NS SAVANNAH ANALYZER-CRYSTAL CALIBRATION

This reports on a study initiated to calibrate the analyzer crystal instrumentation in a fixed geometry using filter beds and gas samplers. This is only one portion of a program whose over-all purpose is the calibration of shipboard equipment for various radio isotopes to provide the capability of absolute counting for these isotopes. The study determined that though activities in the MPC range for I131 can be detected, the minimum sensitivity for A41 is three decades above MPC. Either high activity in the buffer sea surge tank gas volume or a shielding correction for argon in water could facilitate the A41 calibration. The calibrations in this report may serve as a basis for geometry and efficiency extrapolations in other isotopes. The report recommends an improved shielding arrangement for the crystal. Among the many figures included are an I131 deposit schematic and a schematic of A41 activation. The appendices describe the gas sampler and gas sampling procedure.

• Supplemental Notes:
  • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number STS-71.
• Corporate Authors:

  Babcock and Wilcox Company

  N.S. Savannah Technical Staff
  Galveston, TX  United States 
• Publication Date: 1966-2

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 43 p.

Subject/Index Terms

• TRT Terms: Nuclear powered ships; Nuclear reactors; Radioactive wastes; Radioisotopes; Safety; Tracers (Chemistry)
• Old TRIS Terms: Nuclear reactor safety; Radioisotope tracers
• Subject Areas: Marine Transportation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00026983
• Record Type: Publication
• Source Agency: Maritime Administration
• Report/Paper Numbers: STS-71
• Files: TRIS, USDOT
• Created Date: May 11 1973 12:00AM