COM 0212.422 1996-1998 - Laserfiche WebLink

Home

FEH 3'97 16:38 FR NORDION INTERNRTIONAL 13 592 0440 TO 12016871476 Pail./19 LOX Cobalt-60, are extracted from the reactor into a shielded flask and transferred into a 10 metre deep, water filled storage bay where they are transferred into an approved shipping ceauiner. Naxc, they are transported co the Cobalt Processing Facility, where the bundles are dismantled and the Zircalloy inner capsules are further sealed in stainless steel "Outer Capsules". Tha fiaishad-product is most often the ~C-188 Cobalt-60 source pencil (Figure 1). This capsule has become a world-vide industry standard. Gapsulas era manufactured co a vary strict quality assurance program chat includes verification of incoming materials and chemical analysis of ma carial samples. They' are automatically welded in an argon atmosphere using non-consumable cungstea electrodes. In every production run, destructive casting is done on the fuse and last and one intecmadiace capsule or at least one in every twenty-five. To improve corrosion zesiscance, the outer capsules era made from ASTM 316 L stainless steel which, due co ies low carbon coneenc, parmiu welding with minimum carbide precipitation. SkIPHEN'I OF COBALT-60 SOURCES Cobalt-60 has to be shipped: 1. From the Reactor eo the Processing Facility 2. From the Processing Facility co the customer, and 3. From the customer to the Processing Facility afeer its useful life. ,phi of a Container Desi¢n All Nordion shipping containers are designed to mast Typa B(U) requirements of cha IAFA Regulation for Safe Transport of Radioaeeive Materials, Safety Series 6 (1985). Packages ors generally categorized as "Type A" for small, often hand carried packages containing small amounts of radioactive materials and "Type B" for more substantial quantities of radioactive materials under regular and :ovate shipping conditions. An exempla of a Type A package would be a small lead pot in a cardboard box, light nnough co ba carried by hand. Examples of lype B packages will be discussed in the following paragraphs. As with mny other products, a designer of a shipping container must successfully bleed together a variety of often conflicting requirements- Aspects that must Da considered vary from currant and anticipated regulatory requirements and operating characteristics to compatibility with existing facilities and costs. Rslk Produec Shivoine Container a cypicaL bulk shipping eoataiaer designed to eransport Cobalt-60 from the Reactor Site w t2u Processing Facility is shown oa Ffgure 2. This container, known as the F-231, conforms co IA&? Type B(U) :pacification and carries Canadian Atomic Eaargy Control Board Certification No. CDN/2047/B(U). AECB is an independent governmsat regulatory and . 2 -