NS SAVANNAH CONTAINMENT INTEGRITY QUARTERLY LEAK RATE TEST RESULTS

Two containment leak tests were conducted on the N.S. Savannah to satisfy U.S. Coast Guard annual inspection requirements and to determine the current containment status. The first test was a post-maintenance test with the reactor completely cooled down. The primary system was at approximately 50 psig and 100 F. Decay heat was removed by the letdown coolers. Test data was recorded to determine leak rate by both reference and absolute methods. The second test, made following a two-day sea trial, was conducted in the "as-is" condition. The plant was shut down and cooled to about 200 F. Relatively stable temperatures were achieved in the containment and primary system. The primary objective of the test was accomplished with approval of the U.S. Coast Guard. Secondary objectives were: to conduct a pressure proof test on electrical fittings installed in penetration boxes; to determine containment air leakage following removal of the emergency cooling salt water pump and flow distribution valves; to determine reduction of the reference system leakage; to prove containment cooling fans could start from a dead stop in a 60 psig air atmosphere; and to determine the validity of containment leak rate data.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number STS-45.
  • Corporate Authors:

    Babcock and Wilcox Company

    N.S. Savannah Technical Staff
    Galveston, TX  USA 

    Todd Shipyards Corporation

    Los Angeles Division
    San Pedro, CA  USA 
  • Authors:
    • Taylor, J H
  • Publication Date: 1964-5

Media Info

  • Features: Figures;
  • Pagination: 23 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026742
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: STS-45
  • Contract Numbers: MA-3377
  • Files: TRIS, USDOT
  • Created Date: Feb 14 1973 12:00AM