• 제목/요약/키워드: standards for installation

검색결과 473건 처리시간 0.022초

송전계통 고조파 방출 한계 평가 소프트웨어 (Assessment Software of Hormonic Emission Limits for Transmission System)

  • 왕용필;정종원;김세동;곽노홍;전영수;박상호
    • 조명전기설비학회논문지
    • /
    • 제21권10호
    • /
    • pp.134-140
    • /
    • 2007
  • 최근 전력기기 및 전력시스템 기준이 수적인 면과 복잡성에 있어 증가되고 있다. 이에 부하의 왜곡에서 고조파 방출 한계를 평가하기 위한 우리나라 송전계통 기준을 소개하였다. 시간적 제약이 증가하는 조건아래 전력회사 실무자들은 빠르게 문제를 풀기 위하여 소프트웨어로 구성하기가 매우 복잡하다. 따라서 본 논문에서는 마이크로소프트 엑셀을 이용하여 실무자들이 실제적인 상황에서 이러한 기준을 즉시 적용할 수 있도록 하기 위한 방법을 표현하였다.

A Study on the Play Space of Residential Complexes for Children in Hefei, China

  • Lee, Keon-Ha;Kim, Young-Eun
    • Architectural research
    • /
    • 제14권2호
    • /
    • pp.57-65
    • /
    • 2012
  • This study was focused on the new town residential complex in suburban Hefei, China, which was carried out a survey on the present conditions of children's play space. The residential complexes and play spaces in Hefei, regardless of installation, the standards for the installation of play facilities were not provided legally, and the types of installation of the play facilities also were not standardized. For the play space in residential complexes in China to carry out original functions under the condition and become a place of everybody's activities not just for children, the following should be improved:(1) There is no provision and standard for the size of play space, so the standards for installation of play space with safety like Korea, Japan and the US are necessary. (2) The location of the play space should be able to guarantee maximum play activities to children, and the independence of the space should be secured by putting it in a place far from a footpath or pass way. (3) Since children's play space has different properties from those of green space and resting spaces, separate environmental planning is necessary.

영상화재감지기 시험과 설치기준에 관한 연구 (A Study on the Test and Installation Standards of the Video Fire Detector)

  • 이정현;백동현
    • 한국화재소방학회논문지
    • /
    • 제30권4호
    • /
    • pp.1-5
    • /
    • 2016
  • 본 논문은 영상화재감지기(Video Fire Detector)의 시험 및 설치기준에 관한 연구로서 FM Approvals, UL, ISO7240 및 NFPA 72 기준들을 서로 비교분석하여 국가화재안전기준 203 (NFSC 203)에 반영되어야 할 기준들을 제안하였다. 영상화재감지기의 시험과 관계된 FM Approvals 기준에는 연기형, 불꽃형으로 분류되고 비화재보시험이 있었으나 UL 기준에는 연기형만 제시되어 있었다. 외국 기준인 ISO 7240에서는 화재현상 검출유형 등 6가지를, NFPA 72에서는 화재현상 검출유형 등 3가지를 조사하였다. CCTV 설치 표준공법에서는 영상화재감지기의 설치기준에 필요한 항목이 15가지가 있었으며 설치방법에 따라 각 분야별 기준이 제시되어 있었다. 영상화재감지기 적용을 위해서는 감지기 시험항목 중 용어의 정의, 감지기의 구분, 구조 및 기능에 관련항목을 삽입하고 감도조정, 비화재보방지, 주위온도시험, 유효감지거리 및 감도와 시야각, 노화시험, 살수시험, 내화시험의 7개 항목의 적용이 필요하다. 현장 설치를 위해서는 국가화재안전기준 203 (NFSC 203)에 작동환경 및 조도기준을 설정하고 음향장치, 표시등의 설치거리 등의 기준을 삽입하여야 한다.

고소 작업용 섬유로프의 고정 매듭법에 따른 강도 변화의 해석 및 실험적 연구 (Analysis and Experimental Study of Strength Change according to Fixed Knot Method of Fiber Rope for High Altitude Work)

  • 송상민;김민섭;신대용;임사혁;권오헌;박우림
    • 한국안전학회지
    • /
    • 제37권3호
    • /
    • pp.1-8
    • /
    • 2022
  • Workplace accidents are common while working at elevations. Thus, various safety measures such as safety handrails and horizontal safety nets are implemented to prevent falls. The minimum safety measure is the lifeline installation. However, because its standards have not been clearly established, it is often misused, resulting in inappropriate knot methods that increase the chance of accidents while working at elevations. Therefore, clarifying the appropriate usage methods or criteria for the various lifelines is required in the field. This study proposed an appropriate installation method by experimentally and numerically evaluating the change in strength according to the fixed knot lifeline method. In addition, three knot methods were specified for each material. The results obtained are expected to contribute to lessening falls through the establishment of lifeline installation standards and the development of appropriate parts.

UAM 수직이착륙장(Vertiport)의 장애물제한표면 적용 기준에 대한 연구 (A Study on the Criteria for Applying the Obstacle Limitation Surface of the UAM Vertiport)

  • 유태정
    • 한국항공운항학회지
    • /
    • 제31권1호
    • /
    • pp.18-25
    • /
    • 2023
  • In recent years, UAM (Urban Air Mobility) has emerged as a solution to these urbanization problems, and many related reports and diverse prospects have been reported. UAM flights are planned to take off and land at a Vertiport located in the city center and fly along a pre-established corridor. In order for UAM to operate safely in the city center, it must ensure a safe flight path that avoids the buildings in the city center and many surrounding obstacles. Therefore, in this study, we compared and examined the installation standards of the obstacle limitation surface necessary for UAM to take off and land safely at the Vertiport. First, we analyzed the helicopter obstacle limitation surfaces in Japan and overseas, and the UAM Vertiport installation standards and obstacle limitation surface application standards recently announced at the FAA and EASA. It identified differences and similarities between heliport and Vertiport, and considered improvements to domestic helicopter obstacle limitation surfaces and criteria that could meet FAA and EASA standards.

변전소의 AC/DC 겸용 비상 및 복구 등에 관한 연구 (A Study on the Emergency and Recovery AC/DC Combination Lamps in the Electric Substations)

  • 박준열;안윤기;김종수;신혜영
    • 조명전기설비학회논문지
    • /
    • 제24권6호
    • /
    • pp.27-34
    • /
    • 2010
  • 본 연구는 변전소(사무실) 비상 및 복구등 설비환경 개선차원으로 실시하였다. 기존 비상등의 낮은 조도로 인해 발생하는 문제점을 해결하기 위해 AC/DC 겸용 형광등 안정기 및 스위치를 연구하였다. 또한 조도기준을 상시등의 5~10[%]가 아닌 한국산업규격 조도기준(KS A 3011)에 따른 원자력발전소 조도기준과 안전조명 조도기준을 참고로 변전소 각 실별 조도기준을 제안하였다. 마지막으로 본 연구에서 제안한 내용의 타당성을 검토하기 위해 실험을 하였다. 그 결과 축전지 용량을 증가시키지 않으면서도 비상 및 복구등의 조도를 높일 수 있었다.

출입문 측면 활동공간 설치기준 개선에 관한 연구 (A Study on Improvement of the Standards for the Manoeuvring space at Doors)

  • 신동홍;박광재
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
    • /
    • 제25권4호
    • /
    • pp.71-79
    • /
    • 2019
  • Purpose: The manoeuvring space at doors must be secured for users of walking aids, wheelchair users, stroller users, luggage carriers, etc., so clear criteria must be established. The korean standards for the manoeuvring space at doors need to be improved to present clear criteria depending on the type of entrance and the direction of opening and closing. Method: Korean standard, International Standard(ISO 21542, 2011), German Standard(DIN 18040-1, 2010), Austrian Standard(OENORM B 1600, 2017) and Swiss Standard(Norm SIA 500, 2009) were investigated and analyzed. A comprehensive improvement of the criteria for the manoeuvring space at doors is proposed. Results: The manoeuvring space at doors, which is essential for the disabled to use the door, shall be installed with a comprehensive consideration of the width of doors, the Circulation space, the direction of access, and the method of opening and closing of the door. Korean standards, such as the width of doors, the Circulation space, and the manoeuvring space at doors, are different from international and international standards, which require improvement of standards. The criteria for the manoeuvring space at doors shall be clearly improved so as not to be misinterpreted during the installation of doors and the BF-certification. Implication: The criteria for the installation of doors shall be presented as a comprehensive alternative through continued study of details. In addition, improvements in standards that reflect changes in international standards should be made.