Excepted packages

Table 15.8 Activity limits for excepted packages (except mixtures of radionuclides) ...

In packaging, thin PVDC films are used as barrier layers in laminates. PVDC dispersion coatings provide very good barrier properties on paper, regenerated cellulose, OPP and other plastic films. The coatings can also be manufactured so that they are heat sealable. Because of their heat sealability, fat and oil resistance and good flexibility, PVDC polymers are exceptional packaging materials. 

Small quantities of fissile material are excepted fissile excepted) from some fissile packaging requirements. They are not, however, excepted from the requirements appropriate to their other radioactive properties. Reduced requirements also apply to the following excepted packages ... 

Articles manufactured from natural or depleted uranium or natural thorium Manufactured articles in which the sole radioactive material is unirradiated natural uranium, unirradiated depleted uranium or unirradiated natural thorium may be transported as an excepted package, provided that the outer surface of the uranium or thorium is enclosed in an inactive sheath made of metal or some other substantial material. ICAO 2-1.9 A... 

No. The norm NF EN 13432 is strictly restricted to packaging as defined by the European directive 94/62/CE. However, compliance can be obtained with NF EN 14995, a certified copy of NF EN 13432, but it is restricted to all materials except packaging. Failure to observe this regulation could lead to prosecution for false... 

If the total activity of an SCO is so low that the activity limits for excepted packages according to para. 408 are met, it can be transported as an excepted package, provided that all the applicable requirements and controls for transport of excepted packages (paras 515-519) are complied with. 

Articles manufactured from natural or depleted uranium are by definition LSA-I and hence would normally have to be transported in an Industrial package lype 1 (IP-1). However, provided the materials are contained in an inactive sheath made of metal or other substantial material they may be transported in excepted packages. The sheath is expected to prevent oxidation or abrasion, absorb all alpha radiation, reduce the beta radiation levels and reduce the potential risk of contamination. 

The requirement that the radiation level at the surface of an excepted package not exceed 5 p.Sv/h was established in order to ensure that sensitive photographic material will not be damaged and that any radiation dose to manbers of the public will be insignificant. 

By the same argument, special segregation of excepted packages fiom persons is not necessary. Any radiation dose to members of the public will be insigruficant even if such a package is carried in the passenger compartment of a vehicle. 

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). 

The basic activity limit for non-special form solid material which may be transported in an excepted package is 10 A2. This limit for an excepted package was... 

In the case of special form solid material, the probability of release of any dispersible radioactive material is very small. Thus, if radiotoxicity were the only hazard to be considered, much higher activity limits could be accepted for special form solid materials in excepted packages. However, the nature of special form does not provide any additional protection where external radiation is concerned. The limits for excepted packages containing special form material are therefore based on Aj rather than A2. The basic limit selected for special form solid material is 10 A j. This limits the external dose equivalent rate from unshielded special form material to one thousandth of the rate used to determine the Aj values. 

For gaseous material, the arguments are similar to those for solid material and the basic excepted package limits for gaseous material are therefore also 10 A2 for non-special form and 10 Aj for special form material. It is to be noted that in the case of elemental gases the package limits are extremely pessimistic because the derivation of already embodies an assumption of 100% dispersal (see Appendix I). 

In the case of liquids, an additional safety factor of 10 has been applied because it was considered that there is a greater probability of a spill occurring in an accident. The basic excepted package limit for liqnid material is therefore set at 1(H A2. 

Empty packagings which once contained radioactive material present little hazard provided that they are thoronghly cleaned to reduce the non-fixed contamination levels to the levels specified in para. 508 of the Regulations, have external surface radiation levels below 5 pSv/h (see para. 516) and are in good condition so that they may be securely resealed (see para. 520(a)) under these conditions the empty packaging may be transported as an excepted package. 

UN No. 2909 RADIOACTIVE MATERIAL, EXCEPTED PACKAGE — ARTICLES MANUEACTURED FROM NATURAL URANIUM or DEPLETED URANIUM or NATURAL THORIUM... 

UN No. 2909 RADIOACTIVE MATERIAL, EXCEPTED PACKAGE — ARTICLES MANUFACTURED FROM NATURAL URANIUM UN No. 2909 RADIOACTIVE MATERIAL, EXCEPTED PACKAGE — ARTICLES MANUFACTURED FROM DEPLETED URANIUM UN No. 2909 RADIOACTIVE MATERIAL, EXCEPTED PACKAGE — ARTICLES MANUFACTURED FROM NATURAL THORIUM... 

For movement by post, the allowed levels of activity are only one tenth of the levels allowed for excepted packages by other modes of transport, for the following reasons ... 

---