• Journal of the Korea Safety Management & Science
• /
• v.16 no.3
• /
• pp.295-304
• /
• 2014

The purpuse of this study is to find factors on the recognition by people involved in occupational safety and health of KOSHA 18001, the need of KOSHA 18001 certification, and the compliance by each medical institution with KOSHA 18001 review standards to help medical institutions introduce and use OSHMS. There was a survey of people involved in occupational safety and health at 300 local general hospitals with 100 or more beds that were registered with the Korean Hospital Association in 2012. The survey included the recognition of KOSHA 18001, the need of certification and the compliance by medical institutions of the occupational safety and health. A total of 132 people responded, of which an analysis of 126 cases was conducted except 6 cases poor in information.

• The KSFM Journal of Fluid Machinery
• /
• v.8 no.3 s.30
• /
• pp.16-25
• /
• 2005

The purpose of this study is localization of safety relief valves for Nuclear Service. The safety relief valve is the important equipment used to protect the pressure vessel, the steam generator and the other pressure facility from overpressure by discharging the operating medium when the pressure of system is reaching the design pressure of the system. We developed design technology used FEM ' CFM about safety relief valve for Nuclear Service according to ASME (or KEPIC) Code and KHNP's Technical Specification. To prove validity of a design technology, actually, we manufactured and inspected and tested the sample products designed according to a developed technology. The capacity qualification test was achieved according to requirement of ASME(or KEPIC) Code by NBBI and the functional qualification test was achieved according to ASME QME-1 for operating condition in technical specification of KHNP by NLI. Therefore we have to achieve the development of safety relief valves for Nuclear Service with our own technologies.

• The Journal of Society for e-Business Studies
• /
• v.10 no.1
• /
• pp.121-134
• /
• 2005

The MANET has many problems in security despite of its many advantages such as supporting the mobility of nodes, independence of the fixed infrastructure, and quick network establishment. In particular, in establishing security, the traditional certification service has many difficult problems in applying to the MANET because of its safety, expandability, and availability. In this paper, a secure and effective distributed certification service method was proposed using the Secret Sharing scheme and the Threshold Digital Signature scheme in providing certification services in the MANET. In the proposed distributed certification service, certain nodes of relatively high safety among the mobile nodes consisting of the MANET, were set as privileged nodes, from which the process of issuing a certification started. The proposed scheme solved problem that the whole network security would be damaged by the intrusion to one node in the Centralized Architecture and the Hierarchical Architecture. And it decreased the risk of the exposure of the personal keys also in the Fully Distributed Architecture as the number of the nodes containing the partial confidential information of personal keys decreased. By the network simulation, the features and availability of the proposed scheme was evaluated and the relation between the system parameters was analyzed.

• Journal of Korean Association for Spatial Structures
• /
• v.20 no.1
• /
• pp.12-17
• /
• 2020

• Proceedings of the Safety Management and Science Conference
• /
• 2000.05a
• /
• pp.1-7
• /
• 2000

If it is so restore in the enterprise competition that it enter into international market introduction and fixing Safety It Health Management System was become essential part of corporate management. It Is for Introduction of Safety & Health Management System throughout ISO 14001 Method that is desirable propulsive propensity for Introducing of safety & Health Management System for certification from now on in enterprise.

• Journal of Aerospace System Engineering
• /
• v.15 no.3
• /
• pp.20-29
• /
• 2021

As the feasibility of urban air mobility (UAM) service using electric vertical take-off and landing (eVTOL) aircraft increases due to aircraft electrification, distributed propulsion, and artificial intelligence technologies, the U.S. and European aeronautical societies have been improving their certification system and regulations for the type certification of eVTOL. The improved certification system is expected to be ready in the near future, after the European Union Aviation Safety Agency (EASA) proposed the VTOL Special Condition, SC-VTOL in 2019. However, the current domestic certification system is still insufficient to properly respond to eVTOL. This study investigated the development trends of foreign eVTOL and certification systems, identified considerations to improve the domestic certification system, and proposed the measures for type certificates and type certificates validation of eVTOL based on the comparison between SC-VTOL and Korea airworthiness standards (KAS).

• Journal of Korea Entertainment Industry Association
• /
• v.14 no.8
• /
• pp.255-264
• /
• 2020

The purpose of this study was to compare and analyze the differences before and after certification for internal members of nursing hospitals and Western hospitals that received the certification system of medical institutions after conducting a survey on 297 members of nursing hospitals and Western hospitals, SPSS 26.0 was used, and to understand the effect of improvement of member satisfaction, job stress, and medical service on the hospital operation effect. As for the hospital operation effect of a nursing hospital, it was revealed that the higher the satisfaction of the members and the improvement of the medical service, the higher the effect of the hospital operation. In the case of Western hospitals, the higher the satisfaction of the members and the improvement of the medical service, the lower the job stress, the more the hospital operation effect can be seen to increase. As the basic value system of the medical institution certification system is the improvement of patient safety and quality of care, it is believed that the effect of the certification system was higher than that of Western hospitals due to mandatory certification in nursing hospitals.

• Journal of the Korean Society of Safety
• /
• v.32 no.3
• /
• pp.34-40
• /
• 2017

The catastrophic collapse of the in-boiler scaffolding system in the two thermal power plants occurred in March and April 2012. After site investigation and document review, it was found that the specialized scaffolding system was imported for overhaul & maintenance and that the system did not get the safety certification at the import. In this regard, this study developed & proposed an access platform and a support for the vertical tube section of the super heat as well as a variable-length platform for the horizontal tube section, satisfying the domestic certification standards. The access platform was developed to be easy to handle by the worker with a weight of about 0.069 kN, which could reduce the risk of falling accidents and workers' musculoskeletal diseases. For the variable-length platform, it is possible to cope with various changes in length between the horizontal tubes associated with the increase of rigidity in the overlapping and the elimination of the protrusion.

• Korean Chemical Engineering Research
• /
• v.61 no.1
• /
• pp.68-73
• /
• 2023

Smoke masks have attracted great interests and have been supplied widely for the improvement of the safety during fire evacuation. However, there is not sufficient research on the practical utility, certification status and easy-donning about commercial smoke masks, therefore it is difficult to determine the actual usefulness of the smoke masks. In this study, we conducted a survey on users' perceptions and experiences about the smoke masks, and investigated the status of certification of 54 commercial smoke masks. We also performed donning tests and examined degrees of discomfort for 4 types of the smoke masks. Although 22% of 235 respondents had experienced the smoke masks before the test, and 23% of the respondents did not know the smoke masks, 93% of the respondents expected that the smoke masks could protect users from fire smokes and toxic gases. It was found that 41% of the commercial smoke masks did not certify according to domestic or overseas performance standards. Most certification standards have not effectively regulated maximum wearing time for the smoke masks. Only ASTM E 2952 and KFIS 024 had specific standards for the maximum wearing time of 30 s. As a result of donning tests for 4 types of smoke masks, the wearing time of the hood-type mask and self-contained smoke mask exceeded 30 s, therefore these types of smoke masks might increase the required safe evacuation time. On the other hand, it was also found that short education about the donning could reduce the wearing time by 19% and numbers of improper wearing by 89%.

• Current Industrial and Technological Trends in Aerospace
• /
• v.6 no.2
• /
• pp.154-160
• /
• 2008

There are typically two categories of Flight Test Programs- commercial and military. Commercial flight testing is conducted to certify that aircraft meets all applicable safety and performance requirements of government certifying agency. Military programs differs from commercial in that the government contract with the aircraft manufacturer to design and build an aircraft to meet specific mission capabilities. The final phase of military aircraft flight test is the Operational Test(OT). OT is conducted by a government-only test team with the dictate to certify that the aircraft is suitable and effective to carry out the intended mission. This paper presents the current trends of military aircraft airworthiness certification using civil aircraft certification practices.