• Transactions of the Korean hydrogen and new energy society
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• v.34 no.4
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• pp.381-387
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• 2023

The risk assessment (safety assessment) must be performed to verify the risks during operation and installation of the hydrogen system and to ensure safe design and operation. Among them, hazard and operability study (HAZOP), a qualitative risk assessment, is most often used to discover risk factors and secure safety. However, in HAZOP performance, there is a difference in the level of evaluation results depending on the level and experience of the evaluator, and there is a high possibility that subjective results will be derived. This study aims to develop a risk factor library that can list and provide information on potential risk factors in order to solve these problems when performing HAZOP, reduce risk factors that are omitted or overlooked.

• Structural Engineering and Mechanics
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• v.81 no.2
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• pp.219-230
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• 2022

Due to the large number of railway bridges along China's high-speed railway (HSR) lines, which cover a wide area with many lines crossing the seismic zone, the possibility of a HSR train running over a bridge when an earthquake occurs is relatively high. Since the safety performance of the train will be threatened, it is necessary to study the safety of trains running over HSR bridges during earthquakes. However, ground motion (GM) is highly random and selecting the appropriate ground-motion intensity measures (IMs) for train running safety analysis is not trivial. To deal this problem, a model of a coupled train-bridge system under seismic excitation was established and 104 GM samples were selected to evaluate the correlation between 16 different IMs and train running safety over HSR bridges during earthquakes. The results show that spectral velocity (SvT₁) and displacement (SdT₁) at the fundamental period of the structure have good correlation with train running safety for medium-and long-period HSR bridges, and velocity spectrum intensity (VSI) and Housner intensity (HI) have good correlation for a wide range of structural periods. Overall, VSI and HI are the optimal IMs for safety analysis of trains running over HSR bridges during earthquakes. Finally, based on VSI and HI, the IM thresholds of an HSR bridge at different speed were analyzed.

• Safety and Health at Work
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• v.13 no.4
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• pp.379-386
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• 2022

Emergency medical services (EMS) personnel are at high risk for adverse mental health outcomes during disease outbreaks. To support the development of evidence-informed mitigation strategies, we conducted a scoping review to identify the extent of research pertaining to EMS personnel's mental health during disease outbreaks and summarized key factors associated with mental health outcomes. We systematically searched three databases for articles containing keywords within three concepts: EMS personnel, disease outbreaks, and mental health. We screened and retained original peer-reviewed articles that discussed, in English, EMS personnel's mental health during disease outbreaks. Where inferential statistics were reported, the associations between individual and work-related factors and mental health outcomes were synthesized. Twenty-five articles were eligible for data extraction. Our findings suggest that many of the contributing factors for adverse mental health outcomes are related to inadequacies in fulfilling EMS personnel's basic safety and informational needs. In preparation for future disease outbreaks, resources should be prioritized toward ensuring adequate provisions of personal protective equipment and infection prevention and control training. This scoping review serves as a launching pad for further research and intervention development.

• Research in Community and Public Health Nursing
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• v.21 no.2
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• pp.220-228
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• 2010

Purpose: The purpose of this research was to determine the effects of a safety management program on safety accident-related knowledge, attitude and behavior of elementary school students in Korea. Methods: This study adopted nonequivalent control group pretest-posttest design. The number of subjects was 34 in the experimental group and 31 in the control group. The safety management program was performed for approximately 50 minutes each session, once a week for 8 weeks. Data were collected from March 14th to June 23th, 2006, and analyzed by ${\chi}^2$ test and independent t-test with SPSS WIN 16.0. Results: There were statistically significant differences in safety-related knowledge (t=3.010, p=.006) and behavior (t=18.833, p=.001) between the experimental group and the control group. The score of attitude was different between the experimental group and the control group but the difference was not statistically significant. Conclusion: The safety management program used in this study was appropriate for elemental school students and affected safety-related knowledge and behavior of elementary school students. Therefore safety education should be provided systematically for elementary schools over the whole country.

• Safety and Health at Work
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• v.10 no.1
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• pp.54-60
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• 2019

Background: Increasing the establishment of integrated management systems (IMSs) is done with the purpose of leaving traditional management methods and replacing them with modern management methods. Thus, the present study sought to analyze the events and investigate the impact of IMS on health and safety performance indices in an Iranian combined cycle power plants. Methods: This case study was conducted in 2012 in all units of the Yazd Combined Cycle Power Plant on accident victims before and after the implementation of IMS. For data analysis and prediction of indices after the implementation of IMS, descriptive statistics and Kolmogorov-Smirnov test, Chi-square, linear regression, and Cubic tests were conducted using SPSS software. Results: The number of people employed in the power plant in an 8-year period (2004-2011) was 1,189, and 287 cases of work-related accidents were recorded. The highest accident frequency rate and accident severity rate were in 2004 (32.65) and 2008 (209), respectively. Safe T-score reached to below -3 during 2010-2011. In addition, given the regression results, the relation between all predictor variables with outcomes was significant (p < 0.05), except for the variable $X^1$ belonging to the accident severity rate index. Conclusion: The implementation of safety programs especially that of IMS and its annual audits has had a significant impact on reducing accident indices and improving safety within the study period. Accordingly, health and safety management systems are appropriate tools for reducing accident rate, and the use of regression models and accident indices is also a suitable way for monitoring safety performance.

• Human Ecology Research
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• v.59 no.1
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• pp.83-97
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• 2021

This study developed safety clothing that is essential for adolescent to protect their bodies from accidents, pursue activities and individuality. Therefore, the developed safety clothing was first based on international standards, while changing design to emphasize creativity, activity, and functionality. Two suits of boy's clothes and a girl's suit were developed as safety clothing for sportswear, along with two pairs of girl's clothes and a pair of boy's clothes for entertainment. It was confirmed that the difference in visibility was revealed by testing under different lighting conditions. Second, the survey on adolescents indicated no significant gender difference in sportswear. Round shirt+shorts for both boys and girls were the most preferred for ball game sportswear. However, there was a significant difference by gender in the design of safety clothing for entertainment. Male students preferred jump suit=cape+pants the most, and female students preferred jump suit>cape+pants in the order (p<0.05). In the safety clothes with the highest preference for entertainment, there was no gender difference. All students preferred the jump suit at the most. Checking at each school level, it was found that both middle and high school students preferred jump suit designs, and in safety clothing, middle school students preferred high-neck shirt blouse+tight skirt, and high school students preferred jump suits. Third, 35.5% responded that they would wear it more if current safety clothing is improved. This indicated the necessity of developing various safety clothing for adolescence.

• Journal of the Korean Society of Marine Environment & Safety
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• v.10 no.2 s.21
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• pp.23-27
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• 2004

The current paper is to review the need to considering cultural and educational aspects rather than technical approaches for the maritime safety. General and rather simple views on culture and education are provided as well as the state-of-the-art of the methodologies on ship safety assessment. Conclusions such as the national role and contributions to the international bodies and the third worlds are drawn in addition to the importance of cultural and educational factors to enhance the safety of ships.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.18 no.1
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• pp.41-48
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• 2008

On the basis of total page, the coverage rate of education of safety and health in textbooks of elementary school was approximately 10%. In middle school, the contents of safety education were addressed mainly in subject of chemistry below about 5% of coverage rate whereas the contents of health education appeared mainly in subject of athletics below about 15% of coverage rate. Similarly, the contents of safety education and health education in textbooks of high school were indicated mainly in the subjects of chemistry and athletics, showing below about 5% and 30% of coverage rate, respectively. In conclusion, the education level of safety and health in textbooks was generally lower compared to other contents. The coverage rate of safety education was relatively lower than health education, which implicates that extensive contents related to safety education are needed to be added to textbooks in order to establish preliminary attitude for preventing workplace accident.

• Child Health Nursing Research
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• v.12 no.2
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• pp.233-243
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• 2006

Purpose: This study was aimed to develop a WBI(Web Based Instruction) program on safety for 6th grades of elementary school students and to test the effects of it. Method: The web site is http://www.safeschool.co.kr. The effect of it was tested from Mar 24, to Apr 30, 2003. The subjects were 150 students. Data were analyzed with descriptive statistics, and $x^2$ test, t-test, and repeated measure ANOVA. Result: In the knowledge of the safety precaution, the preliminary test was mean 17.8, immediate post-test was mean 20.9 and 4 weeks post-test was mean 20.9, there were significant differences statistically among three points of time. In the attitude of the safety precaution, the preliminary test was mean 75.1, the immediate post-test was mean 80.8 and 4 weeks post-test was mean 80.4, which showed significant difference statistically among three points of time. For the motive of learning to the safety precaution, it was significantly higher statistically in the WBI. As a result, the WBI group had totally longer effects on knowledge, attitude and motivation of the safety accident prevention than the textbook-based instruction. Conclusion: WBI program be used in each class to provide more effective safety instruction.

• Food Science and Industry
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• v.51 no.1
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• pp.26-36
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• 2018

Terahertz (THz) represents the portion of the electromagnetic radiation between the microwave and the infrared region and is within the frequency range of 0.1-10 THz. The ability of THz waves to pass through a wide variety of packaging materials, combined with their ability to characterize the molecular structure of many substances makes it an attractive tool for the application of food quality and safety management. This review provides current information on application of THz spectroscopy/imaging technology for food quality and safety management. The THz spectroscopy/imaging technology has been shown to be useful for detecting foreign bodies, vitamin/moisture, pesticides, antibiotics, melamine etc. However, major barriers to the adoption of THz spectroscopy/imaging for food quality and safety management include THz signal loss in heterogeneous food matrices, high costs of sources and detectors, and absence of a library for the wide group of food compounds. Further research is needed to overcome these barriers.