• Bulletin of the Society of Naval Architects of Korea
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• v.30 no.2
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• pp.44-52
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• 1993

선박에 있어서 철의장품은 종류와 수량이 다양하고 형상이 불규칙하여 대부분의 사업장에서 설계 전산화가 이루어지지 못하고 있는 실정이다. 의장설계실에서는 이를 전산화하기 위하여 먼저 철의장품의 표준을 제정 및 극대화하고 설계작업절차와 물량의 흐름을 전산과 연계하여 체계화 및 표준화하였다. 또한 선박의 전구역에 설치되는 철의장품들을 관련 양식과 함께 국제표준을 근거로 BASICA CADDS, SURFACE DESING, SDDP(structural Design ＆ Detailing Package) SOFTWARE를 이용하여 2차원(2-dimension) 및 3차원(3-dimension) 데이터베이스(database)화 하였으며 이를 POP-UP MENU를 이용, 쉽게 선택함으로써 모델링(modeling) 작업시수를 대폭 감소 시켰으며, 그래픽(graphic)에서 추출한 의장품의 데이터(data)를 의장품의 표준정보 FILE과 연계하여 라벨(LABEL) 및 치수(DIMENSION)를 기입하여 배치도를 추출하고 의장품의 제작, 설치, 계산 및 관리에 소요되는 설치도, 제작도 및 관련 보고서인 BOM(bill of material), PML(pallet material list), 의장제작품 LIST, COG(center of gravity), 관리점 등을 자동추출 및 관리전산망(PC-lan)과 연계할 수 있는 DECOM(철의장 전산설계 전용 package)을 89년에 개 발하여 의장설계에 적용하여 왔으며 ORACLE사의 RDBMS(relational database management system)를 도입하여 이를 보완하므로써 정보의 일관화 및 공유화가 가능하게 되었다. 그 결과 설계 M/H절감, 생산성 향상, 자재 및 관련 정보 전달에 혁신적인 변화 향상을 가져오게 되었다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2000.04a
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• pp.357-360
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• 2000

본 논문은 철의장품(steel outfit) 조선기자재를 생산하는 업체들의 품질경영실태를 분석하여 한국의 철의장품 조선기자재 생산업체의 특성에 맞는 효과적이고 효율적인 품질경영시스템을 개발하고자 한다. 조사 대상업체는 ISO 9000 품질인증을 획득한 부산 경남 인근의 7개 업체로서 최근 99년까지 지난 3년간 실시한 본 심사와 예비심사에 나타난 심사자료를 근거로 분석하였다. 종업원수와 사급여부에 따라 7개 업체를 2개의 그룹으로 나누고 ISO 9000 품질인증의 요구항목별 지적사항의 수에 따른 파레토챠트를 작성하였다. 철의장품 조선기자재 생산업체의 품질경영시스템의 관리에서 ISO 9000 품질인증의 어느 요구항목이 가장 중요한 중점관리항목들인가를 찾아보고 SAS를 이용하여 중요 요구항목들과 업체들의 통계적 관련성을 살펴보았다. 한국 조선업의 세계적인 수주량 선점에도 불구하고 철의장품 조선기자재 산업체들의 수주조건 악화에 따른 단가의 하락으로 점차 열악해져 가는 조선기자재산업의 현실에 적합한 품질경영시스템을 개발하기 위해서 ISO 9001 요구항목에는 포함되지 않지만 조선기자재산업의 품질경영시스템의 특성상 반드시 포함되어야 할 중요한 추가 요구사항들의 구체적인 사례들을 제시하였다. 마지막으로 중요 요구항목별 심사자료 유형별 그룹별 통계적 관련성을 3원 분할표를 이용하여 설명하였다.

• Special Issue of the Society of Naval Architects of Korea
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• 2006.09a
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• pp.106-111
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• 2006

The steel outfitting structures installed in engine room are vibrated by an excitation of the engine and the propeller. Vibration problems such as cracks and fitting breakages are mainly induced at the near range of the resonance. The excitation frequency estimation is possible by engines and propeller specifications, but the natural frequency of a steel outfitting structure is not easily estimated due to the complication and variety of the designed shape. This paper represents natural frequency data of simple steel outfitting structures. As a vibration analysis tool, MSC/NASTRAN was used to calculate natural frequencies. Natural frequencies were compared in case of the shape and boundary condition changes of simple models, and anti-vibration models of the steel outfitting structures were presented on the basis of results.

• Journal of the Korean Society of Marine Environment & Safety
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• v.29 no.7
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• pp.950-957
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• 2023

For safe mooring and towing between the ship and port, the equipment must be designed in accordance with the relevant international regulations. However, some small shipyards and engineering companies often do not fully comprehend the core contents. Therefore, the international regulations regarding towing and mooring equipment are reviewed and the bollard and chock are newly developed based on the Mooring Equipment Guideline 4 (MEG4) standards. A bollard is a mooring equipment used to fix a mooring rope to the hull. It has two columns and is mostly used in a figure eight pattern knots under the mooring condition. The chock, which is used to change the mooring rope direction coming into the ship from outside, is manufactured using a casting with curvature. The two mooring equipment are widely used in the stern, bow, and mid-side. Owing to the increase in the size of container vessels and LNG ships, the mooring rope load has increased and the safe working load of the mooring equipment must be revised. This study summarizes and examines the results of the allowable stress method obtained using finite element analysis modelling. To consider the mesh size effect, a reasonable criteria was suggested by referring the existing class guidance. Additionally, the safe working load was verified through nonlinear collapse analysis, and the elastic region against load increments was confirmed. Furthermore, the proposed evaluation method can be used to develop similar equipment in the near future.

• The Safety technology
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• no.192
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• pp.24-26
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• 2013

지난 1980년 설립된 (주)오리엔탈정공은 창립 초기 단순히 철의장품 생산에만 주력했다. 하지만 조선해양분야에서 최고의 장인기업으로 우뚝 서겠다는 일념으로 사업분야를 지속적으로 확장한 결과 현재는 선박용 기계품 제작사업과 대형 상부 구조물 제작사업, 해양플랜트 특수 지원선 건조사업 등으로 업무영역을 특성화, 전문화했다. 또 (주)오리엔탈정공은 일본, 중국, 베트남 등 세계 각지에 현지 법인을 설립해 더욱 체계적이고 전문적으로 사업 다각화를 추진하고 있다. 고객과의 신뢰를 최우선으로 생각하고, 수십 년간의 건조 경험에서 축적된 기술력과 연구 개발활동을 집약한 결과였다. 여기에 더해 최근 이곳에서는 또 한 번의 도약을 준비하고 있다. 바로 철저한 안전관리를 바탕으로 재해 없는 일터를 만들기 위해 매진하고 있는 것이다. 체계적인 안전관리시스템과 자율안전관리를 통해 무재해 사업장을 조성해 나가고 있는 (주)오리엔탈정공을 찾아가 봤다.

• IE interfaces
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• v.14 no.2
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• pp.198-204
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• 2001

The ISO 9000 family of international quality management standards were revised on 15 December 2000. The ISO 9001:2000 standard is used for certification/registration and contractual purposes by organizations seeking recognition of their quality management system(QMS). We summarize key contents changed in ISO 9000:2000 family standards. To comply with ISO 9001:2000, we analyze the current QMS for steel outfit industry, using audit results from ISO 9001:1994 for seven steel outfit firms during last three years. We investigate statistical relationships between ISO 9001:2000 and ISO 9001:1994 requirements from a three dimensional contingency table with audit results. We observe that the importance of requirements of the ISO 9001:2000 sections makes a difference between companies.

• Journal of the Society of Naval Architects of Korea
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• v.46 no.3
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• pp.325-334
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• 2009

Generally, functional design of FPSO has been done by the engineering firm designated by ship owner. Main equipment such as topside facility is imported from abroad. But sometimes, OFE (Owner Furnished Equipment) does not satisfy the PND (Product Need Date) of each production stage because the delivery date of OFE is not scheduled to satisfy the PND. And sometimes many loose items and equipment are complex from engineering which does not consider pre-outfitting. Main objective of this study is process improvements by maximizing pre-outfitting rate in the stage of equipping STP (Submerged Turret Production), one of main equipment on FPSO. In this study, we analyzed the factors which obstructed pre-equipping STP using the past records of FPSO projects.

• Journal of Conservation Science
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• v.30 no.3
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• pp.317-327
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• 2014

Iron objects excavated from the sites of Mahan and Baekje are dominated by swords, spearheads and arrowheads. Spearheads usually have a function of weapon and swords with ring pommel are considered fancy articles because of ornament in ring pommel. In Gongju Suchon-ri site, the central type and the local type of the Baekje tombs co-exist together. The sword with ring pommel, the long sword and spearheads were excavated. They are investigated metallurgically and we focused of their functions and manufacturing techniques. Solid carburizing technology and quenching of heat treatment applied the sword with ring pommel was presumed as fancy article in the late 4th century while these techniques didn't apply spearhead from same tomb. This informed that the central government of Baekje had high technology on iron manufacture in 4th century. In case of local gentry, they didn't apply this high technology to mass-produced spearheads, even though they had it. Thus, it is able to say the sword with ring pommel was applied techniques of the central government and spearheads, the weapons were applied techniques of local societies.

• Archives of design research
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• v.12 no.2
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• pp.157-168
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• 1999

Stone in the Cho Sun Dynasty has been used as the material of industry arts, widely building materials and an important material for the artistic design. But it has been generally used as an use of practical living Product like, suban, a metal printing type, a fire place, a pillowcase, a pencil case, etc, and ornament with the quality of stone material and the aesthetic view. There are several problems as like size, quantity, delivery and processing method with the stne material according to its variety and selection. Accordingly it has been studied through the whole process of shape, a material selection of design and processing method as well as studying about small stone crafts which were manufactured in the Cho Sun Dynasty, considering these problems. Stone crafts in Cho Sun Dynasty has been widely used as a living tool. There was some what difference on manufacturing purpose on its technique of folk crafts of stone crafts, but, through the research of collected crafts, they were almost the same that social need, user's taste and hobby in those days were reflected in. In the result of analysis as dividing the stone crafts into daily living product, stationery and tool, the major of daily products have been manufactured with emphasis of practicability. And they have been manufactured from agalmatolite for the propose of use. further, kitchen product had no design due to the function and living products which has been used in the main living room has been carved with the decorative expression of the various form by using intaglic, relieve, inlaid technique, etc. For the stationery, it has been characterized with aesthetic point considering the decorative effects & selection of material in accordance with use. A material for manufacturing has been used in the range of agalmtolite, atopaz, a sapphire, white stone etc. As the result of this research, It was noticeable that there was the spleudidness on the expression of design and carving. It was also noticeable that black stone and guanite have been widely esed because it didn't need the delicacy as a tool.