• The monthly packaging world
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• s.289
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• pp.89-105
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• 2017

산업통상자원부가 주최하고 한국생산기술연구원 패키징기술센터가 주관하는 '제11회 미래패키징 신기술 정부포상' 시상식이 4월1 8일 경기도 일산 KINTEX 그랜드볼룸에서 열렸다. 국내 최고 권위의 패키징 종합 행사인 '미래패키징 신기술 정부포상'은 관련 산업 종사자의 긍지를 높이고 기술혁신 분위기를 확산하기 위해 2007년부터 한국생산기술연구원(원장 이성일, 이하 생기원)이 매년 개최해온 행사다. 11회를 맞이한 올해에는 (주)휴비스의 'PET 발포 패키징'이 대상인 국무총리상을 수상했다. 산업부장관상은 메디클란트의 '일회용 콘텍트렌즈 패키지', 신우코스텍의 '인몰드 3D 라벨 PET패키징 블로우 성형기', (주)한국콜마의 '힌지 회동에 의한 자동 기립형 팔레트 화장품', 엘지전자(주)의 'LG코드제로 청소기 패키징 디자인' 등이 수상했다. 이밖에 CJ제일제당을 비롯한 9개 기업이 한국생산기술연구원장상을, 2개 기업이 부천시장상, 3개 기업이 한국패키징단체총연합회 회장상, 10개 기업이 한국포장기술사회장상을 수상하는 등 총 43개의 기술 및 제품이 수상작으로 선정됐다. 또한 장형순 삼영잉크페인트제조(주) 고문과 박현진 고려대학교 교수가 국내 포장산업 발전에 기여한 공적을 인정받아 공로 부문에서 산업통상자원부 장관표창을 수여받았다. 올해 수상작들은 안전한 식품 포장소재 개발과 대량생산 상용화, 명확한 라벨링, 경량포장 확대, 재활용재료의 사용증가 등 기본에 충실하면서도 기술융합을 통해 패키징의 가치를 높였다는 평가를 받았다. 다음에 제11회 미래패키징 신기술 정부포상 수상작을 살펴보고 최신 국내 패키징 경향에 대해 알아보도록 한다.

• Journal of Environmental Science International
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• v.31 no.1
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• pp.33-42
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• 2022

The objective of this study is to determine the appropriate size of the inlet pipe diameter and thereby conduct hydraulic analysis for the Korean water distribution network. To this end, the data tables for equivalent pipe diameters and outflow rates presently employed in Korea were adopted. By incorporating the table of equivalent pipe diameters, it was found that the size of the inlet pipe diameter was overestimated, which can cause shortage of water pressure and malfunctioning or insufficiency of outflow rate in the corresponding adjacent region. However, by conducting hydraulic analysis based on the table of outflow rates, relatively reasonable flow rates were observed. Furthermore, by comparing the real demand-driven analysis (RDDA) approach and demand-driven analysis (DDA) approach toward managing the huge water demand, it was observed that DDA could not effectively respond to real hourly usage conditions, whereas RDDA (which reflects the hourly effects of inlet pipe diameter and storage tanks) demonstrated results similar to that of real water supply.

• Journal of Korea Water Resources Association
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• v.55 no.spc1
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• pp.1187-1195
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• 2022

To run the algorithm for identifying the segments of a pipe network, the relative positional relation between nodes, pipes, and valves should be prepared as input information of a segment search algorithm. In order to more accurately identify the segments of real pipe network, pipe network GIS/CAD database that contains all isolation valves is more suitable than modeled pipe network information used for a hydraulic analysis program. In this study, we developed an algorithm that can establish the relative positional relations among node-pipe-valve suitable for pipe network segment search algorithms using GIS/CAD data of a real water supply network, and developed a MATLAB program that can implement it. The effectiveness of the developed MATLAB program was confirmed by applying it to a portion of a real municipal pipe network.

• Journal of the Korea institute for structural maintenance and inspection
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• v.28 no.1
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• pp.46-52
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• 2024

The structural safety of expansion joints for piping systems has been drawing attention owing to ruptures and leaks of water pipes caused by earthquakes and road subsidence at soft ground. In general, metal bellows are installed as expansion joints to prevent various damages in the piping system. In this study, the seismic performance of a valve chamber system was evaluated by performing earthquake shaking table tests. To validate the benefits to structural safety of metal bellows in connecting steel pipes to valve chambers, the seismic tests were conducted on expansion joints (bellows) and general pipping, and the results were compared for durability. Strain gauges were attached to measure the effects of the input motion. As a result of the shaking table test, it was confirmed that the strain of the valve chamber structure and inflow or outflow steel pipes were decreased in 1/100, 1/20 by applied to the expansion joints.

• Journal of Radiation Industry
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• v.10 no.1
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• pp.29-35
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• 2016

Radiation generating devices must be properly shielded for their safe application. Although institutes such as US National Bureau of Standards and National Council on Radiation Protection and Measurements (NCRP) have provided guidelines for shielding X-ray tube of various purposes, industry people tend to rely on 'Half Value Layer (HVL) method' which requires relatively simple calculation compared to the case of those guidelines. The method is based on the fact that the intensity, dose, and air kerma of narrow beam incident on shielding wall decreases by about half as the beam penetrates the HVL thickness of the wall. One can adjust shielding wall thickness to satisfy outside wall dose or air kerma requirements with this calculation. However, this may not always be the case because 1) The strict definition of HVL deals with only Intensity, 2) The situation is different when the beam is not 'narrow'; the beam quality inside the wall is distorted and related changes on outside wall dose or air kerma such as buildup effect occurs. Therefore, sometimes more careful research should be done in order to verify the effect of shielding specific radiation generating device. High energy X-ray tubes which is operated at the voltage above 400 kV that are used for 'heavy' nondestructive inspection is an example. People have less experience in running and shielding such device than in the case of widely-used low energy X-ray tubes operated at the voltage below 300 kV. In this study, Air Kerma value per week, outside concrete shielding wall of various thickness surrounding 450 kVp X-ray tube were calculated using MCNP simulation with the aid of Geometry Splitting method which is a famous Variance Reduction technique. The comparison between simulated result, HVL method result, and NCRP Report 147 safety goal $0.02mGy\;wk^{-1}$ on Air Kerma for the place where the public are free to pass showed that concrete wall of thickness 80 cm is needed to achieve the safety goal. Essentially same result was obtained from the application of HVL method except that it suggest the need of additional 5 cm concrete wall thickness. Therefore, employing the result from HVL method calculation as an conservative upper limit of concrete shielding wall thickness was found to be useful; It would be easy, economic, and reasonable way to set shielding wall thickness.