A COMPARISON OF THE NMSR PROTOTYPE (SPARE) CONTROL ROD AND THE NMSR SERVICE CONTROL ROD

The NMSR prototype control rod is tested to determine the feasibility of using it as an NMSR spare rod. Tests show satisfactory physical alignment and fit of the prototype in the NMSR core and small differences between the prototype and service blades. Chemically, the poison plate of the prototype blade contains 1.2 weight percent boron compared to 1.7 weight percent boron for the service blades. Reactivity measurements on poison sections and on follower sections of the prototype and service blades show no difference in the reactivity of either within 1% of the hold-down power of the blade. The prototype is therefore suitable for use as an NMSR spare blade, contingent upon the insertion of filler blocks in the hollow portion of the follower blade.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number BAW-TM-508.
  • Corporate Authors:

    Babcock and Wilcox Company

    Atomic Energy Division
    Lynchburg, VA  USA  24504
  • Authors:
    • Mortenson, J H
  • Publication Date: 1960-6

Media Info

  • Features: References; Tables;
  • Pagination: 9 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026312
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: BAW-TM-508
  • Contract Numbers: AT(30-3)-274
  • Files: TRIS, USDOT
  • Created Date: May 11 1973 12:00AM