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The design study and component development of the 630A Nuclear Steam Generator for maritime application has resulted in five major design evolutions. The first four designs utilize concentric ring, highly enriched fuel elements. The most recent of these, the Mark 4, differs from its predecessor principally in that it uses either air or helium at higher pressures as the primary working fluid, has a 55-cell rather than an 85 cell reactor core, and has gas circulators enclosed entirely within the primary loop. The 630A Mark 5 discribed in this report utilizes all the features of the 630A Mark 4 except that the reactor has low-enrichment, pin-type fuel elements. (Author)

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number GEMP-326 (Rev).
  • Corporate Authors:

    General Electric

    Marine Turbine & Gear Engineer, 1100 Western Ave
    Lynn, MA  United States  01910
  • Publication Date: 1964-12-10

Media Info

  • Pagination: 34 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026776
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: GEMP-326 (Rev)
  • Contract Numbers: AT(40-1)-D-2847
  • Files: TRIS, USDOT
  • Created Date: Apr 13 1973 12:00AM