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VACUUM ›› 2021, Vol. 58 ›› Issue (5): 89-92.doi: 10.13385/j.cnki.vacuum.2021.05.16

• Measurement and Control • Previous Articles     Next Articles

Influence of Paper Barcode on Helium Leak Detection Output of the Fuel Rod and Solution

HUANG Fan, LI Bin, LIU Yi-qun, CAO Hui   

  1. CNNC Jianzhong Nuclear Fuel Co. , Ltd, Yibin 644000, China
  • Received:2020-11-07 Online:2021-09-25 Published:2021-09-23

Abstract: The influence of output value of fuel rod with paper barcode in helium leak detection process was explored. The fuel rods with laser bar code and paper bar code were selected as the control group and the experimental group, respectively. By analyzing the leakage rate output value, it was determined that the paper barcode had influence on the helium leakage detection output value of fuel rods. Based on experiment and analysis, the method to eliminate the false display caused by paper barcode is found. The following conclusions are drawn: the helium leak detection output value of fuel rod with paper barcode is high, close to the waste value; the main reason of helium leakage detection output value of the fuel rod is caused by paper barcode deflation and gas escape; by prolonging the evacuation time, the paper barcode has almost little influence on the helium leak detection output value of fuel rod, and does not cause misjudgment.

Key words: paper barcode, the fuel rod, hydrogen leak detection, outgassing rate

CLC Number: 

  • TB774
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