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원자로 용기 외벽 냉각을 통한 차세대 원전 관통부의 건전성 평가를 위한 지속 가열 실험 연구
강경호(K. H. Kang),박래준(R. J. Park),민병태(B. T. Min),김상백(S. B. Kim),이기영(K. Y. Lee),박종균(J. K. Park) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
Under the same induction heating power histories, two tests named as KNGR-SUS-DRY and KNGR-SUS-EXT<br/> were performed varying the cooling conditions at the outer surface of the lower head vessel. The maximum heat flux<br/> imposed to the inner surface of the lower head vessel was about 0.35 MW/m2 in both the tests. In the KNGR-SUS-DRY<br/> test performed without the external vessel cooling, the inner surface of the lower head vessel was ablated by the<br/> thickness of 45 mm, which indicated the total ablation of the welding material. Although the welding material was<br/> ablated in all, the penetration tube was not ejected outside the lower head vessel due to the thermal expansion of the<br/> lower head vessel and the penetration tube. In the KNGR-SUS-EXT test performed with the external vessel cooling,<br/> however, the thickness of the ablation is about 10 mm at most.
주인철(I.C. Chu),정흥준(H.J. Chung),박원만(W.M. Park),송철화(C.-H. Song),박종균(J.K. Park) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
The present paper provides experimental results obtained in the full-scale tests for the performance<br/> evaluation of the passive flow controlling device, called Fluidic Device, which is expected to be adopted in a<br/> Korean next generation reactor (APR1400). The tests have been carried out using the full-scale test facility<br/> called VAPER(Valve Performance Evaluation test Rig). Based on the full-scale performance test results for<br/> various fluidic device designs, the best design of the fluidic device is chosen to satisfy the primary<br/> performance requirements of the APR1400 plant design in view of the discharge flow rate characteristics,<br/> discharge flow switching function, duration of discharge flow, and water level depression in the stand pipe.