The chloride level in the secondary and intermediate cooling systems of the N.S. Savannah rose above specified limits during operation. The supplementary startup boiler feedwater was indicative of the chloride concentration in the secondary system. A thorough investigation determined that chlorides got into the secondary systems because of carryover in the evaporator discharge entering the system through the seal line to the salt water preheater drain pump, and leakage of the forward tube sheet of auxiliary condenser No. 2. The chloride concentration was restricted to the carbon steel portion where it was not injurious. The evaporators were modified to reduce carryover, and the path to the secondary system was closed by utilization of a self-sealing drain pump. The leaks in the condenser tube sheet were repaired. Chloride levels in the starboard steam generator and the intermediate cooling system were only slightly over specification and were not associated with prolonged operation at elevated temperatures and pressures.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number NSS-108.
  • Corporate Authors:

    New York Shipbuilding Corporation

    Savannah Nuclear Technology Department
    Yorktown, VA  United States 
  • Publication Date: 1962-2-27

Media Info

  • Pagination: 3 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026494
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: NSS-108
  • Contract Numbers: MA-1675
  • Files: TRIS, USDOT
  • Created Date: Feb 6 1973 12:00AM