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CM at Risk의 국내 건설시장 도입 및 활성화 방안 연구
신성훈,서용칠,구교진,현창택 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
Nowadays, construction projects are increasing its complexities, risks and demands for greater' input and management skill. Also owners are gradually inclined to transfer their risks to other parties. In order to respond this situation, it is necessary that the different kinds of delivery systems suitable for the clients' needs be diversified and adapted to the Korean construction industry. In this background, the study is to present the approach to introduce CM at risk, one of the alternative delivery systems in Korea, by revising some regulations and proposing various types of this system.
국내 공공부문 설계시공일괄입찰방식의 낙찰자 선정방법 개선에 관한 연구
김만철,서용철,구교진,현창택 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
Design-Build is considered as the project delivery system to manage construction process more efficiently than design-bid-build. So Korea government has encouraged Design-Build in public sector. But single selection method of weighted criteria doesn't provide the greatest value to owner. Therefore, there is a need to improve selection method to meet owner's needs and project characteristics. This study proposes four types of selection method. Each of selection method is focused on price, qualification, time. The use of these selection methods enable owner to provide the greatest value.
남경우,서용칠,구교진,현창택 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
Logistics in construction project includes purchase, procurement and transportation on the network consisting of contractor, subcontractor, supplier, manufacturer, carrier and so on. Collaborations and integrations among the each participants play a key role. It is necessary that we take advantage of recent information technology in order to optimize logistics and achieve collaborative integration. The use of extensible markup language(XML) has been continued increasingly in recent years. This research aims at presenting conceptual Logistics system based on XML/EDI. Various participant in construction project will have more efficient and malleable Logistics atmosphere.
지성민,서용칠,구교진,현창택 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
In terms of the Safety, a risk of accident in construction industry is the most dangerous thing in any other industries. So, there have been many studies to improve the safety performance of construction projects. But, the most of them were dealt with controls in the job site and the contractor. For these reasons, the purpose of this study(Construction Safety Management) is two-part. : One is showing the basic items composed of prequalification in Construction Safety Management, and the other is improving the selection method to meet the owner's needs including a Contractor's Safety Management Performance.
이승훈,서용칠,구교진,현창택 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
The purpose of this study is to propose an efficient design-VE job plan and applicable methods in each phase of design process. This is for more effective and practical use of VE in design phase. This study focuses on differences of the VE target selection phase and function analysis phase in each phase of design process. In the phase of preliminary design, conceptual sketch, size, use, or major spaces of project are selected for VE target and function assessment step is skipped because present cost and function cost cannot be produced easily in early in early phase of design. At the end of preliminary design phase, function review phase is added which consists of function satisfactory indices review step and unsatisfactory function removal step.
History of WtE Technologies and Their Development in Korea
( Yong-chil Seo ) 한국폐기물자원순환학회 2022 ISSE 초록집 Vol.2022 No.-
Waste should be managed by the principle with the concept of ‘integrated waste management’, which includes four options (Reduce, Recycle, Waste to Energy (WtE) or Combustion, and Landfill) implementing in order with priority, and encourages all the options to be utilized in vital and complementary way. When this principle is applied, we are able to achieve zero landfill and circular economy. Since ‘Waste Management Law’ was enforced in 1986, such integrated waste management concept was applied with effective policies and regulations in Korea. In case of WtE, two times of actively adopted occasion since then. The first momentum was due to the policy that guided installation of numerous environmental facilities and infrastructures during 1990 ~ 2005. Most of the household waste incinerators with a capacity more than 100 tons/day were constructed during this period. The second was the policy related to introduction of SRF (Solid Refuse Fuel) for recovering energy from all the combustibles being dumped into landfill in 2008. Of course, a lot of policies on the waste reduction and recycling of wastes, such as separate collection, volume-based tipping, EPR, and food waste separation, etc. with the polluter (generator) responsibility concept, have been implemented. As the result, statistics show that around 60% of household wastes is recycled, and 24% of them is treated by WtE technologies today. As additional efforts towards circular economy, ‘Frame Act on Resource Circulation’ was recently enacted in 2018. The Seoul metropolitan landfill site will be closed in 2026 and no waste without pre-treatment such as incineration could be landfilled after 2030. Therefore, some portion of combustible waste, which has been dumped into landfill, must be either incinerated or processed with WtE technologies. However, still the government may not recognize the role of WtE for circular economy, and the adversity in waste management like waste crisis may continue. Also the local cities including Seoul are struggling to install a new WtE facility and to replace the aged facilities over 30 years of operation. These could be due to the lack of efforts to support the WtE facility installation and to resolve the public misperception. In this presentation, historical review of WtE facility installations in waste management with the appreciation of WtE to circular economy will be introduced. And the future direction on WtE in terms of policy, technology, present situation with main issues will be presented.
Volume Reduction Ratio and Decontamination Factor of the Bench Scale Radwaste Incineration Process
Seo, Yong-Chil,Yang, Hee-Chul,Kim, Joon-Hyung,Park, Hun-Hwee Korean Nuclear Society 1989 Nuclear Engineering and Technology Vol.21 No.4
A bench scale incineration process for the burnable radwaste has been constructed and operated at KAERI as a self-surpported development of incineration technology. The purposes of operating the process are to get experience in incineration, to analyze the characteristics of combustion and to test the performance of off-gas treatment units. Simulated paper and polyethylene wastes were incinerated. Volume reduction ratio and decontamination factor of the process have been determined to observe the economical efficiency and operational capability of the process. A methodology to estimate the acceptance limit of specific activity to an incineration facility by using a decontamination factor and to calculate the volume reduction ratio of the facility is introduced. The acceptance criteria for different radionuclides in the combustible waste at the bench scale incineration process are suggested using this methodology.