• Title/Summary/Keyword: A Feasibility Assessment

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AGING ASSESSMENT OF CANDU PLANT MAJOR COMPONENTS

  • Jeong, Il-Seok;Lee, Kyoung-Soo;Kim, Tae-Ryong
    • Proceedings of the Korea Society for Energy Engineering kosee Conference
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    • 2003.05a
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    • pp.415-423
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    • 2003
  • Korea Electric Power Research Institute(KEPRI) had worked a comprehensive Plant Lifetime Management (PLiM) project for a CANDU plant in corporation with Korea Hydro and Nuclear Power(KHNP). The project had been performed to understand the aging status of major components screened from the plant and to address provisions for the continued operation over its design life. A feasibility of the continued operation was reviewed in the aspects of technology, economics, and regulatory environments. This paper introduces general approach of aging assessment, screening of critical components and an experience of aging assessment for an example of fuel channel that is the most critical component in CANDU plant.

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Cost Normalization Procedure for Phase-Based Performance Measurement

  • Choi, Jiyong;Yun, Sungmin;Oliveira, Daniel;Mulva, Stephen;Kang, Youngcheol
    • International conference on construction engineering and project management
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    • 2015.10a
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    • pp.72-76
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    • 2015
  • Capital project benchmarking requires an effective cost normalization process to compare cost performance of projects accomplished in different time and location. Existing cost normalization approaches have been established based on the assumption that all required information for cost normalization is fully identified once a project is completed. Cost normalization, however, is sometimes required to evaluate phase-level outcomes of an ongoing project where the required information is not fully available. This paper aims to provide a cost normalization procedure for phase-based performance assessment. The procedure consists of three normalization steps: currency conversion, location adjustment, and time adjustment considering various scenarios where the required information is not fully identified. This paper also presents how the cost normalization procedure has been applied to the 10-10 Performance Assessment Program, which is a phase-based performance assessment system developed by the Construction Industry Institute (CII). Both researchers and industrial professionals can apply the cost normalization procedure to studies and practices regarding to cost estimation, feasibility analysis, and performance assessment.

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A Study on Reliability Estimation of Sequential-ordered Multiple Failure Modes in Nuclear System (원자력시스템에서 순차적 다중실패상태의 신뢰도 평가 방법에 관한 고찰)

  • Han, Seok-Jung
    • Journal of the Korean Society of Safety
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    • v.26 no.4
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    • pp.7-13
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    • 2011
  • A study on reliability estimation of sequential-ordered multiple failure modes, which are sequentially ordered between failure modes in a considering system, was performed. Especially, an approach to estimate the probabilities of failure modes has been proposed under an assumption that failure modes are mutually exclusive and sequentially ordered by only a critical variable. A feasibility of the proposed approach were studied by a practical example, which is a reliability estimation of passive safety systems for a probabilistic safety assessment(PSA) of a very high temperature reactor(VHTR) that is under development as a future nuclear system with enhanced safety features. It is difficult to define a robust failure state of this nuclear system because of its enhanced radiation release characteristics, so the new approach is a useful concept to estimate not only its safety but also a PSA. A feasibility study applied two failure modes(e.g., small and large release of radioactive materials) with considering the integrated behavior of this nuclear system. It is expected that the multiple release states for a practical estimation can be easily extended to the aforementioned example. It was found out that the proposed approach was a useful technique to cover the unfavorable features of this nuclear system as to performing a VHTR PSA.

Development of Quality Assessment Tool and Application to Customer-Oriented Hospital Foodservice Management (고객지향적 병원 급식서비스 운영을 위한 질 평가 도구 개발 및 적용)

  • 이해영;장승희;양일선
    • Journal of Nutrition and Health
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    • v.37 no.4
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    • pp.329-338
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    • 2004
  • The purposes of this study were to : a) develop the quality assessment tool of hospital foodservice management, b) evaluate the S hospital's foodservice quality by this tool, and c) do the feasibility study about this tool in hospital food-service field by establishing quality management strategies. The developed quality assessment tool of hospital food-service management was consisted of 20 items for quality evaluation by Likert 5 point scale and two additional questions with the most satisfactory item and the most unsatisfactory item. As a result of evaluation, S hospital's foodservice quality was somewhat high, on the factor 'personnel attitude', especially. The IPA technique proved nine items including Q5, Q7, Q8, Q11, Q12, Q13, Q15, Q16, Q17 were in 'Doing Great, Keep It Up' and seven items such as Q1, Q2, Q3, Q6, Q9, Q18, Q19 that got high expectation and low perception needed to be focused in quality management strategy.

Feasibility Study the Assessment Factor of Quality Performance Index in Expressway Concrete Pavement (고속도로 콘크리트 포장에 대한 품질평가지수 평가인자의 적정성 검토)

  • Lee, Seung Woo;Kim, Gyung il;Ko, Dong Sig;Hong, Seung Ho
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.37 no.1
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    • pp.133-141
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    • 2017
  • Traffic volume increases according to highway expansion and industrial development which causes repetitive defect and durability degradation on pavement. The research of quality assurance system used abroad has introduced Korea. Korea Expressway Corporation (KEC) has developed a Quality Performance Index (QPI) that quantitatively assesses the level of quality of the final product, and practical applications. Assessment factor on concrete pavement consisted of pavement thickness, compressive strength, IRI and spacing factor. Assessment factor on concrete pavement is determined by empirical evaluation factor from abroad. In this study, analysis of evaluation factors of concrete pavement by using pavement life prediction simulation and measured data were evaluated with consideration of feasibility of the assessment factor. Pavement life, performance and durability are affected by pavement thickness, compressive strength, IRI and spacing factor in assessment factor on concrete pavement, QPI.

Feasibility of Household Surveys for Population Risk Assessment of Cancer and Cancer Registration Support

  • Habib, Omran S;Hussain, Riyadh Abdul-Ameer
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.sup3
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    • pp.213-218
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    • 2016
  • Cancer is a major health problem in the Arab region including Iraq. An adequate database is essential for effective cancer control strategies. Such a database may be provided through cancer registration but supportive household surveys may be useful. This article reports selected results on the feasibility of household surveys to support and validate cancer registration in Basrah governorate - southern Iraq. A large scale multi-stage cluster sample household survey was carried out in Basrah during 2013. It covered 6,999 households and involved gathering data on demographic characteristics and both incident cancer cases and cancer-related deaths among members of these households during a three-year recall period (2010-2012). The data obtained yielded an average annual incidence rate of 91 per 100,000 population (age-standardized incidence rate of 148.8 /100,000) and cancer specific mortality rate of 68 per 100,000 population (age-standardized mortality rate of 126.3/100,000). The results showed an overall pattern of cancer similar to that reported according to cancer registration but the household survey results were consistently higher than those of the cancer registration by a margin of approximately 20- 30% with respect to incident cancer and about 70 % with respect to cancer-specific mortality. Household surveys on cancer, while costly and time consuming, are a very useful additional source of information on cancer at the population level. They can be performed for specific purposes with effective resource mobilization.

A Research on the Development of Evaluation Indicators for Academic Libraries (대학도서관 평가 지표의 개발에 관한 연구)

  • Kwack, Dong-Chul;Yoon, Cheong-Ok
    • Journal of the Korean Society for Library and Information Science
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    • v.45 no.2
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    • pp.309-324
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    • 2011
  • The purpose of this study is to develop evaluation indicators for academic libraries in Korea. The evaluation model developed in this research consists of three elements:(1) Confirmation of evaluation methods, procedures and criteria,(2) Development of qualitative and quantitative evaluation indicators, and(3) Assessment of the applicability and feasibility of those indicators. Evaluation indicators were developed to measure a basic state, a common use of library resources, specialized services, and user satisfaction for academic libraries. To test the feasibility and applicability of those evaluation indicators, a pilot assessment of academic libraries was conducted in 2010.

DEVELOPMENT OF A VULNERABILITY ASSESSMENT CODE FOR A PHYSICAL PROTECTION SYSTEM: SYSTEMATIC ANALYSIS OF PHYSICAL PROTECTION EFFECTIVENESS (SAPE)

  • Jang, Sung-Soon;Kwan, Sung-Woo;Yoo, Ho-Sik;Kim, Jung-Soo;Yoon, Wan-Ki
    • Nuclear Engineering and Technology
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    • v.41 no.5
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    • pp.747-752
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    • 2009
  • A vulnerability assessment is essential for the efficient operation of a physical protection system (PPS). Previous assessment codes have used a simple model called an adversary sequence diagram. In this study, the use of a two-dimensional (2D) map of a facility as a model for a PPS is suggested as an alternative approach. The analysis of a 2D model, however, consumes a lot of time. Accordingly, a generalized heuristic algorithm has been applied to address this issue. The proposed assessment method was implemented to a computer code; Systematic Analysis of physical Protection Effectiveness (SAPE). This code was applied to a variety of facilities and evaluated for feasibility by applying it to various facilities. To help upgrade a PPS, a sensitivity analysis of all protection elements along a chosen path is proposed. SAPE will help to accurately and intuitively assess a PPS.