A detailed survey of the radiation from the N.S. Savannah shield was made. The study was accomplished with the reactor at its full power of 69 Mw during a cruise of 2821 miles. The results of the detailed shield survey show that the design dose rate of 0.5 rem/yr for passenger spaces is not exceeded in any region to which passengers have access. In the area restricted to crew access the design dose rate of 5.0 rem/yr is nowhere exceeded except in a small region on "D" deck in a room to which entry can readily be controlled. Specifications for cargo-hold dose rates, 0.5 rem/yr at 1/5 full power, are satisfactorily met. Additional data obtained include measurements of special points for comparison with dose rates predicted in design calculations, and an experiment examining the result of loss of water from the Savannah's subreactor shield tanks. Predicted dose rates were conservatively higher than the dose rates measured, and the result of the water-loss experiment showed that even with a total emptying of the tanks a safe condition exists only a few feet from the shield.(Author)

  • Corporate Authors:

    Oak Ridge National Laboratory

    Department of Energy
    Oak Ridge, TN  United States  37831
  • Authors:
    • Blizard, E P
    • Blosser, T V
    • Freestone Jr, R M
  • Publication Date: 1962-8-29

Media Info

  • Pagination: 30 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026597
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Contract Numbers: W-7405-eng-26
  • Files: TRIS
  • Created Date: May 4 1973 12:00AM