Type A packaging

Type A packaging means packaging which is designed in accordance with the general packaging requirements and is adequate to prevent the loss or dispersal of the radioactive contents and to retain the efficiency of its radiation shielding properties if the package is subject to normal transportation. 

Type B packaging means packaging which meets the standards for Type A packaging, and, in addition, meets the standards for hypothetical accident conditions for transportation (1). 

Type A packages, the basic types of packagings or freight containers. They hold activities up to A1 for special form or A2 for other radioactive material. 

Aj and A2 values for radionuclides A means the maximum activity of special form radioactive material permitted in a Type A package. A2 means the maximum activity of radioactive material other than special form radioactive material permitted in a Type A package. The values are listed in appendix 1 to this class. IMO Class 7,2.1... 

AI means the maximum activity of special form Class 7 (radioactive) material permitted in a Type A package. US 173.403... 

A2 means the maximum activity of Class 7 (radioactive) material, other than special form, LSA or SCO, permitted in a Type A package. These values are either listed in Sec. 173.435 or derived in accordance with the procedure prescribed in Sec. 173.433. US 173.403... 

Failure to provide a tamper-indicating device on a Type A package used to ship a Class 7 material. 173.412(a) 5,000. 

Offering in excess of a Type A quantity of a Class 7 material in a Type A packaging. 173.431 15,000. 

The limits for radioactive material contents of excepted packages are such that the radioactivity hazard associated with a total release of contents is consistent with the hazard from a Type A package releasing part of its contents (see Appendix I). 

UN No. 2915 RADIOACTIVE MATERIAL, TYPE A PACKAGE, non-special form, non-fissile or fissile-excepted... 

Type A package components should be designed for a temperature range from -40 to 70°C corresponding to possible ambient temperatures within a vehicle or other enclosure, or package temperatures when the package is exposed to direct... 

Certain materials may react chemically or radiolytically with some of the substances intended to be carried in Type A packages. Tests may be required to determine the suitability of materials to ensure that the containment system is neither susceptible to deterioration cansed by the reactions themselves, nor damaged by the pressnre increase conseqnent npon those reactions. 

A maximum allowable leakage rate for the normal transport of Type A packages has never been defined quantitatively in the Regulations but it has always been required in a practical sense. 

The purpose of these two additional requirements is to demonstrate either an increased capability of a Type A packaging for liquids to withstand impacts and hence to indicate that the fraction of the contents that would be released in an accident would be comparable with that released from a Type A package designed to carry dispersible solids, or to provide a supplementary safety barrier, thereby reducing the probability of the liquid escaping from the package even if it escapes from the primary inner containment components. 

The reasons for additional tests for Type A packaging for compressed or uncompressed gases are similar to those for Type A packagings for Uqnids (see para. 648.1). However, since in the case of gases failnre of the containment would always... 

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