• 한국건설관리학회논문집
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• 제24권3호
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• pp.31-41
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• 2023

본 연구는 본격적인 우주 경쟁 시대에 중요 국가시설로 부각되고 있는 발사체 개발 시험시설의 변형, 폭발, 개조 등 형상변경 발생 시 효율적이고 체계적인 관리를 위한 형상관리 방법론을 개발하기 위한 연구이다. 형상관리 국제기준 분석을 통해 발사체 개발 시험시설에 적용할 형상관리 프로세스 프레임워크를 추출하고, 발사체 개발 시험시설의 라이프 사이클 엔지니어링을 수행한 전문가를 대상으로 설문조사를 실시하여 국내 발사체 개발 시험시설의 운영·관리에 최적화된 형상관리 방법론을 제안하였다. 발사체 개발 시험시설에 대해 형상을 식별하고, 설계 요구조건에 의해 구축이 완료된 상태 이후에는 형상관리 담당, 형상관리 조직, 형상관리위원회를 통해 형상변경 사항에 대해 승인, 처리함으로써 발사체 개발 시험시설의 형상을 통제된 상태로 관리하고자 한다.

• 한국추진공학회지
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• 제23권2호
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• pp.87-94
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• 2019

액체로켓 추진기관 시험설비는 시험대상체가 상위 시스템에 장착되었을 때의 인터페이스 조건을 모사하여야 하며, 시험 시 파손이 발생할 수 있는 개발품의 특성상, 안전하게 시험이 이루어질 수 있게 구축되어야 한다. 이를 위해 추진기관 시험설비 기반시설은 안정적인 연소가 이루어지고 사고 시에도 안전이 보장되도록 구축되어야 한다. 본 논문에서는 액체로켓 엔진 추진기관 시험설비 기반시설의 구축 및 운영 시 고려해야 할 사항에 대해, 토목/건축, 시험 스탠드, 설비의 배치, 타 설비와의 운영 조합 및 공동구, 소화설비, 전력설비 측면에서 고찰하였다.

• 대한임베디드공학회논문지
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• 제16권4호
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• pp.129-136
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• 2021

River facilities and port structures require a regular inspection and diagnosis due to obsolescence. Currently, most river facilities are undergoing indirect inspection and diagnosis by divers. The underwater inspections are not feasible due to safety issues of divers and restrictions on working hours and environment. To overcome these issues, it is intended to conduct inspections of river facilities using underwater drones. In this research, an underwater ROV (Remote Operated Vehicle) has been developed, which is a kind of drone with propellers. As a key device of this research, an injection device has been attached to the underwater drone to conduct an operation test, a stable operation test of an underwater drone, and a test of attached sensors. The river facility inspection can be carried out optimally using the hovering control of the drone and injection systems. With the developed ROV system, hovering test and injection test have been performed to verify the feasibility of this development.

• 대한전기학회논문지:전력기술부문A
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• 제54권6호
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• pp.284-292
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• 2005

Because all of the short-circuit testing laboratories have the limitation of test facilities, the synthetic making test methods have been used to estimate the short-circuit making performance of the ultra high-voltage circuit breaker as the alternative to direct test methods. So, KERI(Korea Eelctrotechnology Research institute) has completed the construction of the synthetic making test facilities using the low capacity step-up transformer method which fulfill the requirements specified in newly revised IEC 62271-100 Edition 1.1(2003) and have the testing capability up to 550kV, 63kA full-pole circuit breaker. The test facilities using the low capacity step-up transformer method presented in this paper are made up of the unit equipments such as HCS(High-speed Closing Switch), ITMC(Initial Transient Making Current) circuit and UP TR(low capacity step-up transformer) and have the operating range of 17.6$^{\circ}$ $\~$ 145.1$^{\circ}$ for testing the circuit breaker rated on up to 50kA and 43.1$^{\circ}$ $\~$ 119.6$^{\circ}$ for more than 50kA.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2010년도 제35회 추계학술대회논문집
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• pp.814-815
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• 2010

한국항공우주연구원에서는 한국형발사체 개발사업의 일환으로 KSLV-II 발사체의 추진기관 성능시험을 위한 연소기, 엔진 등 대형 추진기관 시험설비를 구축 및 운영 예정에 있다. 이에 앞서 해외 기술 선진국에서의 과거 발사체 개발에 적용하였던 대형시험설비에 대한 사례를 조사 및 검토함으로써 향후 국내 실정에 적합한 한국형발사체 시험설비 개발 계획에 참고하고자 한다.

• Nuclear Engineering and Technology
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• 제46권4호
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• pp.501-512
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• 2014

HANARO is a multipurpose research reactor located at the Korea Atomic Energy Research Institute (KAERI). Since the commencement of its operation in 1995, various neutron irradiation facilities, such as rabbit irradiation facilities, fuel test loop (FTL) facilities, capsule irradiation facilities, and neutron transmutation doping (NTD) facilities, have been developed and actively utilized for various nuclear material irradiation tests requested by users from research institutes, universities, and industries. Most irradiation tests have been related to national R&D relevant to present nuclear power reactors such as the ageing management and safety evaluation of the components. Based on the accumulated experience as well as the sophisticated requirements of users, HANARO has recently supported national R&D projects relevant to new nuclear systems including the System-integrated Modular Advanced Reactor (SMART), research reactors, and future nuclear systems. This paper documents the current state and utilization of irradiation facilities in HANARO, and summarizes ongoing research efforts to deploy advanced irradiation technology.

• 한국주거학회논문집
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• 제18권2호
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• pp.39-47
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• 2007

The objective of this study is to analyze the space usage and user evaluation of community facility in High rise Mixed-use Apartment. This study was conducted case study and questionnaire survey. Four High rise Mixed-use Apartments built since 2000 were chosen for case study and 166 residents were collected for questionnaire survey. The frequency, percentage, mean, t-test and F-test were executed through SPSS for Win 12.0 statistics package program. The types of community facilities of High rise Mixed-use Apartments were consisted of sports, child care/study, information sharing, leisure/cultural facilities. The usage percentage of community facilities increased since the residents have moved to their current residence of High rise Mixed-use Apartments from their previous residence. The most satisfactory facility was sports facilities. The satisfaction of community facilities showed high in general. The satisfaction of community facilities was significant with gender and age.

• 한국정밀공학회지
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• 제20권9호
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• pp.63-69
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• 2003

As increasing underground facilities, more effective management is needed nowadays. It is important to get an accurate information of underground facilities to manage that, so some methods of detecting location - electromagnetic induction method, ground penetration radar method, sound wave method - are used to obtain the information of underground facilities. In this study, a magnetic method to detect underground facilities was developed. In the magnetic method, underground facilities are detected by a detector and the magnetic marker which is a permanent magnet and used to marking the location by attaching underground facilities. A test field was constructed for experiment with the magnetic marker, PVC pipe, and steel pipe under ground 1.5m, and a ferromagnetic detector was used for measurement. Magnetic strengths of the magnetic marker were measured by the detector at each location in the test field, and analyzed by magnetic field analysis tool in the same condition. In the result, the underground pipes of 1.5m below were detectable within the deviation $\pm$0.2m. When For applying this method, it should be considered that ferromagnetic materials around the detector could affect a measured value.

• 한국보건간호학회지
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• 제23권1호
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• pp.91-100
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• 2009

Objectives: The purpose of this study was to compare the health status and life satisfaction of elders in charged and free welfare facilities. Methods: The subjects of this study were selected among those without cognitive impairment from charged (124 persons) and free (126 persons) welfare facilities in D city. The data were analyzed using frequency analysis, $x^$ test, and t-test. Results: Subjective health status was significantly higher for the residents in the charged welfare facilities. The data collected indicated significantly higher scores for the residents at charged welfare facilities when questioned regarding the physical health status, sense, personal hygiene, excretion control and activity. The data collected indicated significantly higher scores for the residents at charged welfare facilities when questioned regarding the mental health status, recall of breakfast side dishes, awareness of dates, interests in daily matters, feelings of happiness, feelings of loneliness and depression. Life satisfaction was significantly higher for the residents at the charged welfare facilities. Conclusions: There were significant differences in health status and life satisfaction of elders in charged and free welfare facilities.

• 시스템엔지니어링학술지
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• 제2권1호
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• pp.37-41
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• 2006

The KSLV-I satellite launch vehicle will be launched in a space center currently under construction. The Space Center which is an advance post base of space development of Korea is located on Oenaro island in Kohung, South Cholla Province. A Ground Complex of the Space Center consists of an AC(Assembly Complex), a LC(Launch Complex), and a MCC(Mission Control Center). Assembly and test facilities are located in the AC in which stage assembly, integrated assembly, check-up, certification test, and pre-launch test are made effectively. A launch pad, fuel supply facilities, a launch control center and associated supporting facilities are located in the LC, and the MCC has control over the space center. These ground complex facilities have diverse forms of an interface with mechanical device, electric device, and etc. These should also provide optimum condition and performance during launch operation processes of the launch vehicle. This paper introduces the result of R&D for the AC of the ground complex performed during system design period.