Performance and Evaluation of Two Liquid-Metal Pumps for Sodium-Potassium Service

Abstract

Two identical hermetically-sealed motor-driven centrifugal pumps operated for 1483 hours in NaK loops, one at 1150 degrees F (895 K) and the other at 450 degrees F (505 K). The pumps incorporate NaK-lubricated tilting-pad journal and thrust bearings, and were designed to withstand a nuclear radiation environment. The induction motors were "canned" inside the pump housings to eliminate the need for absolute seals between the pump and the motor. Both pumps operated successfully for the 1403 hours without maintenance. There were no parametric excursions outside the envelopes considered safe for 10,000 or more hours of operation.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1969
Accession Number
ADA380031

Entities

People

  • Roy A. Lottig
  • Sol H. Gorland
  • Thomas P. Hecker

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Centrifugal Pumps
  • Cycles
  • Flowmeters
  • Fluids
  • Frequency
  • Heat Energy
  • Heat Exchangers
  • Instrumentation
  • Liquid Metal Pumps
  • Liquid Metals
  • Liquids
  • Materials
  • Measurement
  • Metals
  • Pressure Transducers
  • Test And Evaluation

Readers

  • Electrical Engineering
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).