Seal welding treatment method for damaged spent fuel assembly

• Main Authors: AN RAN, WU SHUIJIN, YANG KONGLI, WANG MINGZHENG, GONG JINLONG, YU TUANJIE, QIAN BO, WANG CHANGLING
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2022
• Subjects: DECONTAMINATION ARRANGEMENTS THEREFOR; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; PHYSICS; PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL

The invention relates to a seal welding treatment method for a damaged spent fuel assembly. By adopting the method provided by the invention, the problems of sealing, storage and subsequent decommissioning and outward transportation of the damaged spent fuel assembly can be effectively solved; by designing special equipment such as an inclined conveyor, a pool manipulator, a transfer crane, a sealing tank operating device, a thin-walled cylinder operating device, a transfer gripper and a manipulator, remote transfer of objects such as a damaged component sealing tank, a damaged component and a thin-walled cylinder is realized; sealing welding, transferring and storing of the damaged spent fuel assembly can be completely treated in a remote operation mode, and therefore operators can be effectively prevented from being irradiated by rays. Meanwhile, the problem that fission gas released by the damaged assembly and other radioactive substances pollute the environment in the transfer process can be solved, and f