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황해룡,김교운,김종경 대한방사선 방어학회 1994 방사선방어학회지 Vol.19 No.1
CANDU형 원자력 발전소에서의 유도방출한도를 계산하기 위한 전산 코드 DRL이 개발되었다. DRL 코드에서의 유도방출한도는 CANDU형 원자력 발전소가 정상 가동될 때의 기체 및 액체 방출물에 포함된 방사성 핵종의 방출 허용 기준을 설정하기 위한 것이다. 본 전산 코드는 CSA Standard N288.1-M87에서 권고하고 있는 방법 및 다수 매개 변수를 이용하였고, 월성 원자력 발전소를 대상으로 유도방출한도를 결정하는데 이용되었다. A computer code DRL was developed to calculate the derived release limits at CANDU type muclear power plants. The derived release limits resulting from DRL code is to setguidelines for the release of radionuclides in airborne and water-borne effuents during normal operations of a CANDU type nuclear power plant. The DRL code generally follows the methodology prescribed in the CSA standard N288.1-M87 and uses the parameter values recommended in the same standards. The DRL code was used to calculate a set of preliminary derived release limits for the Wolsong NPP.
예술과의 연계에 의한 조경설계기법에 관한 역사적 고찰 : 회화를 중심으로 Lanscape Architecture, Art, and Paintings
서주환,이경진,김교윤 경희대학교 부설 디자인연구원 1999 예술· 디자인학연구 Vol.2 No.1
The modern cities are filled with the art and design. However, a lot of abandoned space would bring the design concept of cities to shame in the shade when we observe deeply the modern cities. Even though the design quality has been affected by the basic ability and knowledge of designer, the design methodology can improve the ability and quality of design. This study is concentrated on the connection of landscape architecture and other art fields for improving "the design quality". Especially, the unlimited applicable possibility of art is considered for the landscape architecture by focusing on the artistic pictures in this article. The fine art has affected directly and indirectly the landscape architecture activities. The meaning and symbolism for a piece of picture can express a city park as a small canvas in the modern mega-city. The picturesque concept of park design can give the possibility of not functional module but individually creativeness to the rest space of cities. Even though the most important element of design is the creativeness or originality, this element can have the limitation by the practical purpose in the real world. Therefore, the depth of design research can be deepen by the harder work through the basic functions and accurate studies.
Kim, Kyo-Youn,Ha, Chung-Woo,I.C. Gauld Korean Nuclear Society 1989 Nuclear Engineering and Technology Vol.21 No.2
연구용 원자로 MAPLE-X10 시설의 안전성을 평가하기 위하여 원자로 pool 및 보조 pool로부터 물의 상실이 가정되었을 때 시설에 대한 감마 방사선장을 해석하였다. 차폐 해석에 고려된 4개의 photon 선원항은 ORIGEN-S코드를 이용하여 계산하였다. 또한, pool물 상실 사고 조건하에서 원자로 pool 및 보조 pool에서의 감마 선량율은 QAD-CG코드를, 그리고 pool외부의 방사선장은 입체각 외부에서의 산란 photon 선량율 계산에도 적합한 MCNP 코드를 이용하여 평가하였다. An analysis for the gamma radiation fields in the research reactor MAPLE-X10 facility has been peformed under the assumption of partial loss of reactor and service pool water to assess the safety from the view point of design. Four photon source terms considered in the analysis were calculated using the ORIGEN-S code. Gamma dose rate calculations over the reactor and service pools during the water-loss accident conditions were performed using QAD-CG code. MCNP code (Monte Carlo Neuron and Photon Transport code), also, was used to assess the scattered radiation fields away from the pools, which is appropriate for calculating the scattered photon dose rates outside of the solid angle subtended by the source and pool walls.
Nuclear Energy Depositions in the Primary End Shields and Side Primary Shield Systems
Kim,Kyo-Youn,Kim,Jong-Kyung 대한방사선 방어학회 1992 방사선방어학회지 Vol.17 No.2
월성 원자력 발전소 2호기의 1차 종단 및 측면 차폐 계통의 각 차폐체에 대한 100% 출력 가동시 핵에너지 축적율 해서을 ANISN 코드를 이용하여 수행하였다. 본 해석 결과는 월성 원자력 발전소 2호기 계통 설계시 고려 사항으로 이용될 수 있다. It was carried out to analyze the nuclear energy deposition rates for the bulk shield components including materials of the primary end shied and side primary systems of Wolsong 2 during steady state operations at 100% full power using ANISN code. This paper has been prepared to support system design of Wolsong 2.
SHIELDING DESIGN ANALYSES FOR SMART CORE WITH 49-CEDM
Kim, Kyo-Youn,Kim, Ha-Yong,Cho, Byung-Oh,Zee, Sung-Quun,Chang, Moon-Hee 대한방사선 방어학회 2001 방사선방어학회지 Vol.26 No.3
In Korea, an advanced reactor system of 330MWt power called SMART (System integrated Modular Advanced ReacTor) is being developed by KAERI to supply energy for seawater desalination as well as electricity generation. A shielding design of the SMART core with 49 CEDM is established by a two-dimensional discrete ordinates radiation transport analyses. The DORT two-dimensional discrete ordinates transport code is used to evaluate the SMART shielding designs. Three axial regions represent the SMART reactor assembly, each of which is modeled in the R-Z geometry. The BUGLE-96 library is used in the analyses, which consists of 47 neutron and 20 gamma energy groups. The results indicate that the maximum neutron fluence at the bottom of reactor vessel is 5.89 × 1017 n/cm2 and that on the radial surface of reactor vessel is 4.49×1016 n/cm2. These results meet the requirement, 1.0×1020 n/cm2, in 10 CFR 50.61 and the integrity of SMART reactor vessel during the lifetime of the reactor is confirmed.
Kim, Kyo-Youn,Kim, Jong-Kyung Korean Nuclear Society 1993 Nuclear Engineering and Technology Vol.25 No.4
DOT4.2-QAD-CG coupling method was used to analyze the dose rates outside the side and the bottom shield system of CANDU 6 plant. The average dose rates at the main airlock and the new fuel loading area are approximately 6 $\mu$Sv/h as it is required. The calculated dose rates have a good agreement with the measurements at the operating CANDU 6 plant. The method used in this paper can be applied to the radiation shielding analysis of Wolsong 2, 3, and 4 CANDU 6 type plants which will be constructed in the near future.
Innovative reverse-electrodialysis power generation system for carbon capture and utilization
Kim, Hanki,Kim, Young-Eun,Jeong, Nam-Jo,Hwang, Kyo-Sik,Han, Ji-Hyung,Nam, Joo-Youn,Jwa, Eunjin,Nam, Sung-Chan,Park, Sung-Youl,Yoon, Yeo-Il,Kim, Chan-Soo Elsevier 2017 Journal of CO2 Utilization Vol.20 No.-
<P><B>Abstract</B></P> <P>Global warming has become a serious threat biosphere and effective measures are required to mitigate its intensification. To this end, carbon capture and sequestration (CCS) is a promising technology, while post-combustion capture (PCC) has been developed from CCS. However, an energy penalty during the regeneration step of the CO<SUB>2</SUB> absorbent has remained a critical problem. In the present study, a lab-scale test was conducted on carbon capture with reverse-electrodialysis (CCRED) to evaluate its potential to overcome the technical and economic drawbacks of CCS and RED. The results show that a normalized peak power density of 1W/m<SUP>2</SUP>, equal to 328.6kJ/kgCO<SUB>2</SUB>, could be obtained. The peak power density was 2000-fold higher than that in previous studies. By utilizing CO<SUB>2</SUB> as an energy source in CCRED, this novel process can compensate for the energy penalty in conventional CCS.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Lab-scale carbon capture with reverse-electrodialysis (CCRED) test was conducted to overcome the drawbacks of CCS and RED. </LI> <LI> Normalized peak power density of 1W/m<SUP>2</SUP>, equal to 328.6kJ/kgCO<SUB>2</SUB>, could be obtained from lab-scale CCRED unit. </LI> <LI> The peak power density was 2000-folded higher than in previous studies. </LI> </UL> </P>