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.
authority: Atomic Energy Act of 1954, secs. 53, 57, 62, 63, 81, 161, 182, 183, 223, 234, 1701 (
42 U.S.C. 2073,
2077,
2092,
2093,
2111,
2201,
2232,
2233,
2273,
2282,
2297f; Energy Reorganization Act of 1974, secs. 201, 202, 206, 211 (
42 U.S.C. 5841,
5842,
5846,
5851; Nuclear Waste Policy Act of 1982, sec. 180 (
42 U.S.C. 10175);
44 U.S.C. 3504 note
source: 60 FR 50264, Sept. 28, 1995, unless otherwise noted.
cite as: 10 CFR 71.83