NS SAVANNAH-MAXIMUM CREDIBLE ACCIDENT PRESSURE SUPPRESSION REPORT

The capabilities of various methods to provide pressure suppression in the N.S. Savannah containment vessel following a maximum credible accident (MCA) have been investigated. Four pressure suppression schemes were examined: 1. The use of one or more containment cooling system heat transfer coils for heat removal. 2. A water spray inside the containment vessel. 3. Flooding the lower void area to provide cooling external to the vessel. 4. Providing constant head removal rates by an (as yet) undetermined heat transfer system. The results of this investigation indicate that any method capable of providing a net cooling rate of about 1.5 million Btu/hr will reduce the containment pressure to about 65 psig within 24 hours after the MCA. Subsequent to this investigation, tests were performed to determine the characteristics of the containment cooling system for pressure suppression. Results of the tests demonstrated that containment cooling coil cooling water pressure can be maintained greater than the containment pressure, to prevent containment leakage.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number STS-44.
  • Corporate Authors:

    Babcock and Wilcox Company

    N.S. Savannah Technical Staff
    Galveston, TX  USA 

    Todd Shipyards Corporation

    Los Angeles Division
    San Pedro, CA  USA 
  • Publication Date: 1965-2

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 103 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026908
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: STS-44
  • Contract Numbers: MA-3760
  • Files: TRIS, USDOT
  • Created Date: Jun 15 1973 12:00AM