• 한국가스학회지
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• 제13권3호
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• pp.1-6
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• 2009

최근 화학 산업이 발전함에 따라 고압설비가 널리 이용되고 있다. 이러한 고압 설비는 편리성과 함께 많은 위험을 내포하고 있다. 파열판 안전장치는 고압설비의 안전사고로부터 설비와 생명을 보호하는 장치이다. 파열판 안전장치는 홀더, 파열판, 버큠서포트로 구성되어져 있으며, 다양한 환경 조건에서 부식되거나 파괴되는 단점이 있다. 본 논문에서는 부식 저항성이 우수하여 파열판 안전장치의 소재로 많이 사용되고 있는 STS 316L stainless steel 소재를 이용해서 제작한 파열판 안전장치를 CATIA V5를 이용하여 3차원 모델링을 수행하고, 유한요소해석을 통하여 소재의 두께와 높이에 따라 파열판 안전장치의 파열에 영향을 미치는 요인을 분석하였다.

• 한국학교ㆍ지역보건교육학회지
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• 제8권2호
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• pp.97-108
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• 2007

Background & Objectives: Health management is performed at enterprises under the Industrial Safety and Health Act. At small and mid sized enterprises, the reality is that health management is poorly performed due to the shortage of resources, professional knowledge, and administrative capabilities, as well as the lack of recognition by company presidents, and generation difference. Purpose: The purpose of this study is to Provide basic materials to complement the future health management model by researching the extent of performing health-related tasks at small and mid sized enterprises and analyzing the related factors. Methods: The survey subjects were 130 small and mid sized enterprises nationwide which had received health management support from the Korean government. The data were collected using a systematic questionnaire at the companies from September 2005 to November 2005. The respondents were the Personnel for healthcare tasks. Results: The results indicate that the extent of performing health management tasks at the companies was significantly different in the working environment and task management field in terms of industry types and in the fields of the establishment of an industrial health system as well as working environments and task management in terms of regions. Also, a multiple regression analysis was performed step-by-step in order to research the factors that affect the execution of health management tasks at small and mid sized enterprises.

• 한국산업보건학회지
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• 제25권2호
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• pp.166-173
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• 2015

Objectives: The purpose of this study was to evaluate cobalt concentrations in airborne inhalable, total and respirable dust from manufacturing industries using cobalt. Methods: To compare cobalt concentrations, three types of dust samplers(a 37mm closed cassette sampler, Institute of Occupational Medicine(IOM) sampler, and Aluminum cyclone sampler) were used. The analysis of cobalt concentrations was conducted using AAs based on the NIOSH 7300 method. Results: The geometric mean of cobalt concentration in total dust was $1.47{\mu}g/m^3$, and the rate of excess of the Korean Occupational Exposure Limit(KOEL) was 10.0%. The geometric mean concentrations of cobalt in super alloy manufacturing industries were higher than those in plating industries, and molding operations showed higher exposure levels to cobalt than did other operations. Conclusions: The rate of cobalt concentration in inhalable dust from super alloy manufacturing industries exceeding the Workplace Exposure Limit(WEL) as recommended by the Health & Safety Executive(HSE) was 7.1%, which means proper work environmental management is required through wet work environments. Given that molding operations had higher cobalt concentrations, it is necessary to apply measures such as local exhaust for reducing airborne dust in cobalt manufacture industries.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.855-862
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• 2022

Environmental stressors considerably influence the health and safety of humans and must thus be continuously monitored to enhance the urban environments and associated safety. Environmental stressors typically act as stimuli and lead to behavioral changes that can be easily identified. These behavioral responses can thus be used as indicators to clarify people's perceptions of environmental stressors. Therefore, in this study, a framework for assessing environmental stressors based on human behavioral responses was developed. A preliminary experiment was conducted to investigate the feasibility of the framework. Human behavioral and physiological data were collected using wearable sensors, and a survey was performed to determine the psychological responses. Humans were noted to consistently exhibit changes in the movement and speed in the presence of physical environmental stressors, as physiological and psychological responses. The results demonstrated the potential of using behavioral responses as indicators of the human perceptions toward environmental stressors. The proposed framework can be used for urban environment monitoring to enhance the quality and safety.

• Structural Monitoring and Maintenance
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• 제10권2호
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• pp.107-116
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• 2023

The health condition of of deep water high pile foundation is vital to the safe operation of bridges. However, pier foundations are vulnerable to damage in deep water due to exposure to sea torrents and corrosive environments over an extended period. In this paper, combined with aninvestigation and analysis of the typical damage characteristics of main pier group pile foundations, we study the safety monitoring and real-time early warning technology of the deep water high pile foundations, we propose an early warning index item and early warning threshold of deep water high pile foundation by utilizing a numerical simulation analysis and referring to domestic and foreign standards and literature. First, we combine the characteristics of structures and draw on more mature evaluation theories and experience in civil engineering-related fields such as dam and bridge engineering. Then, we establish a scheme consisting of a Early Warning Index Systemand evaluation model based on the analytic hierarchy process and constant weight evaluation method and apply the research results to a project based on the Jiashao bridge in Zhejiang province, China. Finally, we verify the rationality and reliability of the Early Warning Index Systemof the Deep Water High Pile Foundations.

• 시스템엔지니어링학술지
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• 제16권1호
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• pp.68-77
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• 2020

The shipbuilding and offshore industry is a large and complex assembly industry, which causes many safety accidents. The major accidents in the shipbuilding and offshore industry workplaces are stenosis, falling objects, dust, fire, explosions, and gas poisoning. The accident by worker in this industry mainly has three factors: frequent movement, narrow work space, and increased use of subcontractors. To control these factors, it is necessary to monitor the worker's location and work status. In this paper, a worker location monitoring system using inaudible sound wave was designd that can be used in environments with many metal barriers. The process included deriving stakeholder requirements, transforming to system requirements, designing system architecture, and developing prototype. The prototype was validated by third-party testing agency. As a result, it satisfied the designed performance and verified its feasibility.

• KIEAE Journal
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• 제17권1호
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• pp.55-61
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• 2017

Purpose : As the necessity of reinforcement of infections management in medical facilities after MERS increased, Ministry of Health and Welfare promulgated the enforcement regulations of medical law on February 3, 2017. Its main objective is to improve patients' safety and medical-care quality through the establishment of isolation facilities from infectious diseases and the set-up of standards for In-patient and ICU facilities. The purpose of this study is necessarily to propose a standardized spatial composition model for ward modules by analyzing changing environments of in-patient facilities according to the strengthened medical law. Method: Theoretical studies will be undergone of Evidence-based Designs to improve patients' safety, medical quality, and domestic/overseas in-patient room guidelines. With reference to the status of 24 general hospitals over 500 beds, the spatial compositions of the in-patient rooms and the types of multi/single bed room modules will be analyzed. The directions of future in-patient room module changes through the study of the minimum ward module types and various ward types will be presented. Result: This paper will hopefully provide guidelines for hospitalization rooms that can be applied to the revised rules of medical law enforcement and provide a basis for a comprehensive study of patients' safety and efficient infection control as well.

• 한국건축시공학회지
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• 제7권3호
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• pp.115-122
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• 2007

As buildings become higher, larger, and more complex, safety issues for construction workers working at such environments become more important. We analyzed 83 critical accident cases reported to the KOSHA(Korea Occupational Safety & Health Agency) for construction cranes by types of cranes and by patterns of accidents and causes. There are more number of accidents related to mobile cranes than that related to tower cranes, but the numbers of dead were similar in both cases. The most dominant cause of crane accidents was "fall of materials". We also analyzed the cases of crane accidents using the FMEA(Failure Mode and Effect Analysis) in order to set up a priority for safety management and also to prioritize research and development items relating tower cranes. In the process, we tried to eliminate subjective indexes such as an expert group survey and use objective and quantitative indexes. As a result, it was found that critical crane accidents occurs most during the "lifting and translating" activity.

• 한국조경학회지
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• 제39권2호
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• pp.65-72
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• 2011

일상적인 걷기활동과 신체활동은 노인들이 건강한 삶을 유지하는데 필수적인 활동으로, 걷기활동을 지원하고 참여를 촉진할 수 있는 물리적 환경의 제공의 중요성이 점점 커지고 있다. 본 연구는 도시 노인의 걷기활동의 참여 실태를 파악하고, 노인들의 걷기운동 수행과 관련성이 있는 개인적, 물리적 환경요인을 파악하는 것을 목표로 하였다. 이를 위해 수도권 지역의 60세 이상 노인을 대상으로 한 심층면접을 통하여, 일주일 동안의 이동목적이나 운동목적의 걷기활동 참여빈도와 시간을 측정하였으며, 행동변화 단계모델을 바탕으로 보다 정확한 걷기운동 수행 현황을 고찰하였다. 또한 공원 접근성, 보행로 시설, 교통시설 등 물리적 환경에 대한 인식과 만족도 및 평소 걷기활동에 장애가 되는 물리적인 요인들을 조사하였다. 분석결과, 과반수가 넘는 노인들이 규칙적인 걷기운동을 실천하고 있었으며, 행동변화 단계에 있어서는 6개월 이상 걷기운동을 지속하는 유지단계의 노인들 비율도 높았다. 걷기 운동장소로 선호되고 있는 곳은 도보권 내의 공원이나 산책로, 아파트 단지 등이 많았으며, 유료시설의 체육시설이나 실내 운동기구 이용은 상대적으로 낮았다. 또한 걷기운동 빈도에 유의적인 영향을 미치는 물리적 환경 요인으로는 공원접근성, 교통안전, 신호등, 가로등이 있었으며, 소득이 상대적으로 적은 노인들은 걷기운동에 대한 선호도가 보다 높은 것으로 파악되었다. 노인들은 교통안전에 대한 만족도를 매우 낮게 평가하였고, 교통사고에 대한 우려가 걷기활동에 있어 큰 장애가 되고 있는 것으로 조사되어, 노인시설을 중심으로 한 안전한 노인보행환경 개선이 시급한 것으로 나타났다. 본 연구는 도시 노인들의 일상적인 걷기활동 지원 및 증진을 위한 근린환경의 제공, 노인들의 걷기활동 지원 프로그램 마련에 필요한 기초자료를 제공할 수 있을 것으로 판단된다.

• 보건교육건강증진학회지
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• 제35권5호
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• pp.1-16
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• 2018

Objectives: This study aimed to examine systems behavior of urban walking by analyzing a dynamic structure in Seoul, South Korea. Methods: As a systems thinking approach to urban walking and health promotion, we developed a Casual Loop Diagram based on literature review and expert consultation. The reviewed literature included: 1) qualitative studies that explores the experiences of urban walkers in Seoul; 2) a systematic review study on the built environmental factors related to walking; 3) policy research reports related to urban walking in Seoul. Results: The feedback structure for urban walking was related to the three urban environments (safety & walking environment, socioeconomic environment, and public transportation environment), and was characterized by a trade-off consisting of eight reinforcing loops and four balancing loops. Conclusions: The policies for a walkable city require multi-sectoral cooperation in order to change the causal loop structure related to the decline of walking. Therefore, it is necessary to establish legal and institutional conditions so that multi-sectoral and multidisciplinary approaches are possible.