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RISS 인기검색어
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- 저자 : Ohaga, Eric Owino (검색결과 2 건)
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Systems Engineering approach to Reliability Centered Maintenance of Containment Spray Pump
이용관,정재천,Ohaga, Eric Owino,Lee, Yong-Kwan,Jung, Jae Cheon 한국시스템엔지니어링학회 2013 시스템엔지니어링학술지 Vol.9 No.1
This paper introduces a systems engineering approach to reliability centered maintenance to address some of the weaknesses. Reliability centered maintenance is a systematic, disciplined process that produces an efficient equipment management strategy to reduce the probability of failure [1]. The study identifies the need for RCM, requirements analysis, design for RCM implementation. Value modeling is used to evaluate the value measures of RCM. The system boundary for the study has been selected as containment spray pump and its motor drive. Failure Mode and Criticality Effects analysis is applied to evaluate the failure modes while the logic tree diagram used to determine the optimum maintenance strategy. It is concluded that condition based maintenance tasks should be enhanced to reduce component degradation and thus improve reliability and availability of the component. It is recommended to apply time directed tasks to age related failures and failure finding tasks to hidden failures.
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Selection of Architect Engineering Concept for Barge Mounted SMR Using Systems Engineering Approach
Hossen, Muhammed Mufazzal,Owino, Ohaga Eric,Jung, J.C. The Korean Society of Systems Engineering 2014 시스템엔지니어링학술지 Vol.10 No.1
The trade-off studies in the concept development stage to assess the relative goodness of alternative systems concepts for AE (architect engineering) design for the Barge Mounted SMR (BMSMR) is introduced. With respect to design margin, system performance, schedule and risk, the design selection is cond ucted using the following characteristics; barge mobility, system safety under the natural disaster (seismic), power output, interfacing with the other system, and the additional supporting functions as desalination. There are three findings that should be remedied; deficiencies in the assumed characteristics of the system being modeled, deficiencies in the test model, and excessively stringent system requirements. This study is performed using systems engineering approach with trade off matrix method. In order to execute this work, concept development stage is divided into three (3) phases as NA (needs analysis), CE (concept exploration), and CD (concept definition).
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