Transactions of the Korean Society of Pressure Vessels and Piping (한국압력기기공학회 논문집)

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Seismic Qualification Test for SSDM Hydraulic System of Research Reactor

연구용 원자로 이차정지구동장치 수력시스템의 내진검증

  • Received : 2016.04.28
  • Accepted : 2016.06.27
  • Published : 2016.06.30
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Abstract

The Second Shutdown Drive Mechanism (SSDM) provides an alternate and independent means of reactor shutdown. The Second Shutdown Rods (SSRs) of SSDMs are poised at the top of the core by the hydraulic force driven from a hydraulic system during normal operation. The rods drop by gravity when a trip is commended by a Reactor Protection System, Alternate Protection System, Automatic Seismic Trip System or operator by means of power off solenoid valves of hydraulic system. This paper describes the test results of seismic qualification of a prototype SSDM hydraulic system to demonstrate that its structural integrity and operability (functionality) are maintained during and after seismic excitations, that is, an adequacy of the SSDM design. From the results, this paper shows that the SSDM hydraulic system satisfies all its design requirements without any malfunctions during and after seismic excitations.

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References

  1. Kim, S., Cho, Y. G., Choi, M. H., Lee, J. H., Huh, H. and Kim J. I., 2012, "Reactor Shutdown Mechanism by Top-mounted Hydraulic System," Tans. of the KNS, Spring Meeting.
  2. Kim, S., Kim, K. H., Sun, J. O., Cho, Y. G., Jung, T. H., Kim, J. H. and Lee, K. H., 2015, "Seismic Qualification Test for SSDM Hydraulic System of Research Reactor," Trans. of the KPVP, Annual Meeting.
  3. US NRC Regulatory Guide 1.29, 2007, "Seismic Design Classification," Rev. 4. Nuclear Regulatory Commission.
  4. US NRC Regulatory Guide 1.100, 1988, "Seismic Qualification of Electric and Mechanical Equipment for Nuclear Power Plants," Rev. 2, Nuclear Regulatory Commission.
  5. NSSC Regulatory Guide KINS/RG-N03.02, 2011, "Seismic Qualification of Mechanical and Electric Equipment for Nuclear Power Plants," Nuclear Safety and Security Commission.
  6. IEEE 344, 1987, "Recommended Practice for Seismic Qualification of Class 1E Equipment for Nuclear Power Generating Stations," IEEE Power Engineering Society.
  7. KEPIC END 2000, 2005 through 2006 addenda, "Seismic Qualification of Class 1E Equipment," Korea Electric Association.
  8. IEEE 600, 1983, "Trial-Use Standard Requirements for Organizations that Conduct Qualification Testing Safety Systems Equipment for Use in Nuclear Power Generating Stations," IEEE Power Engineering Society.
  9. KEPIC END 1200, 2005, "Organizations that Conduct Qualification Testing Safety Systems Equipment," Korea Electric Association.
  10. ASME QME-1, 1997, "Qualification of Active Mechanical Equipment Used in Nuclear Power Plants," American Society of Mechanical Engineers.
  11. KEPIC MF, 2005 through 2006 addenda, "Qualification of Active Mechanical Equipment Used in Nuclear Power Plants," Korea Electric Association.
  12. IEEE 323, 2003, "Standard for Qualifying Class 1E Equipment for Nuclear Power Generating Stations," IEEE Power Engineering Society.
  13. KEPIC END 1100, 2005, "Qualifying Class 1E Equipment," Korea Electric Association.
  14. NSSC Regulation No.3, 2011, "Regulation on Standards of Nuclear Reactor Facilities," Nuclear Safety and Security Commission.
  15. IAEA Safety Requirements NS-R-4, 2005, "Safety Standards, Safety of Research Reactors," International Atomic Energy Agency.
  16. NSSC Regulation 2012-9, 2012, "Regulation on Safety Classification and Applicable Codes and Standards for Nuclear Reactor Facilities," Nuclear Safety and Security Commission.
  17. NSSC Notice 2012-17, 2012, "Regulation on Standards for Quality Assurance Requirements of Reactor Facilities," Nuclear Safety and Security Commission.
  18. ASME NQA-1, 1994, "Quality Assurance Requirements for Nuclear Facility Applications," American Society of Mechanical Engineers.
  19. KEPIC QAP, 2005, "Nuclear Quality Assurance Requirements," Korea Electric Association.