Small Gram Quantity Shielded Containers in a RAM Packaging.

Title 10 of the Code of Federal Regulations, Section 71.47 [Ref. 1] requires that “each package of radioactive materials offered for transportation must be designed and prepared for shipment so that under conditions normally incident to transportation the radiation level does not exceed 2 mSv/h (200 mrem/h) at any point on the external Surface of the package, and the transport index does not exceed 10.” An addendum to the Model 9977 Safety Analysis Report for Packaging [Refs. 2 and 3] has been developed which authorizes the shipment of limited quantities of radioactive materials with limited characterization but conservatively utilizing dose rate measurements of the content container prior to loading into the package for shipment. For high activity contents, containers that provide gamma and neutron shielding have been designed and certified. This paper discusses the dose rate measurement principle and the analysis of the shielded containers.