Naval Sea Systems Command, 2531 Jefferson Davis Hwy., Arlington, VA 22242-5160

93 -- COMPOSITE PUMP COMPONENTS POC Pete Troia, Contracting Officer, (703) 602-0200, EXT. 430. 93 - COMPOSITE PUMP COMPONENTS POC (03Y3) J. Gutierrez (703) 602-6826 Ext 301. Sources are sought by the Naval Sea Systems Command for the manufacture of composite material centrifugal pump replacement components, such as impellers, shaft sleeves, casing wear rings, impeller wear rings, throat bushings, and box bushings for use in many Navy shipboard applications. Composite material component designs are being considered as equivalent replacement to metallic components when price, material characteristics and end item performance demonstrate adequacy and interchangeability with baseline metallic part in accordance with guidance set forth by NAVSEA 03Y3. Composite components may be procured for Navy use via direct buys from fleet repair activities, direct buys from ship and/or competitive buys through the Navy and Defense Logistic Agency supply system. Acceptance criteria with minimum material characteristics, toxicology requirements and end item performance testing is available for review from SEA 03Y3 point of contact. Vendors considering participating in this Navy program shall obtain prior qualification approval from NAVSEA before being considered as acceptable composite parts suppliers. All testing and composite material parts qualification expenses shall be the sole responsibility of the vendor making the offer and no cost will be borne by the US Navy. Composite replacement components shall meet all operational characteristics of the metallic part being replaced, including but not limited to strength and hydraulic performance. Variance in centrifugal pump performance shall not exceed +5% or -2% of Original Equipment Manufacturer design performance characteristic curve and shall meet OEM design rated point. In the case of impellers, a vane geometry calculation may be submitted in lieu of actual performance testing after design validation of the first unit has been qualified. Complete level of qualification testing requirements and guidance is available from NAVSEA 03Y3 upon request. Composite components are intended for use in a limited but vast number of centrifugal pumps applications/services operating where the total is at or below 200 horsepower and 250 degrees F at a maximum speed of 360 RPM. Composite components would be used in pumps that operate in fresh water, seawater, brine, waste water with 20% hydrocarbon content, and other aggressive fluids. A 10,000 hours service life is expected from components subject to wear or deterioration. Composite material parts shall demonstrate the following properties at minima, a tensile strength of 12,000 PSI, a flexural strength of 22,000 PSI, a compressive strength of 35,000, a shear strength of 13,000 PSI, a modulus of elasticity of 1,400,000 PSI (tension with a maximum elongation of break of 1.5%), a bond strength of 2,200 PSI, a hardness of 40 Barcol, a heat distortion temperature of 250 degrees F, and an Izod notched impact of 2.0ft-lb/in. Composite components shall also demonstrate the following properties, moisture absorption of 2.0% (maximum) in 24 hours, and a coefficient of thermal expansion of 2 x 10-5 inch/inch/degrees C. Composite impellers shall exhibit a drive strength equal to 125% locked rotor torque. Critical interface dimensions shall not deviate from those of the metallic part under submerged and dry conditions in order to insure part interchangeability. Variances in non-critical, non-interface dimensions may be considered but NAVSEA approval shall be obtained prior to submission. Composite components must pass shock and vibration qualification on a representative sample with option to request shock extension approval to other smaller sizes of the same part. Sources are requested to contact NAVSEA 03Y3 point of contact with technical information by 31 October 1995. Only approved and qualified vendors and products will be considered for provisioning of composite material parts through the Navy supply system. (0250)

Loren Data Corp. http://www.ld.com (SYN# 0292 19950908\93-0001.SOL)