(a) Except as provided in Sec. 173.4, when a limited quantity radioactive material meets the definition of another hazard class or division, it must be--
(1) Classed for the additional hazard;
(2) Packaged to conform with the requirements specified in Sec. 173.421(a)(1) through (a)(5) or Sec. 173.424(a) through (g), as appropriate; and
(3) Offered for transportation in accordance with the requirements applicable to the hazard for which it is classed.
(b) A limited quantity Class 7 (radioactive) material which is classed other than Class 7 in accordance with this subchapter is excepted from the requirements of Secs. 173.422(a), 172.203(d), and 172.204(c)(4) of this subchapter if the entry ``Limited quantity radioactive material'' appears on the shipping paper in association with the basic description.