Section 325.60605. Caution signs, labels, and signals.

(1) Symbols prescribed by this rule shall use the conventional radiation caution colors (magenta or purple on yellow  background).   The symbol prescribed by this rule is the conventional 3-bladed design.

(2)     Radiation area. Each radiation area shall be  conspicuously  posted with a sign or signs bearing the radiation caution  symbol  described   in subrule (1) of this rule and the following words:

CAUTION RADIATION AREA

(3)     The following apply to high radiation area:

(a)       Each high radiation area shall be conspicuously posted with a sign or signs bearing the radiation caution symbol and the following words:

CAUTION HIGH RADIATION AREA

(b)     Each high radiation area shall be equipped with a control device which shall either cause the level of radiation to be reduced below that at which an individual might receive a dose of 100 millirems in 1 hour upon entry into the area or shall energize a conspicuous visible or audible alarm signal in a manner that the individual entering and the employer or a supervisor of the activity are made aware of the entry. In  the case of a high radiation area established for a period of 30 days or less, such control device is not required.

(4)     The following apply to airborne radioactivity area:

(a)         As used in these rules, "airborne radioactivity area" means either of the following:

(i)     Any room, enclosure, or operating area in which airborne radioactive materials, composed wholly or partly  of  radioactive   material,  exist   in concentrations in excess of the amounts specified in column 1 of table  1  of appendix B to 10 CFR Part 20.

(ii)     Any room, enclosure, or operating area in which airborne radioactive materials exist in concentrations which, averaged over the number of hours in any week during which individuals are in the area, exceed 25 percent of  the amounts specified in column 1 of table 1 of appendix B to 10 CFR Part 20.

(b)      Each airborne radioactivity area shall be conspicuously posted with a sign or signs bearing the radiation caution symbol described in subrule (1) of this rule and the following words:

CAUTION AIRBORNE RADIOACTIVITY AREA

(5)     The following apply to additional requirements:

(a)      Each area or room in which radioactive material is used or stored and which contains any radioactive material (other than natural uranium or thorium) in any amount exceeding 10 times the quantity  of   such  material specified in appendix C to 10 CFR Part 20 shall be conspicuously posted with a sign or signs bearing the radiation caution symbol described in subrule (1) of this rule and the following words:

CAUTION RADIOACTIVE MATERIALS

(b)     Each area or room in which natural uranium or thorium is  used   or stored in an amount exceeding  100   times  the  quantity   of  such  material specified in appendix C to 10 CFR Part 20 shall be conspicuously posted with a sign or signs bearing the radiation caution symbol described in subrule (1) of this rule and the following words:

CAUTION RADIOACTIVE MATERIALS

(6)     The following apply to containers:

(a)        Each container in which is transported, stored, or used a quantity of any radioactive material (other than natural uranium or thorium) greater than the quantity of such material specified in appendix C to 10 CFR Part 20 shall bear a durable, clearly visible label bearing the radiation caution symbol described in subrule (1) of this rule and the following words:

CAUTION RADIOACTIVE MATERIALS

(b)     Each container in which natural uranium or thorium is transported, stored, or used in a quantity greater than 10 times the quantity specified in appendix C to 10 CFR Part 20 shall bear a durable, clearly visible label bearing the radiation caution symbol described in subrule (1)  of this rule and the following words:

CAUTION RADIOACTIVE MATERIALS

(c)    Notwithstanding the provisions of subrule (6)(a) and (b) of this rule a label shall not be required under either of the following circumstances:

(i)         If the concentration of the material in the container does not exceed that specified in column 2 of table 1 of appendix B to 10 CFR Part 20.

(ii)          For laboratory containers, such as beakers, flasks, and test tubes, used transiently in laboratory procedures, when the user is present.

(d)    Where containers are used for storage, the labels required in this subrule shall state also the quantities and kinds of radioactive materials in the containers and the date of measurement of the quantities.Also see Occupational Health Standard Part 476 Specifications  for Accident Prevention Signs and Tags, Rule 4501.

History: 2009 AACS.