原子力施設の廃止措置費用評価手法の検討

Study on cost evaluation methods for decommissioning of nuclear facilities

白石 邦生; 立花 光夫; 石神 努; 富居 博行

Shiraishi, Kunio; Tachibana, Mitsuo; Ishigami, Tsutomu; Tomii, Hiroyuki

各種原子力施設の特徴を整理し、廃止措置費用の概略を短時間で効率的に計算できる評価手法を作成した。本評価手法は、費用評価項目ごとに原子力施設の機器・構造物の重量等に応じた換算係数を用いて廃止措置費用を評価する。評価に必要な換算係数は、旧日本原子力研究所(以下「原研」という)で実施したJPDR等の解体実績及び旧核燃料サイクル開発機構(以下「JNC」という)の再処理工場等で実施した改造工事等の経験をもとに作成した。本報告では、各種原子力施設の廃止措置計画を合理的に進めるために原研とJNCの統合前に作成した原子力施設の廃止措置費用評価手法について換算係数の見直しを行い、新たな廃止措置費用評価手法として整備した。

The method for evaluating efficiently decommissioning cost in a short time was made based on the features of various types of nuclear facilities where the feature of nuclear facilities was arranged. The evaluation method can calculate decommissioning cost using conversion factors corresponding to weight of components and structures of nuclear facilities, etc. The conversion factors were made based on the experience of the JPDR decommissioning projects in the Japan Atomic Energy Research Institute (JAERI) and of improvements of the reprocessing plant of the Japan Nuclear Cycle Development Institute (JNC). In this report, the decommissioning cost evaluation method of nuclear facilities that had been made before unification of JAERI and JNC was revaluated as a new decommissioning cost evaluation method to reasonably advance decommissioning plans of various nuclear facilities.