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송태영,Song, Tae-Young 한국압력기기공학회 2013 한국압력기기공학회 논문집 Vol.9 No.1
In around 2000, the U.S. NPPs have developed the various advanced engineering processes based on the INPO AP-913(Equipment Reliability Process Description) and showed the high performance in availability. With these benchmarking cases, the Korean NPPs have introduced the advanced engineering technology since 2005. The first step of the advanced engineering is to analyze and determine component importance for all components of a plant. This process is called Functional Importance Determination(FID). These results are basically utilized to determine the priority with limited resources in various areas. However, because the consistency of FID results is insufficient despite applying the same criteria in the existing operating NPPs, the degree of application is low. Therefore, this paper presents the improved methodology for FID interfacing system functions of Maintenance Rule Program and results of Single Point Vulnerability(SPV). This improved methodology is expected to contribute to enhance the reliability of FID data.
송태영,Song, Tae-Young 한국압력기기공학회 2014 한국압력기기공학회 논문집 Vol.10 No.1
Nuclear power plants(NPPs) are consisted of power production functions and safety functions preventing leakage of radiation. Operators working in NPPs shall maintain these functions during an operation period through various activities such as improvement & modification, corrective maintenance, preventive maintenance and surveillance test. According to the performance of these work activities, there are configuration changes in NPPs systems. Its changes cause the increase of safety risks(CDF) and plant trip risks. Recently, the importance of risk management is increasing gradually in the operation process of NPPs. Therefore, this paper presents the work management methods using the various risk monitoring systems during power operation and overhaul period. Also this paper suggests the optimum application ways of risk systems for work management.
원전 정비효과성감시 프로그램의 성능기준설정 방법론 개선
송태영,염동운,현진우,Song, Tae-Young,Yeom, Dong-Un,Hyun, Jin-Woo 한국압력기기공학회 2012 한국압력기기공학회 논문집 Vol.8 No.2
The systems of the nuclear power plant are designed based on the User Requirement Document, and Korea Hydro & Nuclear Power Co. (KHNP) implements preventive maintenance activities to keep the specific design function of the system consistently. To monitor the preventive maintenance effectiveness, KHNP has also developed maintenance effectiveness monitoring (MR) program based on NUMARC 93-01 since 2003, and has implemented the program in all operating plants. Recently, KHNP has upgraded MR programs by reflecting implementing experiences ; reestablishing the performance monitoring level, improving analysis for standby function and performance criteria for passive components, reestablishing the availability performance criteria and the performance criteria for the same type of components. These upgraded MR programs will contribute to enhance safety and improve equipment reliability through monitoring maintenance effectiveness.
Development and Clinical Reliability of a Measuring Device for Bite Force
송태영,김기석,Song, Tae-Young,Kim, Ki-Suk The Korean Academy of Orofacial Pain and Oral Medi 2001 Journal of Oral Medicine and Pain Vol.26 No.3
지금까지 여러 가지 형태의 기기를 이용하여 보고된 사람의 교합력은 그 최대치가 매우 다양하다. 본 연구에서는, 교합력을 측정하기 위하여 새로운 측정기기를 개발하였다. 본 기기를 이용하여 전치부 교합력 측정 시에는 대칭적으로 최대한 물도록 하악을 유도하여 최대 교합력을 측정하였고, 구치부는 편측으로 물도록 하악을 유도하여 최대 교합력을 측정하였다. 교합 시 치아간 수직고경은 15.1mm 였다. 측정기기 내 strain gauge를 사용하여 전기저항의 변화를 힘으로 전환하였다. 마이크로 프로세서가 수치를 계산하면 액정화면에 수치가 표시된다. 실험실 내 기기교정 검사에서는 50kg과 100kg의 부하를 가하였다. 개발된 교합력 측정기기의 임상적 신뢰도를 시험하기 위해 건강한 치과대학 재학생 10명을 대상으로 최대 교합력을 측정 하였다. 이 새로운 측정기기로 측정된 교합력은 이전연구에서 기록되었던 것보다 더 높은 수치가 나왔다. 또한 제1대구치와 전치부에서 최대 교합력을 측정한 경우 실험자 내와 실험자 간에 통계적으로 유의한 신뢰성을 얻을 수 있었다. 본 기기는 안정적이고 조작성이 쉽다고 판명되었다. 그러므로, 본 기기는 더 큰 연구 집단의 선별검사에 매우 유용하게 사용할 수 있을 것이며, 또한 치주질환이 있는 치아나 임플란트, 악관절 장애를 가진 환자의 교합력 측정과 같이 특정된 경우의 교합력 측정에도 유용할 것이다.
허남용,김영갑,송태영,Hur, Nam Young,Kim, Young Gab,Song, Tae-Young 한국압력기기공학회 2014 한국압력기기공학회 논문집 Vol.10 No.1
Korea Hydro & Nuclear Power Co.,LTD(KHNP) was strongly interested in promotion of employee's Safety Culture because it is needed to change the recognition of Safety Culture after the Fukushima accident and Kori-1 blackout event. So, KHNP developed the KHNP Safety Culture Definition, Principles and Attributes and shared them with all employees. By using them, Safety Culture Assessment for a site plant employees was carried out. Through the pilot Safety Culture Assessment in 2012, In 2013, it was expanded to 6 plants and various improvements had been obtained from that. KHNP has been developing a variety of training materials, Safety Culture posters, videos which was designed to give lessons about safety culture with a variety of event cases. And keep trying to form Safety Culture Circumstances In this study, statistic methods are used to verify the effectiveness of KHNP Safety Culture Principles and Safety Culture Assessment.
이상훈,김제헌,송태영,Lee, Sang-Hoon,Kim, Jae-Hun,Song, Tae-Young 한국압력기기공학회 2014 한국압력기기공학회 논문집 Vol.10 No.1
An Operating Experience Report(OER) has written about events and accidents happened at a Nuclear Power Plant(NPP). The purpose of publishing the OER is to prevent the similar event or accident repeatedly by spreading the experience of a single plant to other plants personnel. In this paper, it is analyses that the foreign NPPs' OERs on JIT published by the International Nuclear Agency(WANO, INPO, COG, BE). The analysis introduced in this paper is performed along with the various factors such as type of work, root-cause, and equipment. The root-cause analysis about the OERs shows that the Human-error is the major factor in foreign NPPs, but on the other hand equipment problem is the main part of the Domestic NPPs. The ratio of the foreign NPP's OERs on JIT according to the type of work was applied to KHNP-JIT developed nowadays for the first time in KOREA.