• JOURNAL OF ELECTRICAL WORLD
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• s.323
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• pp.53-59
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• 2003

미국 일리노이주의 발전설비 기술기준 체계의 근간을 이루는 것은 ''보일러 및 압력용기안전법(Boiler and Pressure Vessel Safety Act)''(이하 ''법'')으로 일리노이주 의회의 표결이 의한 통과와 주지사의 재가에 의해 법률로 제정된다. State of Fire Marshal(이하 ''소방청'') Dvision of Boiler and Pressure Vessel Safety(이하 ''보일러 및 압력용기안전본부'') 그리고 Board of Boiler and Pressure Vessel Rules(보일러 및 압력용기법위원회)가 법의 제정, 대체 및 개정의 권한을 갖고 있다. 보일러 및 압력용기안전법은 1951년 제정되었으며, 법에서 규정한 예외사항을 제외한 보일러 및 압력용기의 건조$\cdot$설치$\cdot$수리$\cdot$유지$\cdot$교체$\cdot$사용$\cdot$운영에 대한 것을 규정하고 있다. 또한 ''보일러 및 압력용기법위원회''(이하 ''위원회'')를 설립하도록 하고 있다. 위원회는 법의 개정$\cdot$관리, 각종 수수료 책정 등 일리노이주의 보일러 및 압력용기에 대한 전반적인 사항을 관장한다. 보일러 및 압력용기안전법 2002년도 판의 내용을 기초로 하여 미국 일리노이주 발전설비 기술기준의 최근 체계에 대해 소개한다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2008.11a
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• pp.288-292
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• 2008

Dome shape design method of filament wound (FW) composite pressure vessel, which can create various dome shape with fixed boss opening, was suggested. And, the performance indices (PV/W) for composite pressure vessel with same boss opening but different dome shape were investigated by finite element analysis (FEA) and hydro-test. The FEA showed good agreement with test results for burst pressure. Generally, as the dome shape of pressure vessel was changed to flat dome, the inner volume is increased and the burst pressure is decreased. In the case of above ${\rho}_o$=0.54, the performance index showed decreased value due to the low burst pressure. However, at ${\rho}_o$=0.35, the dome shape change brings not significant reduction of burst pressure and performance index.

• Journal of the Korean Institute of Gas
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• v.7 no.3 s.20
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• pp.51-57
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• 2003

This paper presents the temperature distribution and deformation characteristics of O-ring groove geometry in which is strongly related the sealing performance of pressure vessels. A working gas in pressure vessel may be heated by a heater and pressurized by a gas compressor. Thus, the pressure vessel should keep high Pressure and temperature for a limited working period. For these operation conditions, the working gas in pressure vessels should not leak to the air by two O-rings with a rectangular groove. The FEM computed results indicate that the thermal and mechanical properties of metal sealing material is very important for stopping a leakage of hot gas in a vessel. Based on the results, high thermal conductive and low mechanical strength material is recommended as a metal sealing one. This may improve the sealing characteristics of O-ring sealing mechanism with a rectangular groove, which reduces the sealing gap between a flange and a cylinder and the width of O-ring groove.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2017.05a
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• pp.268-276
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• 2017

Developing a model was carried out to predict the characteristic of a pressure vessel from which the gas was vented through an orifice. An experimental test was conducted on a pressure vessel applicable to a propulsion system so that representative pressure and temperature were measured. Simulations were conducted with models using assumptions considering heat transfer inside the vessel, and the results were compared to those from the experiment. As a result, it was found out that a proposed heat transfer model was proper to predict pressure and temperature of the vented gas comparable to the measured data.

• Journal of Radiation Protection and Research
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• v.32 no.4
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• pp.168-177
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• 2007

A neural network model to evaluate the neutron exposure on the reactor pressure vessel inner diameter was developed. By using the three dimensional synthesis method described in Regulatory Guide 1.190, a simple linear equation to calculate the neutron spectrum on the reactor pressure vessel was constructed. This model can be used in a quick estimation of fast neutron flux which is the most important parameter in the assessment of embrittlement of reactor pressure vessel. This model also used in the selection of an optimum core loading pattern without the neutron transport calculation. The maximum relative error of this model was less than 3.4% compared to the transport calculation for the calculations from cycle 1 to cycle 23 of Kori unit 1.

• Transactions of the Korean Society of Pressure Vessels and Piping
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• v.4 no.2
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• pp.7-12
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• 2008

The purpose of this study is to present a methodology to estimate the capacity of the pressure relief valve which prevents overpressure of the pressure vessel in a cold state. In this methodology, the transient behavior of the flow rate through the pressure relief valve and the pressure inside the pressure vessel are considered. The result of this study shows the followings; The more the relief valve capacity is considered in excess, the more the initial relief flow rate and the initial pressure inside the pressure vessel are high and low respectively. When the relief valve capacity is determined properly, the pressure inside the pressure vessel maintains almost the same value, so the ASME code requirement will be met.

• Journal of the Korean Society for Nondestructive Testing
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• v.34 no.2
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• pp.135-140
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• 2014

Pressure vessels are used in various industrial fields. If a defect occurs on the inner or outer surface of a pressure vessel, it may cause a massive accident. A defect on the outer surface can be detected by visual inspection. However, a defect on the inner surface is generally impossible to detect with visual inspection. Nondestructive testing can be used to detect this type of defect. Laser speckle shearing interferometry is one nondestructive testing method that can optically detect a defect; its advantages include noncontact, full field, and real time inspection. This study evaluated the detectable size for an internal defect of a pressure vessel. The material of the pressure vessel was ASTM A53 Gr.B. The internal defect was detected when the pressure vessel was loaded by internal pressure controlled by a pneumatic system. The internal pressure was controlled from 0.2 MPa to 0.6 MPa in increments of 0.2 MPa. The results confirmed that an internal defect with a 25 % defect depth could be detected even at 0.2 MPa pressure variation.

• Plant Journal
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• v.8 no.1
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• pp.60-72
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• 2012

In this study to reduce the review time of the pressure vessel regulations pressure vessel legislation review program has been developed. During the course of this research program to develop the domestic construction in a real project, saving 47% of the time was found.

• Journal of the Korean Society of Propulsion Engineers
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• v.7 no.2
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• pp.36-43
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• 2003

The analytic solution of radial displacements of thin cylindrical pressure vessel with carbon fiber T700/Epoxy orthotropic composites was obtained using equilibrium equations of the orthogonal curvilinear coordinate system. The governing equations with the simplified strain versus displacement relation of 3-dimensional curvilinear coordinate system were derived from the variational principle and the virtual work principle. Some theoretical analyses were presented and compared with the results of hydraulic tests for the pressure vessels with some various thicknesses. The results of the theoretical analysis and the hydraulic test were reasonably matched.

• Explosives and Blasting
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• v.30 no.2
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• pp.43-51
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• 2012

The Demolition blasting has been applied for buildings and structures so far. In this study, however, a confined vessel blasting filled with water has been focused. A small amount of explosives were placed in a sealed vessel with water, perfect elastic body, supposed as a relay agent in it, and the blasting aspect was observed. Blasting pressure was standardized by Abel's equation of state. In result, if there was a relay agent in it, the pressure vessel was torn apart with smaller power than its tensile strength. If there was not, it needed 7.1~8.5 times as much power as the previous one, and the blasting pressure had not also affected the demolition and it had gone or vanished until it reached a certain point, In terms of pressure vessel made by steel, the elastic-plastic failure was took a place, and the first yield point happened along the welded area as a form of heating plastic failure we thought.