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VACUUM ›› 2021, Vol. 58 ›› Issue (6): 8-12.doi: 10.13385/j.cnki.vacuum.2021.06.02

• Measurement and Control • Previous Articles     Next Articles

Feasibility Study on High Temperature Helium Detection of the TVS-2M Fuel Rod Without Anodic Oxidation

HUANG Fan, YANG Tong-gao, GUO Chun-hai, CAO Hui, CHEN Chao   

  1. CNNC Jianzhong Nuclear Fuel Co., Ltd., Yibin 644000, China
  • Received:2020-12-14 Online:2021-11-25 Published:2021-11-30

Abstract: The TVS-2M high burnup nuclear fuel rods should be dried at high temperature and then vacuum helium leak detection should be conducted. The original technology requires anodic oxidation process, which has disadvantages of high cost and high transportation risk. Therefore, the feasibility of removing the anodic oxidation process is explored. The effect of canceling anode oxidation and the feasibility of helium leak detection at high temperature were analyzed. The design scheme of drying and leak detection equipment was determined, and the process flow was formulated. The system detection feasibility and simulation experiment were verified. The results show that the new high temperature helium leak detection equipment with heating and leak detection functions can meet the tightness test of the TVS-2M fuel rod without affecting the quality of fuel rod. It is verified that the helium leakage detection output value of TVS-2M fuel rod can be kept true and reliable without anodic oxidation, reflecting whether there is leakage point.

Key words: TVS-2M fuel rod, high temperature, helium leak detection, anodic oxidation

CLC Number: 

  • TL2
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