• 비파괴검사학회지
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• 제35권6호
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• pp.421-428
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• 2015

An important trend in the sustainment of military aircraft is the transition from preventative maintenance to condition based maintenance (CBM). For CBM, it is essential that the actual system condition can be measured and the measured condition can be reliably extrapolated to a convenient moment in the future in order to facilitate the planning process while maintaining flight safety. Much research effort is currently being made for the development of technologies that enable CBM, including structural health monitoring (SHM) systems. Great progress has already been made in sensors, sensor networks, data acquisition, models and algorithms, data fusion/mining techniques, etc. However, the transition of these technologies into service is very slow. This is because business cases are difficult to define and the certification of the SHM systems is very challenging. This paper describes a possibility for fielding a SHM system on legacy military aircraft with a minimum amount of certification issues and with a good prospect of a positive return on investment. For appropriate areas in the airframe the application of SHM will reconcile the fail-safety and slow crack growth damage tolerance approaches that can be used for safeguarding the continuing airworthiness of these areas, combining the benefits of both approaches and eliminating the drawbacks.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1525-1538
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• 2008

Currently, it has been a fashion to include RAMS of rolling stock in the order for purchasing the rolling stock. However, it's only to suggest a qualitative value or an ideal target without giving or demonstrating actual RAMS target, with only demonstrating passive RAMS by the data provided by the manufacturer. In the case of KTX project of 100 cars of KTX-II contracted in June 2006, their target has been suggested from the previous RAMS application standard and it aimed to achieve the reliability level of equivalent high speed rolling stock. Afterward, as actual KTX-II RAMS Plan and RAMS Demonstration Plan has been prepared and approved, it has been the first problem to secure the reliability and safety in order to introduce the new high speed rolling stock(KTX-II) successfully and we actually tried to apply overseas RAMS standard, KTX samples, electric railcar MTRC and rolling stock samples. This Report was dealt world trends of Railway RAMS standard, KTX-II RAMS Specifications, the present condition of KTX-II RAMS performance and development a way of KTX-II RAMS, We hope the "KTX-II RAMS Application Standard for Safety of Passenger Transportation Service" is served as an opportunity for the basic research for establishing and demonstrating RAMS target of components or parts composing the rolling stock system.

• 한국재난정보학회 논문집
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• 제17권2호
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• pp.391-402
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• 2021

연구목적: 안전인증 생태계 주체별 의견 유형화를 통하여 제도 운영상의 취약점을 확인하고 미래 변동성에 대하여 안전인증제도가 빠른 회복력을 가질 수 있도록 개선방안을 제시하고자 한다. 연구방법: 문헌조사 및 자료 분석을 통해 국내·외 유사 안전인증 및 관련 사례와 국제 기준 및 국가 표준 현황 등을 확인하였으며, 안전인증 생태계의 이해관계자별로 실태조사를 실시하고 문제점 유형화 및 개선방안을 수립하였다. 연구결과: 안전인증대상기계등을 제조 또는 수입하거나 사용하는 사업장을 대상으로 안전인증 대상품에 대한 품질 만족도, 개발제조 및 사용과정에서의 장애요인, 안전인증 관련 개선사항 등 제도전반에 걸친 실태조사를 실시하고 제도 운영상의 문제점 및 취약점을 발굴 및 범주화하여 개선방향 수립 및 작동성 향상을 위한 세부 추진과제를 도출하였다. 결론: 안전인증제도의 선진화·국제화를 위해서는 본 연구를 통하여 도출된 세부 추진과제를 효율적으로 수행하여야 할 것이며, 더불어 안전인증 생태계의 변동성에 대한 회복력 강화를 위해서는 주체별 상호 관계 개선을 통하여 선순환 구조의 운영시스템 구축이 중요하다고 판단된다.

• International Journal of Naval Architecture and Ocean Engineering
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• 제4권2호
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• pp.141-150
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• 2012

Ship damage caused by maritime casualties leads to marine pollution and loss of life and property. To prevent serious damage from maritime casualties, several types of safety regulations are applied in ship design. Damage stability regulation is one of the most important safety issues. Designs of ships for long international voyages must comply with these regulations. Current regulations, however, do not consider the characteristics of the operating route of each ship and reflect only ship size and type of cargo. In this paper, a damage safety assessment was undertaken for a ship carrying radioactive waste in actual wave conditions. Damage cases for safety assessment were constructed on the basis of safety regulations and related research results. Hull form, internal arrangement, loading condition and damage condition were modeled for damage safety simulation. The safety simulation was performed and analyzed for 10 damage cases with various wave heights, frequency and angle of attack on an operating route. Based on evaluation results, a design alternative was generated, and it was also simulated. These results confirmed that damage safety analysis is highly important in the design stage in consideration of the operating route characteristics by simulation. Thus a ship designer can improve safety from damage in this manner.

• 한국화재소방학회논문지
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• 제31권1호
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• pp.116-123
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• 2017

본 논문은 아파트 화재에서 재실자의 피난안전성을 제고하기 위한 목적으로 수행되었다. 이를 위해 대전광역시 유성구에 위치한 183개 아파트 단지의 3,056개 피난계단 층을 대상으로 현장 조사를 실시하였으며, 입주민 183명을 상대로 소방안전교육경험, 피난계단에 대한 안전관리인식, 그리고 소방안전인식에 대한 설문조사하였다. 조사결과, 연구대상물 3,056개 피난계단 층 중 1,916층에 장애물이 방치되어 62.7% 장애물 형성율을 나타내었다. 소방안전교육 경험은 연구대상자의 83.10%가 있는 것으로 나타났다. 연구대상자의 피난계단에 대한 안전관리인식은 평균 $3.84{\pm}0.75%$를 보였으며, 소방안전인식은 평균 $3.49{\pm}0.61%$을 나타냈다. 결과적으로 연구대상자는 대부분 소방안전교육을 받았고, 피난계단의 안전관리에 대한 방법은 이해하고 있지만, 안전관리에 대한 행동의 실천은 낮은 것으로 나타났다. 본 연구결과를 바탕으로 한 정책적 제언은 피난계단의 안전관리에 대한 인식이 행동의 실천으로 이루어질 수 있도록 소방안전교육을 정기적으로 받을 수 있는 사회적 제도와 그 교육에서 피난계단의 관리에 대한 교육내용이 강조되어야 한다.

• 한국안전학회지
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• 제34권5호
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• pp.153-158
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• 2019

It is estimated that about 2,515 persons have been injured by conveyor for the past five years(2013 ~ 2017). Conveyors used in various industrial sites for transporting iron ore, coal, courier goods, etc., have various incidents such as a worker putting on or pulling a part of the body or work clothes on the driving part during maintenance. It is necessary for preventing similar accidents to conduct various researches. In order to propose the basis for revising laws and standards for the safety standards of the full cord switch to prevent conveyor accidents, this study compares Korea's Industrial Safety and Health Law (KISHL) with those of IEC, EN, Canada, and Australia. In addition, surveys of conveyor use plant and full cord switch domestic and foreign manufacturers was conducted. In this study, domestic and overseas related laws and technical standards compare and analyze to prevent conveyor accidents. In addition, we propose extension of safety certification for full code switch, establishment of safety inspection standard, and improvement of working method regulation through actual working condition investigation. It can be used as a basis for revising the occupational safety and health regulation and related notices, and thus contributing to enhancing the safe atmosphere of the conveyor business and improving the safety consciousness of the concerned persons.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2010년도 추계학술대회
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• pp.507-516
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• 2010

Product liability as a process has developed significantly in the United Kingdom and the United States of America. The safety of the product becomes one of the most important elements in modern corporate management. The rapid introduction of product liability has recently been a prevalent phenomenon, as global changes arising from rapid development in science and the economy have resulted in a highly interconnected world economy. This thesis was established, based on current literature and business consulting cases in the position of companies, and is one of the operating subjects in a system for legal responsibility in manufactured products.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 A
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• pp.118-120
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• 1996

We've been reported recently that increase of installing big power converting equipment which makes harmonics result in damage on transformer for incoming and load. Specially, harmonics that cause overheat and aging is severer in cast-resin transformer a kind of dr type than in oil one. The goal of this paper is to prove the process for aging of transformer that result from harmonics in according to both of theory and actual measurement on site. And we introduce diagnostic methods to estimate aging condition of cast-resin transformer in accordance with simulation.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집
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• pp.1793-1798
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• 2009

Railway accidents have caused tremendous casualties and loss of property. In order to reduce the rate of accidents, it is important for the railway operators to elevate their recognition and give effective training as a safety education and training. Through the previous study, we developed regulatory guidance for developing safety education and training program. Then, three educational technology specialists verified it primarily. In this paper, we investigated present condition for running education and training system of domestic railway through result of In-depth interview. And we verified actual reflection through result of Checklist. Finally, improved regulatory guidance for developing safety education and training program was suggested in this study.

• 대한안전경영과학회지
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• 제9권2호
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• pp.235-257
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• 2007

Concept about health is rapidly changed into 21C. thinking logic of customer about food is changed from just food to safety food by disposition of consumption about foodsafety. But government, manufacturer, distribution trader and seller which have different recognitions about foodsafety lose trust of customer. Because they did't focus on thinking changed of customer about foodsafety. Our thinking about rapidly changed food safety being intergrated with IT technology is helping to expand and supply into market. In this article, We'll study Traceability System about cattle and pig related to food. this system was developed in livestock market. In this study, we problems from these systems after studying present construction positions of these systems and purpose of this study is investigation of actual use condition. Also purpose of this study abstracts problems which will be developed and researched.