• Title, Summary, Keyword: Safety control

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Effects of Damping and Elastic Nature on the Control Performance of a Safety Budget-Industrial Accidents Model (산재예방예산-산재율 모델의 감쇠 및 탄성 특성이 제어성능에 미치는 영향)

  • Choi, Gi Heung
    • Journal of the Korean Society of Safety
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    • v.28 no.1
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    • pp.6-11
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    • 2013
  • In this study, the effect of damping and elastic nature on the control performance of a safety budget-industrial accident rate model in Korea is examined first. The effectiveness of such dynamic model in establishing safety policies is shown with a simple proportional-integral(PI) feedback control mechanism. Control performance of the safety system model is explained in view of maximizing the effect of IAPF and minimizing the absolute amount of IAFP. Control performance is then evaluated and proved to be effective to prevent and reduce the industrial accidents. Implications in feedback control of a safety system model suggested to optimization of safety policies are also explored. Without proper restructuring of the safety system, it would not be possible to hit the target industrial accident rate. Even if the control objective is met, the amount of industrial accident prevention fund required to reduce the industrial accident rate from the current level to the target level would be far beyond the social consensus.

Nurses' Safety Control according to Patient Safety Culture and Perceived Teamwork (간호사가 인식하는 환자안전문화와 팀워크에 따른 간호사의 안전통제감)

  • Kim, Kyoung Ja
    • Journal of Korean Academy of Nursing Administration
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    • v.22 no.2
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    • pp.199-208
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    • 2016
  • Purpose: The purpose of this study was to investigate the influence of patient safety culture and perceived teamwork on the safety control of nurses. Methods: This study was conducted as a descriptive cross-sectional survey with 141 nurses who worked in a tertiary hospital with over 1,000 beds in S city, Gyeonggi province. Data were collected using structured questionnaires from July 20, to July, 31, 2015. Results: The average work period for nurses participating in the research was 8.84 years. The perceived teamwork and patient safety culture were positively correlated with safety control. The regression model with patient safety culture, perceived teamwork and clinical career against safety control was statistically significant (F=10.16, p<.001). This model also explained 37.1% of safety control (Adj. $R^2=.37$). Especially, communication (${\beta}=.27$, p=.023) of patient safety culture, clinical career (${\beta}=.26$, p<.001), mutual support (${\beta}=.24$, p=.042), and team leadership (${\beta}=.24$, p=.018) in perceived teamwork were identified as factors influencing safety control. Conclusion: The findings of this study imply that a broad approach including teamwork and patient safety culture should be considered to improve the safety control for nurses.

- A Study on Control Charts for Safety and Environmental Performance Evaluation - (안전 및 환경성능평가를 위한 관리도에 관한 연구)

  • Choi Sung Woon
    • Journal of the Korea Safety Management and Science
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    • v.6 no.4
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    • pp.195-213
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    • 2004
  • This paper deals with an efficient and effective method on measuring, monitoring and evaluating safety and environmental performances of a process using SPC control charts. We propose 7 safety control charts as a tool to monitor hazard dendritics, and we propose 15 environment control charts to monitor pollution emissions. We also propose useful guidelines that SPC(Statistical Process Control) control charts can be used for safely and environmental monitoring.

A Study on Enforcement Effects of Radiation Safety Control Regulations for Diagnostic X-ray Equipments (진단용 방사선안전관리 현황에 관한 연구)

  • Sung, Mo-Il;Park, Myeong-Hwan;Kwon, Duk-Moon;Lee, Joon-Il
    • Journal of radiological science and technology
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    • v.22 no.1
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    • pp.73-78
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    • 1999
  • The purposes of this study are to analyze the realities after enforcements of safety control regulations for diagnostic X-ray equipments and to suggest means for an improvement of low radiation safety control. A questionnaire survey for medical radiologic technologists was carried out to determine enforcement effects of the safety control regulations. The results of analysis from the survey are as follows. That is, most of the respondents realized the importance of the radiation safety control system, but about a half of them revealed that the regulations were not well observed in accordance with their purposes. Only 43.9% of the respondents took an active part in quality control and safety control of radiation. And respondents responsibility, sex, age, and knowledge for safety control were important indicators for observations of the regulations. Trainings for the safety control regulations are needed to ensure safety control and proper usage of diagnostic X-ray equipments. And management of organizations using diagnostic X-ray equipments have to understand and stress the importance of radiation safety control system.

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Safety analysis to derive safety requirement in the railway system

  • Joung, Eui-Jin;Shin, Kyung-Ho;Kim, Yong-Gyu
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • v.1
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    • pp.383-386
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    • 2006
  • The safety of the railway system is important because the system is a mass transit system and the results of the accident are inconceivable. The railway system is operated by train operation system such as train control system. So the train control system requires safety critical characteristics. In the European railway, ETCS (European Train Control System) project has been finished to accomplish the interoperability of each national railway signaling system. According to the interoperability degree, ETCS levels are suggested. As the highest level, ETCS level 3 suggests a radio communication. Also recently urban railway system is operated by driverless and automatic train control system. In this circumstance, more safety is required than before in the railway system. In order to accomplish the safety of a system, the requirements considering safety have to be suggested. The requirement is a set of several functions such as general function, environment, safety etc. For the safety critical system, safety function is more important than any other functions. The safety functions are deduced by safety analysis. In order to perform the safety analysis, the system hazards have to be identified and then risk analysis for each hazard should be performed. The risk is related to the frequency and the severity of each hazard. And then countermeasures for each risk have to be prepared. The summary of the countermeasures is about a kind of safety functions in a system. In this paper, the safety functions for a train control system are presented according to the above procedure.

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A Study on the Safety Control System of Child Care Systems Using Interior Lighting and Entry Systems

  • Joo, Dae-Chul;Kwon, Mee-Rhan;Shin, Seung-Jung
    • International Journal of Internet, Broadcasting and Communication
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    • v.9 no.1
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    • pp.42-49
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    • 2017
  • Despite the government's various safety measures, the number of safety accidents continues to rise and the interior is more likely to occur indoors than outdoors. Safety accidents involving young children account for more than 70 % of the safety accidents in the safety accidents, and the ratio of safety accidents in the classroom or classroom is more than 50 %. In this thesis the author proposes the system managing the accidents notification service using LED lighting and access entry control. Utilizing IoT technology, remote control or access can be controlled remotely by controlling multiple lights and entrances from each room and by means of a number of lighting and entrances. By monitoring and analyzing real-time status via server PC and mobile interface, it can control the maximum control and incident prevention, automatic control, and automatic control.

The Effects of Situation-oriented Safety Education Program on Children's Safety Knowledge and Safety Problem-Solving Skill (상황중심 안전교육 프로그램이 유아의 안전지식 및 안전문제해결사고에 미치는 효과)

  • Yang, Jin-Hee
    • Korean Journal of Child Studies
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    • v.26 no.6
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    • pp.367-383
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    • 2005
  • This study investigated the effect of situation-oriented safety education program on children's safety knowledge and safety problem-solving skill. Subjects were 51 five-year-olds(25 in the experimental group and 26 in the control group) who were enrolled in public kindergarten located in Jeon-Buk. Results were that : First, there were significant differences in the children's safety knowledge between the experimental and the control group. Children's safety knowledge in the experimental group were improved in comparison with those of the control group. Second, there were significant differences in the children's safety problem-solving skill between the experimental and the control group. Children's safety problem-solving skill in the experimental group were improved in comparison with those of the control group.

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Safety Knowledge, Safety Control and Safety Performance in Early Childhood Teachers (유아교사의 안전지식, 안전통제가 안전수행에 미치는 영향)

  • Kim, Soo Hyang;An, Aun Hei
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.1
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    • pp.246-254
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    • 2015
  • This study was conducted as a descriptive study with the aim of identifying the effects of safety knowledge and safety control on early childhood teachers' safety performance. Data collection for the study was carried out between October $10^{th}$ and $30^{th}$, 2014 by surveying 187 early childhood teachers working in child day care center and kindergarten located in P, K, & Y city. Measures were subjects' safety knowledge, safety control, and safety performance. For the analysis of the data, the statistical methods of frequency, mean and standard deviation, t-test, ANOVA, Pearson's correlation coefficients, and multiple regression analysis were employed. When the category of safety performance was analyzed by general features, marital status, educational career, and degree of assistance of safety education, there were significant differences. Safety performance correlated positively with safety knowledge and safety control. Factors affecting early childhood teachers' safety performance were identified in the order of safety knowledge and safety control and the explanatory power was 60.0%. The findings of the study indicate that in order to increase early childhood teachers' safety performance, their safety knowledge and safety control have to be enhanced.