In-pile testing of ITER first wall mock-ups at relevant thermal loading conditions

  • Litunovsky N
  • Gervash A
  • Lorenzetto P
 et al. 
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Abstract

The paper describes the experimental technique and preliminary results of thermal fatigue testing of ITER first wall (FW) water-cooled mock-ups inside the core of the RBT-6 experimental fission reactor (RIAR, Dimitrovgrad, Russia). This experiment has provided simultaneous effect of neutron fluence and thermal cycling damages on the mock-ups. A PC-controlled high-temperature graphite ohmic heater was applied to provide cyclic thermal load onto the mock-ups surface. This experiment lasted for 309 effective irradiation days with a final damage level (CuCrZr) of 1 dpa in the mock-ups. About 3700 thermal cycles with a heat flux of 0.4-0.5 MW/m2onto the mock-ups were realized before the heater fails. Then, irradiation was continued in a non-cycling mode. © 2009 Elsevier B.V. All rights reserved.

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