[en] For most of the world's nuclear power plants decommissioning is still but a distant threat. According to IAEA statistics, most of the world's operating nuclear power plants are still under 20 years of age, the average being little more than ten years. However 55 power plants have already been permanently shut down. A large number of early research and demonstration facilities and various military plants are already at some stage of decommissioning or at least awaiting decisions to that end. So decommissioning is already a current issue. The diversity of situations in various countries was clearly illustrated at the three-day international seminar jointly organized by the OECD Nuclear Energy Agency (NEA) and the IAEA which was held in Paris on 2-4 October 1991. Although mainly devoted to decommissioning policies, it gave a fresh view of the status of the whole field. (author)

[en] This bibliography contains information on decontamination and decommissioning added to the Department of Energy's Energy Data Base from November 1982 through December 1983. The abstracts are grouped by subject category. Entries in the subject index also facilitate access by subject, e.g., Fuel Reprocessing Plants/Decontamination. Within each category the arrangement is by report number for reports, followed by nonreports in reverse chronological order. These citations are to research reports, journal articles, books, patents, these, and conference papers from worldwide sources. Five indexes, each preceded by a brief description, are provided: Corporate Author, Personal Author, Subject, Contract Number, and Report Number

[en] This conference proceedings contains 64 papers. Thirty-eight papers are indexed separately. Topics covered include: power plant decontamination; decontamination and decommissioning of fuel cycle and research facilities; and, economic aspects of power reactor decommissioning

[en] The most important decommissioning problems are described in this paper and facility design recommendations applicable to the specific problem follow the description. These specific problems are: Decontamination of Concrete Surfaces, (2) Disposal of Massive Concrete Structures, (3) Disposal of Reactor Vessels, (4) Disposal of Waste Holdup Tanks, (5) Removal of Process Equipment, (6) Disposal of Handling Machines, (7) Sodium Coolant Disposal, (8) Disposal of Insulation, (9) Decontamination of Facility Structures, and (10) Contamination Assessment

[en] The Surplus Facilities Management Program has implemented three distinct decommissioning options: Safe Storage; Entombment; and Dismantlement. Some facilities have undergone a combination of these options during their decommissioning. Examples are given of each of the three options

[en] A Nordic workshop on decommissioning of nuclear facilities was held at Risoe in Denmark September 13-15, 2005. The workshop was arranged by NKS in cooperation with the company Danish Decommissioning, DD, responsible for decommissioning of nuclear facilities at Risoe. Oral presentations were made within the following areas: International and national recommendations and requirements concerning decommissioning of nuclear facilities Authority experiences of decommissioning cases Decommissioning of nuclear facilities in Denmark Decommissioning of nuclear facilities in Sweden Plans for decommissioning of nuclear facilities in Norway Plans for decommissioning of nuclear facilities in Finland Decommissioning of nuclear facilities in German and the UK Decommissioning of nuclear facilities in the former Soviet Union Results from research and development A list with proposals for future work within NKS has been prepared based on results from group-work and discussions. The list contains strategic, economical and political issues, technical issues and issues regarding competence and communication. (au)

[en] This is a study of the effects on the costs of decommissioning nuclear reactors and fuel cycle facilities caused by changes in the economic environment, changes in the accuracy of facility use planning, and the use of various options for funding decommissioning. The results of this study are applicable to the decommissioning of any facility. 3 refs

[en] Full text of publication follows. The decommissioning of a Basic Nuclear Installation (BNI) is a lengthy and complex operation involving risks. To date, about thirty BNIs of all types have been shut down or are undergoing decommissioning in France. In order to clarify the regulations on decommissioning and waste management, updated by the Ordinance of February 2016, ASN develop new guides in these fields as well as in the field of BNI contaminated sites and soils. Concrete implementation of the legal framework: The ASN guides was created as an educational tool for professionals. They detail the recommendations, propose methods for achieving the objectives set in the texts and present methods and best practices stemming from experience feedback from significant events. In order to clarify the regulations on de-commissioning and waste management ASN continued to develop new guides in these fields. Namely 2 guides were updated. In 2016, ASN updated and published the new version of guide Nr. 6 concerning final shutdown, decommissioning and de-licensing of BNIs. It indicates the possibility of carrying out decommissioning preparatory operations after the final shutdown (waste evacuation, radioactivity reduction operation). These preparatory operations were especially implemented by the BNIs Nr. 40, 72 and 93. They allowed a decrease in the nuclear risks. The new version of Guide Nr. 14 relative to the post-operational clean-out of the structures in BNIs explains the notions of complete clean-out based on 3 lines of defence. In the event that, depending on the characteristics of the contamination or pollution, this approach would pose difficulties of implementation, the ASN considers that the operator must go as far as reasonably possible in the process of remediation. It must justify, from a technical or economic point of view, that the reference process defined by the ASN cannot be implemented in its entirety, and that the remediation operations cannot go further with the methods, remediation and decommissioning techniques available under acceptable economic conditions. These provisions allow a reduction of nuclear waste production as it was the case during the BNI Nr. 18 decommissioning. (authors)

No abstract available

[en] Decommissioning is being planned or has already taken place for a broad range of nuclear facilities worldwide, including nuclear power plants, research reactors, nuclear fuel cycle facilities, research laboratories and industrial facilities, and it is expected that the number of facilities permanently ceasing operations will increase in the next few decades. Ensuring safety during decommissioning is a regulatory requirement, and adequate planning, evaluation and demonstration of safety for decommissioning activities are necessary to meet this requirement. It has been recognized that it would be desirable for a harmonized approach to be developed taking into account international experience and lessons learned. In view of this, a new International project was initiated by the International Atomic Energy Agency on evaluation and demonstration of safety of decommissioning of nuclear facilities (DeSa). It aims at drawing on international experience in order to develop a harmonized approach for evaluating the safety of decommissioning activities and reviewing safety assessments for these activities for all types of nuclear facilities (e.g. nuclear power plants, research reactors, nuclear fuel cycle facilities, research laboratories, industrial plants). The DeSa project commenced last year and this paper will describe the outcomes and progress of the project to date. (author)