Washington State University
SAFETY POLICIES AND PROCEDURES MANUAL

RADIATION SAFETY
9.32
Revised 3-02
Radiation Safety Office
335-8916

Radiation Signs and Labels

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RESPONSIBILITY
Authorized users of radioactive materials or radiation machines are responsible for ensuring that all rooms, areas, and containers that contain radioactive materials or radiation machines remain properly posted or tagged. Deficiencies in compliance may result in suspension or cancellation of authorization to use radioactive materials or radiation machines.

Authorized users of radioactive materials or radiation machines must display the appropriate X-ray producing equipment (red on a yellow background) or radiation sign or label (magenta on a gold background). Examples are shown in the PDF version of SPPM 9.32.1.

Radiation Safety provides signs for labeling machines, laboratory doors, hoods, and storage areas.
Current Signs
All signs and labels must reflect current laboratory status for use of radioactivity or machines. Radiation Safety Office personnel conduct a checkout survey and remove signs and labels when not needed.
Labels
Label all radioactive materials, containers, and radioactively-contaminated equipment with radioactive warning tape.

Label each liquid waste bottle with a Liquid Waste Reporting label for liquid waste. (See example in the PDF version of SPPM 9.32.2.) Include the isotope, activity, reference date, and percent of chemical composition. Contact the RSO to obtain copies of the label.

If any area becomes contaminated, place radioactive warning tape around the area. Inform the RSO if an area is contaminated. The RSO will assist in the evaluation and ensure that required shielding and/or taping are installed.
Faded Signs/Labels
Replace faded signs and labels. Contact the RSO to obtain replacement signs or labels; telephone 335-8916.
POSTING SIGNS
Authorized users must ensure that signs remain appropriately posted in all locations in which radioactive materials or radiation machines are stored or used. Such spaces include:
Radiation Areas
Radiation Safety Office personnel conspicuously post locations where radiation exists at such levels that a major portion of the body could receive a dose of five mrem (0.05 mSv) in any one hour at 30 centimeters from the source of radiation or from any surface that the radiation penetrates.

RSO personnel post such locations with a sign or signs bearing the radiation caution symbol and the following words:

CAUTION-RADIATION AREA

High Radiation Areas

Radiation Safety Office personnel conspicuously post each location where radiation exists at such levels that a major portion of the body could receive a dose in excess of 100 mrem (1 mSv) in any one hour at 30 centimeters from the source of radiation or from any surface that the radiation penetrates.

RSO personnel post such locations with a sign or signs bearing the radiation caution symbol and the following words:

CAUTION-HIGH RADIATION AREA
Use control devices approved by the Radiation Safety Office to restrict access to high radiation areas.
Radioactive Material
RSO personnel conspicuously post rooms and areas in which any radioactive material (other than natural uranium or thorium) is used or stored in amounts exceeding ten times the minimum quantity of radioactive material requiring labeling, in accordance with the table in WAC 246-221-300.

To view this table, go to the Washington Administrative Code web site at:
http://apps.leg.wa.gov/wac/

Select Title 246: Health, Department of

Select Chapter 246-221: Radiation protection standards

Select WAC 246-221-300: Appendix B-Minimum quantities of radioactive material requiring labeling.
RSO personnel post such locations with a sign or signs bearing the radiation caution symbol and the following words:

CAUTION-RADIOACTIVE MATERIAL

Radiation Machines

RSO personnel appropriately post radiation machines and rooms in which radiation machines are stored or used with a sign stating:

CAUTION-X-RAY PRODUCING EQUIPMENT

Exceptions

Posting is not required when:
Contact the Radiation Safety Office to verify each case of an exception to the posting requirements.
LABELING CONTAINERS
Label all containers of radioactive materials.

When an inner container is removed from an outer container, attach a CAUTION-RADIOACTIVE MATERIAL label to the inner container.
Outer Layers
Label each outer container of radioactive material as follows:

CAUTION: RADIOACTIVE MATERIAL

The label should also include, as appropriate:

Labeling Exceptions
Labeling is not required in certain situations, as set forth in WAC 246-221-130. Consult the Radiation Safety Office for specific guidance.