原子力発電所の解体の可能性

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  • Possibility of Dismantling a Nuclear Power Station
  • ゲンシリョク ハツデンショ ノ カイタイ ノ カノウセイ シリョウ

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The Japan Power Demonstration Reactor (JPDR) of the Japan Atomic Energy Research lnstitute has been modified to double the thermal output.<BR>During the modification, several high radiation operations were performed. A section of the biological shield concrete was removed to lay down a canal between the reactor pool and the fuel storage pool, and concrete had to be removed close to the flange of the pressure vessel. Portions of the core internals, such as the control brade and poison curtains, had to be removed and disposed of into the groveyard, and to do this an electro discharge machine was employed.<BR>By analyzing radiation levels, contamination and exposed doses during these operations, the dismantling of a nuclear powerstation was considered feasible.

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