• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.669-673
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• 2006

터널 청소는 현장작업이기 때문에 대단히 열악한 근로조건에 놓여있다. 시공되는 터널의 증가로 청소해야 할 터널이 점점 많아지고 있다. 하지만 터널의 증가에 비해 청소 분야에서 숙련공에 대한 구인난과 고령화는 해소되지 않고 있으며, 이들에 대한 임금 상승이 지속되는 것으로 조사되었다. 이에 대응하여 해결방안으로 제시된 것들 중의 하나가 바로 자동화${\cdot}$기계화이다. 최근 산업로봇의 발달로 인해 인력으로 해왔던 일들이 점차 줄어들고 신속하고 쾌적한 환경에서 작업할 수 있게 되었다. 하지만 건설로봇이 개발되기 시작한 것은 불과 10년 정도로 지금까지 개발된 전 세계 건설로봇은 90여종 200여대 정도에 지나지 않는다. 이중 터널 청소 분야에서는 장비는 개발되었더라도 완벽한 자동화를 이루지 못해 추가로 인력이 투입되는 실정이다. 터널 청소는 직업의 안정성, 임금, 안전, 쾌적한 작업 환경 등을 만족시키지 못하고 작업자의 생명을 위협하는 수준에까지 이르고 있어 터널청소장비의 개선이 시급하다. 본 연구는 기존의 터널청소의 문제점 및 기존 터널장비의 문제점을 분석하고 이를 바탕으로 개선된 터널청소 장비를 제안하고자 한다.

• 전자공학회논문지
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• 제51권8호
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• pp.195-201
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• 2014

본 논문에서는 도광판(LGP, Light Guide Panel)의 미세먼지 세정을 위해 건식 점착롤 제진과 코로나 대전을 이용한 제전(ESD, electrostatic discharge) 방식을 적용한 건식 세정 장치를 개발한다. 이를 위해 점착롤 제진과 제전 방식을 혼합 적용할 수 있는 세정 메커니즘을 설계하고, LGP를 자동으로 로딩/언로딩 및 이송할 수 있는 장치를 설계하고 구현한다. 그리고 이물질 및 미세먼지 세정 실험을 통해 개발된 시스템이 안정적으로 동작함을 확인하였다.

• 기본간호학회지
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• 제18권4호
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• pp.472-479
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• 2011

Purpose: The purpose of this study was to develop guidelines for cleaning of enteral nutrition bags by comparing the level of equipment contamination according to cleaning and disinfection methods. Method: This study was a true-experimental study, with 60 cases in total. Twenty cases each were randomly assigned to tepid water, detergent and brush, and disinfectant groups. The period of the experiment was March to April 2010, and enteral nutrition was given for 1 houre, 3 times a day at 7AM, noon, and 7PM for seven days. Enteral nutrition bags were cleaned after each feeding according to assigned cleaning and disinfection method followed by microbial cultures on 4th and 8th day before the 7AM feeding. Results: After 3 days of feeding and cleaning, the level of contamination of bags was not significantly different among the three groups. After seven days, the level of contamination was significantly lower when bags were cleaned with detergent and brush or with disinfectant compared to cleaning with tepid water. Conclusion: In cases where enteral nutrition bags are reused for example, in home care settings, studying findings indicate that cleaning bags using detergent and brush or disinfectant is an effective way to prevent contamination of bags.

• 한국산업보건학회지
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• 제30권2호
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• pp.174-184
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• 2020

Objectives: The purpose of this study was to improve the working environment by identifying the work satisfaction of the cleaning workers of the aircraft and measuring and assessing the harmful factors of the cleaning process. Methods: We asked 23 cleaning companies for questionnaires and got 100 answers from 5 companies. The A-E Airline health manager has been contacted to establish a site survey schedule. The in-flight and lounge were measured using direct reading equipment. The harmful factor to be measured are noise, dust, temperature, volatile organic compound, total airborne bacteria, and total airborne bacteria. Results: Uncomfortable positions when replacing blanket, cleaning the table, and cleaning the floor have been identified as factor that reduce work satisfaction. Noise when replacing newspapers and cleaning toilets has been identified as a factor that lowers work satisfaction. Temperature and humidity were found to reduce work satisfaction during in-flight disinfection. Measurements of aircraft cabin and lounge with direct read equipment have shown that none of the items exceed the exposure criteria. Conclusions: As a result of measuring direct-reading equipment, no items exceeded the exposure criteria for each harmful factor. A clear survey of the working environment is required based on the results, and additional research is needed using personal sample measurement.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2018년도 공동국제학술발표회
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• pp.164-164
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• 2018

• 반도체디스플레이기술학회지
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• 제23권2호
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• pp.114-122
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• 2024

NF₃, Chamber cleaning gas, has a high Global Warming Potential (GWP) of 17,000, causing significant greenhouse effects. Reducing gas usage during the cleaning process is crucial while increasing the cleaning Rate and reducing cleaning standard deviation (Stdev). In a previous study with a 6-inch PECVD chamber, a multiple linear regression analysis showed that Power and Pressure had no significant effect on the cleaning Rate because of their P-values of 0.42 and 0.68. The weight for Flow is 11.55, and the weights for Power and Pressure are 1.4 and 0.7. Due to the limitations of the research equipment, which differed from those used in actual industrial settings, it was challenging to assess the effects in actual industrial environment. Therefore, to show an actual industrial environment, we conducted the cleaning process on a 12-inch PECVD chamber, which is production-level equipment, and quantitatively analyzed the effects of each variable. Power, Pressure, and NF3 Flow all had P-values close to 0, indicating strong statistical significance. The weight for Flow is 15.68, and the weights for Power and Pressure are 4.45 and 5.24, respectively, showing effects 3 and 7 times greater than those with the 6-inch equipment on the cleaning rate. Additionally, we analyzed the cleaning Stdev and derived that there is a trade-off between increasing the cleaning Rate and reducing the cleaning Stdev.

• 공기청정기술
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• 제4권1호통권13호
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• pp.82-106
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• 1991

• 공기청정기술
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• 제4권3호통권15호
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• pp.66-92
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• 1991

• 공기청정기술
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• 제12권4호통권47호
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• pp.94-108
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• 1999

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 추계 학술논문 발표대회
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• pp.115-116
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• 2014

This study investigated power generation of photovoltaic equipment at detached houses. The study estimated monthly mean generation according to maintenance conditions that included module cleaning, inspection into generation, cleaning of module and photovoltaic generation. At analysis upon generation, households with periodical module cleaning and inspection into generation, clean module and good generation conditions had high generation. 20-years of PV equipment life varied much depending upon maintenance conditions. Users should keep module clean and inspect generation regularly and put PV equipment at the place with good solar radiation.