5.7 Warning Signs and Labels

 

Picture of a radioactive sign

Caution – Radioactive Materials  

This warning sign is used to indicate that radioactive materials may be used or stored in the area. 

Caution – Radiation Area  

This warning sign is used to indicate areas where radiation levels may exist that are in excess of 5 mrem per hour at a distance of 30 cm from the source of radiation, or from any surface that the radiation penetrates.

Caution – High Radiation Area  

This warning sign is used to indicate areas where radiation levels may exist that are in excess of 100 mrem per hour at a distance of 30 cm from the source of radiation, or from any surface that the radiation penetrates.

Caution – Very High Radiation Area  

This warning sign is used to indicate areas where radiation levels may exist that are in excess of 500 mrem per hour at a distance of 1 meter from the source of radiation, or from any surface that the radiation penetrates.

Radiation Warning Labels  

Use radiation warning labels to mark containers and equipment used to manipulate or store radioactive materials, contaminated items, or other sources of ionizing radiation.

Remove or obliterate all radiation warning labels on items that no longer contain radioactive material, are no longer contaminated as determined by the appropriate survey, or can no longer produce ionizing radiation.