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Minnesota Legislature

Office of the Revisor of Statutes

4731.2300 CAUTION SIGNS.

Subpart 1.

Radiation symbol.

Unless otherwise authorized by the commissioner, the standard radiation symbol used to designate a radiation hazard is as prescribed in this subpart. The radiation symbol is the three-bladed design:

20 picas - Insert radiation hazard symbol here.


the cross-hatched area must be magenta, purple, or black; and


the background must be yellow.

Subp. 2.

Exception; radiation symbol.

Notwithstanding the requirements of subpart 1, licensees may label sources, source holders, or device components containing sources of licensed materials that are subjected to high temperatures with conspicuously etched or stamped radiation caution symbols and without a color requirement.

Subp. 3.

Additional information.

In addition to the contents of signs and labels prescribed in this chapter, a licensee may provide, on or near the required signs and labels, additional information, as appropriate, to make individuals aware of potential radiation exposures and to minimize the exposures.

Statutory Authority:

MS s 144.1202; 144.1203


29 SR 755

Published Electronically:

March 12, 2009