Warning signs
The responsible party must mark radiation appliances, radioactive substances and their usage and storage locations with the appropriate warning signs.
The Radiation and Nuclear Safety Authority’s Guide ST 1.3 presents the general instructions for marking radiation appliances, radioactive substances and their places of use. The guide applies to both ionizing and non-ionizing radiation.
The warning sign must draw attention to the radiation hazard. The warning contained by the sign must be such that even a person with no knowledge of radiation protection understands it.
When choosing the type of marking, consideration must be given to the severity of the danger caused by the radiation, occupational and environmental conditions and other safety aspects.
Examples of warning and prohibition signs
On this page, you can download warning and prohibition signs as printable versions and as online-appropriate files. Select the appropriate version below.
Warning sign for radioactive substances or ionizing radiation |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 An example of an additional sign used in conjunction with the warning sign for radioactive substances or ionizing radiation |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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An example of a combination sign with the warning sign for a radioactive substance or ionizing radiation and an explanatory text |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 An example of a combination sign that is attached to the shield of a radiation source |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 The warning sign for non-ionizing radiation |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 The warning sign for a strong magnetic field |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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These prohibition signs, among others, are used in conjunction with warning signs if there is a reason to restrict the access of certain persons to facilities with strong magnetic fields: |
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 1. Access denied to persons with pacemakers |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 2. Access denied to persons with metal implants |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 3. No metal objects or watches |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 An example of a combination sign with the warning sign for non-ionizing radiation and an explanatory |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 The warning sign for optical radiation If necessary, an additional sign providing further information about the type of radiation (UV radiation, visible light or infrared radiation) must be used |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 The warning sign for laser radiation |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 An example of a combination sign with the warning sign for laser radiation and an explanatory text |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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 The warning sign for pregnant women |
Vector graphics version (EPS, CMYK) |
| Low resolution (JPG, 150dpi, RGB) |
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