A study on pseudo interface wave technique for CRDM weld defects in nuclear power plants
- Graduate school, School of Mechanical Engineering, Pusan National University, Pusan (Korea, Republic of)
- School of Mechanical Engineering, Pusan National University, Pusan (Korea, Republic of)
- Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)
The nuclear power plant inspection is very important for the safety issue. However due to some radiation and geometric problems, the detection of CRDM(Control Rod Drive Mechanism) can be very difficult by using conventional Ultrasonic Testing method. Also the shrink fit boundary condition can also be an obstacle for the inspection in this paper, instead of conventional Ultrasonic Testing, guided wave was used for the detection of some complicated structures. The CRDM nozzle was installed in reactor head with perfect shrink fit condition by using stainless steel. The wave amplitude distribution on the circumferential direction was calculated with various boundary conditions and the experimental result shows a possibility of the defect detection on J-groove weld.
- OSTI ID:
- 22391208
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1650; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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