10 CFR 71.83 - Assumptions as to unknown properties.

§ 71.83 Assumptions as to unknown properties.

When the isotopic abundance, mass, concentration, degree of irradiation, degree of moderation, or other pertinent property of fissile material in any package is not known, the licensee shall package the fissile material as if the unknown properties have credible values that will cause the maximum neutron multiplication.

Title 10 published on 06-Jun-2018 04:00

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR Part 71 after this date.

  • 2017-11-15; vol. 82 # 219 - Wednesday, November 15, 2017
    1. 82 FR 52823 - Miscellaneous Corrections
      GPO FDSys XML | Text
      NUCLEAR REGULATORY COMMISSION
      Final rule.
      This rule is effective December 15, 2017. The material incorporated by reference was previously approved by the Director of the Federal Register.
      10 CFR Parts 2, 9, 40, 50, 61, 71, 73, and 110