• Journal of Electrical Engineering and Technology
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• 제12권5호
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• pp.2079-2087
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• 2017

As the number of tall buildings is increasing, the high-speed lift is necessary in the modern world. Therefore, the further considerations for associated safety devices of lifts were required by the International Standards. In order to stop the moving of cage and keep it, the lifts have to be provided with means that can detect the unintended car movement. Therefore, the International Standard Safety Rules for the construction and installation of lifts had been revised. This paper describes the operation principles of the Rope Brake to fit the Unintended Car Movement Protection (UCMP) means required by the International Standards. This paper confirmed that the performance of these devices was suitable in the scope of the safety standards. This paper also analyzed that the shocks on working of these devices in a car would be dangerous to each passenger differently. Thus, this paper proposes a new design that the circuit diagram of the Unintended Car Movement Protection systems should be improved from the existing design to solve these internal shock problems. So, it is expected to protect passengers from the internal shocks by working of Rope Brake due to irrelevant factors.

• 한국안전학회지
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• 제27권5호
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• pp.1-8
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• 2012

The purpose of this study were to evaluate the dynamic characteristics of the portable slipmeters with respect to actual slipping and to compare their output with those of force platform. The selected slipmeters were commonly used devices for slipperiness measurement in situ floors. Their output quantity represented force (BOT-3000), loss of energy(British pendulum striker) and angle of inclination(English XL). The validity of these devices was studied with respect to actual slipping using a force platform. The precision of these devices was also evaluated with force platform. Based on dynamics of human subject behavior when slipping during normal walking, the all devices tested in this study showed poor performances: low built up ratio, low normal pressure, and long contact time prior to slip. Nevertheless, their results reasonably correlated with those calculated from the ground reaction forces generated by the operation of the selected slipmeters on the force platform although the absolute values of COF from these three devices could be quite different. Also the results showed good repeatability under the some test conditions.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2006년도 춘계공동학술대회
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• pp.513-523
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• 2006

This paper is to introduce guidelines for risk management and analysis. International tandards such as IEC 60300-3-9, IEC 61511-3, ISO 14971-1 and ISO/IEC Guide 73 are considered. This study is to discuss risk analysis of technological systems, and guidelines in the application of hazard and risk analysis for functional safety instrumented system, and risk management of medical devices, and guidelines for use in risk management standards.

• 대한안전경영과학회지
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• 제3권3호
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• pp.23-32
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• 2001

In the era of digital technology, display device is the one of the important interface tool to communicate and transmit the information. Among the various display devices, CRT is the most popular one. Even though the CRT has many advantages comparing to other devices, it is faced to overcome its a few disadvantages especially in volume, shape and price, etc, In this paper, we try to show the development strategy of CRT corresponding with flat displays in the view point of ergonomics.

• 재활복지공학회논문지
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• 제11권4호
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• pp.287-297
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• 2017

본 연구는 의료기기 안전성에 관한 의료인들의 인식(지식, 태도)과 행동에 관한 기초현황을 파악하여 보고, 직종 간 차이를 평가해보기 위한 탐색적 조사연구이다. 인천광역시에 소재한 900병상 규모의 상급종합병원을 대상으로 설문지를 배포하여 220명의 응답 자료를 분석에 사용하였다. 연구결과, 연구대상 의료인들은 대체적으로 의료기기 종류에 따른 잠재적 위험성에 대한 인식이 갖춰져 있고, 의료기기 안전성 교육의 필요성을 느끼고 있었다. 또한 의료진들의 직종 간 의료기기 안전성에 관한 인식의 차이를 살펴봤을 때, 등급 높은 의료기기를 주로 사용하지만 의료기기 안전에 관한 인식이 가장 낮은 전공의를 대상으로 하는 의료기기 안전교육의 필요성이 크다는 것을 알 수 있었다. 향후 전국규모의 연구를 통하여 자료의 질을 향상하고 결과의 수준을 높이며, 이를 바탕으로 의료기기 안전성 관리에 있어 정책적, 교육적 기반으로 활용할 필요가 있다.

• 한국안전학회지
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• 제15권4호
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• pp.62-68
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• 2000

Static electricity in electronics manufacturing plants causes the economic loss, yet it is one of the least understood and least recognized effects haunting the industry today. Today's challenge in semiconductor devices is to achieve greater functional density pattern and to miniaturize electronic systems of being more fragile by electrostatic discharges(ESD) phenomena. As the use of automatic handling equipment for static-sensitive semiconductor components is rapidly increased, most manufacturers need to be more alert to the problem of ESD. One of the most common causes of electrostatic damage is the direct transfer of electrostatic charge from the human body or a charged material to the static-sensitive devices. To evaluate the ESD hazards by charged human body and devices, in this paper, characteristics of electrostatic attenuation in domestic semiconductor devices is investigated and the voltage to cause electronic component failures is investigated by field-induced charged device model(FCDM) tester. The FCDM simulator provides a fast and inexpensive test that faithfully represents ESD hazards in plants. Also the results obtained in this paper can be used for the prevention of semiconductor failure from ESD hazards.

• Medical Lasers
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• 제9권1호
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• pp.34-38
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• 2020

Recently, various lasers and energy-based devices (EBDs) have been widely used in aesthetic procedures. Although using lasers and energy-based aesthetic procedures presents a potential risk to doctors, nurses, and patients, aesthetic procedures tend to be performed without the necessary precautions. For injury prevention, it is essential to follow safety rules and be aware of potential accidents. Furthermore, it is important to understand the basic principles of the devices, including the different optical and electrical properties. Acquiring the exact knowledge to control a device is important for two reasons; to maintain a safer operating environment and prolong the lifespan of expensive devices. This review briefly summarizes the knowledge needed for better and safer aesthetic procedures and the proper control of aesthetic devices.

• 한국임상수의학회지
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• 제35권1호
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• pp.1-6
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• 2018

This study reviewed the regulatory safety management system for prevention of side effects of veterinary medical devices in Korea based on data obtained through analyses of those medical devices. In order to ensure the safety of medical devices, Ministry of Food and Drug Safety has established the management system include licensing, test inspection (134 designated clinical trial agencies) and post management. In addition, it was introduce the good manufacture practice (GMP) certification system and device tracking requirements. In contrast, it is necessary to establish regulations for side effects report and awareness on veterinary medical devices in Korea. The center for veterinary medicine of FDA in the United States has been operated side effects reporting system of veterinary medical devices from user, manufactures and distributor. Due to increase the use of various kinds of veterinary medical devices for animals, it should be required to improve regulation related to the licensing procedures, GMP system, and the side effects reporting system in our country.

• 한국가스학회지
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• 제25권6호
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• pp.92-97
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• 2021

2021년 2월 '고압가스 안전관리법 시행규칙' 개정에 따라 2021년 8월27일부터 수소자동차 충전소에 설치한 가스누출검지경보장치, 긴급차단장치 및 화염검지기 등 안전장치 작동상태를 실시간으로 한국가스안전공사에서 관리하는 전산시스템으로 전송하여 운영하고 있다. 모니터링 시스템 구축결과와 함께 그동안 발생한 이상신호 통계분석 결과를 공유하여 수소충전소 안전관리에 활용토록 하고, 향후 안전관리 방향을 모색하고자 한다.

• 대한한의학회지
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• 제43권3호
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• pp.150-163
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• 2022

Objectives: This research aimed to develop a guideline for evaluating safety and performance of electronic warm-acupuncture apparatus. With the development of medical devices like electronic warm-acupuncture apparatus with improved performance, convenience and safety measures compared to traditional warm-acupuncture needling, safety and performance guideline is a necessity. Methods: By referring to existing standards and guidelines of other electronic devices for Korean medicine with heating function, guideline for safety and performance assessment of electronic warm-acupuncture apparatus was drafted Results: The guideline, presents explanation for adequate temperature and settings of the apparatus, and safety measurements providing against thermal runaway situations along with guidelines for the manual. Guideline for detailed test method for the performance of the apparatus such as accuracy of temperature increase and the timer, and safety unit was also provided. The test items and suggested test methods for the requirements of biological, electrical and electromagnetic safety were referred to Korean approval documents of ministry of Food and Drug Safety. Conclusion: We proposed the relevant items to verify performance and safety of warm-acupuncture apparatus to assure patient safety and improve the quality of currently developing devices for application in clinical field.