Sealed Source 4
Sealed Source 4 :
Radioactive material that is (a) permanently sealed in a capsule, or (b) closely bonded and in a solid form. The Joint Convention definition is identical, except that the words “excluding reactor fuel elements” are added. The BSS definition is as above11, but continues: “The capsule or material of a sealed source shall be strong enough to maintain leaktightness under the conditions of use and wear for which the source was designed, also under foreseeable mishaps.” The term special form radioactive material, used in the context of transport of radioactive materials, has essentially the same meaning. Disused sealed source: see Source: disused source
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