사용후핵연료 파이로처리기술의 특허 동향 분석

유재형,김정국,이한수,서인석,김은가,Yoo, Jae-Hyung,Kim, Jung-Kuk,Lee, Han-Soo,Seo, In-Seok,Kim, Eun-Ka 한국방사성폐기물학회 2011 방사성폐기물학회지 Vol.9 No.4

사용후핵연료의 파이로처리기술에 대한 국내외 특허동향을 분석하였다. 1975-2009년에 걸쳐 한국, 미국, 일본 및 유럽연합에서 출원된 특허에 대하여 출원국별, 출원인별, 연도별 및 세부기술분야별로 구분하여 그 내용을 비교함으로써 파이로처리기술 개발 현황을 분석하였다. 그리고 주요 출원인의 세부기술별 특허활동지수로부터 특정분야의 기술개발 편중도, 분석대상 특허의 피인용횟수와 패밀리수로부터 각국의 기술 경쟁력을 조사하였다. 또 장차 파이로처리기술의 실용화에 대비하여 필수 요소기술들을 도출하고 그에 대한 현기술 수준과 기술개발동향 등을 파악하였다. Analysis of foreign and domestic patents for pyroprocessing technology of spent nuclear fuels was carried out in this study. The current status of pyroprocessing technology development in such countries as Korea, USA, Japan and EU was analyzed by classifying the patents for 1975 through 2009 according to registration country, assignee, calendar year and technology area. The major assignees' activity indices were compared in order to find out whether there is any concentrated area of technical details. Technology competitiveness of the countries was also investigated from the information of patent citation number and family size. Furthermore, some essential unit technologies required for the commercialization of pyroprocessing were derived and examined in the aspect of the state of art as well as the trend of technology development.

고온전해분리 기술의 개요 및 기존 핵연료주기 대체 기술로서의 적합성 검토

유재형,이병직,이한수,김응호,Yoo, Jae-Hyung,Lee, Byung-Jik,Lee, Han-Soo,Kim, Eung-Ho 한국방사성폐기물학회 2007 방사성폐기물학회지 Vol.5 No.4

The technical feasibility of a pyroprocessing of PWR spent fuels to recover nuclear fuel materials, uranium and transuranic elements group(TRU), was examined in this study. Also its applicability as a new fuel cycle technology in terms of non-proliferation was investigated. First, various unit processes were combined to a pyroprocess. Then the flow aspects of such materials of issue as uranium, transuraniums, rare earth, noble metals and heat generating elements were examined on the flowsheet, which was obtained by the assumptions on the basis of various experimental results in this work or separation data collected from literatures. Consequently, the calculated results of the material balance for the whole process showed that uranium and TRU could be recovered as products by 98.0 % and 97.0 %, respectively, from a PWR spent fuel while removing the other elemental groups into radioactive wastes. On the one hand, the TRU product was found to emit a considerable amount of ${\gamma}$-ray as well as neutrons favorably contributing to the strategy of proliferation resistance.

연구발표논문초록 ( 분리공정 (Ⅰ) ) : 액막법 분리공정의 연속식 추출탑의 해석

유재형,이원경,박현수,강웅기 ( Jae Hyung Yoo,Won Kyung Lee,Hyun Soo Park,Woong Ki Kang ) 한국화학공학회 1984 추계총회초록집 Vol.- No.-

방사성폐기물의 화학처리공정에 사용되는 유동관식 장치의 해석 : 물질전달 수율에 미치는 매개변수들의 민감도

유재형,이병직,심준보,김응호,Yoo, Jae-Hyung,Lee, Byung-Jik,Shim, Joon-Bo,Kim, Eung-Ho 한국방사성폐기물학회 2007 방사성폐기물학회지 Vol.5 No.1

It was intended in this study to investigate the effects of various parameters on the chemical reaction or mass transfer yield in a tubular-type nuclear waste treatment equipment. Since such equipments, as a tubular reactor, multistage solvent extractor, and adsorption column, accompany chemical reaction or mass transfer along the fluid-flowing direction, mathematical modeling for each equipment was carried out first. Then their behaviors of the chemical reaction or mass transfer were predicted through computer simulations. The inherent major parameters for each equipment were chosen and their sensitivities. affecting the reaction or mass transfer yield were analyzed. For the tubular reactor, the effects of axial diffusion coefficient and reaction rate constant on the reaction yield were investigated. As for the multistage solvent extractor, the backmixing of continuous phase and the distribution coefficient between fluid and solvent were considered as the major parameters affecting the extraction yield as well as concentration profiles throughout the axial direction of the extractor. For the adsorption column, the equilibrium constant between fluid and adsorbent surface, and the overall mass transfer coefficient between the two phases were taken as the major factors that affect the adsorption rate.

ISDN운용보전에 관한 고찰

유재형(J.H. Yoo),송중구(J.G. Song),조영현(Y.H. Cho),김현우(H.W. Kim) 대한전기학회 1987 대한전기학회 학술대회 논문집 Vol.1987 No.7

IoT 활용 소규모 대기배출시설 관리시스템 운영 관리

유재형(Yoo Jae-Hyung),이창재(Lee Chang-Jae),오민근(Oh Min-Geun),오윤주(Oh Yoon-Ju),심재형(Shim Jae-Hyung) 대한환경공학회 2020 대한환경공학회 학술발표논문집 Vol.2020 No.11

국제형사재판소(ICC)의 역할과 과제

유재형(Yoo Jae-Hyeong) 동아대학교 법학연구소 2008 東亞法學 Vol.- No.42

The purpose of this research is to figure out what the main role of ICC, which was established in Jul 1<SUP>st</SUP> 2002, is and what problems ICC has currently. The main purpose of ICC is to guarantee international humanitarian order, which can contribute to international peace in 21<SUP>st</SUP> century, as it punishes individual who violates international humanitarian law. Considering the purpose, this research tried to analyze historical background of ICC establishment from the aspect o f construction of international humanitarian law. After that, it analyzed the structure and the nature of ICC, which is designed to conduct given role, based on Rome Statute in order to deduct following problems which ICC is facing currently. (1) Resistance of strong countries and necessity of cooperation (2) The problem of ‘self-referral’ (3) The problem of magnificent cost required for labor and administration (4) The problems concerning the crime of aggression (5) The problem of ‘double standard’ for human rights In conclusion, the establishment of ICC is a historically meaningful event as it sets up principles of judging individual’s behavior as an international crime for the first time in the history of international law, and as it indicates establishment of permanent court which is equipped with substantial organization and process. ICC is expected to play a significant role to maintain international peace and security, which are deemed to be the most important principles in international law. However, it is required to make global efforts to solve given problems for ICC to realize its aforementioned principles effectively.

조약(條約)의 위반(違反)과 종료(終了)에 관한 연구

유재형 ( Jae Hyeong Yoo ) 청주대학교 법학연구소 2003 法學論集 Vol.20 No.-

Breach of a bilateral treaty by one of the parties does not ipso facto put an end to the treaty, but only(apart from any questions of international responsbility which arise) entitles the other party to invoke the breach as a ground for terminating the treaty or suspending its operation. This has been accepted as customary international law where the breach is a material breach, or breach of an essential provision of the treaty; however, the matter is less certain in respect of other kinds of breach. Those maintaining that any breach creates a right for the other party to cancel the treaty maintain that it is not always possible to distinguish essential from nonessential provisions, that the binding force of a treaty protects nonessential as well as essential provisions, and that it is for the injured party to consider for itself whether violation of a treaty, even in its less essential parts, justifies its cancellation. The Vienna Convention(Article60) provides that it is only a material breach of a bilateral treaty by one of the parties which entitles the other to invoke the breach as aground for terminating the treaty or suspending its operation in whole or in part. A "material" breach is defined as "a repudiation of the treaty not sanctioned by the Convention, or the violation of a provision essential to the accomplishment of the object or purpose of the treaty"(Article 60.3). A party may lose its right to invoke the breach if, after becoming aware of the facts, it expressly agrees that the treaty remains in force or continues in operation, or must by reason of its conduct be considered to have acquiesced in the maintenance in force or in operation of the treaty(Article 45). In the case of a material breach of a multilateral treaty the situation is more complicated. Since several states will be parties to the treaty, but not all of them will be affected by the breach in any but the most general way, a right to terminate the treaty needs to be carefully limited. Article 60.2 of the Vienna Convention provides for termination of the treaty only when the parties(other than the defaulting state) unanimously so agree; they may agree to terminate it in the relations between themselves and the defaulting state(which has much the effect of expelling the defaulting state from participation), or as between all the parties. Otherwise the remedy is by exercise of the right to suspend the operation of the treaty in whole or in part. The Vienna Convention goes on to provide that the first three paragraphs of Article 60(ie those so far mentioned) do not apply in certain circumstances. First, of course, they are without prejudice to any provision in the treaty applicable in the event of a breach. Second, they do not apply to provisions relating to the protection of the human person contained in treaties of a humanitarian character, in particular to provisions prohibiting any form of reprisals against persons protected by such treaties. In conclusion, as long as the peaceful resolution between the intended partise is primary obligation (Article 65. 2·3), it is not possible to go ahead, in regard to the relief of the party in good faith resulting from the breach, beyond that of termination or suspension of the operation of a treaty regarding "material breach" as defined by the Article 60 of the above mentioned convention, given the current situation. Accordingly, procedure must be clarified, and misuse of power in operation should be prevented in this case.

중형엔진용 일체형 피스톤의 구조강도 평가

유재형(Jae-hyeong Yoo),손정호(Jung-ho Son),김응남(Eung-nam Kim) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11

A piston in a medium speed diesel engine is a key component and is subject to the mechanical load over 200bar and the high thermal load. Then, the high structural reliability is required to the piston in the marine diesel engine. 2-parts piston which is assembled with a forged-steel crown and a cast iron skirt is widespread. In this paper, the availability of the monoblock-type piston which was made of the nodular cast iron was investigated. In order to confirm it, FE analyses and strength evaluation were performed. In FE analyses, the mechanical contact between neighboring components such as piston pin and connecting rod was taken into account. Additionally, the effect of the inertia force and the side force on structural behavior and strength was confirmed. The characteristics of deformation under each loading were studied.

코로나 검체 채취 로봇을 위한 Swab Module 메커니즘 설계

유재형(J. H. Yoo),김정률(J. R. Kim),정수훈(S. H. Jung),김계리(K. R. Kim) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월

최근 장기화되고 있는 신종 코로나바이러스(COVID-19)의 유행은 필연적으로 선별 진료 인력의 확충을 야기시키고 있다. 하지만 진료 인력들은 큰 업무 부담과 함께 대면 진료 시의 코로나 감염 위험성에 노출되어 있기 때문에 정상적 업무 수행에 큰 어려움을 겪고 있다. 이러한 의료인력의 부족과 대면 진료의 위험성 문제를 해결하기 위해 최근 자동화된 비대면 코로나 검체채취로봇(Sampling Robot)에 대한 연구가 활발히 이루어지고 있다. 검체채취로봇 자동화를 위해서 채취가 이루어지는 제한된 부스 공간 내에 Swab 과 Universal Transport Medium (UTM) 수집을 위한 여러 가지 Module 들이 배치되어 있어야 한다. 따라서 좁은 면적에서 Swab 을 효율적으로 배치하는 것이 중요하다. 본 연구에서는 Swab Holder 의 높낮이를 변경할 수 있는 Snap Fit 구조를 적용하여 제한된 공간에서 효율적으로 Swab을 배치할 수 있는 Swab Module 을 설계하고 제작하였다. Swab Holder 는 Swab 이 Grip 된 다음 Holder 가 스프링 메커니즘에 의해 높이가 낮아져 로봇의 다음 Grip 동작에 대한 간섭을 제거하였다. 유한요소해석과 힘 측정 실험을 통해 Swab Holder 의 Snap Fit 메커니즘의 구동이 최적화된 설계 파라미터를 선정하고 시제품을 제작하였다. Swab Module 의 시제품은 로봇 Gripper 의 직경과 끝단 길이를 고려하여 40 mm 의 간격과 40 mm 높이 단차를 주어 교차형태로 Swab 을 배열하여 400 x 85 mm 면적에서 20 개의 Swab 이 배치되도록 제작되었다. 검체 채취 로봇과 함께 배치된 부스 내에서 효율적으로 Swab 을 배치하는 것을 확인하였고, 추후에는 실제 검체 채취 로봇 시스템에 적용하고 배치 효율성과 동작성을 확인하고자 한다.