Sample Cave Shielding for the Spectrometer SKADI at the ESS

The award procedure relates to the shielding concept, design, manufacturing and installation of the sample cave shielding for the neutron scattering instrument SKADI that will be built on beam port E3 in the east hall of ESS in Lund (Sweden). The sample cave shielding protects the environment from radioactive neutron and gamma radiation. The order and thickness of the shielding elements has to reduce a maximum dose rate to 1,5 μSv/h at the exterior contact. The shielding walls should be constructed of 600 mm thick normal concrete with carbon steel rebar, the inner side of the concrete walls and top should be lined with the 50 mm thick steel plates and borepoxy plates. The access to the sample area is provided through the motorised side and roof doors.