• Title/Summary/Keyword: Safety design and operation

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Determination of Design Basis for a Storage System for Spent Fuel in Korea (국내 사용후핵연료 저장시스템의 설계기준 설정 인자 고찰)

  • Yoon, Jeong-Hyoun;Lee, Eun-Yong;Woo, Sang-In;Kim, Tae-Man
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.9 no.2
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    • pp.113-119
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    • 2011
  • Safe operation and maintenance of engineered dry storage systems for spent fuel from nuclear power plants basically depends on adequately adopted design requirements. The most important design target of the system are those which provide the necessary assurances that spent fuel can be received, handled, stored and retrieved without undue risk to health and safety of workers and the public. To achieve these objectives, the design of the system incorporates features to remove spent fuel residual heat, to provide for radiation protection, and to maintain containment over the lifespan of the system as specified in the design specifications. The features also provide for all possible anticipated operational occurrences and design basis events in accordance with the design basis as guided by the designated regulations. The general performance requirements of a projected storage system are introduced in this paper. The storage system is designed to store fuel assemblies in associated with designated regulatory requirements. Small increases/decreases in maximum burnup can be adjusted with cooling time. These variations are compensated for by a corresponding small site-specific increase/decrease in the design basis-cooling period, as long as the maximum heat load and radioactivity of loaded fuel assemblies are met. Generic design basis events considered for the storage system are summarized. Shielding and radiological requirements along with mechanical and structural are derived in this study.

A Study on the Unmanned convenience Store Operation System from the Viewpoint of Visual Merchandising (비주얼 머천다이징 관점에서의 무인 편의점 운영시스템에 관한 연구)

  • Seo, Jung-Hwa;Yang, Hoe-Chang;Park, Chul-Ju;Youn, Myoung-Kil
    • The Journal of Industrial Distribution & Business
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    • v.9 no.12
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    • pp.45-53
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    • 2018
  • Purpose - The purpose of the study was to investigate operation system of current convenience store and competing retail store and to find out development of unattended convenience store. Operators can save labor cost and solve labor seeking when opening shop under suitable environment and commerce area, and assure of employee's safety. Customers are allowed to select commodity comfortably without disclosure of face and to shorten standby time at simple store opening, buying and paying and to produce convenient living environment by financing, delivery and goods control. This study examined effect and problems of operation of existing and unattended convenience store from point of view of visual merchandising to find out model of unattended convenience store and to strengthen competitiveness of convenience store business. Research design, data, and methodology - Research procedure of accomplishment of goal of the study was: The study investigated state of distribution business, and role and definition of VMD. First, VMD played an important role of promotion and competitiveness of unattended convenience stores. Second, the author investigated research and cases of unattended convenience stores 14 months, that is to say, from August 15, 2017 to October 15, 2018. Third, the author investigated on-the-spot three of common convenience stores, three of unattended convenience stores and three of retailers one month, that is to say, June 1, 2018 to July 1, 2018. The subject was convenience stores and retailers selling similar type of products at Seoul and metropolitan area. Results - Layout, selling place, brand identity, goods assortment, authentication system, product information cognition and control, buying and payment system, security system, salesmen, promotion and other services should be improved from point of view of merchandising. Structure, furniture, lighting, voice, façade, VP, PP, IP and POP should be developed. Conclusions - Unattended convenience stores saved operating cost and lessened labor and gave visitors convenience and comfortable shopping and made use of resources effectively. Further studies with quantitative analysis shall find out strategic conditions for promotion of unattended convenience stores.

A Study on the Recognition of Athletes toward Human Rights Violations in Korea

  • KWON, Yeon Taek;KWON, Ki Hyun;SEO, Won Jae
    • Journal of Sport and Applied Science
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    • v.5 no.2
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    • pp.31-38
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    • 2021
  • Purpose: A new form of sports human rights platform is needed for policy-related officials, athletes, leaders, and parents to easily share information on sports human rights and to promote communication between the sports community and the outside. Research design, data, and methodology: Participants were collected from athletes (n=3,007) who were registered in Korean Sport & Olympic Committee. Participants were asked to respond the survey items measuring their experiences of human right violations in sport. Descriptive analysis, t-test, and ANOVA were used to analyze data. Results: The platform should include information on prevention and safety of human rights violations during sports activities, procedures and methods for reporting damage, countermeasures, leader education programs, human rights protection guidelines, roles and supervision of sports organizations and institutions, and related statues. It can form a community as well as exchange information in the Internet space through the operation of bulletin boards by professional athletes, student athletes, parents, and leaders, and plays a role in crisis counseling or information provision. Given the reality that players can be blocked from the outside world, information communication channels on SNS can be a useful means of protecting and improving players' human rights. Conclusions: Therefore, it is necessary to provide a foundation for creating related platforms so that sports human rights sites or SNS can be operated voluntarily. Implications and future directions were discussed.

Analysis of Existing Guidelines and Randomized, Controlled, Clinical Trials for Development of [Guideline of Clinical Trial with Herbal Medicinal Product for gastric cancer] (위암 한약제제 임상시험 가이드라인 개발을 위한 한약제제 무작위배정 대조군 임상시험 고찰)

  • Han, Gajin;Seong, Sin;Kim, Sungsu;Kim, Jinsung;Park, Jae-Woo
    • The Journal of Korean Medicine
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    • v.38 no.3
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    • pp.124-142
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    • 2017
  • Objectives: This study aimed to learn what should be considered in [Guideline of Clinical Trial with Herbal Medicinal Product for Gastric Cancer)] by analyzing the existing guidelines and clinical trials. Methods: The development committee searched guidelines for herbal medicinal product or gastric cancer developed already. Then, clinical trials for gastric cancer using herbal medicine were searched. The searched trials were analyzed in terms of inclusion and exclusion of participants, intervention, comparator, outcomes and trial design. Then, we compared the results of analysis with the regulations and guidelines of Ministry of Food and Drug Safety to suggest the issue that we will have to consider when making the [Guideline of Clinical Trial with Herbal Medicinal Product for Gastric Cancer]. Results: As a result, few guidelines for anti-tumor agent and clinical trial with herbal medicinal product were searched in the national institution homepage. In addition, 10 articles were searched by using the combination following search term; 'stomach neoplasm', 'herbal medicine', 'Medicine, Korean traditional', 'Medicine, Chinese Traditional', 'TCM', 'TKM', 'trial'. Most trials included gastric cancer participants with medical history of operation. The type of intervention was various such as decoction, granules, and fluid of intravenous injection. Comparators were diverse such as placebo, conventional treatment including chemotherapy and nutritional supplement. The most frequently used outcome for efficacy was quality of life. Besides, the symptom score, tumor response, and survival rate were used. Safety was investigated by recording adverse events. Conclusion: We found out some issue by reviewing the existing guidelines and comparing it with clinical trials for gastric cancer and herbal medicinal products. These results will be utilized for developing [Guideline of Clinical Trial with Herbal Medicinal Product for Gastric Cancer].

Investigating the Factors on Public Transportation System for Citizen Relationship and Sustainability

  • YOO, Jiin;CHO, Yooncheong
    • The Journal of Industrial Distribution & Business
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    • v.13 no.3
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    • pp.13-24
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    • 2022
  • Purpose: The purpose of this paper is to investigate key factors that affect customer dissatisfaction on public transportation system by highlighting the necessity of citizen participation and improved management of advanced technology for sustainability. Research questions applied in this study include following; i) how are factors on dissatisfaction related to types of transportation modes; ii) how do perceived proposed factors affect citizen dissatisfaction; iii) how do the improvement of public transportation service affect the level of expected satisfaction; and iv) how do expected satisfaction affect policy agreement and government trust. Research design, data and methodology: For qualitative research, civil opinions were collected and chi-square analysis was applied using keywords. For quantitative research, online survey was collected and factor and multiple regression analyses were applied. 3) Results: This study found that efficiency of operation system and safety on dissatisfaction showed significant in all three public transportation modes. This study found that perception of government policy and trust on government will increase as expected satisfaction increases. Conclusions: This study provides managerial and policy implications on society and policy makers by addressing necessity of improving strategies for public transportation system with the consideration of citizen relationship management and sustainable development.

Real-time Network Middleware Supporting Fault-Tolerant Operations for Personal Robot System

  • Choo, Seong-Ho;Park, Hong-Seong
    • 제어로봇시스템학회:학술대회논문집
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    • 2005.06a
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    • pp.756-760
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    • 2005
  • By development of a robot technology, personal robot is being developed very actively. Various infra-technologies are accumulated in hardware and software how by internal a lot of research and development efforts, and it is circumstance that actual commodity is announced. But, personal robot is applied to be acting near human, and takes charge of safety and connected directly a lot of works of home security, gas-leakage, fire-warning facilities, or/and etc. So personal robot must do safe and stable action even if any unexpected accidents are happened, important functions are always operated. In this paper, we are wished to show design structures for supporting fault-tolerant operation from our real-time robot middleware viewpoint. Personal robot, in being developed, was designed by module structure to do to interconnect and to interoperate among each module that is mutually implemented by each research facilities or company. Also, each modules can use appreciate network system that is fit for handling and communicating its data. To guarantee this, we have being developed a real-time network middleware, for especially personal robot. Recent our working is to add and to adjust some functions like connection management, distributed routing mechanism, remote object management, and making platform independent robot application execution environment with self-moving of robot application, for fault-tolerant personal robot.

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Guideline for the Diagnose of Geotechnical Structure (Underground Oil Storage Cavern) using a Microseismic Monitoring System (음향미소진동기반 모니터링 시스템을 이용한 지반구조물(유류 지하저장시설) 진단평가 가이드라인)

  • Cheon, Dae-Sung;Jung, Yong-Bok
    • Tunnel and Underground Space
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    • v.28 no.4
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    • pp.293-303
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    • 2018
  • Monitoring is the act of collecting and analyzing accurate engineering information using various methods and instruments. The purposes of the monitoring are design verification, construction management, quality control, safety management, and diagnose of structure etc.. The diagnose evaluation of the geotechnical structures corresponds to the confirmation of the structural performance. It is aimed to judge the soundness of geotechnical structures considering the degree of damage due to the environmental change and elapsed time. Recently, microseismicity, which is widely known in Korea, can be used for safety management and diagnoses of structure as it detects the micro-damage without disturbance of the structure. This report provides guideline on the procedure for assessing an underground oil storage cavern using microseismic monitoring techniques. Guidelines cover the selection of monitoring systems, sensor array, sensor installation and operation of systems, and interpretation.

A Study on the Improving Design of the Training Ship's Bridge (실습선 선교의 개선 설계에 관한 연구)

  • Lee, Hong-Hoon;Kim, Chol-Seong;Yang, Won-Jae;Jong, Jae-Yong;Park, Jong-Hwan
    • Proceedings of KOSOMES biannual meeting
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    • 2007.11a
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    • pp.161-167
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    • 2007
  • There were no related papers to study about that training ship's bridge was designed for safety navigation and efficient navigation training. Therefore, at first, on this paper, we grouped domestic training ship's bridge layouts into three classes like as "the front and the rear-type bridge layout", "the twin deck-type bridge layout", and "the single-type bridge layout" by mutually layout type between main bridge and training bridge. Furthermore, we investigated working type of navigation training on each bridge layouts through the questionnaire, and extracted merits and demerits for each bridge layouts to be going on operation and training at the same time. At last, we presented new type training ship's bridge model to improve demerits and to elevate merits above mentioned.

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Fatigue Strength Evaluation of Bogie Frame for Power Car (동력차용 대차프레임의 피로강도평가)

  • Lee, Hak-Ju;Han, Seung-U;Augagneur Sylvain;Lee, Sang-Rok
    • 연구논문집
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    • s.27
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    • pp.57-73
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    • 1997
  • The bogie between the track and the railway vehicle body, is one of the most important component in railroad vehicle. Its effects on the safety of both passengers and vehicle itself, and on the overall performance of the vehicle such as riding quality, noise and vibration are critical. The bogie is mainly consisted of the bogie frame, suspensions, wheels and axles, braking system, and transmission system. The complex shapes of the bogie frame and the complicate loading condition (both static and dynamic) induced in real operation make it difficult to design the bogie frame fulfilling all the requirements. The complicated loads applied to the bogie frame are i) static load due to the weight of the vehicle and passengers, ii) quasi-static load due to the rolling in curves iii) dynamic load due to the relative motion between the track, bogie, and vehicle body. In designing the real bogie frame, fatigue analysis based on the above complicated loading conditions is a must. In this study, stress analysis of the bogie frame has been performed for the various loading conditions according to the UIC Code 6 15-4. Magnitudes of the stress amplitude and mean stress were estimated based on the stress analysis results to simulate the operating loads encountered in service. Fatigue strength of the bogie frame was evaluated by using the constant life diagram of the material. 3-D surface modelling, finite element meshing, and finite element analysis were performed by Pro-Engineer, MSC/PATRAN, and MSC/NASTRAN, respectively.

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Comparative Analysis of On-site Construction Management in Korea and Japan (건설현장 관리기술에 대한 한·일간 비교분석 예비연구)

  • Song, Sang-Hoon;Sohn, Jeon-Grak
    • Journal of the Korea Institute of Building Construction
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    • v.10 no.6
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    • pp.27-38
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    • 2010
  • Considering the similarity in legislation and long-term industrial trend of Korea and Japan, continuous attention to the Japanese situation is useful for the development of a domestic construction strategy. In order to compare the current on-site construction management practice of the two countries and analyze the reasons for discrepancy, a literature review, expert interview, and site investigation were executed. A detailed survey of experts with experience in both countries revealed that overall, Korea's level of competitiveness is gaining on that of Japan. However, the Japanese construction industry was still evaluated as maintaining higher competitiveness, due mainly to comprehensive planning for operation, well-established design documents, and effective total quality safety environment management, all of which are combined with institutional support and a cooperative attitude by labor. Adjustments should be made for advanced technologies considering the attributes of a typical Japanese construction prior to establishing and implementing application strategies according to the suggestion of experts. Based on the results of this study, a benchmarking of Japanese strength should be conducted, and this is eventually expected to contribute to establishing green construction, enhancing safety, improving culture, and reinforcing the capabilities of participants.