• 조명전기설비학회논문지
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• 제23권12호
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• pp.83-89
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• 2009

최근 국내 전력산업의 주변 환경, 즉 전기요금의 가격, 환경보호 및 에너지 문제 등으로 인해 전기사업을 보다 능동적으로 운영하기 위한 필요성이 제기되고 있다. 지금까지 대부분의 전력회사에서는 전력계통의 신뢰도에 중점을 두고 전력을 공급하였지만 모든 조건에 일률적으로 적용하는 것은 막대한 비용 상승을 동반하기 때문에 전력회사에서는 전력설비를 설치 또는 운영하는 것에 대해 보다 유연하게 대처하기 위하여 기기 투자비용에 대한 가치 및 이득을 검토하는 것이 필요하다. 따라서 본 연구에서는 지중배전기기의 설치위치별로 국외 사례 및 국내 환경을 고려하여 그 효과를 분석하였으며, 본 연구결과는 향후 지중배전기기의 현장 적용 시 검토방안과 대책으로써 활용이 기대된다.

• 한국건설순환자원학회논문집
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• 제7권3호
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• pp.85-90
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• 2012

In this study, temperature profile of the fly ash concrete were studied in accordance with the change of heating curing method combination for the slab concrete in order to develop efficient protection method of the concrete subjected to $-20^{\circ}C$. The slab concretes with the size of $1200mm{\times}600mm{\times}200mm$ were fabricated with W/B of 50% and exposed to $-20^{\circ}C$ for 7 days. Five different combinations of heat curing methods were applied to the slab concrete specimen; two combinations of heat supplying by electrical heater and surface heat insulation material such as polyethylene film and quadrupled layer bubble sheet based on heat enclosure installment; three combinations of heating coil embedment and surface heat insulation materials such as polyethylene film, sawdust and quadrupled layer bubble sheet based on heat enclosure installment. Test results showed that by applying both heating coil and bubble sheet and heat enclosure, the concrete exposed to $-20^{\circ}C$ can be effectively protected from early-age frost damage.

• 한국실내디자인학회논문집
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• 제17권5호
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• pp.80-90
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• 2008

This study analyzes interior features of indoor community facilities, focused on apartment complexes in capital area selected by 'Award of best living apartment' during $2000{\sim}2007$. First we analyze community facilities' concept, present standards of installment, present condition, then the size of each complex compared with legal standards. Also, we analyze interior features(spacial layout, furniture and furnishings, interior finishing materials, interior color), too. Research methods included both data survey and site visiting inquiry. Data survey method analyzes size of each complex using community facilities' floor plans, and site visiting inquiry analyzes type and feature of community facilities. Survey target was total 11 complexes, 7 in Seoul, 4 in Gyeonggi-do. The result is as follows. 1) It is needed to improve legal standards of installment, and to provide space with flexibility and changeability in order to allow alternation of usage purpose by resident's claim. 2) To determine size of community facilities, we must planned not only by the number of households, but by legal standards of supply according to the number of households, the rate of net area, and the recommended size per person. 3) The area of community facilities in apartment complex that residents use doesn't considered user's convenience. So it us needed to add each facility's recommendation in response to user's needs.

• 대한안전경영과학회지
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• 제13권2호
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• pp.19-30
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• 2011

The introduction of the OHSMS(occupational health and safety management system) into the enterprise has been increased. But, to prevent accidents and take the value creation effectively, it is recommended that this system and the other management system based on business process should integrate. This paper deals with the present conditions and business values of OHSMS, KOSHA 2000, OHSAS 18001 and/or K-OHSMS 18001, which have introduced to Korea since 1997. By reviewing literature, we analyzed study trends in the development of quantitative and qualitative certification standards and the assessment methods of OHSMS. Also, we can summarize the field issues related to installment and operation of OHSMS : motivation, advantage, problems, obstacles, lessons, and revitalization. And then we can suggest issues of the integrated management system such as background, purpose, adoption view, and the integration types.

• Safety and Health at Work
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• 제9권2호
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• pp.184-191
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• 2018

Background: Due to an increasing number of workers aged 50 years and above, the number of those employed is also on the rise, and those workers aged 50 and over has exceeded 50% of the total fatal occupational injuries. Therefore, it is necessary to implement the selection and concentration by identifying the characteristics of high-risk groups necessary for an effective prevention against and reduction of fatal occupational injuries. Methods: This study analyzed the characteristics of high-risk groups and the occupational injury fatality rate per 10,000 workers among the workers aged 50 and over through a multi-dimensional analysis by sex, employment status of workers, industry and occupation by targeting 4,079 persons who died in fatal occupational injuries from January 2007 to December 12. Results: The share of the workers aged 50 years and above is increasing every year in the total fatal occupational injuries occurrence, and the high-risk groups include 'male workers' by sex, 'daily workers' by worker's status, 'craft and related-trades workers' by occupation, and 'mining' by industry. Conclusion: The most frequent causal objects of fatal occupational injuries of the workers aged 50 years and above are found out to be 'installment and dismantlement of temporary equipment and material on work platforms including scaffold' in the construction industry and 'mobile crane, conveyor belt and fork lifts' in the manufacturing industry.

• 한국실내디자인학회논문집
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• 제19권1호
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• pp.128-136
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• 2010

At present, the Korean display industry lacks significantly in qualitative achievements when compared to quantitative achievements. Of course, there are various systems established according to the developments of display design organizing methods, production, and installing methods through some preceding studies related to display, but it is true that the wholistic management through display business management process which is prerequisite for this field is now considered yet. This has led to consistent and repetitive limitations, although many have undergone numerous trials and errors, along with related conflicts during implementing display business. Accordingly, organizing process and system for display business management field is the most field to be studied in order to not follow suit of the existing problems and look back on the failure factors of past display business. This study is focused on studying stage-to-stage research on organizing process and system for display business management, and aims to provide basic information for a more efficient management which can be realized during future business implementation for display culture facilities. The followings are the conclusions for this study. First, in order to successfully implement display business, the role of display business management is crucial, and the related need for display business management operations was proved. Second, the viability of 'Check-List for examining displaying product designs, production and installment' was verified, along with suggestions for additional factors to be considered in the examining check-list. Finally, third, the analyzing process of this study is focused on analyzing the facilities according to justifiable analysis factors. However, there are limitations such as corning up with subjective facts which can be known through naked eyes. Thus, the necessity for additional researches which can supplement the limitations of this study was found.

• 산업기술연구
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• 제25권B호
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• pp.63-71
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• 2005

This paper is an experimental result of investigating lateral soil movements at piled bridge abutments by using the centrifuge model facility. Three different centrifuge model experiments, changing the methods of ground improvement at bridge abutment on the soft clayey soil (no improvement, preconsolidation and plastic board drains (PBD), sand compaction pile (SCP) + PBD), were carried out to figure out which method is the most appropriate for resisting against the lateral soil movements. In the centrifuge modelling, construction process in field was reconstructed as close as possible. Displacements of abutment model, ground movement, vertical earth pressure, cone resistance after soil improvement and distribution of water content were monitored during and after centrifuge model tests. As results of centrifuge model experiments, preconsolidation method with PBD was found to be the most effective against the lateral soil movement by analyzing results about displacements of abutment model, ground movement and cone resistance. Increase of shear strength by preconsolidation method resulted in increasing the resistance against lateral soil movement effectively although SCP could mobilize the resistance against lateral soil movement. It was also found that installment with PBD beneath the backfill of bridge abutment induced effective drainage of excess pore water pressure during the consolidation by embanking at the back of the abutment and resulted in increasing the shear strength of clay soil foundation and eventually increasing the resistance of lateral soil movement against piles of bridge abutment.

• Safety and Health at Work
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• 제11권4호
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• pp.509-516
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• 2020

Background: Meta-analyses have shown firefighters to be at an increased risk of several cancer types. Occupational carcinogen exposure may explain these increased risks. This study aims to describe Norwegian fire departments' work conditions from 1950 until today, focusing on factors relevant for potential occupational carcinogen exposure. Methods: With the help of a reference group, we developed a questionnaire on topics related to occupational exposure to carcinogens for the period 1950-2018. Selected Norwegian fire departments provided department-specific responses. Results: Sixteen departments, providing fire services for 48% of the Norwegian population as of 2019 and mainly consisting of professional firefighters, responded to our questionnaire. The introduction of synthetic firefighting foams, more regular live fire training, the introduction of chemical diving, and a higher number of diesel-driven fire service vehicles were identified as changes thought to increase exposure to occupational carcinogens. Changes thought to decrease exposure included the switch from negative to positive pressure self-contained breathing apparatuses, the use of self-contained breathing apparatuses during all phases of firefighting, the use of ventilating fans during firefighting, increased attention to flammable materials used during live fire training, increased attention to handling and cleaning of turnout gear and other equipment, and installment of exhaust removal systems in apparatus bays. Conclusion: Norwegian fire departments' work conditions have seen several changes since 1950, and this could influence firefighters' occupational carcinogen exposure. A peak of carcinogen exposure may have occurred in the 1970s and 1980s before recent changes have reduced exposure.

• 한국재난관리표준학회지
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• 제3권2호
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• pp.65-71
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• 2010

본 연구는 우리 조상의 소중한 목조 문화재가 화재로 인해 소멸되는 것을 방지하기 위하여 화재진압 방법 중 하나인 가스소화설비를 이용하여 목조문화재 적심부의 화재진압 방법에 관한 것이다. 목조문화재는 적심부로 연소 전이시 진압이 매우 곤란하기 때문에 적심부 연소시 파괴를 수반하지 않는 화재 진압은 불가능하다. 스프링클러설비 등과 같이 현대 건축물에 설치되는 소방시설은 소화효과는 높은 반면에 설치와 작동에 따른 문화재 손상의 우려가 높아 목조문화재에 대한 적용성이 낮으므로 이러한 문제점을 최소화하면서 소화효과를 거둘 수 있는 소화설비 개발의 필요성을 제기하였고 타당성이 입증된 시험결과를 토대로 설치방안의 필요성을 제시하였으며, 적심부는 한국 고유의 건축방식으로 외국에 유사사례를 찾아 볼 수 없어 고정소화장치 개발을 통한 화재진압의 신속성과 효율성을 제고한 가스계 소화설비 소화방법을 개발하여 문화재의 손상을 최소화하면서 효용성을 검증하기 위한 실험을 연구하였다. 연구내용으로는 연구 실험 모형틀을 제작하여 소화방법을 수립, 소화시설을 설치하여 1차로 개판 천공 주수공 설치의 화재진압 효과성을 실험하였고 2차로 개판 천공 소화가스 주입구 설치의 화재 진압 효과성을 실험하였으며 그에 따라 숭례문과 유사한 목조 문화재의 경우 지붕의 적심부가 화재진압의 성패를 결정함으로 향후 유사사건의 발생시 신속하고 효율적인 화재진압을 위하여 소화방법에 관한 의견을 제시하였으며 그에 따라 목조 건축물(문화재) 진압대책 수립을 위한 객관적 데이터를 확보하였고 가스계 고정소화설비의 설치를 통한 문화재 방화대책 효과의 과학적 검증을 제시하였다.

• 한국건설관리학회논문집
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• 제11권3호
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• pp.55-63
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• 2010

건설과정에서 발생하는 소음 진동에 대한 민원은 꾸준히 증가하고 있지만 공사 중 발생하는 소음 진동은 대부분 시공단계에서만 관리되고 있다. 이는 시공단계에서 발생하는 소음 진동 관리의 한계라고 판단되며, 공사 중 발생하는 소음 진동을 저감하기 위해 설계단계에서의 관리가 필요하다는 것을 의미한다. 본 논문의 목적은 공사 중 발생하는 소음 진동 관리의 효율성을 높이기 위해 설계단계에서 고려할 수 있는 공사 중 발생하는 소음 진동의 관리항목을 제시하고 이를 설계자가 직접 평가할 수 있는 평가시트와 관리 항목의 이해를 돕기 위한 매뉴얼을 개발하는 것이다. 이를 위해 기존 연구문헌을 검토 분석하여 설계단계에서 고려해야 할 공사 중 소음 진동의 관리항목을 식별하였고, 항목의 적정성을 검증하기 위해 환경전문가와 면담을 실시하여 9개 항목을 확정하였다. 항목간의 중요도 산정과 우선순위 식별을 위해 AHP(Analytic Hierarchy Process)기법을 적용하였다. 그 결과 설계단계에서 공사 중 발생하는 소음 진동을 관리하는데 가장 효율적인 항목들은 저소음 저진동 공법선정, 발파공사에 의한 소음 진동 저감방안, 소음 진동방지시설 설치 및 배치계획 순으로 나타났다. 본 연구의 성과는 공사 중 발생하는 소음 진동을 효율적으로 관리하여 환경분쟁 및 민원을 사전에 예방하고, 성공적인 건설사업을 위해 유익하게 활용될 것으로 기대된다.