• Nuclear Engineering and Technology
• /
• 제56권7호
• /
• pp.2576-2583
• /
• 2024

In this paper, the similarity criterion and dimensionless conversion method combined with the elasticity condition and Hooke's law are used to derive the functional relationship of the maximum effective value of the vibration velocity between the prototype pump and the model pump. The seawater circulation pump of a nuclear power plant is used as the prototype pump, and the model pump is obtained by performance conversion and choosing the appropriate scale, and the vibration state of the model pump under different flow rates is measured and analyzed. The vibration data of the model pump through the function relationship to find out the vibration parameters of the prototype model pump, and compare with the vibration data of the seawater circulation pump in reality. It can be seen that with the increase of flow rate, the maximum effective value of the vibration velocity of both model and prototype decreases and then increases, and the relative error is small, the maximum value is 7.7757%. Therefore, it can be considered that the functional relationship of model pump converted to prototype pump derived in this paper can be used to analyze the vibration of the actual seawater circulation pump of coastal nuclear power plant.

• 한국건설관리학회:학술대회논문집
• /
• 한국건설관리학회 2008년도 정기학술발표대회 논문집
• /
• pp.725-728
• /
• 2008

플랜트 건설공사의 경우 최근 매우 복잡화, 전문화, 대형화되고 있고, 이에 따라 지속적으로 첨단기술접목과 함께 고부가가치 창출이 예상되고 있어 더욱 고도화된 사업관리계획과 더불어 전문인력 양성, 지식정보의 공유가 필수적으로 성장의 기본 요건으로 자리매김하고 있는 추세이다. 이에 따라 본 연구는 플랜트 건설산업의 경쟁력 강화를 위하여 관련 현황을 분석하고, 기업의 특성에 맞춘 유연한 Knowledge Management System(KMS) prototype을 구축, 웹 환경기반의 Portal에 연동한 시스템을 제시하고자 한다.

• 전기학회논문지P
• /
• 제63권2호
• /
• pp.89-94
• /
• 2014

Tidal generation has become one of environmentally friendly new and renewable future sources of energy. The Sihwa Tidal Power Plant in South Korea, which was imported from abroad by turnkey type in 2011, connected to the power system in 2012, and is currently under commercial operation. However, leading companies are reluctant to disclose their technologies associated with the control systems and are not cooperative in technology transfers, making it a high priority to develop core technologies in South Korea. In order to develop a start stop control system for tidal generation, this paper presents the optimal algorithm for decision making and prototype of hardware design. First, control systems in tidal power, such as plant operation control, data interfaces between systems, monitoring and control points of the control system, are analyzed. The software development and PC based emulator processes for optimization algorithm processing are described. Finally, verification of the algorithm implementation, hardware platform for start stop control device, and implementation of prototype control system were discussed.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1998년도 하계학술대회 논문집 B
• /
• pp.807-809
• /
• 1998

Plant Protection Systems(PPS) are those systems that initiate safety actions to mitigate the consequences of design basis events by sending signals to Reactor Trip Switch Gear System(RTSS) and Engineered Safety Features-Component Control Systems(ESF-CCS). This paper illustrates distinctive features and improved design concepts of Korea Next Generation Reactor(KNGR) based on the experience obtained through prototyping of PPS.

• 한국경영과학회:학술대회논문집
• /
• 대한산업공학회/한국경영과학회 1996년도 춘계공동학술대회논문집; 공군사관학교, 청주; 26-27 Apr. 1996
• /
• pp.658-661
• /
• 1996

Information that can be obtained from nuclear power plant trip cases is important for the efforts to reduce the trip occurrences. However, trip case reports, generally printed in documents, have shortcomings in using the contents. A database system called Information System of Trip Event Cases (INSTEC) is being developed to improve the use of trip information. INSTEC will provide the information obtained from the analysis of Korean nuclear power plant trips, such as component failures or human errors that induced the trips, problems contributed to the trips, and the sequence of unit events. In this study, in the process of INSTEC development, information analysis has been performed and a prototype of the system was developed. The prototype of INSTEC with user interface was presented to plant personnel to collect their opinion on INSTEC by using a questioninnaire. As results, it is confirmed that INSTEC would be helpful and useful for plant personnel to review the trip case information.

• 한국안전학회지
• /
• 제7권4호
• /
• pp.95-99
• /
• 1992

The attraction of using expert system in operator support systems for modern plant is that it offers a way of dealing with the problem of information overload that can occur during a severe disturbance at a modern industrial plant. During such a disturance the volume of information presented to operators may be such that they are unable to decide quickly what is important and what is not. Therefore, arriving at a correct diagnosis of the initialling fault may be delayed. An expert system operator sup-port system is a means of focusing attention on what really matters and cutting out the rest. This paper presents the development of prototype expert system which detect the fault part, machine, system and decide action priority. This prototype expert system has 6 sub- system which is Interface Manager, Decision Maker, Inference Engine, Knowledge base, Simulatio, and D.P System ( Diagnosis and predictor)

• 한국소음진동공학회:학술대회논문집
• /
• 한국소음진동공학회 2014년도 추계학술대회 논문집
• /
• pp.399-401
• /
• 2014

The comprehensive vibration assessment program(CVAP) of APR+ nuclear power plant(NPP) is classified as non-prototype, category II with Palo Verde NPP as valid prototype. In this paper, CVAP for first plant of APR+ NPP is proposed. The Control Element Assembly(CEA) shroud of APR+ NPP is different from that of Palo Verde NPP. And the Core Support Barrel(CSB) outer diameter and the flow rate of normal operation of APR+ NPP are larger than those of Palo Verde NPP. Vibration and stress analysis program should be conducted to establish test acceptance criteria. Limited vibration measurement program should be implemented to establish the margin of safety, demonstrate the satisfaction of test acceptance criteria and confirm the similar vibratory response between the APR+ and Palo Verde NPP. Because of the change of normal operation condition, the nominal differences between APR+ and Palo Verde NPP in the structural and hydraulic analysis are studied to determine the measurement locations.

• 조명전기설비학회논문지
• /
• 제27권12호
• /
• pp.74-80
• /
• 2013

Generator faults does not happen more often than the transmission and substation facility faults. However, impacts on the power system by generator faults are very large. In order to minimize the impact of generator faults, generator protection and control system with high reliability is required. Most of the generator relay in generator protection and control system of large power plant of Korea is operated by imports from abroad. Accordingly, in order to accumulate source technology and increase the import substitution effect, localization of multi-function generator protection IED is being developed. This paper deals with the implementation of a multi-function prototype IED H/W, which can be command and data exchange through communication for measuring, monitoring, protection and control. And the IED specification, various relay elements, measurement elements, communication functions, module function, and test system for the prototype IED H/W are described.

• 한국CDE학회논문집
• /
• 제20권4호
• /
• pp.420-430
• /
• 2015

Operator Training Simulators (OTSs) provide macroscopic training environment for plant operation. They are equipped with simulation systems for the emulation of remote monitoring and controlling operations. OTSs typically provide 2D block diagram-based graphic user interface (GUI) and connect to process simulation tools. However, process modeling for OTSs is a difficult task. Furthermore, conventional OTSs do not provide real plant field information since they are based on 2D human machine interface (HMI). In order to overcome the limitation of OTSs, we propose a new type of plant training system. This system has the capability required for collaborative training between operators and field workers. In addition, the system provides 3D virtual training environment such that field workers feel like they are in real plant site. For this, we designed system architecture and developed essential functions for the system. For the verification of the proposed system design, we implemented a prototype training system and performed experiments of collaborative training between one operator and two field workers with the prototype system.

• 문화기술의 융합
• /
• 제9권5호
• /
• pp.935-940
• /
• 2023

인공지능 및 사물인터넷의 기술 발전에 따라 디지털전환(DX)은 가속화 되고있으며, 디지털전환을 위한 기술은 제조, 생산 라인등 모든 산업의 혁신적인 방안으로 떠오르고 있다. 디지털 전환의 대표적인 기술로 디지털 트윈 기술이 주목받고 있다. 이에, 본 논문에서는 디지털 전환을 위하여 플랜트의 운영 에너지를 최적화하고, 에너지 효율성 향상을 하기위해 미활용 자원을 기반으로 하는 바이오매스 플랜트용 디지털트윈 프로토타입을 구현하고 성능을 평가한다. 제안된 디지털트윈의 프로토타입에서는 프레임워크와 게이트웨이간 표준 통신 플랫폼을 응용하여 양방향으로 실시간 연동이 가능하도록 제안 및 구현한다. 프레임워크는 클라이언트 서버와 게이트웨이간 메시지 시퀀스를 정의하여 호스트 서버와 통신이 가능하도록 인터페이스를 구현한다. 제안된 프로토타입의 성능을 검증하기 위해 서버에서 양방향 데이터를 수집 및 저장하는 가상환경을 설정하여, 데이터양에 따른 성능평가를 진행한다. 제안된 플랫폼에 적용된 알고리즘이 기존 엔진에 비해 향상된 성능을 보여, 미활용 자원을 기반으로 하는 바이오매스 플랜트용 디지털트윈에 적용시 운영 에너지의 최적화와 에너지 효율 향상에 큰 기여를 할 수 있음을 확인할 수 있었다.