초등학교 세면시설의 적정 설치에 관한 연구

권우택,이우식,Kwon, Woo-Taeg,Lee, Woo-Sik 한국환경보건학회 2011 한국환경보건학회지 Vol.37 No.6

Objectives: Students in elementary schools usually wash their hands in a washstand. However, little attention is paid to the washstand itself. Today, the importance of personal sanitation and hygiene is greatly emphasized. Therefore students' parents and the public are growing increasingly interested in accessibility to washstands by elementary school students in their schools. Methods: With respect to this study, a survey of students and teachers inelementary schools was performed on the installation of washstands in order to determine the proper number of washstands per school. Results: The results show that 1.1 boys (per class) need a washstand, while 1.8 girls (per class) do so in order to maintain a 50% level of crowdedness. By of the regression equation, to maintain 50% congestion (50% of all students feel congestion) there should be 18.5 boys, and the 15.76 girls per washstand. Table 3 is based on the above results, the number of students per washstand (x) and congestion (y), separated by gender according to the results of regression analysis, the correlation of male models in the linear regression analysis and correlation of girls in the regression equation can be obtained. The linear regression fit of less than 0.7 determines that the coefficients of determination are 0.5399 and 0.4195, respectively. Significance was much smaller. Also, according to the simulation using the diffusion model, with 29 students per class more than one washstand should be provided in a school. Girls (per class) need 0.7 more washstands than boys (per class). Conclusions: More washstand facilities for girls than boys are needed. If the target is based on school class size two washstands should be installed. Finally, guidelines and/or standards in the Schools Health Act of Korea forin elementary school washstands is considerably needed.

건축재인 콘크리트블록과 접착제의 소형챔버를 이용한 오염물질 방출특성 평가

권우택(Woo-Taeg Kwon),김기범(Ki-Bum Kim),김형철(Hyung-Chul Kim),김고성(Ko-Sung Kim),이기룡(Ki-Ryong Lee) 한국환경관리학회 2006 環境管理學會誌 Vol.12 No.2

본 연구에서는 친환경건축자재 개발을 위해 포름알데히드, TVOC의 제거에 높은 제거효율을 나타내는 GNC(Green Natural Clean)를 기존의 접착제에 5%를 첨가하여 친환경 접착제와 일반 콘크리트에 1:1,000, 1:3,000, 1:10,000, 1:50,000의 배합을 하여 제품을 개발하였는데, 개발한 제품의 방출실험을 측정분석 평가하였다. 실험방법은 건축자재 방출실험에 사용되는 소형챔버를 Batch조작하여 콘크리트 및 접착제의 TVOC 및 포름알데히드의 방출농도 특성을 비교실험 하여 다음과 같은 결과를 얻었다. 첫째, GNC첨가에 의한 TVOC 및 포름알데히드의 제거효율은 접착제에서 높은 효율을 나타냈으나 상대적으로 콘크리트에서는 낮은 효율을 나타냈다. 둘째, 수용성접착제의 경우 GNC를 5% 첨가한 접착제는 일반접착제에 비해 TVOC 방출농도가 48.4-59.0% 적게 방출되었으며, 용제형접착제의 경우 GNC를 5% 첨가한 접착제는 14.3-61.3%적게 방출되는 것으로 나타났다. 셋째, HCOH의 실험결과도 GNC의 효과가 매우 높은 것으로 나타났는데 수용성접착제의 경우 GNC를 5% 첨가한 접착제는 일반접착제에 비해 방출농도가 38.6-68.7% 적게 방출되었으며 또한, 용제형접착제의 경우 GNC를 5% 첨가한 접착제는 일반접착제에 비해 72.3-91.1%적게 방출되는 것으로 나타남으로 HCOH의 경우는 TVOC와 달리 용제형접착제에서 높은 효율을 나타냈다. 넷째, 콘크리트에서도 GNC첨가제품이 일반콘크리트에 비해 TVOC 및 HCOH의 방출농도가 낮게 나타났다. 다섯째, 콘크리트에서 TVOC 방출농도는 0.8-32.4%로 접착제에 비해 효율은 떨어짐을 보여주었고, HCOH방출농도는 33.3-66.7%로 나타났다. 여섯째, 1/10,000의 비율로 제조한 콘크리트가 TVOC 및 HCOH의 방출농도가 상대적으로 낮게 나타남으로 최적의 배합비율로 판단되었다. Building and furnishing materials and consumer goods are important sources of volatile organic compounds(VOCs) and other aldehydes in the indoor environment. It tested the removal efficiency of the HCOH and the TVOC of the construction material from the research which it sees. The test material the GNC (Green Natural Clean) in the adhesives which adds 5% in the adhesives and the general concrete blended at 1:1,000, 1:3,000, 1:10,000, 1:50,000 ratio and it develops product in the object. The testing method small Chamber is used in construction material emission test by the Batch. Comparison it tested the emission concentration of the TVOC and the HCOH of the concrete and the adhesives and with afterwords it got a same result. First, the removal efficiency of the TVOC due to a GNC addition and the HCOH it showed high efficiency from the adhesives but showed low efficiency relative from the concrete. Second, The adhesives which 5% adds GNC water soluble adhesives compared in the general adhesives and the TVOC emission concentration was few emitted 48.4-59.0%. Also, the adhesives which 5% adds the case GNC of the solvent type adhesives the TVOC emission concentration was few emitted 14.3-61.3%. Third, HCOH appeared with the fact that the effect of the GNC is high. The adhesives which 5% adds GNC of the water soluble adhesives compared in the general adhesives and the emission concentration was few emitted 38.6-68.7%. Also, the adhesives which 5% adds GNC of the solvent type adhesives in the general adhesives to compare, 72.3-91.1% it was few emitted. The case of the HCOH with the TVOC differently showed high efficiency from the solvent type adhesives. Fourth, concrete the GNC additive with compared in the general concrete and the emission concentration of the TVOC and the HCOH appeared lowly. Fifth, concrete the TVOC emission concentration with 0.8-32.4% compares in the adhesives and the efficiency falls to seem. And the HCOH emission concentration appeared with 33.3-66.7%. Sixth, The concrete which it manufactures at ratio 1/10,000 appeared emission concentration of the TVOC and the HCOH relativy lowly. It was judged at blending ratio of optimum.

사업장 근로자 측면에서의 안전보건활동 실태조사

권우택 ( Woo Taeg Kwon ),성승환 ( Seung Hwan Seong ),갈원모 ( Won Mo Gal ) 대한설비관리학회 2014 대한설비관리학회지 Vol.19 No.4

This study analyzes the actual state of health & safety activities in industrial classification. In addition, to compare and analyze the actual state of health & safety activities, both examinations; question investigation and visiting survey were used in this study. Consequently, we would like to comparatively analyze the excellent cases and the poor cases. Therefore, this result can contribute to decrease the rate of industrial accident.

도시시설의 도로기능별 적정입지분석을 통한 대기오염 저감방안에 관한 연구(Ⅰ)

권우택(Woo-Taeg Kwon),김형철(Hyung-Chul Kim),김기범(Ki-Bum Kim) 대한환경위생공학회 2003 대한환경위생공학회지 Vol.18 No.3

There are two ways of reducing air pollution. One is the approach of the pollutant source control and the other one is the traffic demand decreasing approach. This study is focusing on the approach of land use planning and optimal location of urban facilities because those are the basic cause to generate transportation demands. So, the purpose of this study would be to analyze the changes of NOx and CO distribution on environmental air by functional hierarchy of urban roads and to make evaluation model of "Transportation-Land Use-Air Pollution". It will contribute to improve the air pollution level at same actual traffic generation according to different location.

PSM 제도의 효율적 개선방안 -장외영향평가제도와 위해관리계획서와의 비교분석을 중심으로-

권우택 ( Woo-taeg Kwon ),성승환 ( Seung-hwan Sung ),갈원모 ( Won-mo Gal ) 대한설비관리학회 2017 대한설비관리학회지 Vol.22 No.3

Domestic petrochemical-based industries in order to prevent major industrial accidents since 1996, introduced the PSM(Process Safety Management) system, KOSHA (Korea Occupational Safety and Health Agency) divided into P, S, M+, M- grade through the validation and verification grade and then Ministry of Employment and Labor has been checking the implementation status of PSM workplace. According to the national audit submissions, P, S grade workplace accounted 19 of 27 dead(70%) over the last three years major industrial accidents. Regard of this study is the main basis of comparison, the analysis of the PSM system and relevant summary of the issue through the opinions of site engineer with a detailed review of the existing research results, management plan attempts to organize and comparison with similar off-site consequence analysis and risk management plan to compare the differences and features. For an in-depth investigation to conduct a survey and interview survey of experts, including representatives of the PSM consulting agency find out the problems of the PSM system, we propose a reasonable improvement method for effective PSM system.

ISCST3을 이용한 돈사의 복합악취 영향 분석

권우택(Kwon, Woo-Taeg),홍상표(Hong, Sang-Pyo),이우식(Lee, Woo-Sik) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.12

돈사에서 발생하는 악취로 인한 주변지역 영향을 EPA가 권장하는 ISCST3 모델을 적용하여 악취모델링을 실시하여 복합악취 기준과 비교하고 악취 저감대책을 수립하는데 기초자료로 활용하고자 하였다. 돈사 악취의 영향을 분석하기 위하여 자돈과 성돈에 따라서 평균치와 최소, 최대치로 분류하여 악취 농도를 예측 하였다. 양돈장의 혼합 악취의 예측 결과에서 인접 건물들은 허용한계를 초과하나 양돈장으로부터 185m 떨어진 거리에 있는 피해지역에서는 허용한계를 만족하였다. 허용한계에 대한 악취 배출량을 확인하기 위해 관리동에서 누출량을 측정하였으며 누출량 50%, 30%, 10% 기준으로 악취 농도를 예측한 결과는 관리동에서 1hr 기준 최대 발생량이 10.59∼52.93, 19.05∼31.76, 10.59 OU/㎥/s/㎡로 수인한도 10.00 OU/㎥/s/㎡를 다소 초과하는 것으로 예측 되었으나, 누출량을 10% 미만으로 관리시 수인한도를 만족할 수 있을 것으로 판단된다. This study is expected to provide background data for establishing mitigation measures for malodor and for comparing complex odor criteria. The impact of malodor at the afflicted locations was analyzed using Industrial Source Complex Short Term 3 (ISCST3) model, which was recommended by the EPA. The Odor Emission Rates (ODR) for piglets and hogs were predicted based on the average, minimum, and maximum emission rates as classification. The forecasting result of the complex odor modelling of pigsty showed that tolerance limit was exceeded at an adjacent administration building, but tolerance limit was not surpassed at an afflicted location which was within 185m from the pigsty. The ISCST3 modelling of the satisfactory ODR for tolerance limit was accomplished at the administration building. From the prediction of this modelling, maximum emission rates based on 1hr at administration building were 10.59~52.93, 19.05~31.76, and 10.59 OU/㎥/s/㎡ at emission rates of 50%, 30%, and 10%. This emission rate was slightly higher than the tolerance limit of 10.00 OU/㎥ /s/㎡. However, it was inferred that the tolerance limit could be satisfied if the emission rate of 10% was controlled.

연구논무 : 대규모 단지조성 미세먼지 관리 방안

권우택 ( Woo Taeg Kwon ),이우식 ( Woo Sik Lee ),홍상표 ( Sang Pyo Hong ) 한국환경영향평가학회 2013 환경영향평가 Vol.22 No.1

조리실내의 유해오염물질 제거율에 관한 연구

권우택(Woo-Taeg Kwon),이우식(Woo-Sik Lee) 한국조리학회 2016 한국조리학회지 Vol.22 No.8

A Simulation on the Change of Distribution of Air Pollution Caused by Transportation and Meteorological Factors

권우택(Woo-Taeg Kwon) 한국환경관리학회 2005 環境管理學會誌 Vol.11 No.4

공중이용 화장실의 미생물 분포 조사

최한영,권우택,이우식,이향,Choi, Han-Young,Kwon, Woo-Taeg,Lee, Woo-Sik,Lee, Hyang 한국환경보건학회 2012 한국환경보건학회지 Vol.38 No.6

Objective: This study was performed to assess bacterial distribution concerned in sanitation management of public lavatory in Seoul. Methods: In this research, bacteriological investigation on public lavatory was accomplished for bidet water, bidet nozzle, washbowl and lavatory stool in the 50 public facilities such as public institutions, subway stations, cinema, department stores, large-scale buildings and hospitals amount to 374 specimens. Results: The geometric mean of colony forming unit(CFU) in total aerobic colony count were analyzed as follows; $5.2{\times}10^2/100cm^2$ on lavatory stool, $7.2{\times}10^3/ea$ on bidet nozzle, $7.8{\times}10^3/ea$ on center ring of washbowl, $1.4{\times}10/mL$ in bidet water (ml) and 7.0/ea on doorknob. Opportunistically pathogenic germs such as Staphylococcus aureus, Escherichia coli, Enterobacter cloacae, Pseudomonas aeruginosa were isolated in 3.7%, 5.9%, 3.2% and 1.9% of total specimens, respectively. Conclusion: The result of this study shows that there were some facilities where the pathogenic germs were detected to may cause urological infection. And the CFU of general bacteria as the representative indicator of disinfection and lavatory cleaning were high enough to imply the improvement of sanitation management of public lavatories should be contrived.