원전 금속단열재의 구조 건전성 강화를 위한 설계 방안 = Design for Strengthening Structural Integrity of the Reflective Metal Insulation in the Nuclear Power Plant

다국어 초록 (Multilingual Abstract)

The goal of this paper is to investigate structural integrity factors of RMI(reflective metal insulation) to confirm the design requirements in nuclear power plant. Currently, a glass wool insulation is using now, but it will gradually be replaced with the reflective metal insulation maded by stainless steel plates. The main function of an insulation is to minimize a heat loss of vessel and pipes in RCS(reactor coolant system). It has to maintain structural a integrity in nuclear power plant life duration. In this study, the structural integrity analysis was carried out both multi-plate and outer shell plate by using a static analysis and experimental test. First, inner multi-plate has a self support structure for being air space. Because the effect of total static weight in multi-layer plate is low, a plate collapse possibility is not high. Considering optimum thin plate pressing process, it has to pre-check the basic physical properties. Second, the outer segment thickness and stiffener shape are verified by the numerical static analysis, and sample test for both type of panel and cylindrical pipe model.

참고문헌 (Reference)

1 ASTM E8/E8M, "Standard Test Methods for Tension Testing of Metallic Materials"

2 ASTM E517, "Standard Test Method for Plastic Strain Ratio r for Sheet Metal"

3 NISSHIN STEEL, "Quality Product of Stainless Steel Foil"

4 R. T. Bynum. Jr, "Insulation handbook" McGraw-Hill 2001

5 KEPCO E&C, "Design Specification for Reactor Vessel Insulation"

6 ANSYS, "ANSYS CFX Ver 14.5"

7 S. B. Kim, "A Study on the Insulation Design Parameters of the Reactor in the Korean Standard Nuclear Power Plant" 8 (8): 285-292, 1999