• 기술사
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• 제34권2호
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• pp.14-18
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• 2001

The primary cooling piping of HANARO is classified as safety class 3, seismic class 1 and quality class Q. This piping as safety related feature has been designed, manufactured and tested in accordance with ASME SEC. Ⅲ, DIV 1, Class 3. In October of 2000, the first step of the in-service inspection for this piping was carried out in accordance with ASME SEC. XI. This describes the results of the Inspection including the preparation of inservice inspection plan and inspection method. It is verified through the results that the safety related piping is maintained the mechanical and structural Integrities.

• 한국안전학회지
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• 제32권5호
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• pp.88-95
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• 2017

As the safety fields are expanding to a variety of industrial fields, safety technology has been developed by convergence between industrial safety fields such as mechanics, ergonomics, electronics, chemistry, construction, and information science. As the technology convergence is facilitating recently advanced safety technology, it is important to explore the trends of safety technology for understanding which industrial technologies have been integrated thus far. For studying the trends of technology, the patent is considered one of the useful sources that has provided the ample information of new technology. The patent has been also used to identify the patterns of technology convergence through various quantitative methods. In this respect, this study aims to identify the convergence patterns and fields of safety technology using association rule mining(ARM)-based patent co-classification(co-class) analysis. The patent co-class data is especially useful for constructing convergence network between technological fields. Through linkages between technological fields, the core and hub classes of convergence network are explored to provide insight into the fields of safety technology. As the representative method for analyzing patent co-class network, the ARM is used to find the likelihood of co-occurrence of patent classes and the ARM network is presented to visualize the convergence network of safety technology. As a result, we find three major convergence fields of safety technology: working safety, medical safety, and vehicle safety.

• 수산해양교육연구
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• 제28권6호
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• pp.1529-1548
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• 2016

The objective of this study is to explore an effect of class teaching method of utilizing a pictogram on understanding of safety terms by the Hearing Impaired students. For this objective, a class teaching utilizing a pictogram was performed by targeting 4 students (elementary school 6th graders)with auditory disability for app. 3 months during the period from July, 2015 to September and through repeated measurement, an effect of class teaching utilizing pictogram on their understanding of safety terms was analyzed. The result of this study is as follows. First, class teaching utilizing pictogram was effective for enhancing understanding of safety terms. Second, such teaching was effective for promoting interest in safety terms. Through these results, it could be concluded that such teaching method provided an opportunity of enhancing understanding of the students with auditory disability for safety terms. In addition, the result of this study implies that pictogram teaching method being designed to deliver the meaning of target easily and promptly becomes a major factor of exerting a positive influence on understanding of safety terms by the students with auditory disability.

• 한국방재안전학회논문집
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• 제10권2호
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• pp.43-47
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• 2017

지난 22년 동안 '시설물안전관리에 관한 특별법'에 의해 관리된 1, 2종 시설물의 안전사고는 전무 하지만, 나머지 시설물인 소규모 시설물들에 대해서는 체계적인 관리를 하지 못하고 있어 이 시 설물의 안전사고는 매년 증가하고 있다. 이에 정부에서는 소규모 시설물의 일부를 3종 시설물로 정하여 안전점검을 법제화하여 시행 예정이다. 이 논문에서는 3종 시설물 중 건축물에 대한 안전 관리 현황을 분석하고 이를 바탕으로 소규모 건축물에 대한 안전성 향상을 위한 방안을 제안하고 자 한다.

• 한국항공운항학회지
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• 제12권2호
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• pp.1-15
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• 2004

In this study, we analyze technical requirements for a 50m unmanned airship order to assure safety in the test flight operation. The 50m class unmanned airship developed by Airship Group in Korea Aerospace Research Institute(KARI). The 50m class unmanned airship was developed as a scale-down model of 200m class stratosphere unmanned airship. This study reviews specifications and characteristics of 50m class unmanned airship and develops Airworthiness Requirements on the basis of current effective Aviation Act, Airworthiness standards, and relevant international documents. The developed requirements can be applied to the safety assessment of the 200m class stratosphere unmanned airship.

• 대한예방한의학회지
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• 제20권1호
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• pp.125-144
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• 2016

Objectives : About 13% of the medicines used by traditional korean medicines(TKM), are called animal medicines and are derived from non-herbal sources such as animals and insects. However, the clinical use of these preparations from animal medicines is often based on tradition and belief, rather than on evidence of toxicity and efficacy. As a result, animal medicines containing toxin have caused serious problems from injecting patients with venom. Here, various venoms frequently used as TKM were reviewed in terms of their instinct toxity and tried to estimate their safety classification. Methods : The estimation of safety classification was based on human equivalent dose(HED)-based MOS (margin of safety) and clinical dose applied for patients. Results and Conclusions : Except that of snake venom due to no clinical dose, they were evaluated as class 3 for bee venom, class 4 for cantharidin, toxin from blister beetle, and class 1 for venom from scolopendrid. In conclusion, animal medicines showed a wide range of safety classification from class 1 to class 4. This wide range is estimated to result from extremely limited applications of each venom for patients because of their strong toxicity. However, it should be cautious for application in clinics since animal medicines can produce anaphylactic reactions particularly after veinous administration even with a tiny amount of venom.

• Nuclear Engineering and Technology
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• 제54권10호
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• pp.3595-3603
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• 2022

Nuclear safety-class DCS is used for nuclear reactor protection function, which is one of the key facilities to ensure nuclear power plant safety, the maintenance for DCS to keep system in a high reliability is significant. In this paper, Nuclear safety-class DCS system developed by the Nuclear Power Institute of China is investigated, the model of reliability estimation considering nuclear power plant emergency trip control process is carried out using Markov transfer process. According to the System-Subgroup-Module hierarchical iteration calculation, the evolution curve of failure probability is established, and the preventive maintenance optimization strategy is constructed combining reliability numerical calculation and periodic overhaul interval of nuclear power plant, which could provide a quantitative basis for the maintenance decision of DCS system.

• 한국화재소방학회논문지
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• 제23권2호
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• pp.67-77
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• 2009

본 연구에서는 어린이 안전교육 분야 중에서 소방안전교육을 중점적으로 다루고자 한다. 이에 먼저 소방안전교육의 이론적 배경을 고찰하였고, 초등학교 안전사고현황과 사례를 분석하였으며, 현재 경기도 고양소방서에서 실시하고 있는 초등학교 소방과학교실을 중심으로 소방과학교실의 교육개요 및 현황, 교육 목적 및 내용, 그리고 소방과학교실에 참여한 초등학생들과 담당교사를 대상으로 설문지를 통한 만족도 조사를 실시하였다. 이러한 연구를 바탕으로 향후 화학이나 물리의 과학에 기반을 두고 있는 소방관련 화학 실험을 일반 및 청소년에게도 보급하여 자연스러운 소방교육 및 홍보 관련뿐만 아니라 학습과 소방상식을 동시에 직접 체험하는 즐거움(fun)과 놀라움(surprise)이 있는 프로그램으로 새로운 소방교육 홍보영역을 개발함으로서 우리나라 초등학교 소방안전교육의 활성화 방안에 관하여 대안을 제시하고자 하였다.

• 한국콘텐츠학회논문지
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• 제3권2호
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• pp.39-45
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• 2003

자바의 동적인 클래스 로딩은 자바 플랫폼에서 실행시간에 소프트웨어 컴포넌트를 동적으로 로딩하기 위한 강력한 메커니즘이다. 다른 시스템에서도 동적 로딩과 링킹을 제공하지만 지연 로딩, 타입안전 링크, 사용자 정의 로딩정책, 다중 이름 공간 등은 자바가 가진 중요한 특징들이다. 클래스 로딩에서 핵심은 타입 안전을 보장하는 것이다. 타입 안전은 자바 보안에서 아주 중요한 부분을 차지한다. 하지만 자바 가상 머신에서 타입 안전에 대한 메커니즘은 매우 복잡하고, 접근이 명확하지 않아서 지금 까지 많은 버그가 발생하여 타입 안전에 문제가 되었다. 본 논문은 자바 가상 머신에서 동적인 클래스 로더의 동작을 분석하고, 연산적 의미론(operational semantics)으로 추상화하고 현재 로드되어진 클래스와 추가된 제한 등을 이용하여 이전에 제시되었던 타입 안전에 대한 문제를 분석한다.

• 한국안전학회지
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• 제38권5호
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• pp.15-26
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• 2023

The relationship between the knowledge, attitude, and practice of the person in charge of designating a Class III facility was analyzed to improve its practice. As a field of knowledge, system knowledge and technical knowledge were considered, and attitudes were divided into cognitive, affective, and behavioral attitudes. A knowledge, attitude, and practice (KAP) survey was conducted, and the relationship among them was analyzed through correlation and regression analyses. The factors affecting the level of practice in designating the Class III facility were technical knowledge in the field of knowledge and cognitive and behavioral attitudes in the field of attitudes. Cognitive and behavioral attitudes were the two factors that most influenced the practice of designating a Class III facility. It is thought that the higher the level of cognitive and behavioral attitudes, the greater the ability to practice designating the Class III facility. The general characteristics of respondents influencing cognitive and behavioral attitudes were analyzed by safety inspection.