Feasibility Study on Ultrasonic Waveguide Sensor for Under-Sodium Viewing of Reactor Internals in Sodium-Cooled Fast Reactor

소듐냉각고속로 원자로 내부구조물의 소듐내부가시화를 위한 웨이브가이드 초음파센서의 적용 가능성 연구

  • 주영상 (한국원자력연구원 고속로기술개발부 기계핵심기반기술개발) ;
  • 임사회 (한국원자력연구원 고속로기술개발부 기계핵심기반기술개발) ;
  • 박창규 (한국원자력연구원 고속로기술개발부 기계핵심기반기술개발) ;
  • 이재한 (한국원자력연구원 고속로기술개발부 기계핵심기반기술개발)
  • Published : 2008.08.30

Abstract

Ultrasonic waveguide sensor has been developed for under-sodium viewing of reactor internal structures of a sodium-cooled fast reactor (SFR). The structure design concept of a waveguide sensor assembly was suggested and evaluated for the application in SFR. A 10 m long ultrasonic waveguide sensor assembly has been manufactured and the experimental feasibility tests were carried out. The 10 m long distance propagation performance of zero-order antisymmetric $A_0$ Lamb wave has been verified. The feasibility of ultrasonic waveguide sensor has been demonstrated by the C-scanning resolution performance test.

소듐냉각고속로 원자로 내부구조물의 소듐내부가시화를 위한 새로운 웨이브가이드 초음파센서를 개발하였다. 소듐냉각고속로에 적용할 수 있는 웨이브가이드 초음파센서 어셈블리의 구조 설계 개념을 제시하고 그 적용 타당성을 평가하였다. 길이가 10 m인 웨이브가이드 초음파센서 어셈블리를 제작하고 성능평가 시험을 수행하였다. $A_0$ 모드 판파의 장거리 전파 성능을 확인하였으며, 수중 C-스캔 분해능 성능시험을 수행하여 웨이브가이드 초음파센서의 적용 가능성을 실험적으로 검증하였다.

Keywords

References

  1. D. Hahn, et al., KALIMER-600 Conceptual Design Report, KAERI/TR-3381/2007, p. 363, (2007)
  2. American Society of Mechanical Engineers, 'Rules for in-service inspection of nuclear power plant component,' ASME Boiler and Pressure Vessel Code, Section XI, Division 3, ASME, New York, (1992)
  3. G. Seed, 'In-service inspection and monitoring of CDFR,' Nucl. Energy, Vol. 25, No. 2, pp. 129-135, (1986)
  4. N. Lions, et al., 'Utilization and performance of sodium instrumentation during sart-up and initial operation of phenix,' Int. Conf. on Liquid Metal Technology in Energy Production, pp. 755-761, (1980)
  5. J. A. McKnight and P. Fenemore, 'Under-sodium ultrasonic technology for LMFBRs,' Science and Technology for Fast Reactor Safety, BNES, London, pp. 585-590, (1986)
  6. N. Lions, et al., 'Apparatus for ultrasonic visualization in sodium (VISUS) and acoustic detection in the phenix reactor,' ORNL-TR- 4136, (1973)
  7. J. P. Argous, et al., 'Immersed acoustical transducers and their potential uses in LMFBR,' Int. Conf. on Liquid Metal Technology in Energy Production, CEA-CONF 5257, (1980)
  8. J. A. McKnight, et al., 'Recent advanced in the technology of under-sodium inspection in LMFBRs,' Liquid Metal Engineering and Technology, Vol. 1, pp. 423-430, ,BNES, London, England, (1984)
  9. T. Susuki, et al., 'Development of FBR visual inspection technique in sodium,' Proceedings of ICONE 3, S212-2, pp. 905-910, (1995)
  10. R D. Watkins, et al., 'A proposed method for generating and receiving narrow beams of ultrasound in the fast reactor liquid sodium environment,' Ultrasonics, Vol. 20, No. 1, pp. 7-12, (1982) https://doi.org/10.1016/0041-624X(82)90057-9
  11. D. Watkins, L. M. Barrett and J. A. McKnight, 'Ultrasonic waveguide for use of the sodium coolant of fast reactors,' Nucl. Energy, Vol. 27, No. 2, pp. 85-89, (1988)
  12. Y. S. Joo and J. H. Lee, 'Development of ultrasonic waveguide sensor for under-sodium viewing in liquid metal reactor,' J. of Korean Society for Nondestructive Testing, Vol. 26, No. 1, pp. 18-24, (2006)
  13. Y. S. Joo and J. H. Lee, 'Beam steering technique of ultrasonic waveguide sensor for under-sodium inspection of sodium fast reactor', 13th International Conference on Nuclear Engineering, ICONE 13-50340, (2005)
  14. J. L. Rose, Ultrasonic Waves in Solid Media, Cambridge University Press, New York, (1999)