• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.6 no.4
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• pp.369-385
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• 2008

The purpose of site monitoring and investigation is to offer the basic data for performance assessment and design of low- and intermediate-level radioactive waste(LILW) disposal facility by monitoring variations of main site properties continually in the stage of pre-operation, operation and post-closure. Main contents of site monitoring are as follows. In the stage of pre-operation, suitability evaluation for disposal facility and monitoring for constructing and operating disposal facility are performed. In the operation period, monitoring is performed including surroundings to research the influence to environment with operating disposal facility and operate safely and efficiently. In the post-closure period, monitoring about major site properties is performed to prevent the effect of radioactive waste from disposal facility and to secure long-term safety.

• Journal of the Korea institute for structural maintenance and inspection
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• v.14 no.6
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• pp.246-253
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• 2010

National major facilities have been rigorously investigated using regular safety inspections and precision safety diagnosis since the Special Law for Facilities Safety Management was made in 1995. However, the process of safety inspection and precision safety diagnosis could be doubted due to intervention of facility owner for safety level evaluation, competition to obtain low price order, and low technical skills of inspection companies. Although the management processes for evaluating the inspection companies were used for several years, the process should continue to improve in the safety inspection field. This study analyzed the recent evaluation system and the ratios of insufficient inspection. Estimation of national loss expenses to the insufficient safety inspection was investigated to recognize the necessity for the improvement of facility inspection process and evaluation system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.1
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• pp.138-143
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• 2011

Growing attention of a society to protecting weak people leads an increase of various social welfare facilities. Therefore, safety of the occupants at emergency situations, such as fire, must be considered as an important factor during the design and operation of those facilities. In this paper an exploratory study is carried out on a method quantitatively assessing the human evacuation safety of social welfare facilities. A evacuation simulation method, being routinely used in the evacuation analysis of passenger ships deriving 'Evacuability' as a quantity of safety, is applied to assess the human safety of a facility for single-moms. Based on the simulation results, the main factors that must be considered while carrying out the evacuation simulation for the human safety assessment of the facility are investigated.

• Fire Science and Engineering
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• v.23 no.3
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• pp.93-102
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• 2009

Recently, the number of child care facility and social demand for high quality child care service increase suddenly. Especially, social atmosphere about fire safety is more sensitive in Korea. The majority of the residents in a child care facility are composed of early childhood having difficulty to evacuate, and therefore the number of stories of a building and the appropriateness of a evacuation equipment play an important role in the evacuation safety. In this study, problems and improvements for the evacuation safety are dealt with the present conditions of child care facilities, the comparative analysis between domestic and foreign standards, the research on the actual condition of evacuation equipments, and so on. The study brings to a conclusion that it is necessary to systematize the regulations regarding fire safety, to connect fire-fighting facilities for design standards and operations of emergency preparation equipments, to improve the regulations for fire protection system such as the sprinkler system, and to restrict the facilities having fire hazards.

• Journal of the Korea Safety Management & Science
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• v.10 no.2
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• pp.187-193
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• 2008

Cross docking is a warehouse management concept in which items delivered to a distribution facility by inbound trucks are immediately sorted out and reorganized based on customer demands and are routed and loaded into outbound trucks for delivery to customers without actually being held in inventory in the distribution facility. In this research, the design of distribution facility for cross docking systems was studied. The objective of this research is to find the minimum number of receiving docks and shipping docks, respectively, in order to meet the daily demand of the distribution center. Two solution approaches are employed in modeling and solving the problem The first approach is mathematical modeling and the second approach is a simulation. The logic developed in the simulation model is expected to apply to the real world situation.

• Journal of the Korean Society of Visualization
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• v.9 no.4
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• pp.54-62
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• 2011

KAERI has developed a KALIMER-600 which is a pool-type sodium-cooled fast reactor with a 600MWe electric generation capacity. For a SFR development, one of the main topics is an enhancement of the reactor system safety. Therefore, we have a long-term plan to design the large sodium experimental facility to evaluate the reactor safety and component performance. In order to extrapolate a thermal hydraulic phenomena in a large sodium reactor, the thermal hydraulics phenomena is under investigation in a 1/$10^{th}$ water-simulant facility for the KALIMER-600. In this paper, we shortly described the experimental facility setup and the measurement of the isothermal global flow behavior. For the flow field measurement, the PIV method was used in a transparent Plexiglas reactor vessel model at around $20^{\circ}C$ water condition.

• Proceedings of the KIEE Conference
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• 2002.11b
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• pp.244-246
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• 2002

In this paper, We studied about effects of human safety due to leakage current on the point of cable connection for outdoor electrical facility in the submerged condition and conducted its evaluation in the testing field. In this case, the reason of leakage on the point of cable connection is caused by formation of electrical pass between the grounded outdoor electrical facility and the enclosure of electrical facility which is connected to grounding system.

• Proceedings of the KIEE Conference
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• 2002.11b
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• pp.247-249
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• 2002

In this paper, We studied, about effects of human safety due to leakage current on the point of cable connection for outdoor electrical facility in the submerged condition and conducted its evaluation in the testing field. In this case, the reason of leakage on the point of cable connection is caused by formation of electrical pass between the grounded outdoor electrical facility and the other outdoor electrical facility which is disconnected to grounding system.

• Journal of the Korea Safety Management & Science
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• v.13 no.1
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• pp.133-142
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• 2011

Overhead facility design problem(OFDP) is one of the shortest rectilinear flow network problem(SRFNP)[4]. Genetic algorithm(GA), artificial immune system(AIS), population management genetic algorithm (PM) and greedy randomized adaptive search procedures (GRASP) were introduced to solve OFDP. A path matrix formed individual was designed to represent rectilinear path between each facility. An exchange crossover operator and an exchange mutation operator were introduced for OFDP. Computer programs for each algorithm were constructed to evaluate the performance of algorithms. Computation experiments were performed on the quality of solution and calculations time by using randomly generated test problems. The average object value of PM was the best of among four algorithms. The quality of solutions of AIS for the big sized problem were better than those of GA and GRASP. The solution quality of GRASP was the worst among four algorithms. Experimental results showed that the calculations time of GRASP was faster than any other algorithm. GA and PM had shown similar performance on calculation time and the calculation time of AIS was the worst.

• Nuclear Engineering and Technology
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• v.41 no.6
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• pp.859-866
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• 2009

KAERI has worked on the development of an advanced spent fuel conditioning process (ACP) since 1997. A hot cell facility, termed the ACPF, has also been developed. The ACPF consists of two air-sealed hot cells. The results of a safety analysis as part of the license procurement process stipulated by the Korean Government showed that the facility was designed safely. After its construction, an integrated performance test was performed. The results of this test confirmed that the facility satisfies the design requirements.