• Title/Summary/Keyword: Range Management

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Impact Range Comparative Analysis of BLEVE by Gas Leakage According to LPG Main Components (LPG 주성분에 따른 누출 폭발 피해 영향범위 비교분석)

  • Soo-Hee Lim;Su-Yeon Son;Ha-Sung Kong
    • Journal of the Korea Safety Management & Science
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    • v.26 no.3
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    • pp.51-57
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    • 2024
  • The purpose of this study is to compare and analyze the impact range of explosion damage due to gas leaks at LPG filling stations, focusing on propane and butane, which are components of vehicle LPG. The scenarios were designed based on the explosion incident at an LPG filling station in Gangwon-do, where an actual gas leak accident occurred, resulting in Scenario I and Scenario II. The ALOHA program, developed by the U.S. National Oceanic and Atmospheric Administration (NOAA), was used as the tool to analyze the impact range of the explosion damage for both substances. The results of the study indicated that, under identical conditions, propane had a wider impact range of damage than butane. This is presumed to be due to the greater explosion energy of propane, attributable to its physicochemical properties. Therefore, when preparing for LPG leak accidents, measures for propane need to be prioritized. As safety measures for propane, two suggestions were made to minimize human casualties. First, from a preventive perspective, it is suggested to educate workers about propane. Second, from the perspective of response measures and damage minimization, it is suggested to thoroughly prepare emergency evacuation and rescue plans, evacuation routes, designated shelters, and emergency response teams. This study compares and analyzes the impact range of radiative heat damage based on LPG components. However, hazardous accidents are critically influenced by the type of leaking substance, the form of the leak, and meteorological factors affecting the diffusion pattern of the substance. Therefore, for future research, it is proposed to model various leakage scenarios for the same substance to conduct a comprehensive risk assessment.

A Study on the Development of Quality Management System Model and its Application in the Public Service Sector (시스템적인 접근에 의한 품질경영모형수립과 공공부문의 적용에 관한 연구)

  • 강병서;김계수
    • Journal of Korean Society for Quality Management
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    • v.27 no.3
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    • pp.17-39
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    • 1999
  • A strategic model on quality management system was developed and applied for the public service sector. The public service sector includes a wide range of organizations such as local authorities responsible for education, social services and housing, government departments, military forces, and public enterprises like post office and Korean Railroad. Quality management requires strategic integration of management system for achieving customer satisfaction. Questionnaire was developed, and data was collected and analyzed for this study. Conclusively, leadership and organization culture are the important drivers among the quality management activities. Human resource development and process management are significantly related to employee satisfaction, which also significantly influences on customer satisfaction in the public sector.

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A Study on the Management Information System for Supporting the Supervision of Construction Workplace (건설감리실무 지원을 위한 정보관리시스템 구축에 관한연구)

  • Noh, Dae-Won;Jeong, Byong-Hoon
    • Journal of the Korea Institute of Building Construction
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    • v.3 no.2
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    • pp.85-93
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    • 2003
  • The purpose of this study was to construct the management information system for supporting the supervision of construction workplace. For the purpose, firstly, this study surveyed the present states and the problems of construction workplace in Korea. And then, defined the range and the process of the supervision of construction workplace, and examined the information standards of construction and the CALS standards for supporting. As a result, this study proposed the first stage of management information system, which consists of several basic functions, such as, document management, system management and partially, duality management and construction information management.

INTEGRATED PERFORMANCE MANAGEMENT FOR WHOLE PHASES OF URBAN RENEWAL MEGAPROJECTS

  • Heedae Park;Kang-Wook Lee;Seung Heon Han
    • International conference on construction engineering and project management
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    • 2009.05a
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    • pp.1463-1467
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    • 2009
  • Construction projects are vulnerable to diverse internal and external factors, requiring systematic and consistent performance management along the entire life cycle of a project. In particular, urban renewal projects have a range of performance measures, including policy reconciliation and permits, project development, project financing, design, construction, and occupancy and maintenance. This requires a program-level megaproject approach, which integrates each stage of a project as well as variety of stakeholders' interests in pursuing a project from different perspectives. However, previous research on performance management has focused especially on the limited scopes of factors, including cost, quality, and schedule at the project level or on financial factors at the firm level. Given the lack of current approaches, this study suggests an integrated and systematic performance management scheme to control urban renewal megaprojects at the broadened perspectives of the program level. To this end, this study adopts the balanced scorecard approach and elicits key performance indices associated with various project configurations. Finally, an algorithm is presented for quantitatively assessing the level of performances along whole life cycle of urban renewal megaprojects.

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Study on the Result Changes with the Size of the Variance in Taguchi Method and Factor Experimental (다구찌 기법과 요인실험의 실험 데이터의 산포 크기에 따라 결과 변화 고찰)

  • Ree, Sangbok
    • Journal of Korean Society for Quality Management
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    • v.41 no.1
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    • pp.119-134
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    • 2013
  • Purpose: The purpose of this paper is to show whether the results are changed with respect to the variance of the data, by analysis of data obtained from the Taguchi experimental techniques and general experiment. Because which cannot be prove by mathematical Formula, through experimental examples will show. Methods: Taguchi experiments were carried out with paper Helicopter experiment. Experimental Data are obtained by special designed Drop Test Equipment. While Experimental value arbitrarily changed, we looked at how Significant control Factor of Taguchi Methods and Factor experiments are changed. This process cannot be expressed as a Mathematical formula, but showed as a numerical example. Results: Saw significant changes in the factors when data is outside a certain range of the experimental data. By Test of Equivalence Variance, Experiment data is verified reliability. To find the Control Factor, Taguchi Method is better than the general experiment. Conclusion: We know that a Significant Factor is changed with the range of Variance of Experiment Data. The value of this paper is verified change process with Numerical Data obtained Experiment.

소출력 무선설비 관리제도 개선 방향

  • 여경진;윤세정;염호선;류충상
    • The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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    • v.12 no.4
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    • pp.13-23
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    • 2001
  • Recently, the demands on the short range radio device has been highly increasing, with the advantage of its mobility and improvement of its reliability which has been ensured by development of digital communication techniques. This study suggests the direction for the improvement of the national regulations in the technical, administrative and regulatory aspects, discussing the present situation of the regulations. While suggesting to launch the study on spectrum source and RE environments, we expect that several proposals in this paper will give a satisfaction on the development of strategy for spectrum management, development of radio technology and booming the short range radio communication.

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An Empirical Study on the Safety Education and Safety Accident Status in Child-Care Facilities and Homeroom Teacher's Recognition about the Safety Education Range and Methods (보육시설 안전교육.안전사고 실태와 담임교사들의 안전교육 범위와 방법 인식에 대한 실증적 연구)

  • Kim, In-Jung
    • Journal of the Korea Safety Management & Science
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    • v.14 no.4
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    • pp.125-136
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    • 2012
  • In most child-care facilities, homeroom teachers take the responsibilities for safety education, which has been conducted in class hours on a regular basis. It was found that most homeroom teachers are lacking in teacher training opportunities, and the younger they are, the less training experience they get. Teachers with fewer teaching careers had a greater interest in safety education and training courses. In addition, homeroom teachers have been utilizing monthly toddler magazines as a method to acquire knowledges for safety education and prevention of safety accidents. The safety accidents which have most frequently occurred in care-care facilities turned out to be stumble and tear, and infants aged 3 years or younger were found to be easily exposed to the safety accidents mainly due to the frolic between peers during the free-choice activity time. The homeroom teachers recognized only traffic safety education among the range of safety training courses, which varied depending on teaching career such as traffic safety education and indoor/outdoor safety environment training, etc. In addition, it turned out that the safety training methods were limited to the utilization of discussion techniques, role-playing, description and demonstration.

The Selter Selection Plan due to Formaldehyde Leakage (산화프로필렌의 누출영향평가에 따른 안전거리 산정)

  • Seongju Oh;Sanghun Han;Hasung Kong
    • Journal of the Korea Safety Management & Science
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    • v.26 no.2
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    • pp.11-22
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    • 2024
  • This study aims to present safety distances by the damage impact assessment of the leakage of propylene oxide. As a result of the experiment, the pressure 1psi range was 52m to 169m, the radiant heat 18kW/m2 range was 63m to 163m, the AEGL-2 range was analyzed as 224m to 414m, and the fire ball diameter was analyzed to be 45m to 121m. Additionally, the extent of damages was proportional to the amount of propylene oxide stored or handled. The safe distance for a 10% lethality due to overpressure and radiant heat was calculated to be 134m, and the safe distance for a 0% lethality was 169m. Toxicity was measured at 134m with a lethality 0%. Therefore, the safety distance due to leakage of propylene oxide is calculated to be between 134m and 169m.

A Study on the Curriculum of Emergency Medical Technology in Korea (한국의 응급구조와 교과과정)

  • Kim, Sun-Sim
    • The Korean Journal of Emergency Medical Services
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    • v.13 no.2
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    • pp.17-59
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    • 2009
  • Purpose : This study is to provide the basic data for developing the curriculum standardization of emergency medical technology by analyzing the three-year and four-year period curriculum and high-advanced major course to bring up highly qualified paramedics. Method : This study was analyzed, divided in 3 sections, majors, teaching profession subjects and liberal arts of 18 three-year curriculum universities and 7 four-year curriculum universities. Majors were analyzed, departmentalized in the national examination for license, the clinical and on-the-job training(OJT) and other major-related subjects. It is descriptive study, analyzed by dividing high-advanced major course into majors and liberal arts. Result : 1) The average number of subjects established in three-year-course college were 58.1. The completion credit was 130.1 in average. Also, the average number of established subjects at four-year-course were 61.1. The average completion credit was 141. 2) Three-year-course college professors give lecture in theory for 95.4 hours on average, which account for 59.9% of overall lecture, and 63.8 hours for practical training that takes 40.1% of the hours lectures are given. Meanwhile, four-year-course give lecture in theory for 111 hours on average, taking a part of 59.5%, and 76.5 hours for practical training, 40.5%. 3) In regard to liberal arts, at three-year-course college, the average credit was 16 but the proportion that liberal arts charge among the completion credit was 11.6. Meanwhile, at four-year-course universities, the average credit was 28.4 and the percentage that the liberal arts took part in the completion credit was 20.1. 4) Looking over national examination subjects among majors at three-year-course college, basic medicine's average credit was 17.2, introduction to advanced emergency care's average credit was 15.5, Special advanced emergency care's average credit was 28, emergency patient management's average credit was 9.2 and emergency medicine statute's average credit was 3.6. Meanwhile, in case of four-year-course universities, basic medicine's average credit was 14.3, introduction to advanced emergency care's average credit was 12.7, special advanced emergency care's average credit was 31, emergency patient management's average credit was 8.3 and emergency medicine statute's average credit was 2.9. 5) Among national examination subjects, in case of three-year-course, the range of basic medicine credits was 6 to 23, the average credit showed 17.2. The range of introduction to advanced emergency care credits was 9 to 21, the average credit showed 15.5. The range of special advanced emergency care credits was 19 to 36, the average credit showed 28. The range of emergency patient management credits was 5 to 12, the average credit was 9.2. The range of legal medicine credits was 3 to 6, the average was 3.6 credit. In case of four-year-course the range of basic medicine was 12 to 17, the average of the credit was 14.3. The range of introduction to advanced emergency care was 9 to 19, and the average of the credit was 12.7. The range of special advanced emergency care was 18 to 41, and the average of the credit was 31. The range of emergency patient management was 7 to 12, and the average of the credit was 8.3. The range of legal medicine was 3 to 4, and the average of the credit was 2.9. So except special advanced emergency care, all the other subjects had higher score in three-year-course than four-year-course. 6) About the other major-related subjects, the completion credit was 23 on average at three-year-course and 13.5 at four-year-course. 7) The clinical and on-the-job training(OJT), In the case of three-year-course, the average completion credit was 13.5 and 13.5 at four-year-course. 8) The teaching profession subject, In the case of three-year-course, the average credit was 3 and the percentage that the teaching profession subject took part in the completion credit was 2.3% on average. Four-year-course established the subject only at one university. 9) In high-advanced major process, the entire established subjects on average were 12.8 and the average completion credit was 36.3. In liberal arts, the average established subjects were 6.5 and the completion credit was 19.5. The number of majors were 9.5 on average and the credit was 26.5 Conclusion : According to the aforemention results, the curriculum for emergency medical technology needs to be developed and standardized.

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An Empirical Validation Study for Calibration Verification in TDM Test (검량보정 검증의 실험적 적합성에 대한 연구 -치료적 약물검사를 중심으로-)

  • Chang, Sang-Wu;Kim, Nam-Yong;Choi, Ho-Sung;Park, Yong-Won;Chu, Gyung-Bok;Yun, Keun-Young;Park, Byung-Ok
    • Korean Journal of Clinical Laboratory Science
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    • v.37 no.1
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    • pp.1-7
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    • 2005
  • The purpose of this study was to verify (i) a consistent calibration verification for the assessment of method linearity and (ii) calibration agreement with calibration settings. We validated calibration verification through method linearity with different lot number of individual calibrators that span the working range for 9 tests except salicylate with control sample in test. We evaluated that it covered broad analyte range to assay from near zero to the top of the measuring range with 5 or 6 points every three times for 10 analytes in TDM test. Target values were plotted on X-axis with assigned or observed values on the Y-axis. Working range were as follows. Calibration verification of the measuring range (maximum to minimum values) has been validated asetaminophen 0.1 to $304.6_{\mu}g/mL$, salicylate 0 to $1005_{\mu}g/mL$, valproic acid 3.2 to $154.19_{\mu}g/mL$, digoxin 0.17 to 5.65 ng/mL, vancomycine 1.3 to $80.51_{\mu}g/mL$, carbarmazepine 0.1 to $22.3_{\mu}g/mL$, phenytonin 0.6 to $40.21_{\mu}g/mL$, theophyline 0.2 to $40.21_{\mu}g/mL$, primidone 0 to $24.07_{\mu}g/mL$, phenobarbital 0.6 to $60.0_{\mu}g/mL$. Drawing a straight line through five or six points of these data showed good linearity. We are sure that it is important to assess the calibration verification of a test method to ascertain the lowest and highest test results that are reliable.

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