Boil-Off Demonstration Liquid Nitrogen Pump System This document describes the specifications for a pump system to be used for destratificaton of liquid nitrogen in a 639ft3 cryogenic storage vessel . The pump system shall consist of a pump, motor, cables, power supply, and controller. Background The Zero-Boil Off Demonstration (ZBO Demo) is an experiment to be conducted at the NASA Marshall Space Flight Center. The demonstration is to show that stored cryogenic fluids can be cooled by a heat removal system consisting of a LN2 pump, flow-meter spray-bar heat exchanger, and Joule Thompson / Visco-jet. At the bottom of the vessel, the LN2 pump is to be mounted with its flow directed across the flow meter and up the spray-bar/heat exchanger. The flow is also to be directed across the Visco jet/Joule Thompson expansion valve, to initiate heat removal. The flow momentum, when it reaches the surface, needs to be great enough to penetrate the surface and mix with the vapor. Operating Conditions The pump, motor, and cables which are internal to the vessel, shall satisfy the design requirements under the following: Environmental conditions Media: Liquid Nitrogen, Liquid Hydrogen and vacuum Minimum Temperature: 20K Maximum Temperature: 300K Maximum Pressure: 20PSID Minimum Pressure: 1x10 -6 Torr Nominal flow conditions Fluid: Liquid Nitrogen Inlet temperature: 81K Delta pressure: 10-20 PSID Pump Inlet/Exit diameter: 2 inches Nominal flow rate: 30.0 GPM Variable flow rate: 10 GPM to 40.0 GPM Pressure rise across pump: 10.0 ft *The materials and electrical components of the motor, pump and cables need to be compatible with use in liquid hydrogen but the flow rates are to be based on operation in liquid nitrogen. Design Requirements 1. The centrifugal pumping system shall be designed for intermittent and continuous operation. a. Typical intermittent operation will consist of being on, at any flow rate within the operating range, for 2 minutes followed by being off for 20 minutes. b. Typical continuous operation will consists of operation at any flow rate in the operating range for periods up to 80 hours with a total operating life greater than 10,000 hours. 2. The pump and motor housing design pressure shall be greater than 50PSIA in accordance with ASME Section VIII, Division 1. 3. The pumped fluid shall flow around the motor to provide cooling 4. The pump shall include an inducer that will increase performance in a marginal NPSHA application. 5. The pump shall be supplied with bearings that can run immersed in Liquid Hydrogen or Liquid Nitrogen and have self -lubrication properties for reliable operation in very low lubricity environment. 6. All materials and components of the pump & motor shall be compatible for immersion operation in liquid hydrogen and/or liquid nitrogen. 7. The motor shall be a variable-speed, brush-less, direct-current, motor. 8. The pump exit shall have an inside diameter of 2 inch. 9. The pump/motor housing shall accommodate mounting inline. An example is shown in Figure 1. 10. The vertical height of pump/motor assembly shall not exceed 7 inches, and the outside diameter shall not exceed 5.5 inches. Figure #1 Electrical Requirements 1. The pump power supply shall operate on 208 V 3 phase AC power. 2. The electrical cable attached to the motor shall be 20 meters long 3. The pump system (motor, power supply, controller & cables) shall conform to the standards of NFPA 70-1999, the National Electric Code. 4. The hazardous area classification per NFPA 70 shall be Class I, Group B, Division II unless the Supplier?s design requires a Division I rating. 5. The pump system (motor, power supply, controller & cables) shall conform to the standards of NFPA 50A and 50B. 6. The pump system (motor, power supply, controller & cables) shall conform to the FCC Part 15, subpart J of Docket 20780, Class B specification for radiated and conducted emissions. Controls and Instrumentation Requirements 1. Pump speed shall be the primary operating variable. 2. The Supplier shall provide all equipment and instrumentation to control the pump over a wide envelope of speeds. A Variable Frequency Drive (VFD) controller shall be used to perform this function. 3. Instrumentation shall include a measurement of power being supplied to the pump motor. 4. The Supplier shall provide an interface for remote operation and monitoring of the pump controller. The interface shall be designed so that unit startup, normal operations, shutdown, and system monitoring can be accomplished from the customer?s remote operation station. 5. All analogue instrumentation and control that is physically accessible by the customer and external to the pump system shall be 4 to 20 mA. 6. All discrete instrumentation and control that is physically accessible by the customer and external to the pump system shall be 0 to 28 VDC. Test Requirements 1. The pump flow rates shall be demonstrated in a liquid with a viscosity and density similar to liquid nitrogen. 2. The motor performance shall be demonstrated in liquid nitrogen. 3. The pump system radiated and conducted emission levels shall be verified. Cleaning and Packaging 1. Prior to shipping, all wetted surfaces shall be thoroughly cleaned to remove all dirt, grease, oil, etc and then sealed in a contamination barrier such as a polyethylene bag. 2. The pump shall be packaged in a manner to allow shipment via common carrier. The packaging shall be designed to prevent damage that may occur during shipment via common carrier. 3. The Contractor shall provide the customer with any special tools required for handling or installation. Delivery Requirements Deliverables shall include 1. Pump and motor assembly with 20 meter cable 2. Power supply and Controller 3. Operation manual 4. Test documentation 5. Inspection reports This procurement is being conducted under the Simplified Acquisition Procedures (SAP). NASA/MSFC intends to purchase the item from Barber Nichols Barber-Nichols Inc. 6325 W. 55th Ave Arvada, CO 80002 This recommendation is made pursuant to FAR 13,106-1(B)(1). The Government intends to acquire a commercial item using FAR Part 12. Interested organizations may submit their capabilities and qualifications to perform the effort in writing to the identified point of contact not later than 4:30 p.m. local time on March 13, 2003. Such capabilities/qualifications will be evaluated solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. A determination by the Government not to compete this proposed effort on a full and open competition basis, based upon responses to this notice is solely within the discretion of the government. Oral communications are not acceptable in response to this notice. FAX all questions to 246-544-4080. All responsible sources may submit an offer which shall be considered by the agency. An Ombudsman has been appointed. See NASA Specific Note "B". Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html
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- Record
- SN00272790-W 20030308/030306213840 (fbodaily.com)
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