삽입 및 이동 가능한 연료봉 지지부의 지지격자 형상

국문 초록 (Abstract)

지지격자체는 경수로 핵연료집합체의 가장 중요한 핵심 구조부품이다. 지지격자체 설계시의 고려사항은 원자로 운전중에 연료봉의 지지건전성을 유지하도록 하는 것이다. 본 연구에서는 연료봉이 유동기인진동에 의해서 진동할 때 연료봉과 연료봉 지지부 사이에서 상대변위를 완화해 줌으로서 연료봉의 프레팅 마모손상 가능성을 감소시킬 수 있는 이동 가능한 연료봉 지지부로 구성된 새로운 지지격자체 형상을 제안하였다. 아울러 제안된 이동 가능 지지부의 연료봉 지지특성을 유한요소해석을 통해 분석하였다.

다국어 초록 (Multilingual Abstract)

A spacer grid assembly is one of the most important structural components of the nuclear fuel assembly of a Pressurized Water Reactor (PWR). A primary design requirement is that the fuel rod integrity be maintained by the spacer grid assembly during the operation of the reactor. In this study, we suggested a new spacer grid assembly having a fuel rod support, which is capable of sliding when the fuel rod vibrates due to flow-induced vibrations in the reactor. By adjusting the relative displacement between the fuel rod and its support, the proposed design will help in reducing fuel rod fretting damage.

목차 (Table of Contents)

• 초록
• Abstract
• 1. 서론
• 2. 통상적인 지지격자체 형상
• 3. 삽입형 지지부의 지지격자 형상
• 4. 결론
• 후기
• 참고문헌

참고문헌 (Reference)

1 이현아, "충격과 마모를 고려한 원자로 핵연료봉 지지격자의 설계" 대한기계학회 31 (31): 1000-1009, 2007

2 김도원, "등가하중을 이용한 원자로 핵연료봉 지지격자 스프링의 비선형 응답 구조 최적설계" 대한기계학회 31 (31): 1165-1172, 2007

3 송기남, "공리적 설계를 이용한 원자로 핵연료봉 지지격자체의 설계" 대한기계학회 26 (26): 20-1630, 2002

4 Song, K. N, "Suggestion Spacer Grid Assembly With Sliding Fuel Rod Supports" 2009

5 Yoon, K. H, "Spacer Grid for Nuclear Reactor Fuel Assemblies with Grid Springs Maintaining Conformal Contact with Fuel Rods andEnlaeged Elastic Range" 707-872 B2, 2004

6 Claude Feutrel, "Space Grate For Fuel Elements of Nuclear Reactors" 4 : 396-573, 1980

7 Yoon, K. H, "Shape Optimization of the H-Shape Spacer Grid Spring Structure" 33 (33): 547-555, 2001

8 Song, K. N, "Performance Evaluation of Spacer Grid Shapes Native to Korea for PWR Fuels" 2 (2): 39-44, 2006

9 이수범, "Parameter study for a dimple location in a space grid under the critical impact load" 대한기계학회 22 (22): 2024-2029, 2008

10 Song, K. N, "PERFORMANCE EVALUATION OF NEW SPACER GRID SHAPES FOR PWRS" 한국원자력학회 39 (39): 737-746, 2007

11 Shin, M. K, "Optimization of a Nuclear Fuel Spacer Grid Spring Using Homology Constraints" 238 : 2624-2634, 2008

12 Lynne E. Weiland, "Nuclear Reactor Spacer Grid" 4 : 702-881, 1987

13 Edmund E. DeMario, "Nuclear Fuel Grid Spring and Dimple Structures" 4 : 803-, 1987

14 John F. Patterson, "Mixing grid" 4 : 726-926, 1987

15 Song, K. N, "Mechanical/Structural Tests of Robust Spacer Grid Shapes for PWR Fuels" 1 (1): 99-105, 2005

16 Song, K. N, "Laser Welding Unit for Intersection Line Welding of Spacer Grid Inner Straps and Its Application" 4 (4): 11-17, 2009

17 Song, K. N, "Korea Patent Application 2009-0068839"

18 Song, K. N, "Korea Patent Application 2009-0068838"

19 Song, K. N, "Korea Patent Application 2009-0068836"

20 Song, K. N, "Korea Patent Application 2009-0067020"

21 Song, K. N, "Korea Patent Application 2009-0006230"

22 Song, K. N, "Korea Patent Application 2009-0006229"

23 Song, K. N, "Korea Patent Application 2009-0006228"

24 Kang, H. S, "Grid with Nozzle-Type Coolant Deflecting Channels for Use in Nuclear ReactorFuel Assemblies" 6 : 130-927, 1998

25 Peter P. King, "Grid Spacer and Method of Making Same" 5 : 139-736, 1986

26 William J. Bryan, "Fuel Rod Capturing Grid Spring and Arch" 5 : 243-635, 1992

27 William J. Bryan, "Fuel Assembly Support Grid" 5 : 139-736, 1991

28 Kunz, H. J, "Fuel Assembly Mechanical Design Manual" 1987

29 Song, K. N, "Determination of Optimum Welding Parameters for a Laser Welded Spacer Grid Assembly for PWRs" 2 (2): 95-99, 2007

30 Park, K. J, "Design of a Spacer Grid Using Axiomatic Design" 40 (40): 989-997, 2003

31 Lee, S. H, "Design Improvement of an OPT-H Type Nuclear Fuel Rod Support Grid by using an Axiomatic Design and an Optimization" 대한기계학회 21 (21): 1191-1195, 2007

32 Song, K. N, "Comparison of Wear Resistance for Various Spacer Grid Spring Shapes" 4 (4): 1-7, 2008

33 "ABAQUS/Standard Version 6.8 User's Manual"