Bulletin 2/2010 - Siempelkamp NIS

Core removal from the reactor building: Dismantling begins 18 m above ground and ends 20 m below ground
Sawing of the dome segment with a concrete saw
Heavy-walled steel parts are cut with a band saw Decontamination using steel-grit blasting
for a targeted surface abrasion
SIEMPELKAMP | NUCLEAR TECHNOLOGY
After the dismantling of the plant components, the tasks necessary
for the release of the building structures began.
For this last and important phase which resulted in the release of
the building and plant premises, the NIS engineers developed a
concept for the internal clearance measurements and coordinated
the approach with the authority and surveyors.
The radiation measurements necessary for the clearance of the
building and premises were carried out between 2007 and the
beginning of 2010. At the same time an authorized expert
assigned by the nuclear regulatory authority carried out control
measurements.