DIN 25413-2:2013-04

The proportions of elements for concretes provided in this document apply for design calculations for concrete shields having a large radiation attenuation factor in nuclear power stations, at hot cells and at other sources of intensive gamma radiation. When using this document for design calculations with lower radiation attenuation factors it shall be considered that the indicated mean distributions of proportions of elements for the different concretes are only ensured for concrete shields with a high attenuation factor. Therefore, it is recommended in these cases to determine and evaluate the attenuation factors for the indicated extreme values of the proportions of elements. The heat release caused by the gamma radiation in the shielding is not covered in this document. The committee responsible for this standard is NA 062-07-34 AA "Abschirmungen" ("Shielding") at DIN.