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Lubmin (dpa / mv) - A reportable event has occurred in the North nuclear interim storage facility in Lubmin near Greifswald.
According to the Energiewerke Nord (EWN), the operator of the interim storage facility, five Castor containers with nuclear waste were slightly exceeded in the so-called block size.
The block size is a measure of the strength of the compression between the container and the lid, the EWN announced on Monday.
"The tolerance of the block size of the lid has no influence on the tightness and thus on the safety of the castor containers", it said.
The tightness of the containers is given without restriction.
A release of radioactive substances can be safely ruled out.
The exceedance of the tolerance was discovered during a check of the documents of all containers stored in the interim storage facility north.
"The verification at the EWN was carried out because, as part of a documentation review of Castor containers in Philippsburg, it became known that the documentation of the block size on the lids of the Castor containers had resulted in an error in the transfer of data in forms," the company explained .
It admitted: "At EWN, errors occurred in the context of container handling from 1999 to 2006 when data was transferred from the manufacturer's documentation to forms."
The EWN reported the deviation to the Ministry of the Interior as a "reportable event of the lowest category N", as the Ministry announced in Schwerin.
According to EWN information, this is a level 0 event on the eight-level INES reporting scale, which means something like "no or very little safety-related importance".
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The Ministry of the Interior, as the regulatory authority under nuclear law, announced that it would examine with its experts whether documentation obligations were violated and what consequences this might have.
"It has already been established that radioactive rays have never escaped and that this will not be the case in the future either," it said.
Press release EWN
Press release Ministry of the Interior