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Description - Figure 3.1 - NORM Classification Flowchart

The NORM Classification Flowchart provides a method for decision making on the level of radiation protection required for the specific NORM material in question.

For a member of the public, following an initial review of the material it should be determined if the dose resulting from exposure to the material has the potential to exceed 0.3 millisieverts per year. If the material does not have the potential to cause a dose in excess of 0.3 millisieverts per year it can be considered unrestricted. If the material does have the potential to cause a dose in excess of 0.3 millisieverts per year a radiation dose assessment should be completed. The radiation dose assessment should determine if exposure to the material will result in a dose greater than 0.3 millisieverts per year. If the material does not result in a dose greater than 0.3 millisieverts per year it can be considered unrestricted. If the material does result in a dose greater than 0.3 millisieverts per year a NORM management program is required. The NORM management program should be reviewed periodically.

For a worker, following an initial review of the material it should be determined if the dose resulting from exposure to the material has the potential to exceed 0.3 millisieverts per year. If the material does not have the potential to cause a dose in excess of 0.3 millisieverts per year it can be considered unrestricted. If the material does have the potential to cause a dose in excess of 0.3 millisieverts per year a radiation dose assessment should be completed. The radiation dose assessment should determine if exposure to the material will result in a dose greater than 0.3 millisieverts per year. If the material does not result in a dose greater than 0.3 millisieverts per year it can be considered unrestricted. If the material does result in a dose greater than 0.3 millisieverts per year a NORM management program is required. The NORM management program should be reviewed periodically. The NORM management program should determine if exposure to the material will result in a dose of less than 1 millisievert per year, between 1 and 5 millisieverts per year, or greater than 5 millisieverts per year. If the material results in a dose less than 1 millisievert per year the material can be considered unrestricted. If the material results in a dose in between 1 and 5 millisieverts per year a dose management program is required. If the material results in a dose greater than 5 millisieverts a radiation protection management program is required.