• Title/Summary/Keyword: Disposal

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Analysis of the Disposal Tunnel Spacing and Disposal Pit Pitch for the HLW Repository Design (심지층 처분시설 설계를 위한 처분터널 및 처분공 간격 분석)

  • 이종열;김성기;김진웅;최종원;한필수
    • Proceedings of the Korean Radioactive Waste Society Conference
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    • pp.315-321
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    • 2003
  • In this study, analysis of the disposal tunnel spacing and disposal pit pitch was carried out, as a factor of the design to estimate the scale and layout of the repository To do this, based on the reference repository concept and the engineered barrier concept, the cross section of the disposal tunnel and disposal pit are established and the mechanical and thermal stabilities of the tunnels are analyzed. Also, the optimized disposal tunnel spacing and the disposal pit pitch which minimize the excavation volume was proposed. The detailed analyses by the exact site characteristics data are needed to reduce the uncertainty of the site in the future.

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WOLSONG LOW- AND INTERMEDIATE-LEVEL RADIOACTIVE WASTE DISPOSAL CENTER: PROGRESS AND CHALLENGES

  • Park, Jin-Beak;Jung, Hae-Ryong;Lee, Eun-Young;Kim, Chang-Lak;Kim, Geon-Young;Kim, Kyung-Su;Koh, Yong-Kwon;Park, Kyung-Woo;Cheong, Jae-Hak;Jeong, Chan-Woo;Choi, Jong-Soo;Kim, Kyung-Deok
    • Nuclear Engineering and Technology
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    • v.41 no.4
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    • pp.477-492
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    • 2009
  • In this paper, we discuss the experiences during the preparation of the Wolsong Low- and Intermediate-Level Radioactive Waste Disposal Center. These experiences have importance as a first implementation for the national LILW disposal facility in the Republic of Korea. As for the progress, it relates to the area of selected disposal site, the disposal site characteristics, waste characteristics of the disposal facility, safety assessment, and licensing process. During these experiences, we also discuss the necessity for new organization and change for a radioactive waste management system. Further effort for the safe management of radioactive waste needs to be pursued.

A Case Study for Site Selection of the Waste Treatment Facilities (폐기물처리시설 입지선정에 따른 사례연구)

  • 이해승
    • Journal of environmental and Sanitary engineering
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    • v.19 no.1
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    • pp.24-36
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    • 2004
  • This study is to investigate the present condition of waste disposal establishment and to analysis problems which could be produced at location selection formalities of waste disposal establishment. It proposed building methods of waste disposal establishment to lead spontaneous participation of local resident according to case analysis of waste disposal establishment. There are research results; i) Opposition of inhabitants was the majority of reason at the business abandonment or delay of waste disposal establishment. Therefore agreement formation course with local inhabitants is most important position. ii) Many estimate have been needed for waste disposal establishment, but support estimate of government was 30-50% that is really low compare with other environmental establishment. So that it need to increase of government estimate. iii) Location collection is carried out based on law and final collected location must be executed without delay of relation business as soon as possible. iv) Standard of location collection has to divide into small, middle and large size and to apply with same rule according to divided location. v) It must be change public subscription before and location selection after and maintain continuance of information offer to local inhabitants and offered information. vi) after building of waste disposal establishment for solving distrust of waste disposal establishment. It must be planed and carried on useful support countermeasure to local inhabitants in actuality.

A Study of School Waste Disposal Status and Its Reforms (Public Primary and Secondary Schools in Seoul) (학교 쓰레기 처리현황과 개선에 관한 연구 - 서울시 공립 초.중등학교를 대상으로 -)

  • 노성빈
    • Hwankyungkyoyuk
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    • v.3 no.1
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    • pp.130-140
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    • 1992
  • The purpose of this study was to survey the trends of waste products in schools, its gathering and disposal, identification of problems and to analyze its disposal. Moreover, this study was aimed at basic suggestions about the establishment and plans of waste environmental education. 98 public primary and secondary schools were surveyed in Seoul during the month of March and April, 1991. Information was collected from each educational association by random sampling. Questionaries were used for this survey. To understand the disposal status of school waste and its reforms, this study surveyed the amount of waste by products, their origin and analyzed the disposal by type, one number of schools and teachers involved. The dump sited and disposal methods of school waste, its problems, and the status of school waste educations were researched, and ideal disposal methods and plans for waste education were suggested. The results were as follows. 1. The School's trash was produced by followings: paper, vinyle plastics, food, woods, metals, ceramics, glass, bottles, and ash from the heating system. The biggest cause of the school's waste as shown by the survey was a lack of environmental awareness(39.8%). The second biggest was the use of a one time use of disposable paper products(27.6%). 2. Waste collection by different grade levels were proven to be important but as you move from elementary to high school, the waste collecting operation decreased, in this connection between the students and waste collection itself it was significant on the other hand the teachers were not working as significant variables. 3. Of the school that collected waste 69.5 percent of the schools separately grouped common waste and recyclable waste. 25 schools(42.4%) received improvement on their environmental awareness of trash collection through this method. 4. From the number of disposal sites in surveyed schools, it was determined that the education of the necessity for separation of waste was performed in vain and accordingly the should require a real education in the future. 5. Regarding the method of disposal of waste the survey indicated that the #1 method of disposal was partial burning and the remains carried to a dump site by others(35,7%). In elementary schools the entire waste was taken by individuals to a dump site (33.3%). In high schools partial burning and then transported by individuals #1 in our survey(50%). 6. Relative to the problem of the treatment to waste, the emission of smoke from the burning was considered to be the #1 priority in our survey (62.3%) the problem of trash collection being delayed was 52.1%(1in our survey). 7. The present situation of environmental education of waste us lacking. Under present circumstances, the practice of public announcements for improvement and waste-paper collection has been going on vigorously but lacking in education as to the preparation of compositions for students the themes of public exhibitions, the organizing of voluntary associations should be part of the education system to reinforce student's awareness of proper waste disposal. 8. The most economical alternative for disposal was recycling usable waste or combustible material through a variety of education we can therefore educate students bring this education to their homes public servants will also be able to benefit in the waste disposal process with proper education. In conclusion we should intensify the systemical organization and the education of our waste disposal for a better environment.

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Confidence Improvement of Disposal Safety by Development of a Safety Case for High-Level Radioactive Waste Disposal (고준위방사성폐기물 처분 Safety Case 개발을 통한 처분안전성 신뢰도 향상)

  • Baik, Min Hoon;Ko, Nak-Youl;Jeong, Jongtae;Kim, Kyung-Su
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.14 no.4
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    • pp.367-384
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    • 2016
  • Many countries have developed a safety case suitable to their own countries in order to improve the confidence of disposal safety in deep geological disposal of high-level radioactive waste as well as to develop a disposal program and obtain its license. This study introduces and summarizes the meaning, necessity, and development process of the safety case for radioactive waste disposal. The disposal safety is also discussed in various aspects of the safety case. In addition, the status of safety case development in the foreign countries is briefly introduced for Switzerland, Japan, the United States of America, Sweden, and Finland. The strategy for the safety case development that is being developed by KAERI is also briefly introduced. Based on the safety case, we analyze the efforts necessary to improve confidence in disposal safety for high-level radioactive waste. Considering domestic situations, we propose and discuss some implementing methods for the improvement of disposal safety, such as construction of a reliable information database, understanding of processes related to safety, reduction of uncertainties in safety assessment, communication with stakeholders, and ensuring justice and transparency. This study will contribute to the understanding of the safety case for deep geological disposal and to improving confidence in disposal safety through the development of the safety case in Korea for the disposal of high-level radioactive waste.

The Influences of Adolescent′s Environmental Education Experience and Peer Group on Pro-environmental Consumption Behavior (청소년의 환경교육경험과 또래집단이 환경친화적 소비행동에 미치는 영향)

  • Jang Yoon Ok;Park Sue Kyung
    • Journal of the Korean Home Economics Association
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    • v.42 no.11
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    • pp.151-165
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    • 2004
  • The purpose of this study was to investigate the influence of adolescent's environmental education experience and peer group on pro-environmental consumption behavior The survey study administered 610 questionnaires to general high school students in Daegu. The main findings of this study were as follows. First, adolescent's pro-environmental purchase behavior was positively correlated to the degree of participation in environment-related events in school, the mother's pro-environmental purchase, use and disposal behavior and environment education experience in society, while the peer group's pro-environmental purchase was positively correlated to use and disposal behavior Also adolescent's pro-environmental use behavior was positively correlated to the mother's pro-environmental purchase, use and disposal behavior, the peer group's pro-environmental purchase, and use and disposal behavior. Adolescent's pro-environmental disposal behavior was positively correlated to the degree of participation in environment-related events in school, the mother's pro-environmental purchase, use and disposal behavior, environment education experience in society, the peer group's pro-environmental purchase, and use and disposal behavior. Second, adolescent's pro-environmental purchase behavior was influenced to the greatest extent by the peer group's pro-environmental purchase behavior, followed by the mother's pro-environmental purchase behavior and use behavior, and to a lesser extent, tv environment education experience in society. Also adolescent's pro-environmental use behavior was influenced to the greatest extent tv the mother's pro-environmental use behavior, followed by the peer group's one, and to a lesser extent, by the mother's pro-environmental disposal behavior. Adolescent's pro-environmental disposal behavior was influenced to the greatest extent by the mother's pro-environmental disposal behavior, followed tv the peer group's one, the mother's pro-environmental purchase behavior and, to a lesser extent, by the degree of participation in environment-related events in school.

The State-of-the Art of the Borehole Disposal Concept for High Level Radioactive Waste (고준위방사성폐기물의 시추공 처분 개념 연구 현황)

  • Ji, Sung-Hoon;Koh, Yong-Kwon;Choi, Jong-Won
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.10 no.1
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    • pp.55-62
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    • 2012
  • As an alternative of the high-level radioactive waste disposal in the subsurface repository, a deep borehole disposal is reviewed by several nuclear advanced countries. In this study, the state of the art on the borehole disposal researches was reviewed, and the possibility of borehole disposal in Korean peninsula was discussed. In the deep borehole disposal concept radioactive waste is disposed at the section of 3 - 5km depth in a deep borehole, and it has known that it has advantages in performance and cost due to the layered structure of deep groundwater and small surface disposal facility. The results show that it is necessary to acquisite data on deep geologic conditions of Korean peninsula, and to research the engineering barrier system, numerical modeling tools and disposal techniques for deep borehole disposal.

A Study constructing a Function-Based Records Classification System for Korean Individual Church (한국 개(個)교회기록물의 기능분류 방안)

  • Ma, Won-jun
    • The Korean Journal of Archival Studies
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    • no.10
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    • pp.145-194
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    • 2004
  • Church archives are the evidential instruments to remember church activity and important information aggregate which has administrative, legal, financial, historical, faithful value as the collective memory of church community. So it must be managed necessarily and the management orders are based on the Bible. The western churches which have a correct understanding about the importance of church records and management order have taken multilateral endeavor to create, manage church archives systematically. On the other hand, korean churches don't have the records management systems. Therefore, Records created in individual church are mostly managed unsystematically and exist as 'backlogs', finally, they are destructed without reasonable formalities. In those problems, the purpose of this study is to offer the way of records classification and disposition instrument with recognition that records management should be done from the time of creation or previous to it. As a concrete device for them, I tried to embody the function-based classification method and disposal schedule. I prefer the function-based classification and disposal schedule to the organization and function-based classification to present stable classification and disposal schedule, as we can say the best feature of the modern organization is multilateral and also churches have same aspect. For this study, I applied DIRKS(Designing and Implementing Recordkeeping Systems) manual which National Archives of Australia provide and guidelines in ICA/IRMT series to construct the theory of the function-based classification in individual churches. Through them, it was possible to present a model for preliminary investigation, analysis of business activity, records survey, disposal schedule. And I took an example of 'Myong Sung Presbyterian Church' which belong to 'The Presbyterian church in Korea'. I explained in detail codifying process and results of preliminary investigation in 'Myong Sung Presbyterian Church', analysis of business activity based on it, process of presenting the function-based classification and disposal schedule got from all those steps. For establishing disposal schedule, I planned 'General Disposal Schedule' and 'Agency Disposal Schedule' which categorized 'general function' and 'agency function' of an agency, according to DIRKS in Australia and ICA/IRMT. And for estimation of disposal date I had a thorough grasp of important records category presented in 'Constitution of General Assembly', interview to know the importance of tasks, and added examples of disposal schedule in western church archives. This study has significance that it was intended to embody 'the function-based classification' and 'disposal schedule' suitable for individual church, applying DIRKS in Australia and ICA/IRMT on absence of the theory or example which tried to present the function-based classification and disposal schedule for individual church. Also it is meaningful to present a model that can classify and disposal real records according to the function in individual church which has no recognition or way about records management.

Fuzzy ART Neural Network-based Approach to Recycling Cell Formation of Disposal Products (Fuzzy ART 신경망 기반 폐제품의 리싸이클링 셀 형성)

  • 서광규
    • Journal of the Korea Safety Management & Science
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    • v.6 no.2
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    • pp.187-197
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    • 2004
  • The recycling cell formation problem means that disposal products are classified into recycling product families using group technology in their end-of-life phase. Disposal products have the uncertainties of product condition usage influences. Recycling cells are formed considering design, process and usage attributes. In this paper, a new approach for the design of cellular recycling system is proposed, which deals with the recycling cell formation and assignment of identical products concurrently. Fuzzy ART neural networks are applied to describe the condition of disposal product with the membership functions and to make recycling cell formation. The approach leads to cluster materials, components, and subassemblies for reuse or recycling and can evaluate the value at each cell of disposal products. Disposal refrigerators are shown as an example.