DE8018595U1 - CONNECTING ELEMENT FOR FASTENING THE INTERNAL LINING IN A BASE BODY FOR TRANSPORT AND / OR STORING RADIOACTIVE MATERIAL - Google Patents

Description

Ii ι "

KT 80 202

TRANSNUKLEAR GMBH 6 ^ 5 0 Hanau 11

TRANSPORT AND / OR STORAGE CONTAINERS FOR RADIOACTIVES

FABRICS

The object of the innovation is a connecting element for fastening the inner lining in a container body for Transport and / or storage of radioactive material, in particular irradiated fuel assemblies from nuclear reactors.

Containers that are used for the transport and / or storage of radioactive substances, in particular also of spent fuel assemblies must contain the radioactivity of the material brought in safely and prove in strict tests that this is guaranteed even in extreme accident situations. Simultaneously but they also have to shield the gamma and neutron rays released during the radioactive decay reactions and dissipate the heat of decay to the outside.

Known containers therefore consist of thick-walled metallic container bodies that have the necessary strength and the Ensure radiation shielding, as well as an inner lining, which ensures corrosion protection and decontaminability. Mainly for reasons of handling, testing and storage, the inner linings are preferred as removable inner containers educated. These inner containers are either fixed to the container body by hold-down devices or else in the lid area Screws fastened.

Both solutions are complex. For example, when fastening with screws, two rows of threaded holes are required, whereby the one holds the inner lining and the other establishes the connection between the lid and the container body. Disadvantage is besides This complex handling continues that the inner lining is broken through the threaded holes for the cover and screw thus the basic container body is exposed to the corrosive attack. The space requirement in this screw system is also disadvantageous large.

It was therefore the task of the innovation, a connecting element for fastening the inner lining in a container base body for Transport and / or storage of radioactive material, in particular of irradiated fuel assemblies from nuclear reactors create, which is easy to handle, the corrosion attack on |

minimizes the basic container body, and only takes up little space | may has. Ϊ

The object was achieved according to the invention in that the interior | clothing via an inner liner flange with the external thread |

is fastened by threaded inserts in the container body, where Sj

9 the threaded inserts have axial bores with an internal thread [

have in which screws for fastening a cover inserted j

are screwed. \.

The illustration shows a connecting element according to the invention. matically and in an exemplary embodiment for more detailed explanation | tion shown. j

The inner lining (1) rests on the container base body (2), with the inner lining flange (8) is provided with holes through the threaded inserts (A) with external thread (3) on the container body (2) are screwed on. The one with sealing elements (11)

The cover (5) of the inner lining (1) shown is held in place with screws (6) which sit in axial bores with internal threads (7) within the threaded inserts (k).

Thus, according to the innovation, it is possible to fasten the inner lining (i) with the flange (8) and cover (5) independently of one another, but in a space-saving and corrosion-proof manner. It is within the scope of the innovation that all parts of the connecting element, in particular the threaded inserts (4) _(are made of corrosion-resistant material.

If, based on the design data of a transport container, the cover (5) is to be fastened with e.g. 2k screws (6) M 32, an external thread (3) of M 1 »8 is sufficient for the threaded inserts {k) to ensure the necessary power transmission. This ensures that when removing the cover screws (6) the I

Thread inserts (h) remain firmly in place without unscrewing. The head (9) of the threaded insert (A) is designed accordingly for convenient handling. A seal (10) on the threaded insert (4) prevents the ingress of water during underwater loading.

Claims (1)

ti * * β a «β β β ι «tt KT 80 202 ^ TRANSNUKLEAR GMBH 6 * »50 Hanau 1 1 Claim to protection Connecting element for fastening the inner lining in a basic container body for the transport and / or storage of radioactive material, in particular irradiated fuel assemblies from nuclear reactors, characterized in that the inner lining (l) has an inner lining flange (8) with the external thread (3) of Threaded inserts (k) is fastened in the container base body (2), the threaded inserts (k) having axial bores with an internal thread (7) into which screws (6) for fastening a lid (5) are screwed.