• 한국철도학회논문집
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• 제10권4호
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• pp.438-443
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• 2007

This paper proposes an integrated SE process for the development of railway systems with safety assessment included. Although the safety assessment process must be performed with SE process properly with good coordination, the interfaces between the two processes have not been clear. Thus, in many of safety critical system developments in Korea, it is difficult to assess safety in proper development phase. The process model proposed in this paper is based on both the concept of system life cycle and the repetitive use of SE process. In each of development phases, appropriate safety assessment methods are described. Also the evaluation of the integrated system incorporating safety factors is described. The resultant process model is expressed by the Enhanced Functional Flow Block Diagram (EFFBD) using a CASE tool. The model also allows timeline analysis for identifying activity flow and data flow, resulting in the effective management of process. In conclusion, the integrated process enable both the SE process and safety assessment process to cooperate with each other from early development phase throughout the whole system life cycle.

• 품질경영학회지
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• 제41권4호
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• pp.725-735
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• 2013

Purpose: The purpose of this study is to propose an Integrated Safety Evaluation Process (ISEP) that can enhances the safety aspect of the safety-critical system. This process utilizes the advantages of the iterative Systems Engineering process combined with the safety assessment process that is commonly and well defined in many standards and/or guidelines for railway, aerospace, and other safety-critical systems. Methods: The proposed process model is based on the predefined system lifecycle, in each phase of which the appropriate safety assessment activities and the safety data are identified. The interfaces between Systems Engineering process and the safety assessment process are identified before the two processes are integrated. For the integration, the elements at lower level of Systems Engineering process are combined with the relevant elements of safety assessment process. This combined process model is represented as Enhanced Functional Flow Block Diagram (EFFBD) by using CORE(R) that is commercial modelling tool. Results: The proposed model is applied to the lifecycle and management process of the United States aircraft system. The US aircraft systems engineering process are composed of twelve key elements, among which the requirements management, functional analysis, and Synthesis processes are considered for examplenary application of the proposed process. To synchronize the Systems Engineering process and the safety assessment process, the Systems Engineering milestones are utilized, where the US aircraft system has thirteen milestones. Taking into account of the nine steps in the maturity level, the integrated process models are proposed in some phases of lifecycle. The flows of processes are simulated using CORE(R), confirming the flows are timelined without any conflict between the Systems Engineering process and the safety assessment process. Conclusion: ISEP allows the timeline analysis for identifying activity and data flows. Also, the use of CORE(R) is shown to be effective in the management and change of process data, which helps for the ISEP to apply for the development of safety critical system. In this study, only the first few phases of lifecyle are considered, however, the implementation through operation phases can be revised by combining the elements of safety activities regarding those phases.

• 대한조선학회논문집
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• 제46권1호
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• pp.69-77
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• 2009

Loss of human lives and properties including environmental damage due to large scale accidents requires change of our perception to marine safety. IMO is trying to re-establish overall marine safety system through long term plan such as GBS. Along this line, current regulation based safety evaluation is in process of changing into performance based methods, and for this transition, simulation based safety evaluation during design stage considering damage is highly necessary. In this paper, first, damage scenario is developed from IMO regulations and accident case studies. Then an integrated and simulation based safety evaluation prototype system considering both damage stability and structural safety is developed for the use during ship design process.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집D
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• pp.903-908
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• 2001

A web-based client/server program, MOVIDIK(Motor-Operated-Valve Integrated Database Information of KEPCO) has been developed to perform a design basis safety evaluation for a motor-operated-valve(MOV) in the nuclear power plant. The MOVIDIK consists of seven analysis modules and one administrative module. The analysis module calculates a differential pressure on the valve disk, thrust/torque acting at a valve stem, maximum allowable stress, thermal-overload-relay selection, voltage degradation, actuator output and margin. In addition, the administrative module manages user information, approval system and code information. MOVIDIK controls a huge amount of evaluation data and piles up the safety information of safety-related MOV. The MOVIDIK will improve the efficiency of safety evaluation work and standardize the analysis process for the MOV.

• 대한안전경영과학회지
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• 제5권2호
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• pp.67-74
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• 2003

One of the recent trends of cockpit development is to integrate the part of whole cockpit and compartment. The goal of this study is to develop and Analyze User's Convenience for a cockpit prototype based on the design guide of cockpit integration module. The process of this study has been followed analyzing development trend of next generation Automotive cockpit, extracting the design factor needed to making integration module and laying down the design guide of cockpit integration module. After that process, next-generation Automotive cockpit has been embodied as graphical image designing. Henceforth, applying this module to real will be considered after evaluation of utilization. THis study is indicated that one example for evaluation of utilization.

• 대한안전경영과학회지
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• 제9권6호
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• pp.89-96
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• 2007

It is well known that the test and evaluation plan (TEP) is very crucial in the successful development of safety-critical systems. As such, this paper discusses an approach to the development of the TEP for a system that should meet safety requirements in the systems development process. It is studied how to incorporate the result of preliminary hazard analysis (PHA) in generating the safety requirements. It is also discussed how to deal with them when the system requirements (i.e., functions, performance, constraints, components, etc) and the safety requirements are integrated into one model. While doing so, we have constructed the required traceability among them, which is necessary and very useful when the safety requirements need to be corrected or be changed. The use of the traceability makes it possible to easily check out whether and how the safety requirements are properly incorporated in the system design process. Furthermore, without the verified traceability, the system cannot be changed or upgraded later. In order to implement the model on a computer-aided tool, we have constructed a database (DB) schema. As a result, the implemented model/DB allows to automatically generate TEP which can be used to measure the performance and safety level of the developed system.

• 성인간호학회지
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• 제26권5호
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• pp.543-552
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• 2014

Purpose: The purpose of this study was to develop integrated evaluation indicators of home care services in the hope that the increasing group of long-term home care patients could receive quality care services. Methods: The development involves a methodological study on a development phase and a verification phase. The main survey at a verification stage was conducted by the staffs at 146 institutions who agreed to participate on this study. Results: The evaluation index for the integrated home visit care consisted of five categories and 57 indicators including Managing Institution (12), Environment and Safety (3), Right and Responsibility (7), Process of Care (31) and Results of Care (4). The criterion-related validity was verified in regard to the participation in the 2010 evaluation of long-term home-care institutions by the National Health Insurance Corporation. Conclusion: The evaluation index of the integrated home visiting care developed in this study is considered suitable to utilize as evaluating indicators in managing and evaluating the way of how institutions integrate and provide home visit care services as well as home nursing care services.

• 한국가정과교육학회지
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• 제28권1호
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• pp.19-39
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• 2016

이 연구의 목적은 교육과정 분석과 학습자의 요구조사를 통하여 중학교 가정과 수업을 위한 '안전' 주제 중심 통합 교수 학습 과정안을 체계적이고 타당하게 개발하여 가정과교사들이 교실현장에서 안전교육을 용이하게 실시할 수 있도록 안내하여 궁극적으로 청소년들이 안전한 생활을 실천하도록 기여하는데 있다. 이를 위해서 우선, 1차에서 2015 개정 가정과 교육과정의 안전교육 내용의 분석 및 부산지역 여자 중학교 512명을 대상으로 실시한 안전교육 요구도를 바탕으로 안전 내용 요소를 도출하였다. 그리고 주제선정기준에 의해 7가지 통합 주제를 선정하고 각 통합주제별로 주제망을 구성하여 가정과 '안전' 주제중심 교육과정과 학습자료를 개발하였다. 연구 결과, 가정과는 1954년에 제정된 1차부터 2015 개정 교육과정 시안에 이르기까지 안전에 대한 내용을 지속적으로 표기하고 있었다. 학생들의 안전교육 요구가 가장 높게 나온 내용요소는 성폭력 및 성매매 예방과 대처방법이고 자살예방 및 대처방법, 집단따돌림 순으로 높게 나타났으며 가장 낮게 나온 항목이 정리정돈이고 42개 모든 항목에서 '필요하다' 이상의 결과를 나타내었다. 이 연구에서 개발한 가정과 수업을 위한 '안전' 주제 중심 통합 교육과정은 식생활안전, 청소년의 성과 안전, 청소년의 친구관계와 안전, 가족생활과 안전, 주생활과 안전, 청소년의 자아와 안전, 사회 환경과 안전의 7가지 통합주제를 선정하고, 각 통합주제에 따라서 3~6개씩 총 28개의 소주제(35차시 분)가 구성되었으며 이를 교실현장에서 손쉽게 실행할 수 있도록 구체적으로 안내하는 교수 학습 과정안 총 28편(35차시분량),과 다양한 학습자료 (PPT 28개, 동영상자료 25편, 읽기자료 4편, 학습지 61개, 활동지 14개, 평가지 16개, 테스트지 3개, 참고자료 2개, 학습자료 모형 4개(냉장고 모형, 토론신호등, 식판모형과 음식스티커, 푸드마일리지 카드)로 총 157개를 개발하였다. 본 연구는 7개 통합 주제를 중심으로 교육과정 개발에 초점이 있기에 우선순위에서 제외된 의생활과 안전, 갈등과 안전, 직업생활과 안전, 소비생활과 안전 주제 중심 교육과정 개발과 함께 이를 현장에 적용하여 학생들의 안전의식과 행동 및 태도변화에 대한 후속연구가 필요하다.

• 대한안전경영과학회지
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• 제16권2호
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• pp.31-42
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• 2014

As weapon systems become complex in terms of the scale and functionality, the required time to complete the test and evaluation (T&E) process is inevitably getting longer. However, nowadays the reduction of T&E period becomes one of the core targets in the weapon systems acquisition programs. This is because the reduced time for T&E process can yield the reduction of defense budget and also faster deployment of the weapon systems, thereby having a competitive edge over rival countries. On the other hand, in weapon systems development the management of reliability, availability, maintainability and safety (RAMS), and risk is considered important to keep competitiveness and thus has been carried out separately. Thus, the objective of this paper is to study on improving the T&E process by integrating the RAMS and risk management process in it. To do so, the related processes are analyzed and modeled first. Then an integrated process model is developed. The resulting model is equipped with the traceability among the data and interfaces that are generated from the T&E and RAMS/risk processes. As a case study, the model developed is applied in tanks development. The effective use of the traceability is expected to reduce the time and cost required to complete T&E process.

• 대한안전경영과학회지
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• 제4권3호
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• pp.107-122
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• 2002

There are two approaches to process control. The one is engineering process control(EPC) which is one of the techniques very widely used in the process industry and based on control theory which aims at keeping the process on target using manipulating variable. The other is statistical process control(SPC) whose main purpose is to look for assignable causes(variability) in the process. To design an integrated or combined scheme of SPC and EPC is gaining recognition in the process experiences for hybrid industry. This paper aims to investigate recent study concerned on the integration of SPC and EPC. First, we consider the difference between SPC and EPC in simple terms and review various models of EPC for integration including evaluation of previous study. Finally, we suggest some prospective research area concerned on the integration of SPC and EPC.