Section 173.428 - Empty Class 7 (radioactive) materials packagingA packaging which previously contained Class 7 (radioactive) materials and has been emptied of contents as far as practical, is excepted from the shipping paper and marking (except for the UN identification number marking requirement described in § 173.422(a) ) requirements of this subchapter, provided that-
(a) The packaging meets the requirements of § 173.421 (b), (c), and (e) of this subpart;(b) The packaging is in unimpaired condition and is securely closed so that there will be no leakage of Class 7 (radioactive) material under conditions normally incident to transportation;(c) The outer surface of any uranium or thorium in its structure is covered with an inactive sheath made of metal or some other substantial material;(d) Internal contamination does not exceed 100 times the limits in § 173.443(a) ;(e) Any labels previously applied in conformance with subpart E of part 172 of this subchapter are removed, obliterated, or covered and the "Empty" label prescribed in § 172.450 of this subchapter is affixed to the packaging; and(f) The packaging is prepared for shipment as specified in § 173.422 .Amdt. 173-244, 60 FR 50307, Sept. 28, 1995, as amended by Amdt. 173-244, 61 FR 20752, May 8, 1996; 64 FR 51919, Sept. 27, 1999; 69 FR 3677 , Jan. 26, 2004; 80 FR 72928 , Nov. 23, 2015