• 한국농공학회:학술대회논문집
• /
• 한국농공학회 2003년도 학술발표논문집
• /
• pp.251-254
• /
• 2003

For improving the flow capacity of pipeline system the hydraulic inspection method was developed conducting on-site with survey of pipeline facility such as diversion work, air vent, etc. and pipe network analysis. The pipe network analysis method determine pipe diameter with trial and error. The validity of the hydraulic inspection method proved adapting on S-district pipeline system.

• 센서학회지
• /
• 제25권2호
• /
• pp.155-159
• /
• 2016

In this work, we have developed a test system to examine whether the charge indicator of the plug-in hybrid electric vehicle (PHEV) works properly or not. In PHEV, the driver should charge the necessary electricity by plugging in manually and be able to know the charging status through the charge indicator conveniently located for the charging individual. Our system used the CAN bus to transmit the same commands from ECU to the indicator to test the proper operation of the indicator lights. It measured the electric current values during operation and analyzed to determine the quality of the indicators. The inspection items included the proper packaging, the electrical shorts, the LED lighting during charging, the LED lighting for charging failure, and the LED lighting when errors occur. We developed the system for the operators in the factory allowing them to approve the test results at the site. We developed the hardware, the control software, and the software to store the test results and the history of the products in the database. Serial numbers were given to the good quality products and the bar code labels were printed to trace the products afterwards. Through this work, we developed a system to inspect the electric parts in real time upon fabrication. We are planning to further improve our system to inspect the brightness of the indicator by adding the vision inspection in future.

• 대한건축학회논문집:계획계
• /
• 제34권5호
• /
• pp.11-20
• /
• 2018

To prevent illegal building work in advance, regional building safety centers were introduced to perform technical investigations and management. The purpose of this study is to propose the detailed operational directions of the regional building safety center through the analysis on the current status of parameters, such as the operation of designated confirmation and inspection bodies in Japan. We consider the role, building administrative process and establishment criteria of regional building safety centers through the analysis the introduction background and the designation criteria of designated confirmation and inspection bodies. In establishing the center's professional manpower qualifications, we refer to the criteria for the professional qualifications of the designated confirmation and inspection bodies. In addition, the calculation method of required manpower of verification inspectors in Japan was used as a reference in setting the scale of regional professional manpower. Finally, we propose the detailed operational directions of the regional building safety center such as (1)roles of the center, (2)establishing management plan of the center, (3)work scope (4)scale of the professional manpower, (5)qualification of the professional manpower, and (6)funds.

• 국제학술발표논문집
• /
• The 5th International Conference on Construction Engineering and Project Management
• /
• pp.7-13
• /
• 2013

Recently, defect management have been considered as one of the major issues for more large-sized and complicated in domestic construction industry. However, the defect management have not been performed systematically because of special manpower, excessive amount of documents, 2D based inspection work, unclear traditional checklists, complicated work process and difficulty in communicating construction information. Therefore, the construction field manager could not performed the quality inspection and defect management work on time as well as the reliability of recorded quality and defect factors was decreased. The primary objective of this study is develop a Construction Defect Management Application CDMA) using a mobile (smartphone). The application can be sharing a huge information and communication technology based on RFID (Radio-Frequency Identification), BIM (Building Information Modeling) which enables field mangers to efficiently gather the information of defection in construction on-site.

• Architectural research
• /
• 제9권1호
• /
• pp.47-52
• /
• 2007

The purpose of this research is to evaluate the feasibility of outsourcing test/inspection activity in construction work. This research conducted a questionnaire of interested parties as well as a survey by Analytic Hierarchy Process (AHP) with experts on quality control. For the evaluation by AHP, five criteria were adopted and a number of pair-wise comparisons were conducted through two stages. Finally, the weighting coefficient to approve the outsourcing was calculated at 0.606 and it therefore appeared more reasonable to permit rather than prohibit outsourcing. According to the AHP result, it was found that outsourcing would be necessary to enhance the objectivity and specialties of quality testing and inspection, even though somewhat undesirable in terms of enhancing a sense of responsibility and systemically conducting the testing and inspection.

• 한국정밀공학회지
• /
• 제22권1호
• /
• pp.82-88
• /
• 2005

The damage inspection of container surface is performed by the expert inspectors at the container terminal gate of harbor. In this paper, we substitute the expert's capability with the damage inspection system using the artificial intelligent control algorithm and vision system, so we can improve the work environment and effectively decrease the inspection time and cost. Firstly, using six CCD cameras attached to the terminal gate, whole container is partially captured according to eleven sensors aligned with the entering direction of container. Captured partial images are inspected by the fuzzy system which the expert's technology is embedded. Next, we compose partial images to be a complete container image through the correlation coefficient method. Complete container image is saved to solve future troublesome problems. In this paper, the effectiveness of the proposed system was verified through the field test.

• 한국압력기기공학회 논문집
• /
• 제4권2호
• /
• pp.57-61
• /
• 2008

During the period of retubing work for the licensing renewal, the fuel channels, calandria tubes and feeders of CANDU Reactors will be replaced, and calandria visual examination will be performed. This period is a unique opportunity to inspect the inside of the calandria. The visual inspection for the calandria vessel and its internals of Wolsong NPP is scheduled for confirming the calandria integrity. The first visual inspection for the calandria is planned in Pt. Lepreau led by AECL. The visual inspection for Wolsong NPP, led by NETEC(Nuclear Engineering & Technology Institute) of KHNP, will employ 3D laser scanner and 3D CAD Mock-up for the first time in the world, in addition to a conventional video camera. The inspection system is composed of a robot with the 3D laser scanner, a video camera and a hardness meter.

• 한국안전학회지
• /
• 제20권3호
• /
• pp.14-18
• /
• 2005

The ultrasonic handy scanner to be developed in this research is a nondestructive inspection equipment with various facility. The ultrasonic inspection is the technique area which apply range is increasing greatly with IT. The purpose of this research is development of a ultrasonic handy scan inspection device with the utility in a work spot. The ultrasonic handy scanner to be developed with portability in this research is able to carry out the spot inspection. It can contribute to the quality improvement, cost reduction and safety design.

• 한국건설관리학회논문집
• /
• 제6권1호
• /
• pp.140-150
• /
• 2005

최근 공동주택의 마감자재가 고급화, 다양화되면서 품질만족에 대한 고객의 욕구가 과거 그 어느 때 보다도 증대되고 있으며 건설업체 또한 자사의 신인도 및 브랜드 가치의 상승을 위해 정밀시공을 통한 품질확보에 많은 노력을 기울이고 있다. 그러나 국내 공동주택 현장의 품질점검 및 하자관리는 현장관리 인원의 부족, 과다한 문서 발생, 업무 절차의 복잡성 및 관련주체간의 비효율적인 의사소통으로 품질점검에 따른 시설물의 이력관리 및 하자관리가 신속히 이루어지지 못하고 있는 실정이다. 따라서 본 연구의 목적은 이러한 품질점검 및 하자관리의 문제점을 해결하고자 PDA 및 웹을 활용하여 공동주택의 품질점검 및 하자관리에 대한 정보를 실시간으로 수집하고 이를 통해 관련 주체간의 효율적인 업무처리와 세대별 이력관리를 지원할 수 있도록 하는 공동주택 품질점검 및 하자관리 시스템을 구현하는 것이다. 본 연구에서 제시된 품질점검 및 하자 관리 시스템의 활용은 기존의 수작업에 의한 업무 절차를 간소화하고 관련 조직간의 원활한 의사소통과 시설물의 하자 관련 이력 데이터를 구축케 함으로써 품질관리 관련 업무의 질적 향상을 도모하고 궁극적으로는 품질 향상을 통한 건설업체의 고객 만족도 및 신인도 제고에도 크게 기여할 수 있을 것으로 기대된다.

• 한국소음진동공학회논문집
• /
• 제24권11호
• /
• pp.854-860
• /
• 2014

Workers engaged in car inspection works have been exposed to many occupational hazards including noise, particulate matter, and volatile organic substances. Noise-induced hearing loss(NIHL) is one of the leading health hazards among Korean workers. The aim of this study is to evaluate the noise levels in several car inspection shops by introducing the evaluation methods of KMOEL/OSHA and ACGIH. Six sites in central area of Korea were selected to monitor the noise levels of workers by personal and area sampling methods for two consecutive days in spring, summer, fall and winter seasons. Dosimeters have been used for this noise monitoring program. Obtained noise levels by the evaluation method according to KMOEL/OSHA are the range of 50.2~88.2 dB(A), these are lower than KOEL/OSHA standards level of 90 dB(A). But highest noise by ACGIH's evaluation methodology is recorded 92.3 dB(A) and is greater than NIHL standard level of 85 dB(A). So that many workers may be exposed to the dangerous noise environment. The higher the car inspection loads daily, the higher the noise levels in the sites. Seasonal fluctuation of noise levels at the process might give monitoring results with high variations. Area noise levels showed higher than those of personal sampling, which illustrate some high noise spots in the car inspection areas.