초록 ▼

1. 연구결과
○ 안전기기 스마트화 기본설계
-. 안전밸브 고장모드/영향분석
-. ICT 융합 스마트 밸브 아키텍처 설계 및 제작
○ 누출 및 고장계측 알고리즘 개발
-. 누출계측 시스템 소형화 설계 및 제작
-. 메탄 누출 전산 시뮬레이션
-. 메탄 누출 계측 실험
-. 센서 및 계측시스템 일체형 Pilot 제작
-. 누출 감지 및 고장계측 성능 실험
-. 누출계측 결과를 토대로한 누출진단 알고리즘 개발
○ 스마트 안전기기 시제품 개발 및 성능실험
-. 나노기반 누출

1. 연구결과
○ 안전기기 스마트화 기본설계
-. 안전밸브 고장모드/영향분석
-. ICT 융합 스마트 밸브 아키텍처 설계 및 제작
○ 누출 및 고장계측 알고리즘 개발
-. 누출계측 시스템 소형화 설계 및 제작
-. 메탄 누출 전산 시뮬레이션
-. 메탄 누출 계측 실험
-. 센서 및 계측시스템 일체형 Pilot 제작
-. 누출 감지 및 고장계측 성능 실험
-. 누출계측 결과를 토대로한 누출진단 알고리즘 개발
○ 스마트 안전기기 시제품 개발 및 성능실험
-. 나노기반 누출센서 장착, 유/무선 통신 모듈 및 고장계측 프로세서 개발/제작
-. 누출진단 알고리즘 검증
-. SIL 향상 방안 도출
2. 연구결과 활용계획
○ 다양한 플랜트 기자재에 대한 자기 진단 기능과 통신 기능을 부가하는 스마트화에 활용하여, 궁극적으로 최신 IT기술을 접목하는 차세대 IT융합 플랜트 건설 기술 도입에 활용
○ 개발될 스마트 안전기기에 대한 원천기술을 바탕으로 핵심기기의 안전기능을 강화한 스마트기기 기술에 대한 기술이전 추진
○ IT 컨버젼스 기술 창출로 새로운 부품 및 장치산업 육성에 활용

Abstract ▼

In order to strengthen the competitiveness and bring a high price of main components or the equipment for energy plants, it is necessary to develop smart components. A smart component, which is defined as an augmented version of standard component, embodies elemental smart components such as sensors

In order to strengthen the competitiveness and bring a high price of main components or the equipment for energy plants, it is necessary to develop smart components. A smart component, which is defined as an augmented version of standard component, embodies elemental smart components such as sensors, data transmission devices, computer hardware and software, and MMI (Man-Machine-Interface) devices that continuously monitor the state of health of the equipment in terms of failure modes and remaining useful life, to predict degradation and potential failure and inform end-users of the need for maintenance or system-level operational adjustments and it can improve the overall system performance including the reliability, the safety, and the availability of energy plants.
Therefore, the main objective of the present research is to develop of the smart component technology for the plant safety. For the purpose, we try to determine a smart component for the plant safety through the process analysis of the natural gas plant and we decided to choose a air operated shut-off valve as a target component. By using the existing failure rate data base for main components of energy plants, failure mode analysis was performed and we found that the major cause of the valve failure comes from the internal leakage or external leakage of the valve body.
In this work, an algorithm for leak detection is developed. For this, experiments are performed in order to detect leakage from the valve body. First of all, a nanoscale composite sensor was developed, which can measure concentration of the methane gas under 50 ppm. This sensor has the sensitivity of 60% in concentration of 100 ppm. From the experiments using commercial concentration sensors and nanoscale composite sensors, relationships between the leak position, leak rates and concentration sensor positions are obtained. Based on experimental results and the relationships between the leak position, leak rates and concentration sensor positions, the algorithm for leak detection can be developed. The leak detection algorithm is evaluated from other experiments. As a result, the reliability of leak position detection is almost 100%. Also, the reliability of leakage rate detection is 95% with ±40% uncertainty.
Finally, an ICT based smart sensor architecture for diagnosis of leakage from a valve, which has a function of wireless communication, is designed and manufactured.