Appendix B to Part 172 - Trefoil Symbol
49:2.1.1.3.9.11.25.1.4 : Appendix B
Appendix B to Part 172 - Trefoil Symbol
1. Except as provided in paragraph 2 of this appendix, the
trefoil symbol required for RADIOACTIVE labels and placards and
required to be marked on certain packages of Class 7 materials must
conform to the design and size requirements of this appendix.
2. RADIOACTIVE labels and placards that were printed prior to
April 1, 1996, in conformance with the requirements of this
subchapter in effect on March 30, 1996, may continue to be
used.
1 =
Radius of Circle - Minimum dimensions 4 mm (0.16 inch) for markings
and labels 12.5 mm (0.5 inch) for placards 2 = 1 1/2 Radii 3 = 5
radii for markings and labels 4 1/2 radii for placards. [60 FR
50306, Sept. 28, 1995, as amended by Amdt. 172-143, 61 FR 20750,
May 8, 1996]