This study had the purpose to prepare a well-organized strategy to unify facility safety management system by analyzing the problems of present system for facilities subject to particular management, and identifying obstacle elements by "Special Act on the Safety Control of Public Structures". To that end, the study was conducted as follows: First through identification of the status of domestic facility safety management system and analysis of facility management system in advanced foreign countries, logic for unification of domestic facility safety management system was proposed. Second the problems of the safety management system for facilities subject to particular management, and considerations for unification were analyzed. Third, strategy for unification of facility safety management system including safety management subject and checking period etc was proposed.

Many of the structures constructed since the 1970s have begun to deteriorate. As a result, safety inspection / diagnosis and maintenance are expected to increase further, and long-term and systematic measures are urgently needed to prepare for the aging of major infrastructures. Currently, the safety inspection and maintenance of the structure is carried out by the method based on the utilization of the measurement data and the manager's experience, but the reliability and the accuracy are still insufficient. In other words, there is a limit to understanding the state change of bridges, such as abnormal behavior and gradual damages, therefore, it is necessary to have an accurate and reliable monitoring process using new techniques and systems. For this reason, I would like to examine the possibility of using cloud and big data in the field of infrastructure safety management.

This paper propose to make a Construction site safety management system using beacon indoor positioning technology. in this system, as using beacon, it can measure the position of worker who have smartphone or any device which have bluetooth function. there is two way to use technology of beacon, first one is distance technology which can alarm dangerous situation such as appoaching heavy equipment. second one is location positioning technology. it is the main technology which can measure the position of workers in real time. this system is based on low energy and accurate sensor, beacon, and have a low cost advantage. so it is expected to improve safety on the construction site.

나노기술이 급격히 발전함에 따라 다양한 산업, 의학, 환경 분야에서 나노물질의 사용 또한 급증하고 있다. 나노물질이란 1~100nm 크기의 미세입자로서 가정에서 흔히 사용하는 세정제나 항균코팅제, 페인트, 화장품, 전기전자제품, 토너 뿐만 아니라 의료기기, 배터리 등 다양한 분야에서 적용되고 있다. 이러한 상당량의 나노물질들은 제조사업장이나 실험실에서 폐기되거나 일반소비자들이 나노제품을 사용한 후 결국 나노물질을 함유한 폐기물, 즉 나노폐기물의 형태로 배출되고 있다. 이들 나노물질이나 제품이 인체건강에 미치는 안전성에 대한 문제 또한 지속적으로 제기되고 있으나, 현재 별도의 관리 없이 기존 일반폐기물들과 함께 처리되고 있는 실정이다. 이에 본 연구에서는 나노폐기물의 주요 배출원 및 노출경로를 조사하고, 특히 주요 폐기물 처리시설 중 소각시설에서의 처리실태를 바탕으로 향후 나노폐기물 안전처리를 위한 연구 추진과제 및 관리전략을 마련하였다. 특히, 국내 유통량 및 선행연구 적용사례, 해당 물질의 유해 특성에 기반하여 4가지 나노물질(n-TiO2,n-ZnO, n-Ag, CNT)을 선정하였으며, 이들 나노물질을 대상으로 소각시설로의 유입 및 배출 시나리오(I, II, III)를 통해 물질흐름을 예측하였다. 이 중 국내 폐기물 처리비율을 반영한 시나리오 III에 따르면, n-TiO2의 경우 연간 약 48톤이, n-ZnO는 178톤이 소각시설로 유입된 후 대부분 매립되며(65%), n-Ag는 상대적으로 소량 생산되어 7톤 정도 소각시설로 유입될 것으로 추정되었다. 또한 앞서의 흐름 파악 및 실태조사를 바탕으로 향후 나노폐기물 안전처리를 위한 추진과제 및 관리전략을 마련하였다. 본 연구에 이어 향후 폐기물 부문, 화학물질 부문과 수처리 부문(슬러지류의 경우) 간 통합적 협력 및 정책 개발을 통해 나노폐기물을 보다 안전하게 관리할 수 있는 시스템이 마련되어야 할 것이다.

This study is a part of the research on the development of safety monitoring system and monitoring program of 3MW offshore wind support structure using fiber optic sensor. In this paper, we propose a maintenance system for offshore wind support structure using fiber optic sensor based on the analysis of current monitoring status and related standards of domestic and overseas offshore wind support jacket structures.

In this study, the effect of electromagnetic wave from an electronic device on electric sensor system and optic sensor were analyzed to verify the reduction effect of a optic sensor and applicability to marin structure. Test revealed that optic sensor system was not occurred the noise by electromagnetic waves also had the low range of fluctuation.

This study had the purpose to prepare a well-organized strategy to unify facility safety management system by analyzing the problems of present system for facilities subject to particular management, and identifying obstacle elements by "Special Act on the Safety Control of Public Structures". To that end, the study was conducted as follows: First through identification of the status of domestic facility safety management system and analysis of facility management system in advanced foreign countries, logic for unification of domestic facility safety management system was proposed. Second the problems of the safety management system for facilities subject to particular management, and considerations for unification were analyzed. Third, strategy for unification of facility safety management system including safety management subject and checking period etc was proposed.

This study is a part of the research on the development of safety monitoring system and monitoring program of 3MW offshore wind support structure using fiber optic sensor. In this paper, we propose a maintenance system for offshore wind support structure using fiber optic sensor based on the analysis of current monitoring status and related standards of domestic and overseas offshore wind support jacket structures.

In this study, the effect of electromagnetic wave from an electronic device on electric sensor system and optic sensor were analyzed to verify the reduction effect of a optic sensor and applicability to marin structure. Test revealed that optic sensor system was not occurred the noise by electromagnetic waves also had the low range of fluctuation.

This study had the purpose to prepare a well-organized strategy to unify facility safety management system by analyzing the problems of present system for facilities subject to particular management, and identifying obstacle elements by "Special Act on the Safety Control of Public Structures". To that end, the study was conducted as follows: First through identification of the status of domestic facility safety management system and analysis of facility management system in advanced foreign countries, logic for unification of domestic facility safety management system was proposed. Second the problems of the safety management system for facilities subject to particular management, and considerations for unification were analyzed. Third, strategy for unification of facility safety management system including safety management subject and checking period etc was proposed.

Recycling standards and methods of steel slag are prescribed in the “Waste Control Act” and the “Act on the Promotion of Saving and Recycling of Resources”. However, the recycling purposes and methods for non-ferrous slag are permitted for lead, zinc, and aluminum slag, etc., and only small amounts are recycled. Most non-ferrous slags are treated by consigned treatment or landfill. In addition, some non-ferrous slag can cause environmental pollution when directly recycled in soils or result in high costs for disposal or storage due to high heavy metal concentrations. In this study, we investigated the characteristics of slag generated during non-ferrous metal processing or recycling, providing recycling purposes and methods including those for useful metal recovery based on the characteristics of slags, cement and cement additives, and alternatives to natural aggregates. Content analysis of non-ferrous slag showed the concentration of metals such as Al and Cu ranging from 1 to 27%, indicating the necessity to recover the secondary metals by properly grinding slags and using economical concentration technologies. Based on the leaching test result of non-ferrous slag, rainfall blocking facilities need to be installed to prevent rainfall from flowing into storage sites for slags so that alternative materials can be safely managed.

The objective of this study is to develop a bridge maintenance system utilizing NFC(near field communication) technology and mobile devices to enhance maintenance efficiency. The system consist of web program and mobile application. Web program was developed using java programming language that is object-oriented, and mobile application was developed using hybrid app that runs inside of a native container and leverages the device’s web browser to display locally hosted HTML pages. In additionally, this system had been designed to improve system usability and on-site applicability for convenient GUI (graphic user interface) environment.

This study aims to establish complementary relationship among designer, builder, and maintenance manager by combining BIM(Building Information Modeling) technology with bridge safety diagnosis and maintenance to secure its effectiveness and systematization. To establish and maintain database by organizing quantities of data about existing case of safety diagnosis and maintenance, and develop the system to be used by practitioners.

국내의 지진 발생 추이가 증가세를 보이고 있으며, 이에 따라 시설물 피해를 주고 큰 인명 피해를 초래하는 지진재해에 대한 대비의 중요성이 대두되고 있다. 지진재해에 대비하기 위해서는 지진 또는 진동가속도에 대한 실시간 계측을 하는 것이 중요하다. 일본과 미국의 경우 중요 시설물에 대하여 이미 실시간 지진가속도계측을 시행하고 있으며 계측된 지진가속도데이터는 데이터베이스화되어 관리되고 있다. 이를 이용해 내진설계기준 개정시 또는 지진으로 인한 피해 예측시 활용하고 있다. 국내의 경우, 최근 지진재해대책법 및 시행규칙이 개정되어 공포 되었으며, 국민안전처에서 지진가속도계측자료 통합관리시스템을 구축해 나가고 있는 상황이다. 본 연구의 목적은 국민안전처 통합관리시스 템에 연계가 가능한 시설물 실시간 진동 감지 및 분석 시스템을 개발 하는 것이다. 이 시스템은 지진가속도계측데이터 모니터링 기능을 포함하 며, 또한 고속푸리에변환, 고유진동수 추출, 응답스펙트럼, 파워스펙트럼, 진도 표출, 시설물 건전도 평가 등 다양한 가속도데이터 분석 기능을 갖추고 있을 뿐만 아니라 국민안전처 지진가속도계측자료 시스템에 연계가 가능하도록 설계되었다. 개발된 시스템은 시설물의 안전관리 네트 워크 구축, 지진 또는 진동으로 인한 시설물의 피해에 대한 대비, 유지관리 비용의 최소화에 긍정적인 효과가 있을 것이라고 판단된다.

In this study, quartile control chart method is tried to apply to determine limit values of existing dams of K-water’s instrumentation data for dam safety, show asymmetric distributed data, and the example of application is presented. The determined limit values of concrete stress meter and concrete non-stress meter by Shewhart method and quartile method show that the determined limit values by Shewhart method indicate that the majority of instrumentation are on abnormal condition, although the measured values are normal behavior. But, in case of the result of quartile method has such an error. Like this, it is judged that the determination of the limit values of dam instrumentation, show asymmetric and abnormal distributed data, by the quartile method is appropriate. Therefor The quartile method is applied to the determination of limit values of existing dam instrumentation of K-water.

Defects of diversion tunnel have been analyzed by using the precise inspection for safety and diagnosis in 7 dams. Leakage from joint, crack, and material segregation is crucial damage in dam as well as crack, corrosion, and drainage system. Maintenances of diversion tunnel have been suggested with common and unique characteristics of defects.