• 환경위생공학
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• 제10권3호
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• pp.99-104
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• 1995

The objective of this study was to investigate the effect on denuclearization and decertification of flue gas by utilizing Mg( OH)$_{2}$ and NaOH as reagents in industrial boiler. We used packed absorber with Tellerette in all cases. And pH of circulation solution, rate of liquid per gas in absorber, COD concentration by pH variation in oxidation basin were inves- tigated. The following conclusions were obtained from experimental results: 1. Concerning running cost for reagents, Mg( OH)$_{2}$ reagent for treatment of flue gas was more economical than NaOH. 2. While Mg( OH )$_{2}$ and NaOH as absorbents were used, then the ratio of denuclearization was 96 and 97% respectively and nitrification was recorded 29 and 25% . 3. In this absorption tests the optimum condition for ratio of liquid per gas, pH and nonregenerable salt concentration of circulation solution were 3.6ℓ /Nm$^{3}$, 6.0, 0.5∼1.0% respectively, 4. Initial COD in oxidation basin was 800 ∼ 1,00099ut after adjusting to pH 7.0, COD of effluent water was less than 20ppm.

• 방사선산업학회지
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• 제18권1호
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• pp.9-14
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• 2024

In order to thoroughly verify the denuclearization of the Korean Peninsula, it is urgent to develop technology capabilities to monitor, detect, collect, analyze, interpret, and evaluate nuclear activities using nuclear materials and secure nuclear transparency. The IAEA is actively using seal technology to maximize the efficiency of safety measures, and currently uses metal cap, paper, COBRA, and EOSS as seal devices. Unlike facilities that comply with safety measures requirements, such as domestic nuclear facilities, facilities subject to denuclearization are likely to have various risk environments that make it difficult to apply safety measures, and there is a high possibility that continuity of knowledge (COK) such as damage, malfunction, and power loss will not be maintained. This study aims to develop a real-time active seal device that can be applied in such special situations to enable immediate response in the event of a similar situation. To this end, the main functions of the real-time seal device were derived and applied, and a commercialized seal device and operation software. The real-time seal technology developed through this study can be applied to all nuclear facilities in South Korea, especially used as storage equipment for dry cask storage facilities of heavy water reactor's after fuel, and it is believed that unnecessary radiation exposure by inspectors can be minimized.

• 융합보안논문지
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• 제19권1호
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• pp.135-144
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• 2019

최근에 북한의 김정은 정권은 핵무력 완성을 선언한 가운데, 국제사회와 대한민국을 향해 북한 핵의 완전한 폐기로 한반도 비핵화를 추진하겠다며 한국과 미국 행정부를 상대로 정상회담을 하고 있다. 북한의 김정은은 완전한 비핵화를 선언하고 있지만, 우리가 추구하는 진정한 한반도 비핵화를 완성하기 위해서는 보다 실질적인 준비와 대비가 필요하다. 현대 국제사회에서는 약육강식의 논리가 정확히 적용된다. 준비되지 않은 국가가 상대방의 선의만 믿고 실질적인 대비를 하지 않으면, 그 국가는 역사 속에 존재할 수 없다. 따라서 우리가 현시점에서 준비해야 할 최우선 과제는 북한이 보유한 대량살상무기의 실체에 대하여 완벽한 정보를 확보하고 관리하는 것이다. 특히나 북한이 보유한 대량살상무기는 그 피해의 치명성으로 인하여 조기에 파악하고 이에 대한 대비가 필수적이다. 따라서 본 연구는 우리 국민과 국가 생존에 직결되는 위중한 사안(事案)인 북한 대량살상무기 위협에 대한 정확한 정보획득을 위해 현대화된 기술정보의 본질적인 한계를 보완하기 하면서, 대량살상무기를 유형별로 구분하여 이에 대한 인간 정보 운용방안을 구체화하였다.

• 융합보안논문지
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• 제18권2호
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• pp.89-99
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• 2018

2018년은 한반도 평화정착을 위한 중대한 전환점에 서있다. 금년 4~6월에 남한 미국-북한간 정상회담을 기점으로, 북한 핵과 미사일의 '완전하고, 검증가능하며, 불가역적인 폐기(CVID)'를 위한 험난한 여정이 시작되었다. 한국에 있어 '북핵의 CVID'만이 평화를 위한 최소한의 조건(하한선) 이지만, 북한+중국+러시아 등에게 '북핵의 CVID' 달성은 그들의 정치 군사적 위상을 크게 축소시킨다고 인식할 가능성이 크다. 따라서 남북-미북 정상 간에 북한 핵을 비핵화한다고 합의하더라고 그 실천과정에서 많은 난관이 예상된다. 중국에 있어서 북한의 존재는 단순히 국제적인 문제를 일으키는 하나의 국가가 아니라 정치적으로도 동북아에서 패권경쟁을 하는 미국과의 관계에서 매우 중요한 레버리지를 제공하는 전략적 가치가 있는 국가이다. 북한은 미국으로 하여금 중국에게 자꾸 뭔가를 부탁하지 않으면 안 되게 만드는 존재이다. 이에 급부상하고 있는 중국의 강압적인 패권행사를 거부하고, 비핵화 합의에 대한 이행과정에서의 불확실성을 해소하여 '북핵의 CVID'달성을 위한 차선의 대안으로써 '한일 안보협력'의 필요성을 제시하였다.

• 국제지역연구
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• 제13권4호
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• pp.3-22
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• 2010

본 연구의 목적은 제2차 북한의 핵 위기 특히 2006년 10월 북한의 핵실험 이후 중국의 대북 정책이 왜 압박과 유인 정책간의 혼선을 보이고 있는지를 분석하는데 있다. 본 연구는 혼선을 보이고 있는 중국의 대북 정책의 근본적인 원인이 북한에 대해 중국이 갖고 있는 두 가지 목표 즉 한반도와 동북아시아의 안정 그리고 한반도의 비핵화간에 존재하는 딜레마로 인한 것이라고 주장한다. 북한이 핵개발 의도를 가시화하고 중국 역시 자국 안보의 위협으로 중재자의 역할을 자처하게 되면서 북한에 대한 중국의 목표는 상호 모순적인 상황에 처하게 되었다. 중국이 북한에 대해 갖고 있는 두 가지 목표는 1978년 개혁개방 이후부터 중국의 기본노선인 '경제발전'을 이룩하기 위해 추구해온 주변 지역 안정과 직결되기 때문에 중국의 대북 목표 전환은 그리 쉽지 않다. 따라서 북한이 비핵화에 대한 노력을 기울이지 않고 중국이 북한에 대해 한반도 평화와 비핵화라는 두 가지 목표를 지속한다면, 북한에 대한 중국 정책의 혼선은 앞으로도 지속될 것으로 전망할 수 있다.

• International Journal of Advanced Culture Technology
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• 제12권2호
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• pp.281-285
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• 2024

Within five years of Kim Jong-un's rise to power, North Korea conducted four nuclear tests and launched the Hwasong-15, an intercontinental ballistic missile (ICBM), in 2017, declaring the completion of its nuclear forces. During the period when Kim Jong-un completed nuclear forces to maintain the regime, foreign policy factors of the United States, China, Russia, and South Korea drove North Korea's accelerated nuclear development. The main motivating factors were the hostile policies and external threats as security factors. The completion of nuclear forces is also the result of the interplay of domestic political factors, normative factors, and hereditary factors. North Korea has been developing nuclear weapons and missiles for the survival of its regime. To achieve lasting peace on the Korean Peninsula, a new modus vivendi must be sought. It is necessary to set the ultimate goal of North Korea's complete denuclearization and engage in strategic thinking for a realistic and effective phased approach.

• Strategy21
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• 통권39호
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• pp.5-46
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• 2016

North Korea's 4th nuclear test on Jan. 6 and following developments once again awakened the world into seriousness of the nuclear matters on the Korean peninsula. On March 2, UNSC adopted Resolution 2270 which is complemented by Seoul government's measures such as withdrawal from the Gaesung Industrial Complex (Feb. 9) and announcement of unilateral sanction (March 8). Seoul government also strongly urged the international community to strangle North Korea's 'financial resources.' The U.S., Japan, China, and other countries have issued unilateral sanctions to complement the UNSC measure. South Korea and the U.S. conducted their annual joint military drill (Resolve-Foal Eagle) in the largest-ever scale. North Korea, however, responded with demonstration of its nuclear capabilities and announcement of de facto 'nuclear-first' politics. North Korea test-fired a variety of delivery vehicles, threatened nuclear strikes against South Korea and the U.S., and declared itself as an 'invincible nuclear power armed with hydrogen bombs' at the 7th Workers 'Party Congress held in May, 2016. Considering the circumstantial evidences, the North's 4th nuclear test may have been a successful boosted fission bomb test. North Korea, and, if allowed to go on with its nuclear programs, will become a nuclear power armed with more than 50 nuclear weapons including hydrogen bombs. The North is already conducting nuclear blackmail strategy towards South Korea, and must be developing 'nuclear use' strategies. Accordingly, the most pressing challenge for the international community is to bring the North to 'real dialogue for denuclearization through powerful and consistent sanctions. Of course, China's cooperation is the key to success. In this situation, South Korea has urgent challenges on diplomacy and security fronts. A diplomatic challenge is how to lead China, which had shown dual attitudes between 'pressure and connivance' towards the North's nuclear matters pursuant to its military relations with the U.S, to participate in the sanctions consistently. A military one is how to offset the 'nuclear shadow effects' engendered by the North's nuclear blackmail and prevent its purposeful and non-purposeful use of nuclear weapons. Though South Korea's Ministry of Defense is currently spending a large portion of defense finance on preemption (kill-chain) and missile defense, they pose 'high cost and low efficiency' problems. For a 'low cost and high efficiency' of deterrence, South Korea needs to switch to a 'retaliation-centered' deterrence strategy. Though South Korea's response to the North's nuclear threat can theoretically be boiled down into dialogue, sanction and deterrence, now is the time to concentrate on strong sanction and determined deterrence since they are an inevitable mandatory course to destroy the North' nuclear-first delusion and bring it to a 'real denuclearization dialogue.'

• 한국과 국제사회
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• 제3권2호
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• pp.87-130
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• 2019

본 논문은 최근 남북한 군비통제의 추진현황과 과제를 분석하기 위한 것이다. 이를 위해 군비통제의 이론적 개요, 최근 남북한 군비통제의 추진현황, 한반도 군비통제의 제약요인과 과제를 살펴본 후 결론을 도출해 본 것이다. 21세기 한민족의 공존공영을 위한 평화구조 정착을 위해 무엇보다 중요한 과제중의 하나는 첨예한 군사적 대결상태와 상호위협을 해소하기 위한 군비통제의 실현이라 할 수 있다. 2018년 평창동계올림픽을 계기로 한반도 평화와 비핵화를 위한 남북 북미정상회담과 후속회담을 통해 남북한 신뢰구축과 군비통제의 여건이 조성되어 가고 있다. 4.27 판문점선언과 '판문점선언 이행을 위한 군사적 합의' 등을 통해 남북한간의 군사적 신뢰구축 및 운용적 군비통제가 이루어지고 있다. 하지만 남북한의 적대감 불신감의 잔존, 남북한과 주변국과의 방위조약, 주변국의 군비경쟁과 한반도에 대한 복잡한 이해관계 등의 군비통제의 제약요인(制約要因)이 존재하는바, 남북한의 군비통제에 대한 공감대의 형성과 신뢰구축이 중요하다고 할 수 있다. 우리는 장기적인 통일안보의 비전을 가지고 가능한 것부터 점진적이면서도 신중하게 한반도 대내외 역학관계의 국제적 군비통제의 추세를 고려하여 남북한간의 군비통제문제를 해결해 나가야 할 것이다,

• Journal of Radiation Protection and Research
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• 제42권4호
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• pp.222-228
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• 2017

Background: On June 18, 2017, Korea's first commercial nuclear reactor, the Kori Nuclear Power Plant No. 1, was permanently suspended, and the capacity of nuclear power generation facilities will be adjusted according to the governments denuclearization policy. In these circumstances, it is necessary to assess the quality of radiation safety management in nuclear power plants in Korea by evaluating the radiation dose associated with them. Materials and Methods: The average annual radiation dose per unit, the annual radiation dose per person, and the annual dose distribution were analyzed using the radiation dose database of nuclear reactors for the last 5 years. The results of our analysis were compared to the specifications of the Nuclear Safety Act and Medical Law in Korea. Results and Discussion: The annual average per unit radiation dose of global major nuclear power generation was 720 man-mSv, while that of Korea's nuclear power plants was 374 manmSv. No workers exceeded 50 mSv per year or 100 mSv in 5 years. The individual radiation dose according to occupational exposure was 0.59 mSv for nuclear workers, 1.77 mSv for non-destructive workers, and 0.8 mSv for diagnostic radiologists. Conclusion: The radiation safety management of nuclear power plants in Korea has achieved the best outcomes worldwide, which is considered to be the result of the as-low-as-reasonably-achievable (ALARA) approach and strict radiation safety management. Moreover, the occupational exposures were also very low.

• 무역학회지
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• 제44권6호
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• pp.327-344
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• 2019

This paper explores the hub-and-spoke system as the structure of the global economic network that presents obstacles for international cooperation. With its exclusive jurisdiction and control over the hub, a powerful state can employ coercive economic measures to compel and deter unwanted behavior of rogue states and even its allies. Against this backdrop, this study analyzes the cases of the US blocking access to its market by Chinese Huawei as well as the case of Japan in restricting trade for highly advanced goods to South Korea. This analysis reveals that both measures are forms of secondary boycotts, which affect not only the entities within their jurisdiction but also others located in third countries. In addition, this paper extends its findings to free trade agreements and offers implications on the outward processing scheme for the Gaeseong Industrial Complex in the KORUS FTA and the Korea-China FTA. These events result in a gray-risk for South Korea, a country that aims to resolve North Korea's denuclearization and inter-Korean economic cooperation.