[en] Automatic translation: Calculation of the fission product deposit On the basis of the experimentally determined results were Investigations into the deposition behavior of cleavage and Activation products in the primary circuit of an HHT-3000 system carried out. Particular emphasis was placed on determining the radiation level to be expected in the turbine and placed after decontamination. The calculations show that even with the assumption of optimistic boundary conditions None when using chemical decontamination alone Sufficiently low dose levels for maintenance and repair work in the turbine area can be expected. This fact is made possible by the use of TZM as the blade material hardened, since with this material the existence of a protective oxide layer can apparently be ruled out.