• Title/Summary/Keyword: 포항

Search Result 1,716, Processing Time 0.029 seconds

포항제철소 냉연 조질 정정 Line 전산화에 관한 연구

  • 원상철;김상우
    • ICROS
    • /
    • v.2 no.2
    • /
    • pp.3-9
    • /
    • 1996
  • 본 논문에서는 자동화 및 전산화가 부족한 포항제철소 내의 기기 중 냉연공장의 #2RCL공정을 대상으로 하여 실제 포항제철의 전산망 구조를 따르는 시스템을 구성하여 보았다. 또한 실험에서는 현재 포항제철소에서 추진 중인 EIC통합안에서 제시하고 있는 VMEbus를 기반으로 하여 하부의 조업 데이타를 수집하는 시스템을 구축하여 보았다. 이러한 시스템의 구성은 향후 EIC통합안의 표준에 따르는 공정 전산망을 미리 실현해 봄으로써 차후 실제 전산망 구축 시에 필요한 기초적인 데이타로서 사용이 가능하리라 사료된다.

  • PDF

Security and Safety Assessment of the Small-scale Offshore CO2 Storage Demonstration Project in the Pohang Basin (포항분지 해상 중소규모 CO2 지중저장 실증연구 안전성 평가)

  • Kwon, Yi Kyun;Chang, Chandong;Shinn, Youngjae
    • The Journal of Engineering Geology
    • /
    • v.28 no.2
    • /
    • pp.217-246
    • /
    • 2018
  • During the selection and characterization of target formations in the Small-scale Offshore $CO_2$ Storage Demonstration Project in the Pohang Basin, we have carefully investigated the possibility of induced earthquakes and leakage of $CO_2$ during the injection, and have designed the storage processes to minimize these effects. However, people in Pohang city have a great concern on $CO_2$-injection-intrigued seismicity, since they have greatly suffered from the 5.4 magnitude earthquake on Nov. 15, 2017. The research team of the project performed an extensive self-investigation on the safety issues, especially on the possible $CO_2$ leakage from the target formation and induced earthquakes. The target formation is 10 km apart from the epicenter of the Pohang earthquake and the depth is also quite shallow, only 750 to 800 m from the sea bottom. The project performed a pilot injection in the target formation from Jan. 12 to Mar. 12, 2017, which implies that there are no direct correlation of the Pohang earthquake on Nov. 15, 2017. In addition, the $CO_2$ injection of the storage project does not fracture rock formations, instead, the supercritical $CO_2$ fluid replaces formation water in the pore space gradually. The self-investigation results show that there is almost no chance for the injection to induce significant earthquakes unless injection lasts for a very long time to build a very high pore pressure, which can be easily monitored. The amount of injected $CO_2$ in the project was around 100 metric-tonne that is irrelevant to the Pohang earthquake. The investigation result on long-term safety also shows that the induced earthquakes or the reactivation of existing faults can be prevented successfully when the injection pressure is controlled not to demage cap-rock formation nor exceed Coulomb stresses of existing faults. The project has been performing extensive studies on critical stress for fracturing neighboring formations, reactivation stress of existing faults, well-completion processes to minimize possible leakage, transport/leakage monitoring of injected $CO_2$, and operation procedures for ensuring the storage safety. These extensive studies showed that there will be little chance in $CO_2$ leakage that affects human life. In conclusion, the Small-scale Offshore $CO_2$ Storage Demonstration Project in the Pohang Basin would not cause any induced earthquakes nor signifiant $CO_2$ leakage that people can sense. The research team will give every effort to secure the safety of the storage site.

포항항 스웰 개선대책 시설물 해상교통안전 진단 사례

  • Gang, Jeong-Gu;Yun, Su-Won
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • 2012.06a
    • /
    • pp.338-340
    • /
    • 2012
  • 항만의 시설물을 개선함에 있어서 해상교통안전진단이 이루어지고 있으며 포항항 스웰개선대책 시설물 건설 관련된 해상교통안전진단 사례 소개를 통하여 도출된 문제점에 대한 해결방안을 제시하였다.

  • PDF

이달의 과학자 - 포항제철(주) 김종진 사장

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
    • /
    • v.29 no.7 s.326
    • /
    • pp.80-81
    • /
    • 1996
  • 68년 포항제철 초기요원으로 입사하여 열간압연 조업기술을 최초로 적용, 열연제품이 세계 최고의 경쟁력을 확보하는데 중추적 역할을 한 포항제철 김종진사장. 김사장은 첨단 건축기술과 정보 네트워크가 결합된 첨단 인텔리전트빌딩인 포스코센터 건립을 주도하여 우리나라 건축사의 새 장을 열기도 했다.

  • PDF

뉴스의 인물-포항가속기연구소장 이 동녕 박사

  • Min, Yeong-Gi
    • The Science & Technology
    • /
    • v.28 no.7 s.314
    • /
    • pp.31-34
    • /
    • 1995
  • 우리나라 최초로 시설된 포항방사광가속기는 1988년 착수하여 6년만인 작년말에 준공되었다. B일본에도 없는 제3세대 최신형으로 1천5백억원을 투입한 방사광가속기가 완공되기까지는 6년동안 심혈을 기울여 전 과정을 진두지휘한 포항공대 이동녕 박사의 숨결이 담겨있다. 방사광가속기 준공의 산파역인 이동영 박사에게 앞으로의 설계를 들어보았다.

  • PDF

Deformation History of the Pohang Basin in the Heunghae Area, Pohang and Consideration on Characteristics of Coseismic Ground Deformations of the 2017 Pohang Earthquake (Mw 5.4), Korea (포항 흥해지역에서 포항분지의 변형작용사와 2017 포항지진(Mw 5.4) 동시성 지표변형 특성 고찰)

  • Ji-Hoon, Kang
    • Korean Journal of Mineralogy and Petrology
    • /
    • v.35 no.4
    • /
    • pp.485-505
    • /
    • 2022
  • On November 15, 2017, a Mw 5.4 Pohang Earthquake occurred at about 4 km hypocenter in the Heunghae area, and caused great damage to Pohang city, Korea. In the Heunghae area, which is the central part of the Pohang Basin, the Cretaceous Gyeongsang Supergroup and the Late Cretaceous to Early Paleogene Bulguksa igneous rocks as basement rocks and the Neogene Yeonil Group as the fillings of the Pohang Basin, are distributed. In this paper, structural and geological researches on the crustal deformations (folds, faults, joints) in the Pohang Basin and the coseismic ground deformations (sand volcanoes, ground cracks, pup-up structures) of Pohang Earthquake were carried out, and the deformation history of the Pohang Basin and characteristics of the coseismic ground deformations were considered. The crustal deformations were formed through at least five deformation stages before the Quaternary faulting: forming stages of the normal-slip (Gokgang fault) faults which strike (N)NE and dip at high angles, and the high-angle joints of E-W trend regionally recognized in Yeonil Group and the faults (sub)parallel to them, and the conjugate normal-slip faults (Heunghae fault and Hyeongsan fault) which strike E-W and dip at middle or low angles and the accompanying E-W folds, and the conjugate strike-slip faults dipped at high angles in which the (N)NW and E-W (NE) striking fault sets show the (reverse) sinistral and dextral strike-slips, respectively, and the conjugate reverse-slip faults in which the NNE and NNW striking fault sets dip at middle angles and the accompanying N-S folds. Sand volcanoes often exhibit linear arrangements (sub)parallel to ground cracks in the coseismic ground deformations. The N-S or (N)NE trending pop-up structures and ground cracks and E-W or (W)NW trending ground were formed by the reverse-slip movement of the earthquake source fault and the accompanying buckling folding of its hanging wall due to the maximum horizontal stress of the Pohang Earthquake source. These structural activities occurred extensively in the Heunghae area, which is at the hanging wall of the earthquake source fault, and caused enormous property damages here.