• Smart Structures and Systems
• /
• 제30권6호
• /
• pp.649-659
• /
• 2022

Structural Health Monitoring (SHM) researchers have identified Augmented Reality (AR) as a new technology that can assist inspections. Post-seismic structural inspections are conducted to evaluate the safety level of the damaged structures. Quantification of nearby structural changes over short-term and long-term periods can provide building inspectors with information to improve their safety. This paper proposes a Time Machine Measure (TMM) application based on an Augmented Reality (AR) Head-Mounted-Device (HMD) platform. The primary function of TMM is to restore the saved meshes of a past environment and overlay them onto the real environment so that inspectors can intuitively measure dynamic structural deformation and other environmental movements. The proposed TMM application was verified by demo experiments simulating a real inspection environment.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
• /
• pp.312-313
• /
• 2018

As global climate change leaded to extensive natural disaster and radical deterioration of infrastructures, there was increased attentions for the evaluation of infrastructures. After the collapse of Seongsu Bridge in 1994, Korea has enacted the "Special act on safety and maintenance of facilities" and secured the safety of facilities using systematic and periodic safety inspections. However, current facility inspections are mainly performed by the physical defect and structural analysis, and do not properly consider the serviceability of infrastructure such as capacity of facility and user's satisfaction. Thus, the purpose of the study is to develop an evaluation criteria for serviceability of infrastructures and finally leading to the revision of "Special Act on safety and maintenance of facilities in rational manner.

• 대한안전경영과학회지
• /
• 제3권3호
• /
• pp.11-21
• /
• 2001

Domestic construction industry has considerable level of construction performance and technology thanks to the economic development and as the result of performing diverse oversea construction project. However, construction disasters have been steadily increasing, and do severe disasters at faster pace. Most of such disasters happen at small and small medium-sized construction fields, which contract size is less than 10 billion won. small and medium-sized construction fields are not obliged to designate a safety manager, and have limitations in engaging self-regulating disaster prevention activities due to reduced budget for safety facilities. For the small and medium-sized construction sites with less than 10 billion won, the Ministry of Labor has been carrying out mobile inspections of construction safety. However, the effect so far is insignificant and an improvement plan is required. Therefore, in the present thesis, we derive problems appearing in the current construction safety mobile inspection system, investigate and study systems in foreign countries, and suggest an efficient and effective plan to operate safety technology inspections. First of all, we establish a standard to select sites to be inspected that are high in construction risk and disaster occurrence probability In addition, we suggest a plan to take administrative and judiciary measures based on the total score for disaster factors considering the disaster occurrence probability and the illegal practices. Furthermore, a scheme to maximize the effect of disaster prevention is sought by building an organic cooperative system between the Ministry of Labor, Korea Occupational Safety ＆ Health Agency and other organizations specialized in instruction of construction disaster prevention. Finally, we induce a research conclusion that leads to self-regulating safety management through checking and instructing systematic management on mobile inspections.

• 한국정보전자통신기술학회논문지
• /
• 제13권6호
• /
• pp.530-538
• /
• 2020

옥외광고는 일정한 장소의 건축구조물의 외형에 고정되는 형태가 일반적이므로 건물 및 주변 환경과의 조화가 요구된다. 이러한 옥외광고물은 자연, 건축, 거리경관을 고려한 심미적 요소가 조화롭게 배치되어야 하며, 법적 규제로 인한 실행 제한이 많은 것이 현실이다. 옥외광고물의 안전도 검사는 옥외광고물의 노후화된 상태, 규격 및 설계도서와 일치여부 등을 판단하기 위해 시행하고 있는데, 노후화된 광고물의 경우 도시의 심미적 요소를 저해할 뿐만 아니라, 차도나 보행로로 떨어지는 사례 등이 발생하여 안전적 측면에서 주기적인 검사가 시행되고 있다. 그러나 현재의 안전도 검사는 건축물 입면의 높은 간판을 심사할 때 인사사고가 발생할 위험이 있으며, 건물의 입면에 고정된 옥외 광고의 구조물은 심도 있게 검사를 시행하여 내용을 파악하기가 어렵다. 이에 본 논문에서는 드론을 활용한 옥외광고물 안전 점검 체계를 제고하고자 하며, 나아가 안전 점검 주기, 유지보수, 간판 제거 등 시설점검 이력 관리 방안을 제시하고자 한다.

• 대한안전경영과학회지
• /
• 제25권3호
• /
• pp.55-62
• /
• 2023

Public institutions have a responsibility to ensure the safety of their employees and the public. One way to do this is to implement a systematic safety inspection system based on risk assessments and continuous improvements. This study developed a systematic safety inspection system for public institutions that are ordered construction projects. The proposed system in this study consists of a three-step process: (1) developing safety grade evaluation tables, (2) preparing and conducting safety inspections, and (3) evaluating and improving safety management grades. The first step is to develop safety grade evaluation tables by analysis and diagnosis of the construction site's work type, disaster statistics, and related laws. The second step is to conduct safety inspections using the developed evaluation tables. The third step is to determine the safety management grade based on the results of the safety inspection, and to improve risk factors found during the safety evaluation. The proposed system was implemented in highway construction projects carried out by public institutions. The results showed that the proposed system has two major effects: (1) reducing accident-related deaths and injuries, (2) improving safety management levels by continuous evaluation and improvement. The proposed system can be utilized in construction projects ordered by public institutions to improve the level of occupational safety and health.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2023년도 봄 학술논문 발표대회
• /
• pp.267-268
• /
• 2023

Out of an estimated 7 million buildings nationwide, approximately 38% of them have been standing for over 30 years, and this number is expected to continue to increase. Additionally, due to the Building Act, safety inspections will be mandatory for approximately 70,000 buildings annually, leading to an increase in demand for building safety inspections. However, the current building safety diagnosis heavily relies on manpower, making it difficult to diagnose locations that are hard to access, and requiring lengthy investigation periods. Therefore, this paper presents the basic research results of a non-contact concrete damage depth estimation technique using laser technology aimed at remote building safety diagnosis and shortening investigation periods.

• 한국가스학회:학술대회논문집
• /
• 한국가스학회 2005년도 추계학술발표회 논문집
• /
• pp.37-43
• /
• 2005

도시가스를 사용하고 있는 사용가구에 대한 설문조사 결과 10가구 당 7가구 꼴로 도시가스가 안전한 것으로 인식하고 있지만 이 중 $30\%$는 향후 가스 안전사고가 자신의 집에서 발생할 가능성이 있다고 인식하고 있어 도시가스이용이 상대적으로 안전하기는 하지만 여전히 사고의 위험성이 상존하고 있다는 것을 도시가스를 사용하는 가구 구성원들이 인식하고 있는 것으로 나타났다. 이러한 도시가스 소비자의 가스안전에 대한 인식은 연령, 성별, 소득수준 등과는 무관한 것으로 분석된 반면, 고학력자이며, 직, 간접적인 가스안전사고 경험이 있고, 가스안전점검요령을 미숙지하고 있는 사람일수록 도시가스사용의 안전성에 대한 인식이 상대적으로 낮게 나타났다. 한편, 대다수의 도시가스사용가구가 최소한의 가스안전점검방법을 알고 있는 반면, 단지 $60\%$만이 자율점검을 실시하고 있는 것으로 나타나 소비자가 자율적인 안전점검에 대해 매우 소홀히 하고 있음을 알 수 있다. 특히 자율점검을 실시하지 않는 이유로 대다수의 응답자가 "외부로부터 안전점검을 받기 때문에 자율점검의 필요성을 못느끼고 있다"라고 응답한 점을 감안할 때 소비자들의 외부에 대한 안전점검의 의존성향을 변화시키기 위해서는 도시가스사 직원의 정기 안전검사시 안전점검 외에도 자율점검의 필요성 및 방법 등에 대한 올바른 교육 및 적극적인 홍보활동이 필요하다.

• 자동차안전학회지
• /
• 제14권1호
• /
• pp.26-31
• /
• 2022

Changwon City has the second highest accident rate with 79.6 according to the city bus accident rate. In fact, 250,000 people use the city bus a day in Changwon, The number of accidents is increasing gradually. In addition, a recent fire accident occurred in the engine room of a city bus (CNG) in Changwon, which has gradually expanded the public's anxiety. In the case of business vehicles, the government conducts inspections with a short inspection cycle for the purpose of periodic safety inspections, etc., but it is not in the monitoring stage. In the case of city buses, the operation records are monitored using Digital Tacho Graph (DTG). As such, driving records, methods, etc. are continuously monitored, but inspections are conducted every six months to ascertain the safety and performance of automobiles. It is difficult to identify real-time information on automobile safety. Therefore, in this study, individual automobile management solutions are presented through machine learning techniques of inspection results based on driving records or habits by linking DTG data and Vehicle Inspection Management System (VIMS) data for city buses in Changwon from 2019 to 2020.

• 농업과학연구
• /
• 제21권1호
• /
• pp.28-36
• /
• 1994

식육자원으로서 야생조류인 꿩과 청둥오리고기의 식품안전성에 관하여 검토한 결과는 다음과 같다. 1. 꿩과 청둥오리의 소장, 맹장과 직장에 대한 식중독균 검사에서, Salmonella속균 등 본 실험에서 검사한 3종의 식중독균은 모두 검출되지 않았다. 2. 꿩과 청둥오리의 혈액, 분, 소화기관 및 흉강장기에 대한 기생충검사에서 기생충은 발견되지 않았다. 3. 꿩과 청둥오리의 도체 근육에 대한 디스크 간이법에 의한 항생물질의 잔류검사에서, 모든 시료는 음성반응을 보였다. 4. 꿩과 청둥오리의 근육 및 간에 대한 DDT, BHT 등 7종의 농약 잔류검사에서, 모든 시료는 음성반응을 보였다. 5. 꿩과 청둥오리의 간, 근육 및 혈액에 대한 Cd 등 4종의 독성 중금속 검사에서 그 잔류량은 허용기준 이하였다. 이상의 꿩과 청둥오리에 대한 식품 안전성 검사 결과, 이들의 고기가 인체에 미치는 직접적인 위험도는 매우 낮을 것으로 사료된다.

• 한국안전학회지
• /
• 제34권3호
• /
• pp.8-14
• /
• 2019

Many electrical socket-outlet fire accidents take place not only in homes but in the offices each year. The causes are mostly faulty constructions, managerial problems and carelessness. Construction and managerial flaws can be resolved by regular or special inspections, but carelessness is not solvable through inspections. Such carelessness can be related to the consumption capacity of electrical socket-outlets presently, the rated current of electrical socket-outlets is based on 16A. However, even at 16A, the heat generated in the insulator of an electrical socket-outlet varies due to such factors as part damage and environmental conditions of use. To explore this situation, the study conducted an experiment to analyze thermal relationship by applying 10A, 20A, and 30A currents. To secure reliability, the study employed thermal analysis simulation and compared the thermal relationship in the same current value. The experimental and simulation values were found to be similar and therefore, diverse current values were replaced with the simulation. At 30A, the temperature was found to rise to at least $169.9^{\circ}C$ which had worked as a sufficient amount of energy to bring the insulation aging of insulator.