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Development of Sealing Technology for Instrumentation Feedthrough of High Pressure Vessel  

Jeong, H.Y. (한국원자력연구원 하나로운영부)
Hong, J.T. (한국원자력연구원 하나로운영부)
Ahn, S.H. (한국원자력연구원 하나로운영부)
Joung, C.Y. (한국원자력연구원 하나로운영부)
Lee, J.M. (한국원자력연구원 연구로공학부)
Lee, C.Y. (한국원자력연구원 하나로운영부)
Publication Information
Journal of the Korean Society of Mechanical Technology / v.13, no.2, 2011 , pp. 137-143 More about this Journal
Abstract
Fuel Test Loop(FTL) is a facility which could conduct a fuel irradiation test at HANARO(High-flux Advanced Neutron Application Reactor). FTL simulates commercial NPP's operating conditions such as the pressure, temperature and neutron flux levels to conduct the irradiation and thermo-hydraulic tests. The In-Pile Test Section(IPS) installed in HANARO FTL is designed as a pressure vessel design conditions of $350^{\circ}C$, 17.5MPa. The instrumentation MI-cables for thermocouples, SPND and LVDT are passed through the sealing plug, which is in the pressure boundary region and is a part of instrumentation feedthrough of MI-cable. In this study, the brazing method and performance test results are introduced to the sealing plug with BNi-2 filler metal, which is selected with consideration of the compatibility for the coolant. The performance was verified through the insulation resistance test, hydrostatic test, and helium leak test.
Keywords
Fuel Test Loop; Sealing; MI cable; Brazing;
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  • Reference
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