監視試験片再生接合技術の実機適用性評価
概要
In the application for approval of nuclear power plant operation period extension, it is required to carry out two surveillance tests separately from the conventional plan. At this time, it is necessary to compensate for the surveillance test piece by reconstitution bonding of the used test specimen, since the shortage of the test specimen is expected. Although the used test piece of the welded part is used for the reconstitution bonding of the heat affected zone (HAZ) test piece, the test piece collection position defined in JEAC4201 is different in both sample. Therefore, we comprehended the sampling position dependency of the impact characteristics in the HAZ, and evaluated the applicability of the reconstitution bonding to the actual plant.
