4th International Workshop on Accelerator Radiation Induced Activation (ARIA'17)

Session

Decommissioning

24 May 2017, 09:00

Gästmatsalen (Medicon Village)

Conveners

Decommissioning

• Daniela Kiselev (Paul Scherrer Institut)

41. Present status of accelerator decommissioning project in Japan

Prof. Kazuyoshi Masumoto (High Energy Accelerator Research Organization)

24/05/2017, 09:00

In Japan, the clearance system which contains (1) the clearance level of radioactive substances for release to the environment and (2) the control procedures of the nuclear regulation authority (NRA), has been introduced in the radioisotope handling facilities and accelerator facilities. In this regulation, the definition and the handling rules for activated materials were stated. Several...

42. Evaluation activity induced in various components of PET-cyclotron

Mr Takayuki Nakabayashi (Japan Environmental Research Co., Ltd.)

24/05/2017, 09:20

In case of the decommissioning of cyclotron facility, it is important to evaluate the induced activity of various components of cyclotron. In this work, two types of cyclotron such as proton acceleration using a deflector and H- acceleration using a carbon stripper foil for beam extraction to target port were selected. The former type was Cyclone10/5 of IBA and the latter type was BC-1710 of...

31. In-situ determination of residual specific activity in activated concrete walls of a PET-cyclotron room

Dr Hiroshi Matsumura (KEK)

24/05/2017, 09:40

A 12-MeV cyclotron used for production of radiopharmaceuticals for positron-emission tomography (PET) at the Medical and Pharmacological Research Center Foundation in Hakui, Ishikawa, Japan was decommissioned in March 2015. The decommissioning work began immediately, and the entire cyclotron body and its accessories were removed from the cyclotron room. Currently, a method for measuring the...