A.
First of all, we need to set aside the general use Type A packages and generally called Type L packages in Japan used for Radioactive Material, excepted packages which are commonly available. All Type B (U), Type B (M) and Type C packages are order-made. Orders are placed with Japan Radioisotope Association (JRIA) at Komagome, Tokyo, who produce the packages and secure approval certificates as necessary. For B (U) packages, unilateral approval from the State of Origin, i.e., the Ministry of Education & Science, Japanese Government, and for B (M) packages, multilateral approval from the competent authorities of the State of Origin, the States of Transit and the State of Destination. Actual shipments must accompany the original certificates of approval. Copies are not accepted. For Special Form radioactive material, JRIA will also secure the certificate of approval for the capsule from the Ministry of Education & Science.

The activity permitted in Types B (U) or B (M) packages are, for Special Form, 3,000 A1 or 100,000 A2 value whichever is lower, and for Other Form, the limit is 3,000 A2. Taking the first radionuclide Ac-225 on Table 10.3.A as example, the A1 value is 0.8 TBq, therefore 0.8 TBq X 3,000 = 2,400 TBq, or the A2 value is 0.006 TBq, therefore 0.006 TBq X 100,000 = 600 TBq. The lower being 600 TBq, the limit of Types B (U) and B (M) packages will be 600 TBq.

For Other Form, the limit will be 0.006 TBq X 3,000 = 18 TBq. so this will be the limit for Other Form in Types B (U) and B (M) packages.

The decision of which packaging will be used, i.e. Type B (U), Type B（M）or Type C packaging, will depend on the radionuclide, whether special form or other form, activity, physical condition, chemical property, purpose of use, state of origin, states of transit, state of destination, name of airline, type of equipment, desired cost of packaging, etc., and the most suitable packaging to transport the intended radioactive material will be selected.