• Journal of the Korean Society of Safety
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• v.38 no.5
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• pp.36-42
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• 2023

In this study, 50 ABE-type hard hats were procured from five certified commercial manufacturers, and shock absorption tests were conducted in accordance with Protective Equipment Safety Certification Notice No. 2020-35. The tests were performed under both high- and low-temperature conditions, adhering to safety helmet testing standards. The highest shock transmission ranges were recorded in the tests, with an average energy range of 2,600-4,108 N at high temperatures and 2,316-3,991 N at low temperatures. All five hard hat models demonstrated a maximum transmitted impact force below 4,450 N, without any loss of cap and attachment functionality, confirming their compliance with performance standards. Furthermore, we evaluated the side impact performance of the safety helmets of each company, with an average range of 4,722-5,267 N. Company A exhibited the lowest measurement at 4,722 N. Comparing these results with international safety standards and the national shock absorption test criteria, it was observed that the maximum transmitted shock value using government-specified impact weight falls within the range of 4,450-5,000 N. However, it was noted that developed countries have established specific standards for the side impact forces on safety helmets, which are legally mandated. Consequently, it is imperative for South Korea to enhance its safety helmet side impact performance test methodology to align with domestic standards in the future.

• The Korean Journal of Blood Transfusion
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• v.23 no.2
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• pp.152-161
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• 2012

Background: Since Jan. 2012, for performance evaluation of viral reagents, analysis of domestic samples has been recommended in order to obtain approval from the KFDA when they are first introduced to Korea. This regulation requires the standard domestic materials driven from locally infected samples. We tried manufacturing the plasma working standards of HBV, HCV, and HIV NAT using a mixed titer of viral loads. Methods: Forty three HBV DNA positive plasmas, 25 HCV RNA positive plasmas, and 26 HIV RNA positive plasmas were evaluated according to viral load and genotype. Several plasma units, which had high-titer viral loads and the common viral genotypes in Korea, were selected as the source materials for each viral standard. To adjust the appropriate concentration based on the detectable range of variable viral reagents, the source plasma was diluted to several concentrations, divided into small vials, and analyzed for quantification. Results: The 13 plasma working standards, which had variable viral loads for the mixed titer performance panel of HIV, HCV, and HBV NAT, were produced. Conclusion: These national standard materials were first produced in order to supply the mixed titer performance panel for the viral NAT reagent of the level IV transfusion related high-risk group in Korea.

• Journal of the Korea Society of Computer and Information
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• v.22 no.2
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• pp.65-73
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• 2017

The objective of this study is to suggest the templates for the terminology standardization cases of safety standard on integrated management system, so that integrated management of safety standards is introduced to replace redundant, or conflicting functions and performance of these standards. And to carry out the terminology standardization enables management efficiently. Therefore this study suggests and analyzes cases of terminology standardization of domestic and international research trends. In addition to proposes a architectural schema for disaster safety standard and writing disaster safety standardizations of the International Organization for Standardization. For the objectives, the guidelines on standard terminology policy, terminology publication and guide development proposed by the International Organization for Standardization. Disaster safety standards were applied in order to build and utilize integrated management system of disaster safety standards through domestic and foreign cases. Throughout the result of this study, this study will contribute to the analysis and application of semantic knowledge based analysis throughout the ontology information linked the vocabulary to vocabulary by making the template of the disaster safety standards for easy to use and simple etc. This study is to expect traceability for the principle national disaster safety standards resource elements.

• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.1355-1357
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• 2008

Reflection measurements are critical to the evaluation of display performance under ambient illumination conditions. Various hemispherical reflection methods are evaluated for their suitability and robustness across display technologies. The standard integrating sphere method is compared to a sampling sphere apparatus.

• Proceedings of the Earthquake Engineering Society of Korea Conference
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• 1999.10a
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• pp.129-136
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• 1999

Several seismic design standards for fill dams adopted in Japan USA and Korea are reviewed in this study. The review on those standards is tried to provide a thinking way for a new seismic design standard which is urgently requested by the government I. e. the Ministry of Construction & Transportation and the Ministry of Science & Techniology. This study suggest that as a new seismic design standard of fill dam including concrete face rockfill dam(CFRD) the modified earthquake intensity method based on dynamic analysis be adopted in Korea while the dynamic analysis method should be used in evaluatiing the performance of fill dams precisely.

• Fire Science and Engineering
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• v.24 no.1
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• pp.15-23
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• 2010

Placement method for fire detectors prescribed in current fire safety regulation is just about placing a prescribed number of detectors according to the areas. However, this regulation has no scientific basis and standards from foreign countries are just introduced and fire detectors are installed complying with them. There are two standards in designing fire protection systems; Prescriptive-Based Design that follows stipulated regulations like fire safety standards and Performance-Based Design based on engineering knowledge such as fire dynamics, structural dynamics, mechanics of materials, fluid mechanics, and thermo dynamics. Recently, Fire Protection System Construction Business Act was revised so that fire protection systems can be designed using Performance-Based Design method ('05. 8. 4), though the method has not activated until now. In addition, the enforcement decree defines the range for specific objects of fire protection to which Performance-Based Design is applied ('07, 1. 24). At the moment, by manufacturing simulator so that formulas can be introduced and calculated with software in order to install fire detector of automatic fire detection systems keeping optimized distance, comparing the results with the state of fire detector placed according to Performance-Based Design and analyzing them, this study was intended to settle Performance-Based Design method in the future.

• Journal of Advanced Marine Engineering and Technology
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• v.31 no.6
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• pp.804-809
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• 2007

In order to provide reliability. reproducibility. objectivity of solid particle separation performance test on marine centrifugal purifier, an investigation had been done on solid test dusts. test standards and designation of a definite standard test dust In test specifications or standards. ISO 121031-1 A2 test dust is the best test particle to meet commercial and military fuel oil and lube oil requirements on marine standards.

• Proceedings of the SAREK Conference
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• 2009.06a
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• pp.614-617
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• 2009

Elastomeric Flexible Cellular Insulation is widely used in construction fields to prevent condensation and frozen pipes, reduce energy, and improve insulation. However, when Elastomeric Flexible Cellular Insulation has been installed in buildings in Korea, there was no standardization, which resulted in heat loss Therefore, insulation design standards need to be developed and from these standards, pipe insulation should be improved to increase its efficiency. This study estimates temperature and surface-emissivity according to the thickness of insulation to evaluate thermal performance.

• KIEAE Journal
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• v.13 no.2
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• pp.13-20
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• 2013

Today, the world energy consumption in buildings occupies more than 30%. In our country, the energy consumption in buildings also occupies 25% of the entire national energy consumption. With the increasing demand of energy saving in architectural fields, there is a more interest in low-energy construction. For these low-energy housings, our country is planning to apply the energy-saving design standards at the level of passive houses in 2017. However, there is still a limitation in energy saving only with the standards on the performance of envelope in buildings. This means that unless a building is airtight even though it was well-insulated, cooling and heating energy consumption will increase due to the infiltration and leakage. Therefore, this study aims to make a comparative analysis of airtight performance by conducting a blower door test on the housings applied with passive designs, analyze the reasons why most houses fall short of the airtightness standards, and complement the airtightness problems in the inadequate parts of the buildings in order to save building energy.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2012.05a
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• pp.387-388
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• 2012