Thermal limitations.

A package of Class 7 (radioactive) material must be designed, constructed, and loaded so that—#

(a)The heat generated within the package by the radioactive contents will not, during conditions normally incident to transport, affect the integrity of the package; and#

(b)The temperature of the accessible external surfaces of the loaded package will not, assuming still air in the shade at an ambient temperature of 38 °C (100 °F), exceed either—#

(1)50 °C (122 °F) in other than an exclusive use shipment; or#

(2)85 °C (185 °F) in an exclusive use shipment.#