Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2013, Vol. 24 ›› Issue (6): 060602 doi: 10.13538/j.1001-8042/nst.2013.06.014

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles    

Design of the material performance test apparatus for high temperature gas-cooled reactor

REN Cheng YANG Xing Tuan LI Cong Xin LIU Zhi Yong JIANG Sheng Yao*   

  1. Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 102201, China
  • Contact: JIANG Sheng Yao E-mail:jiangshy107@sina.com
  • Supported by:

    Supported by the National S&T Major Project of China(No.ZX06901) and the National Natural Science Foundation of China(No 11072131).

REN Cheng, YANG Xing Tuan, LI Cong Xin, LIU Zhi Yong, JIANG Sheng Yao. Design of the material performance test apparatus for high temperature gas-cooled reactor.Nuclear Science and Techniques, 2013, 24(6): 060602     doi: 10.13538/j.1001-8042/nst.2013.06.014

Abstract:

Most materials can be easily corroded or ineffective in carbonaceous atmospheres at high temperatures in the reactor core of the high temperature gas-cooled reactor (HTGR). To solve the problem, a material performance test apparatus was built to provide reliable materials and technical support for relevant experiments of the HTGR. The apparatus uses a center high-purity graphite heater and surrounding thermal insulating layers made of carbon fiber felt to form a strong carbon reducing atmosphere inside the apparatus. Specially designed tungsten rhenium thermocouples which can endure high temperatures in carbonaceous atmospheres are used to control the temperature field. A typical experimental process was analyzed in the paper, which lasted 76 hours including seven stages. Experimental results showed the test apparatus could completely simulate the carbon reduction atmosphere and high temperature environment the same as that confronted in the real reactor and the performance of screened materials had been successfully tested and verified. Test temperature in the apparatus could be elevated up to 1600ºC, which covered the whole temperature range of the normal operation and accident condition of HTGR and could fully meet the test requirements of materials used in the reactor.

Key words: Material performance test, High temperature gas-cooled reactor, Carbon reduction atmosphere