• 제목/요약/키워드: port entrance and exit

검색결과 9건 처리시간 0.03초

항만출입 신청서식 및 출입증 발급업무 표준화에 관한 연구 (Research of Port entrance and exit Application form and entrance and exit symptoms issuing business standardization)

  • 최성필;최형림;신중조;전용식;김희윤
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2009년도 추계학술대회
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    • pp.175-176
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    • 2009
  • 기존 항만출입 신청서식 및 출입증발급업무는 각 항만별, 부두별로 신청, 검토, 발급의 공통된 프로세스를 가지고 있지만, 표준화된 서식과 발급업무가 구축되어 있지 않아 사용자의 혼란을 증가시키고 있다. 이러한 문제점을 해결하기 위해, 기존 인원 및 차량의 항만출입 신청서식 및 출입증발급업무에 대한 조사 분석을 통하여 항만출입 신청서식과 출입증발급업무에 대한 표준안을 제시하여 효율적인 프로세스를 제공하고자 한다.

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Analysis of Air Circulation in Oyster Mushroom Farm

  • Jeong, Won-Geun;Lim, Hack-Kyu;Kim, Tae-Han
    • Journal of Biosystems Engineering
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    • 제37권2호
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    • pp.75-81
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    • 2012
  • Oyster mushroom farm which could not meet optimum temperature range yields non-uniform sized, low quality products. Thus, this study, utilizing STAR CCM+, one of the computational fluid dynamics (CFD) programs, analyzed the impact of air circulation and temperature distribution. Methods: After we visited numerous mushroom farms, we measured the temperature at the discharge ports of heaters, fan capacity, and the locations of the air circulators in the farms. According to the data, most mushroom growers installed the heaters near the entrance and discharge ports of the heaters at the third growing bed on the same height as the heaters in the entrance. The temperature at the discharge port of heater was $1,26^{\circ}C$, and the fan capacity was 4,500 $m^3$/hr. The air circulator was placed in the center of the mushroom farm 50cm above the ground, and its capacity of inlet port was 1,100 $m^3$/hr and discharge port 1,600 $m^3$/hr. The mushroom farm was insulated. Results: According to the analysis of the temperature distribution in the vertical plane of the entrance side, no air circulation causes the high temperature zone of 296~299K at the discharge port of the heater to take up 34% of area while the operation of air circulators causes it to occupy only 9%. This means that not using air circulators leads to a concentration of high temperature at the discharge port near the entrance. In addition, with the results of the analysis of the temperature distribution in the vertical planes of the center, no air circulation causes the temperature zone of 295~298K at the discharge port of the heater to take up 48% of area while the operation of air circulators causes it to occupy 80%. This shows that the high outlet port temperature disseminated to the center. Conclusions: After ninety minute operation of both heater and air circulator, the interior temperature became stabilized in the mushroom farm. Air circulation made the high temperature at the discharge port disseminate to the center and exit in the farm and equalize the temperature distribution.

물류보안강화와 RFID에 관한 소고 (A Study on Strengthening of Logistics Security and RFID)

  • 김장호;김종득;김재성
    • 통상정보연구
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    • 제9권4호
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    • pp.241-261
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    • 2007
  • 9.11 terrors which happen in 2001 in the U.S. recognize importance about national security and Department of Commerce, country safety department, Federal Communication Commission(FCC) etc. are establishing RFID sticking plan in harbor exit and entrance container for this, and it is real condition that is preparing preparation of law and system that establishes harbor peace law(Safe Port Act) on October, 2006 and acts on for U.S. about container load cargo Europe and Asia each countries. These law and system is logistics security that strengthen search for import and export freight and security to main contents. To meet in these circumstance subsequent, this paper is to examine the following three themes. First, examined necessity of logistics security and logistics security strengthening tendency, and second, examined in achievement of logistics business and RFID, and third, presented logistics security process that utilize change of realization about logistics security and RFID's role for logistics security. Through upper investigation, this paper suggested the realization about logistics security raising, logistics security connection system construction by export step, real-time freight chase that use RFID, construction necessity of executive system and development of logistics security equipment required.

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광양항 항로 개선에 관한 Simulation 연구 (A Simulation Study on the Improvement of the Waterway of Kwangyang Harbour)

  • 홍종해;김환수
    • 한국항해학회지
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    • 제18권2호
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    • pp.1-18
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    • 1994
  • Kwangyang harbour has been developed very rapidly and has 20 berths including 2 for 250,000DWT bulk carriers at the terminal of Kwangyang Steel Company only. In addition to this, the port is developing a container terminal with 10 berths for 50,000GRT container ships, the construction of which is scheduled to be finished in the year 2000. Because of these development, it has been pointed out that the existing waterways are not wide and safe enough for the new large ships to be catered for. This work, therefore, aimed to examine the naviga-tional safety of the waterways of Kwangyang Harbour, and to suggest how to improve the existing water-ways for the large ships to be introduced in the near future. In examining the safety of the existing and newly suggested waterways, waterway design simulation methodology has been applied. From this study, it has been suggested that the No.4 navigational channel has to be dredged to the depth of 22.5 meters and used as an entrance channel only, while the No.3 channel is used as an exit channel. Additionally, a new waterway has been recommended to be established over the Myodo Island for the container ships which will use the new terminal, the width of which has been recommended to be 400 meters with 440 meters from the bend area.

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새만금신항만 특화에 관한 결정요인 분석에 관한 연구 (A Study on the Determinant Factor Analysis for the Characterization of Saemangeum New Port)

  • 김남석;최도원;전영환
    • 한국항만경제학회지
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    • 제28권1호
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    • pp.263-288
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    • 2012
  • 본 연구는 새만금신항만을 건설함에 있어 국제적인 선사, 화주 및 포워더 유치를 위해 항만경쟁력 중 어떠한 국제경쟁력을 확보해야 새만금신항만의 활성화에 기여할 것인지 그 요인을 선정하는 것을 연구의 목적으로 하였다. 본 연구의 방법으로 요인분석 및 계층분석적 의사결정방법론(AHP)을 사용하였다. 선행연구를 통하여 짧은 입출입 항로, 주요 인프라 개발추진, 세제감면 및 규제완화를 비롯한 총 11가지의 측정변수를 선정하였고, 요인분석을 통해 '입지 및 시설', '주변 인프라 및 친수성', '지역 정책 및 환경'의 총 3가지의 상위평가 요인들을 그룹핑 하였다. 본 연구에서는 측정변수들의 신뢰성 검증을 요약 분석한 결과 총 11개의 측정변수의 Cronbach alpha 계수가 0.8 이상으로 나타나 신뢰성이 있다고 판단할 수 있다. 또한 일관성 검증 및 상위평가기준 중요도 분석과 측정변수별 중요도 분석을 실시하여 측정변수들의 우선순위를 산정한 결과 '주요 인프라 개발추진'이 가장 우선시 되는 측정변수로 선정되었으며 그 뒤를 이어 '중국 경제특구와의 인접성', '넓은 항만 배후부지', '공항과의 인접성', '국유지로 인한 국책사업의 가능성' 순으로 나타났다. 새만금신항만의 경쟁력 제고를 위한 활성화 방안으로는 새만금신항만을 환황해권 물류중심 허브항으로 건설하고 환경변화에 따른 대형선사를 유치해야 한다. 또한 새만금신항만의 시사점으로서 새만금신항만을 중량물 전용부두로 건설할 것을 제안해 보았다. 본 연구는 향후 개장 될 새만금신항의 국제경쟁력 요인 선정에 있어 중요한 지표로 사용될 수 있을 것이다.

A Study on the Safe Maneuvering of a G/T 100,000 Ton LNG Vessel by Using Her Control Surface through a Narrow Channel

  • Yoon, Jeom-Dong;Seol, Dong-Il
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2000년도 Proceeding of CIN-KIN Joint Symposium 2000 on M.E.T. Under STCW 78/95 and SINO-KOREA MARITIME CONTACT IN MID-CENTURIES
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    • pp.115-155
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    • 2000
  • Nawadays LNG has been beginning to take the place of petroleum as fuel all over the world and VLCC tankers of LNG will take the same sea routes that had been used by VLCC tankers of petroleum in the last pat of he 20th century. The transportation of LNG by a VLCC include more dangerous nature of sea peril than that of petroleum. We already know the dimensions of a disaster a LNG tanker could bring about in the case of the LNG tanker, Yuyo-Maru No. 10 in the Tokyo Bay of Japan in 1974. From the point of safety when we construct a LNG base or LNG pier in the base, the appropriate government authority and constructing company had better take sea pilots or some ships handling experts to participate in a prior consultation of the design of the project. A G/T 100,000 ton LNG base and pier were completed in November of 1996 in Inchon harbour in Korea and LNG VLCC tankers of G/T 100,000 ton class have been entering into the base ever since. This study was started and completed to comply with the requisition of the Sea Pilot Association of Inchon harbour in advance of the opening of the LNG base. As the entrance and exit channels leading to Inchon harbour were constructed in the years of 1930s, it was one of the most pressing works for Inchon sear pilots in 1996 to certify the method of safe passing maneuvering of a G/T 100,000 ton LNG tanker through the Pudo narrow channel prior to commercing actual piloting of the LNG VLCC tanker. The author made some mathematical models computing maneuvering of a vessel changing her course with her control surface through a narrow channel and computed maneuvering of a G/T 100,000 ton LNG tanker and also made maneuvering simulations of the vessel by a desk-top simulator. The results of computations and simulations are well coincided with each other in qualitative aspects to assure safe passing of the LNG VLCC.

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감천항 선박교통 특성을 반영한 도등 효용성 분석 (Effectiveness of Leading Light by Reflecting the Characteristics of Marine Traffic at Gamcheon Port)

  • 하신영;국승기
    • 한국항해항만학회지
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    • 제48권3호
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    • pp.232-238
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    • 2024
  • 본 연구는 현재 감천항에 입항하는 선박교통 특성을 반영하여 감천항 도등의 효용성을 검토하였다. 감천항 도등은 1996년 4,000TEU 컨테이너선 출입항을 위해 감천항 항로표지 보완 기본설계과정에서 제안되어 설치되었다. 이후 부산지방해양수산청의 감천항 정온도 향상을 위한 기존 외곽 시설 재배치 검토 연구를 통해 50,000DWT급 일반 화물선 입항 대응 및 한진 부두의 크레인 높이를 반영한 도등으로 개선되었다. 그러나 현재 감천항의 해상교통 특성을 보면 해상교통 혼잡도도 원활하고 대형선박 보다는 10,000톤 이하의 중소형 선박 비중이 높아 대형선박 입항을 대응하기 위해 개선된 도등의 효율성은 감소되었다고 볼 수 있다. 그러나 입항선박의 규모에 따른 변화 추이를 보면 30,000톤 이상선박의 입항비율의 연평균증가율(CAGR)이 8.45%로 증가되고 있어 향후 대형선박의 입항비중 증가에 대한 대비를 위해서는 감천항 도등을 필수 등화로 유지하는 것이 필요하다. 따라서 도등을 철거할 경우 감천항 항로의 협소한 공간 특성상 입출항 선박이 조우하는 경우에는 충돌의 위험이 증가하여 항해자에게 큰 부담이 될 수 있기 때문에 도등의 기능은 유지하는 대신 전도등을 이전설치 하여 유지보수에 대한 부담을 경감시키는 방법과 도등의 기능 대신 지향등을 설치하는 방법을 고려해 볼 수 있다. 지향등 설치 시 인근 부산북항에 설치된 Single Sector Lights가 명확한 중시선을 제공하지 못하여 지점에 따라 명확한 구분이 어려움에 따라 이용자 만족도가 떨어지는 부분을 개선할 수 있는 Double Sector Lights를 설치를 고려해볼 수 있다.

A Study on the Safe Maneuvering of a G/T 100,000 Ton LNG Vessel by Using Her Control Surface through a Narrow Channel

  • Yoon, Jeom-Dong;Seol, Dong-Il
    • 한국항해학회지
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    • 제24권5호
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    • pp.423-433
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    • 2000
  • Nowadays LNG has been beginning to take the place of petroleum as fuel all over the world and VLCC of LNG will take the same sea routes that had been used by VLCC tankers of petroleum in the last part of the 20th century. The transportation of LNG by a VLCC include more dangerous nature of sea peril than that of petroleum. We already know the dimensions of a disaster a LNG tanker could bring about in the case of the LNG tanker, Yuyo-Maru No. 10 in the Tokyo Bay of Japan in 1974. From the point of safety when we construct a LNG base or LNG pier in the base, the appropriate government authority and constructing company had better take sea pilots or some ships handling experts to participate in a prior consultation of the design of the project. A G/T 100,000 ton LNG base and pier were completed in November of 1996 in Inchon harbour in Korea and VLCC of LNG of G/T 100,000 ton class have been entering into the base ever since. This study was started and completed In comply with the requisition of the Sea Pilot Association of Inchon harbour in advance of the opening of the LNG base. As the entrance and exit channels leading to Inchon harbour were constructed in the years of 1930s, it was one of the most pressing works for Inchon sea pilots in 1996 to certify the method of safe passing maneuvering of a G/T 100,000 ton of LNG tanker through the Pudo narrow channel prior to commencing actual piloting of the VLCC of LNG. The authors made some mathematical models computing maneuvering of a vessel changing her course with her control surface through a narrow channel and computed maneuvering of a G/T 100,000 ton of LNG tanker and also made maneuvering simulations of the vessel by a desk-top simulator. The results of computations and simulations are well coincided with each other in qualitative aspects to assure safe passing of the VLCC of LNG.

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소형차 전용터널 내 수소연료전지차 화재시 집중배기방식의 제연성능에 관한 연구 (A study on the smoke control performance of the damper exhaust system at FCEV fire in tunnel for small vehicles)

  • 홍서희;백두산
    • 한국터널지하공간학회 논문집
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    • 제24권6호
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    • pp.745-756
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    • 2022
  • 도로터널은 입구와 출구를 제외한 모든 면이 막혀있는 반밀폐공간으로 화재가 발생할 경우 화재 연기는 화재로 인한 열부력과 터널 내 상시 존재하는 기류에 의해 종방향으로 확산하게 된다. 이러한 문제를 해결하기 위해 도로터널에는 연기의 이동방향을 제어하거나 화재지점에서 직접 배연함으로써 안전한 대피환경을 확보하고 신속한 구조 및 소화 활동을 위해 제연 설비를 설치하고 있다. 도심지에서는 인구 증가에 따른 교통량 증가로 인해 도심지 도로의 서비스 수준이 저하되어 극심한 정체현상이 빗어지고 있으며, 이에 대한 해결방안으로 도심지에 지하도로의 건설이 증가하고 있는 추세이다. 수소연료전지차(FCEV)의 TPRD를 통한 수소 누출 시 화재가 발생하는 경우, 화재강도는 누출량에 의존하며, 최대 화재강도는 TPRD의 오리피스 직경에 따라 달라진다. 본 연구에서는 TPRD의 오리피스 직경 1.8 mm를 고려하여 최대 화재강도가 15 MW일 때, 소형차전용터널 내 차도 풍속과 대배기구의 개방 간격에 따른 화재연기의 확산거리에 대해 분석하였다. 그 결과, 터널 내 차도 풍속이 1.25 m/s 이하인 경우 터널 내 기류제어가 가능하였으며, 댐퍼 간격이 50 m, 100 m 인 경우 화재로부터 200 m 범위 이내에서 제연이 가능한 것으로 분석됐다.