(a) A licensee shall maintain a record of the activity of a strontium-90 source required by § 35.433 for the life of the source.
(b) The record must include—
(1) The date and initial activity of the source as determined under § 35.432; and
(2) For each decay calculation, the date and the source activity as determined under § 35.433.
authority: Atomic Energy Act of 1954, secs. 81, 161, 181, 182, 183, 223, 234, 274 (
42 U.S.C. 2111,
2201,
2231,
2232,
2233,
2273,
2282,
2021; Energy Reorganization Act of 1974, secs. 201, 206 (
42 U.S.C. 5841,
5846;
44 U.S.C. 3504 note
source: 67 FR 20370, Apr. 24, 2002, unless otherwise noted.
cite as: 10 CFR 35.2433