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연구용 원자로의 정지봉 장치 성능에 미치는 인자 분석과 성능 시험

Performance test and factor analysis on the performance of shutoff units with the research reactor

  • 김경련 (충남대학교 기계공학과 대학원) ;
  • 김석범 (충남대학교 기계공학과 대학원) ;
  • 고재명 (충남대학교 기계공학과 대학원) ;
  • 문균영 (충남대학교 기계공학과 대학원) ;
  • 박종호 (충남대학교 기계공학과)
  • 발행 : 2007.04.01

초록

The shutoff unit was designed to provide rapid insertion of neutron absorbing material into the reactor core to shutdown the reactor quickly and also to withdraw the absorber slowly to avoid a log-rate trip. Four shutoff units were installed on the HANARO reactor but the half-core test facility was equipped with one shutoff unit. The reactor trip or shutdown is accomplished by four shutoff units by insertion of the shutoff rods. The shutoff rod(SOR) is actuated by a directly linked hydraulic cylinder on the reactor chimney, which is pressurized by a hydraulic pump. The rod is released to drop by gravity, when triplicate solenoid valves are de-energized to vent the cylinder. The hydraulic pump, pipe and air supply system are provided to be similar with the HANARO reactor. The shutoff rod drops for 647mm stroke within 1.13 seconds to shut down the reactor and it is slowly inserted to the full down position, 700mm, with a damping. We have conducted the drop test of the shutoff rod in order to show the performance and the structural integrity of operating system of the shutoff unit. The present paper deals with the 647mm drop time and the withdrawal time according to variation of the pool water temperature, the water level and the core flow.

키워드

참고문헌

  1. Kim, Kyoung. Rean., and Park, Yong. Chul., 2004, 'The flow measurement for the core channel in HANARO Flow Simulation Facility,' transactions of KNS autumn meeting, pp. 625-630
  2. Park, Yong. Chul., et. al. 2002, 'Technical Specification for Fabrication of Flow Circulation System in HANARO Flow Simulation Facility,' KAERI TR-2290
  3. Park, Yong. Chul., 2004, 'The Analysis for Flow Circulation System in HANARO Flow Simulation Facility,' KFMA, Vol. 7, No. 1, pp. 30-35
  4. Kim, Kyoung. Rean., and Cho, Yeong. Garp., 2005, 'An experimental study on the factors for the performance of a shutoff unit in the half-core test loop of HANARO,' transactions of KNS autumn meeting
  5. Park, Yong. Chul., et. al, 2002, 'Technical Specification for Fabrication of Support System in HANARO Flow Simulation Facility,' KAERI TR-2299
  6. Cho, Yeong. Garp., and Kim, Kyoung. Rean., 2005, 'Endurance test for the lifetime extension of the shutoff units in HANARO,' transactions of KNS autumn meeting
  7. Cho, Yeong. Garp., and Woo, Jong. Sup., 2005, 'Status of life extension program for HANARO shutoff units,' proceedings of KNS sprig meeting