• Safety and Health at Work
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• 제8권3호
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• pp.322-326
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• 2017

In 1992, the quality control program was introduced in Republic of Korea to improve the reliability of the work environment monitoring, which was introduced in the 1980s. The commission entrusted by the Ministry of Employment and Labor, the Occupational Safety and Health Research Institute has conducted the program for industrial hygiene laboratories including designated monitoring institutions and spontaneously participating agencies. The number of institutions that participated in the program has increased from 30 to 161. The initial conformance ratio in the participants was 43% (organic solvents) and 52% (metals). Thereafter, the conformance ratio increased rapidly and it has remained in a stable state at more than 89% since 1996. As subject materials, 13 kinds of organic solvents and 7 kinds of metals were used. To improve the capability of measurement and analysis of private institutions, educational courses were conducted annually. An assessment at the actual sites of participants was additionally introduced into the program in 2013. Thus, the program turned into a system that administrates the overall process of participants. For the future, the scope of target materials will be extended through additional items. Thus, the reliability of the results of the work environment monitoring is expected to increase accordingly.

• 한국항공운항학회지
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• 제30권4호
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• pp.145-158
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• 2022

To manage State Safety Program (SSP) in a more integrative and proactive manner, an aviation safety authority of the state shall detect and assess the risk of emerging or hidden safety hazards before they provoke accidents or incidents(ICAO, 2018). In case of South Korea, safety risk assessment is conducted by calculating the likelihood and severity of the hazard following ICAO's safety management manual. It is reasonable to extract the safety risk likelihood by calculating the number of occurrence caused by the hazard. However, it is ambiguous to assess the safety risk severity defined as the extent of harm that might be expected to occur as a consequence of the identified hazard. In this paper, a safety risk assessment method which quantitatively calculates the risk of hazard using aviation safety data(i.e. aviation safety mandatory report, etc.) is proposed. By utilizing the proposed method, the existing process that safety risk is being subjectively assessed by safety inspectors can be supplemented. So that essential aviation safety policy decision making can be accomplished by the accurate result of safety risk assessment.

• 한국안전학회지
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• 제26권2호
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• pp.6-12
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• 2011

The failure probabilities of pipes in nuclear power plants due to stress corrosion are obtained using the P-PIE program, which is developed for evaluating failure probability of pipes based on the existing PRAISE program. Leak, big leak and LOCA(loss of coolant accident) probabilities are calculated as a function of operating time for several pipes in a domestic nuclear plant. The sensitivity analysis is also performed to find out the important parameters for the failure of pipes due to stress corrosion. The results show that the steady state oxygen concentration and steady state temperature are important parameters and failure probability is very low when the oxygen concentration is maintained according to the regulation.

• 보건교육건강증진학회지
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• 제27권1호
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• pp.49-60
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• 2010

Objectives: The purpose was to evaluate the effectiveness of participatory road safety education program for the lower grade in elementary schools. This program was developed based on the Activated Health Education model. Methods: Study design was compromise experimental group pre-post design. 456 students in 8 schools were nonrandomly assigned to study group(n=224) or control(n=232). The students finished self-administered questionnaire before and after education. Collected data was analyzed by using the SPSS. Results: 1. The common relevant factors in road safety knowledge and attitude were 'residential state' and 'experience of traffic accident'. 2. The knowledge showed that the case and control scored at 6.48 and 6.41 points before. After this intervention, the case and control scored at 8.38 and 6.51. The difference of the case was significant(p<0.001). 3. The attitude showed that the case and control scored at 19.67 and 19.63 before. After this, the case and control scored at 19.86 and 19.63. The difference of the case was significant(p<0.05). Conclusion: In order to implement the road safety education, children's socio-demographic characteristics were considered. Because this education was effective in both improving knowledge and attitude and bringing interest, various participatory program will be applied in road safety education for children.

• 대한교통학회지
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• 제32권5호
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• pp.431-440
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• 2014

ICAO에서 제시한 국가항공프로그램(State Safety Program, SSP)에 따르면, 국가의 항공안전 목표 달성을 위해 안전성과 측정 및 평가에 활용되는 안전성과지표(SPI)의 설정과 관리가 필수적이다. 이에 따라, 세계 여러 국가들은 자국의 실정에 맞는 SPI 수립을 연구개발하고 있다. 그에 반해, 우리나라는 2008년 국가항공안전프로그램이 제정된 이후로 지금까지 동일한 지표를 사용해왔으며, SPI 수립체계에 대한 체계적인 정책 사업 및 관련 연구가 미비한 실정이다. 따라서, 본 연구는 국내 SPI체계 개발의 일환으로 항공선진국인 유럽과 미국의 SPI 개발계획에 대한 동향 조사를 하고자 한다. 이를 위해 EU의 유럽항공안전국 (EASA), 영국의 민간항공국 (CAA), 핀란드의 교통안전국(FTSA) 및 미국의 연방항공청 (FAA) 사례를 분석했다. 도출 결과를 기반으로 국내외 SPI 개발계획 및 수립체계의 차이점을 밝혔다. 본 연구를 통하여 도출된 분석 결과들은 향후 국내 SPI 수립체계의 발전방향 제시하기 위한 기틀을 마련할 수 있을 것이다.

• 대한안전경영과학회지
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• 제4권2호
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• pp.23-32
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• 2002

The small-and-medium sized construction sites are in weak state of safety management because of the variable working environments, the lack of safety techniques and the weak economic conditions, and industrial accidents of these sites were occupied 60％ of the total construction accidents. Recently, the safety engineer's number are not to be enough at the small-and-medium sized construction sites. Therefore, the safety engineer's works are addition to more and more. This paper is a development of the integrated program which using composition of construction safety management expenses. It is an management tool which helps to saving time of construction safety engineer. A method of development composition, to used Brain Storming for a place of meeting to construction safety management counselors.

• 한국화재소방학회논문지
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• 제30권5호
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• pp.130-136
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• 2016

본 연구에서는 2007년부터 2013년까지 수행된 소방안전 및 구조 구급 분야 기술 체계별 연구개발비 투자 현황을 분석하였으며 이를 바탕으로 국내 소방안전 및 구조 구급분야 연구개발 역량에 대해 조사 분석하였다. 국민안전처 소방안전 분야 연구비는 점진적으로 증가하는 추세이며, 소방안전 및 특수재난 대응 기술과 소방안전 및 특수재난 예방 대비 기술 관련 R&D에 80%에 이상의 예산이 투자되었음을 알 수 있었다. 소방안전 및 구조 구급 R&D의 역량을 분석한 결과, 7점 만점 기준으로 절반(3.5점)에 못 미치는 중간 정도의 수준인 것으로 조사되었다. 향후, 국민안전처 소방안전 분야 연구개발 발전을 위해서는 자원에 대한 운용 능력이 향상될 수 있도록 예산/법/제도 등 지원 체계의 유연성 및 합리성이 확보되어야 하며, 추가적으로 성과물이 실용화, 사업화, 상용화가 될 수 있도록 성과 확산 프로그램 사업이 필요하다고 판단된다.

• 한국안전학회지
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• 제29권2호
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• pp.12-17
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• 2014

This paper is aimed to analyze the characteristics of simultaneous voltage, current and temperature signals for poor connection on electrical connector. In order to attain this purpose, detected were the current and voltage signals on electric wire with series arc, named arc signals, and also monitored were the changes of RMS, instantaneous value of waveform in time domain and temperature value with video. Two states are made normal state over $5kgf{\cdot}cm$ and poor connections state below $0.5kgf{\cdot}cm$ by screw gage. In the voltage signal case, the voltage drop was increased with which the current was increased. In the current signal case, poor connections at the time interval 1~4A all showed "shoulder", as distinct difference from the normal state shown waveform pattern. In the temperature signal case, poor connections are twice at 1A and five times at 4A in the normal state. The temperature continues insulation of electrical wiring and connector can be carbonized. The results of this study will be effectively used in developing the preventive devices and system for electric fire by poor connections.

• Journal of Positioning, Navigation, and Timing
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• 제12권3호
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• pp.257-269
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• 2023

This paper presents a method for detecting faults in data obtained from the Automatic Identification System (AIS) of surface vessels. The data include latitude, longitude, Speed Over Ground (SOG), and Course Over Ground (COG). We derive two methods that utilize two models: a constant state model and a derivative augmented model. The constant state model incorporates noise variables to account for state changes, while the derivative augmented model employs explicit variables such as first or second derivatives, to model dynamic changes in state. Generally, the derivative augmented model detects faults more promptly than the constant state model, although it is vulnerable to potentially overlooking faults. The effectiveness of this method is validated using AIS data collected at a harbor. The results demonstrate that the proposed approach can automatically detect faults in AIS data, thus offering partial assistance for enhancing navigation safety.