• 대한안전경영과학회지
• /
• 제8권2호
• /
• pp.169-184
• /
• 2006

We analyzed the questionnaire survey for the current maintenance of Incheon port's loading and unloading equipments and the possibility of TPM(Total Productive Maintenance) application. Results of the survey indicated that the current maintenance of Incheon port's loading and unloading equipments was not good. So we suggest TPM as the future maintenance methodology of equipments. Using TPM to the loading and unloading equipments we will expect to improve the productivity of the loading and unloading operation and to increase the life time of equipment. And also it will raise the safety of Incheon port.

• 한국항만경제학회지
• /
• 제23권4호
• /
• pp.23-47
• /
• 2007

인천항 항만하역장비에 대한 현재의 장비보전활동상황을 점검하여 장비생산성에 얼마나 영향을 주는지 설문을 실시하여 분석하고 방안을 제시하였다. 장비보전활동의 향상을 통하여 장비생산성을 높이는 방안의 하나로 TPM 기법의 적용을 제시하였다. 설문은 현재의 인천항 항만하역장비와 관련된 운영, 정비 및 운전자들을 선정 실시하였고, 내용은 장비보전활동의 구성요소를 중심으로 자주보전 계획보전활동, 개별개선활동, 교육 훈련활동, 장비관리활동, 조직 인적관리 활동 및 장비생산성으로 구성하였다. 장비생산성에 대한 연구모형과 가설을 만들어 컴퓨터패키지를 통하여 구조모형의 검증과 연구가설을 검증하였다. 연구가설의 검증결과에 의하면 장비생산성에 장비관리가 긍정적인 영향을 주고 있는 것으로 나타나고 있으나 조직 및 인적관리가 장비생산성에 긍정적인 영향을 주지 못하는 것으로 나타났다. 따라서 인천항의 장비생산성을 향상시킬 수 있는 하나의 대안으로 TPM 기법의 적용을 제안하며, TPM 실시시 장비관리활동의 강화와 조직 및 인적관리가 장비생산성에 영향을 미칠 수 있도록 하는 방안이 모색되어야 할 것으로 본다.

• 로봇학회논문지
• /
• 제19권1호
• /
• pp.79-91
• /
• 2024

Large warehouses are building automation systems to increase efficiency. However, small warehouses, military bases, and local stores are unable to introduce automated logistics systems due to lack of space and budget, and are handling tasks manually, failing to improve efficiency. To solve this problem, this study designed small loading and unloading equipment that can be mounted on transportation vehicles. The equipment can be controlled remotely and is automatically controlled from the point where pallets loaded with cargo are visible using real-time video from an attached camera. Cargo recognition and control command generation for automatic control are achieved through a newly designed deep learning model. This model is designed to be optimized for loading and unloading equipment and mission environments based on the YOLOv3 structure. The trained model recognized 10 types of palettes with different shapes and colors with an average accuracy of 100% and estimated the state with an accuracy of 99.47%. In addition, control commands were created to insert forks into pallets without failure in 14 scenarios assuming actual loading and unloading situations.

• 대한안전경영과학회지
• /
• 제8권1호
• /
• pp.1-16
• /
• 2006

We applied the TPM to loading and unloading equipments of Incheon port and compared with the current maintenance of Incheon port's equipments. Also we analyzed the death disaster causes of equipments and work tools and suggested TPM techniques as a plan of disaster prevention. Using TPM to the loading and unloading equipments we expect to obtain the breakdown zero, defective zero, and disaster zero. And then it should raise the productivity of harbor loading and unloading equipments.

• 한국항만경제학회지
• /
• 제33권1호
• /
• pp.1-10
• /
• 2017

물류센터의 생산성 및 안전도 향상을 위한 기계화 및 자동화가 급속도로 진행되고 있으며, 작업자들의 효율적이고 안전한 작업 지원을 위한 다양한 연구들이 진행되고 있다. 하지만, 집배송차량과 물류센터 간 연결 역할을 하고 있는 하역작업장의 경우는 아직까지도 지게차 위주의 작업이 이루어지고 있다. 또한 지게차와 작업자가 같은 공간에서 함께 작업함에 따라 이로 인한 안전사고도 자주 발생하고 있다. 따라서 본 연구에서는 상하역자업장의 기계화 및 자동화를 통해 생산성과 안전성 향상의 문제를 해결하기 위해 여러 개의 팔레트를 한꺼번에 작업할 수 있는 일괄 하역장비들에 대해 소개하였다. 일괄 하역장비들은 새로운 개념의 하역장비로 적용 시 효율적인 운영을 위해 필요한 적정 장비 대수는 범용 4대, 전용 3대이다. 작업장 면적은 장비크기와 부가공간을 포함하여 범용 $256.28m^2$, 전용 $207.00m^2$가 필요하며 이를 기반으로 작업장 면적 및 일괄 상하역장비를 고려한 상하역작업장을 설계하였다. 또한 NPV, IRR, PBT 등 경제성 분석을 실시하였으며 주요 변수에 대한 민감도 분석을 수행하였다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2005년도 심포지엄 논문집 정보 및 제어부문
• /
• pp.246-248
• /
• 2005

The power plants have a loading dock and unloading device for the diverse kinds of fuel such as the bituminous coal and natural gas imported by the sea from all over the world. To unload the coal in the ship not only in the environment-friendly manner but also in the cost-effective way, the new type of heavy equipment loaded with additional features as well as excavator and the remote controller to maneuver this equipment are developed. This heavy equipment, which can be used to unload the coal in the ship in conjunction with CSU (Continuous Ship Unloader), and the remote controller are endorsed by the related code and laws. With the remote controller, the field workers can operate the unloading equipment at the remote place far from the equipment as well as in the cabin for themselves without tile remote controller.

• 한국해양공학회지
• /
• 제12권1호
• /
• pp.65-75
• /
• 1998

The fracture resistance curve is one of most important and design techniques employed in nuclear pressure vessel structures. This study is to evaluate the J-R curve characteristics for the SA508C-3 by the unloading compliance method and load rato analysis. The effect of strain aging for the exponential correlation of the J-R curve in this metal are investigated at room temperature, 20$0^{\circ}C$ and 30$0^{\circ}C$. The load ratio analysis method can evaluate the J-R curve by using the simple tension load-displacement curve only without the repeat of the unloading and loading. Therefore, the analysis by the proposed load ratio method has a merit, in comparison with the unloading compliance method, which can measure the crack length without the precision measurement equipment.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2023년도 춘계학술대회
• /
• pp.61-62
• /
• 2023

지난 COVID-19로 인해 항만 노동자 수가 일시적으로 감소하는 경우가 발생하였다. 감염병 확산 방지를 위해 다수의 노동자가 격리됨에 따라 항만 운영 프로세스 곳곳에서 병목과 대기가 발생하여 터미널의 혼잡도가 증가하였고, 이로 인해 터미널 운영 효율성이 저하되는 등의 문제가 발생하였다. 그러나 터미널 혼잡도는 터미널의 운영 효율성과 직결되는 핵심 지표임에도 터미널 내부 하역장비 중심의 혼잡도는 명확한 계산이 이루어지지 않는것으로 파악된다. 따라서 본 연구를 통해 하역장비 중심의 컨테이너터미널 혼잡도를 측정하고자 한다. 여러 분야에서 일반적으로 사용되는 혼잡도 산정방식은 이미지 기반의 데이터를 바탕으로 혼잡도를 측정하고 있다. 이러한 방식은 양적하 계획에 따라 움직이는 하역장비의 특성상 기존의 혼잡도 산정방식을 그대로 적용하는것은 다소 무리가 있다. 따라서 본 연구에서는 장비의 대기시간 및 turn around time 등을 활용한 터미널 혼잡도의 산정방식을 제시하고, 부산항 A 터미널의 데이터를 활용하여 산정된 혼잡도의 유의성을 검증하였다.

• 한국경영과학회:학술대회논문집
• /
• 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
• /
• pp.592-598
• /
• 2005

The port, differently from general working places, is a closed area required for security, customs, and quarantine procedures. The loading and unloading is being done differently by ports, cargoes, and ships. To do loading and unloading, a lot of equipment and different types of labor are required, which flow is complicated and safe management is essential. As above mentioned the port is very unique and very deteriorated working place in its working environment. The purpose of this study is to propose ways to reduce and prevent from port accidents. As first step to do this, we have collected 923 accidents happened at Incheon Port during the period of 1994 to 2003. We have thoroughly analyzed characteristics, harmfulness, and risk of the loading/unloading they have done, as well as the accident frequency and relationship between the accidents. As second step to further analyze, We have employed DMAIC technology, an advanced process of 6 sigma presently in spotlight as the best program for management innovation. This analysis results in recognition of important accident characteristics, causes and effects analysis, critical causes of accident, and suggestions to decrease accidents.

• 대한안전경영과학회:학술대회논문집
• /
• 대한안전경영과학회 2005년도 춘계학술대회
• /
• pp.199-212
• /
• 2005

Many countries of the world is driving forward development of large-scale hub port. They are now pushing ahead with setting up of effective marketing strategies to survive in keen competitions of the 21st century port industry. The port is of ever increasing importance for the bridge connecting sea and road transportation in handling international cargoes. The port, differently from general working places, is a closed area required for security, customs, and quarantine procedures. The loading and unloading is being done differently by ports, cargoes, and ships. To do loading and unloading, a lot of equipment and different types of labor are required, which flow is complicated and safe management is essential. As above mentioned the port is very unique and very deteriorated working place in its working environment. The purpose of this study is to propose ways to reduce and prevent from port accidents. As first step to do this, we have collected 923 accidents happened at Incheon Port during the period of 1994 to 2003. We have thoroughly analyzed characteristics, harmfulness, and risk of the loading/unloading they have done, as well as the accident frequency and relationship between the accidents. As second step to further analyze, We have employed DMAIC technology, an advanced process of 6 sigma presently in spotlight as the best program for management innovation. This analysis results in recognition of important accident characteristics, causes and effects analysis, critical causes of accident, and suggestions to decrease accidents.