• Title/Summary/Keyword: Accident Occurrence

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A Comparison Study on Severe Accident Risks Between PWR and PHWR Plants (가압 경수로 및 가압중수로형 원자력 발전소의 중대사고 리스크 비교 평가)

  • Jeong, Jong-Tae;Kim, Tae-Woon;Ha, Jae-Joo
    • Journal of Radiation Protection and Research
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    • v.29 no.3
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    • pp.187-196
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    • 2004
  • The health effects resulting from severe accidents of typical 1,000MWe KSNP(Korea Standard Nuclear Plant) PWR and typical 600MWe CANDU(CANada Deuterium Uranium) plants were estimated and compared. The population distribution of the site extending to 80km for both site were considered. The releaese fraction for various source term categories(STC) and core inventories were used in the estimation of the health effects risks by using the MACCS2(MELCOR Accident Consequence Code System2) code. Individuals are assumed to evacuate beyond 16km from the site. The health effects considered in this comparative study are early and cancer fatality risk, and the results are presented as CCDF(Complementary Cumulative Distribution Function) curves considering the occurrence probability of each STC's. According to the results, the early and cancer fatality risks of PHWR plants we lower than those of PWR plants. This is attributed the fact that the amount of radioactive mateials that released to the atmosphere resulting from the postulated severe accidents of PHWR plants are smaller than that of PWR plants. And, the dominating initiating event of STC that shows maximum early and cancer fatality risk is SGTR(Steam Generator Tube Rupture) for both plants. Therefore, the appropriated actions must be taken to reduce the occurrence probability and the amounts of radioactive materials released to the environment in order to protect the public for both PWR and PHWR plants.

Study on Displacement Behavior of Abandoned Mine Goaf Cave According to Filling Factor (충전율에 따른 폐광산 채굴적 공동의 변위거동에 관한 연구)

  • Kim, Dong-Rak;Seo, In-Shik
    • Journal of the Korean Society of Industry Convergence
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    • v.14 no.4
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    • pp.151-156
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    • 2011
  • The domestic mine development community the countermeasure establishment is insufficient about ground sinkage, not only the mine which is a in line is partial from the mine of the most which has become the rest mine and abandoned mine or the index sinkage occurs. The ground sinkage which occurs from the abandoned mine area most after operation is stopped, a long time passes and accurately predicts an occurrence location and a time with the residual sinkage which occurs, is difficult. Underground goaf of the abandoned mine and the closed shaft When considering the potentiality which causes the instability of ground, is a possibility of reaching a damage in the ground infrastructure or life. The underground shaft which is formed specially with mine development and goaf operates with the obstacle factor in the development project of the mine area, the ground sinkage which is caused by with sinkage, operates with the large safety accident occurrence factor where the important infrastructure of the railroad, road, residential area etc. is damaged. Therefore, In this paper, the goaf cave of the abandoned mine area, for the displacement behavior according to the filling factor of the material is to analyze the numerical analysis.

The Study on the Complex Causation of Loss in Marine Insurance (해상보험(海上保險)에서의 복합인과관계(複合因果關係)에 관한 연구(硏究))

  • Park, Sung-Cheul
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.15
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    • pp.119-136
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    • 2001
  • The purpose of this paper is to consider how to decide the cause of loss or damage to the transport goods when maritime accident occurs. In marine insurance, the underwriter is liable for any loss or damage proximately caused by a risk insured(MIA Art.55). So it is very important to determine the proximate cause of loss or damage to ascertain whether it is to be recoverable under the policy. But there is no definite conception or rule what is the proximate cause. It was left to the tribunal as a question of fact. In this paper, I will suggest the general rules to determine the proximate cause of loss or damage of the transport goods in marine insurance. First, in MIA 1906, there is the rule of proximate causation and it has been established the effective causation by cases since 1918. Second, in Institute Cargo Clauses(B) & (C), there are rules of considerably relaxed standards to determine the causation of loss of or damage using the "attributable to" and "caused by" basis. Third, it is noted, under the complex causation situation, there are difference basises to decide the liability of underwriters between the case of successive occurrence of single risk and the case of concurrent occurrence of several risks. Forth, in practice, it couldn't be ascertained the underwrier's liability by a definite rule and it should be fully considered the circumstances and conditions of the loss.

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The Study Fire Mechanism and Real Fire Correlation of Power Condenser (전력용 콘덴서의 화재메커니즘과 실제 화재상관관계 연구)

  • Baek, Donghyun
    • Fire Science and Engineering
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    • v.31 no.6
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    • pp.112-117
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    • 2017
  • This research discusses the correlation about fire mechanism based on real fire cases. Electric power condenser failure mechanism is classified into 7 steps and fire mechanism is classified into 12 steps. In the 5th step, the procedure of operating a protection channel of a protection relay was identical in the case of the failure and fire. As the fire occurrence mechanism was applied from the 6th step, internal pressure was increased because of gas generation produced by internal combustion phenomenon and arc. This caused explosion in 10st step of fire occurrence mechanism. In 11th step, the flame such as arc gushed out with insulating oil which caused fire and leaded to second accident. This kind of step correlation could play an important part to examine fire.

Possibility of Risk Accidents and Response Strategies for Participants in Agencies in Charge of Employment for the Elderly: Focusing on occupational risk accidents and COVID-19 risk accidents (노인일자리 전담기관 참여자의 위험사고 발생가능성과 대응 전략: 업무상 위험사고와 코로나-19 위험사고를 중심으로)

  • Park, Jae-Young;Youn, Ki-Hyok;Lee, Jin-Yeol
    • Journal of Internet of Things and Convergence
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    • v.8 no.6
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    • pp.65-73
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    • 2022
  • This study identified the level of awareness of dangerous accidents by empirically analyzing the possibility of hazardous accidents at work and the possibility of dangerous accidents due to COVID-19 targeting the participating seniors who are active in the Senior Club, an organization dedicated to job placement for the elderly. The purpose of this study is to provide basic data for preparing measures to improve risk accidents that may occur in organizations in charge of job placement for the elderly and to suggest countermeasures to prevent dangerous accidents. For this purpose, data were collected from the elderly participating in 16 senior clubs in Busan, and 425 of the collected 430 were ultimately used. As a result of this study, first, it was found that the elderly who participated in a job-dedicated institution for the elderly generally perceived the possibility of occupational risk accidents and risk factors due to COVID-19 to be low. Second, it was found that there was a statistically significant difference in the probability of occurrence of hazardous accidents at work according to demographic characteristics during the participation period, and the probability of occurrence of dangerous accidents with COVID-19 was found to have statistically significant differences in the classification and age of the participating elderly. Based on the results of this study, the project manager suggested creating a safety accident management record sheet, preparing a risk management manual, and establishing a risk management system reflecting the individual characteristics of the participants.

Research about Similarities in Interior Space of Rem Koolhaas and Painting Theory of Gilles Deleuze (렘 콜하스의 실내공간과 질 들뢰즈 회화론의 유사점 연구)

  • Kim, Suk-Young
    • The Journal of the Korea Contents Association
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    • v.12 no.10
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    • pp.138-147
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    • 2012
  • Recently, significant tries appeared in the spatial design field were appreciated as tries to find crossing between space formation and discourse. This study is to find spatial clues from Gilles Deleuze, the modern philosopher's literature where he developed his discourse analyzing paintings of Francis Bacon, and reveal common characteristics with the contemporary spatial design. According to the analysis of Deleuze, Bacon's paintings are separated into frame-aplat, shape-figure, and contour-track. From these three elements, I extracted spatially analyzing languages of 'occurrence of shape-accident', 'space of track-sense', and 'interaction of aplat-background.' Then with these analyzing languages, I analyzed latest works of Rem Koolhaas. Deleuze Space Theory confirmed in works of Rem Koolhaas is the application of accident-focused occurred between the user and space, the space that induces accident, and differentiation between the user and space or space and site. As a result, I could confirm the common characteristic that both modern discourse and spatial design are understood as 'difference' from life and movement.

Domestic and Foreign literature review of Dental Accidents and Malpractice claims (치과의료사고 및 분쟁에 대한 국내·외 문헌고찰)

  • Kim, Myeng Ki;Cho, Han A;Lee, Jin-han
    • The Journal of the Korean dental association
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    • v.53 no.2
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    • pp.82-95
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    • 2015
  • Background: Interest in medical malpractice claims and accidents is a day-to-day social issue to general public as well as medical personnel. Related laws and regulations already have been established, and institutions based on the laws and regulations also have been founded. However, in our dental community, interest and response to the issue seem insufficient. Methods: We searched four medical literature databases that are mainly cited in the medical community. Keywords including 'dental malpractice claims', 'patient safety' and 'medical accident' were used for the search. Among the selected literatures, we chose specific ones separately whose content is authentic and easily approachable. Results: Medical malpractice claims and accidents tend to increase around the world. As the cost or the difficulty level of surgery increases, the dispute rate also increases, which appears even more apparent in developed countries. Preventive measures to prevent the disputes and accidents are not significantly different. Three critical of them include relationship of doctor with patient, the informed consent and medical record. Conclusion: Tools for accident occurrence or communication improvement have been introduced. All of those cost time and money. However, education or professional request of liability insurance companies, self-education and provision of guidelines can be immediately implemented. To implement those, dentists' promotion at the regional or national level is imperative. rhBMP-2 is widely used at sinus augmentation, alveolar bone defect, and socket preservation.

Influences of Safety-Practice and Cognitive Failure on Safety Accident among Middle Students (중학생의 안전실천과 인지실패가 안전사고에 미치는 영향)

  • Jung, Do-Young;Lee, Seung-Ho
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.8
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    • pp.3665-3671
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    • 2013
  • This study was investigate to impact on safety accidents occurrence for the safety practices of middle school students learn the extent of the failure. A total of 292 patients and it survey data were collected from 5 November 2012 to 11 May 25 of research subjects. Research tools were used SPSS win17.0, the mean and standard deviation, Paired t-test, Pearson's correlation coefficient was used. Safey practice and cognitive failure of subjects was related to negative correlation and according as safety practices was higher, cognitive failure was low. According as safety practices and cognitive failure was low, Safety incidents experienced was high. Therefore, by applying safety practices and cognitive failure degree, it need to for research to come up with ways for the prevention of safety accidents. Besides, A variety of safety and accident prevention training programs by expanding the scope of the study in school, it should be done generalization of safety awareness, cultivate and Safety practice.

A Study on the Actual Status of Accident and Measure of Water Safety (수상 안전사고 실태와 안전대책에 관한 조사 연구 - 1998년~2000년 전국 익수 사고자를 중심으로 -)

  • Kim, Kab-Sun;Lee, Young-Hyun
    • The Korean Journal of Emergency Medical Services
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    • v.5 no.1
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    • pp.165-175
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    • 2001
  • The purpose of this study is to investigate the actual status of occurrence of near-drowning accident by regions, sex, causes, places, months and days through Bureau of Statistics for 3 years from 1998 to 2000. 1. As the results of the drowned persons for 3 years from 1998 to 2000, the total number of them were 5,058 persons and 1,686 persons the yearly mean experienced near-drowning accidents. In the actual status of drowned persons by regions, 255 persons(15.1%) of Kyung-Ki regions are highest, 27 persons(1.62%) of Che-Ju regions are lowest. 2. In the actual status of drowned persons by sex, the yearly mean 1324 male persons(78.58%) and 362 female persons(21.42%) of 1,686 persons the yearly mean are drowned and the number of male drowned persons is 3.7 times higher than that of female. 3. In the actual status of drowned persons by age, among 1,686 drowned persons the yearly mean, 467 persons between fifteen and nineteen are drowned(9.23%). 4. In the actual status of drowned persons by causes, the major causes due to the poor swimming skills are 43.4%. 5. In the actual status of drowned persons by places, the major places are rivers and riversides(50.0%). 6. In the actual status of drowned persons by months, among 1,686 drowned persons the yearly mean, 319.33 persons(18.94%) on the July and 403.66 persons(23.94%) on the August had the highest the drowning accident. It is one of major cause of seasonal accidental death especially in summer. 7. In the actual status of drowned persons by day of the week, among 1,686 drowned persons the yearly mean, most of near-drowning accidents are happened on weekend(56.62%).

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The Statistical Study of 84 Traffic Accident Patients hospitalized in Oriental Medical Hospital (한방병원에 입원한 교통사고 환자 84례에 대한 통계적 고찰)

  • Park, Tae-Yong;Lee, Jeong-Han;Ko, Youn-Seok;Woo, Young-Min;Song, Yong-Sun;Shin, Byung-Cheul
    • The Journal of Korea CHUNA Manual Medicine
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    • v.6 no.1
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    • pp.31-40
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    • 2005
  • Objectives : The purpose of the study was to find out the characteristic of patients admitted in Oriental Medical Hospital We to traffic accident and to promote the superiority of oriental medical treatment on the sequelae. Methods : 84 inpatients were analyzed statistically according to medical charts, hospitalized from January 1, 2003 to December 31, 2004. Results and Conclusions : By gender, males accounted for 38.1%, while females 61.9%. By age, most incidences occurred in the forties (25%), thirties (22.6%) and twenties (16.6%) in order. With regard to the interval from occurrence of accidents to hospitalization, 26 cases (31%) were found to be hospitalized 41 days after the accidents, followed by 21 cases (25%) in $11{\sim}20$ days and 17 cases (202%) in $1{\sim}2$ days. Most cases tumed out to be minor injuries with 40 patients from cervical sprain (47.6%) and lumbar sprain (37%). The mean duration of hospitalization was $36.58{\pm}48.30$ days Inpatients of paralysis of extremities (sequelae of ICH) numbered the longest stay $(121.00{\pm}75.57\;days)$, cervical sprain that recorded $11.28{\pm}6.52$ days hospitalized. Most of inpatients were treated with acupuncture(100%), moxibustion, cupping therapy (97.6%) and herbal medication(96.4%), chuna Manipulation therapy was chosen selectively with sprain, HIVD.

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