• Title/Summary/Keyword: 배관 누출 탐지

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A Technology of Micro-leak Detection (미세 누출 탐지 기술)

  • Choi, Yourak;Lee, Jaecheol;Cho, Jaewan
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2021.07a
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    • pp.685-687
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    • 2021
  • 본 논문에서는 플랜트 배관의 기체 누출 탐지방안에 대하여 기술한다. 배관 누출 발생 시 배관 내부 압력과 누출부 크기의 조합에 따라 누출 초음파 발생 여부가 결정되는데, 누출 시 초음파가 발생하는 경우와 그렇지 않은 경우에 대하여 배관 누출을 탐지하는 방안과 보온재 배관의 누출탐지 방안에 대하여 설명한다. 또한 배관 파단을 상시감시하기 위한 대량의 무선센서 운용에 따른 대량 누출탐지신호의 실시간 처리를 위한 쿠버네티스 기반의 분산처리형 진단 시스템 구현 방안에 대하여 기술한다.

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가스정책(2) - 가스누출확인배관용밸브, 은폐배관 점검구 대체 가능

  • 대한설비건설협회
    • 월간 기계설비
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    • s.295
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    • pp.93-95
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    • 2015
  • 지난 2013년 7월 25일 도시가스사업법 시행규칙 개정에 따라 도시가스 은폐배관 설치 시 천정에 가스누출점검을 위한 점검구를 뚫거나 값비싼 다기능가스안전계량기를 설치해야 한다. 이에따라 수많은 민원이 발생하여 대한설비건설협회(이하 협회)는 실내 미관을 위해 점검구의 크기를 축소하고, 가스누출 점검을 위한 대체방법으로 다기능가스안전계량기 뿐만 아니라 가정에서 저렴하게 설치할 수 있는 가스누출확인배관용밸브 설치도 허용해 줄 것을 건의해 왔다. 협회 건의에 대해 가스기술기준위원회는 지난 1월 27일 질의회신을 통해 가스누출확인배관용밸브 설치 시 은폐배관의 가스누출이 탐지 가능하므로 가정 내에서 이 밸브를 설치할 경우 점검구를 뚫지 않아도 된다고 회신했다.

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Pipe Leak Detection System using Wireless Acoustic Sensor Module and Deep Auto-Encoder

  • Yeo, Doyeob;Lee, Giyoung;Lee, Jae-Cheol
    • Journal of the Korea Society of Computer and Information
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    • v.25 no.2
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    • pp.59-66
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    • 2020
  • In this paper, we propose a pipe leak detection system through data collection using low-power wireless acoustic sensor modules and data analysis using deep auto-encoder. Based on the Fourier transform, we propose a low-power wireless acoustic sensor module that reduces data traffic by reducing the amount of acoustic sensor data to about 1/800, and we design the system that is robust to noise generated in the audible frequency band using only 20kHz~100kHz frequency signals. In addition, the proposed system is designed using a deep auto-encoder to accurately detect pipe leaks even with a reduced amount of data. Numerical experiments show that the proposed pipe leak detection system has a high accuracy of 99.94% and Type-II error of 0% even in the environment where high frequency band noise is mixed.

The Development and Introduction of External Corrosion Direct Assessment Measures for Urban Gas Pipelines (외면부식 직접평가법 개발 및 국내 도입 연구)

  • Ryou, Young-Don;Lee, Jin-Han;Yoon, Yung-Ki;Lim, Ho-Seok
    • Journal of the Korean Institute of Gas
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    • v.18 no.5
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    • pp.12-19
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    • 2014
  • To minimize the risk of corrosion on buried pipeline and to maximize the efficiency of cathodic protection, various indirect inspection techniques have been used for decades. In the United States, 49 CFR has regulated the external corrosion direct assessment for buried pipelines. In Korea, there is no provision for external corrosion direct assessment but there is only, according to the KGS Code, provision that if the survey of the defects of buried pipeline and the leakage test for the pipe were conducted, it is deemed to leakage inspection. We, therefore, have suggested external corrosion direct assessment method appropriate to domestic status through the survey of the regulations and standards of UK and the USA and the investigation of domestic situation on coating damage detection method. The proposed external corrosion direct evaluation method was used as the basis when introducing the precision safety diagnosis regulation for the medium-pressure pipe in Korea.

Development of Methane Gas Leak Detector Using Mid-infrared Ray Sensors with $3.2\;{\mu}m$ ($3.2\;{\mu}m$ 중적외선 센서를 이용한 메탄가스누출검지기의 개발)

  • Park, Gyou-Tae;Lyu, Keun-Jun;Han, Sang-In;Oh, Jeong-Seok;Kim, Ji-Yoon;Ahn, Sang-Guk;Yoon, Myung-Seop;Kwon, Jeong-Rock
    • Journal of the Korean Institute of Gas
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    • v.12 no.2
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    • pp.48-52
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    • 2008
  • According to extremely industrial growth, gas facilities, equipments and chemical plants are gradually increased due to incremental demands of annual amount of gases. The safety management of gases, however, is still far from their requirements. Methane, the principal ingredient of natural gas, is inflammable and explosive and is much used in factories and houses. Therefore, these gas safety management is essential. So, we, with a program of the gas safety management, hope to develop the detection system of methane gas leak using mid-infrared ray LED and PD with $3.2\;{\mu}m$. The cryogenic cooling device is indispensible at laser but needless at LED driven on the room temperature if manufacturing optical sensor with $3.2\;{\mu}m$. It, consequently, is not only possible to implement for subminiature and portable type but also able to speedily detect methane of extremely small quantities because the $CH_4$ absorption intensity at $3.2\;{\mu}m$ is stronger than that at $1.67\;{\mu}m$. Our objective of research is to prevent gas leak accidents from occurring previously and to minimize the extent of damage from them.

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