Results 1 - 10 of 10533
Results 1 - 10 of 10533. Search took: 0.03 seconds
|Sort by: date | relevance|
[en] The Jordan Research and Training Reactor (JRTR) is Jordan’s first critical nuclear facility, owned and operated by the Jordan Atomic Energy Commission (JAEC). The reactor was successfully commissioned in 2016, has obtained its operating license from Jordan’s nuclear regulatory body, and is currently working on optimizing and extending its operation and utilization activities. In this work, prospects of utilizing the JRTR are presented by describing potential utilization applications suitable for the JRTR and of interest to its stakeholders, and afterward, challenges on the way of realizing and implementing those applications are discussed. (author)
[en] Challenge: Plant Economics: NPPs facing increased economic pressure leading to plant closures long before expiration of operating license (US) or potential plant life. E.g. recent & planed plant closures in US, in particular of single unit site NPPs of medium power range (< 600 MWe ) in unregulated. Also in Europe plant closures due to bad economics, e.g. Oskarsham 1 & 2 , Ringhals 1 & 2 (planed for 2020 2019), Muehleberg (planed for 2019).
[en] Summary: Considerations for safe Long Term Operation: • Extent to which the plant conforms to modern standards and practices; • Extent to which the (updated) licensing basis will remain valid; • Adequacy of arrangements to maintain plant safety; • Improvements to be implemented to resolve safety issues, including reasonably practicable modifications
[en] Nuclear power has safely, reliably, and economically contributed approximately 20% of the total electricity generated in the United States over the past two decades. High capacity factors and low operating costs make nuclear power plants some of the most economical power generators available. Further, nuclear power remains the single largest contributor (more than 60%) of non-greenhouse-gas-emitting electric power generation in the United States. The majority of commercial nuclear power plants in the United States have received a renewed operating license from the U.S. Nuclear Regulatory Commission (NRC), permitting those plants to operate up to 60 years. Further, the regulatory process permits licensees to seek approval from the NRC on extended nuclear power plant operations beyond 60 years. However, the NRC will require nuclear power plants that choose to apply for a second renewal of their operating license to demonstrate that adequate design and operational safety margins will be maintained over the extended operations period. In 2010, DOE’s Office of Nuclear Energy (DOE-NE) organized its research and development (R&D) activities in accordance with four objectives that ensure nuclear energy remains a compelling and viable energy option for the United States. Objective 1 focuses on developing the technologies and other solutions that can improve reliability, sustain safety, and extend the life of the current fleet of commercial nuclear power plants. The Light Water Reactor Sustainability (LWRS) Program is the primary programmatic activity that addresses Objective 1. The LWRS Program is focused on the following three goals: Developing the fundamental scientific basis to understand, predict, and measure changes in materials and systems, structures and components (SSCs) as they age in environments associated with continued long-term operations of the existing nuclear power plants, Applying this fundamental knowledge to develop and demonstrate methods and technologies that support safe and economical long-term operation of existing nuclear power plants, and Researching new technologies to address enhanced nuclear power plant performance, economics, and safety.
[en] The Nuclear Law Bulletin is a unique international publication for both professionals and academics in the field of nuclear law. It provides readers with authoritative and comprehensive information on nuclear law developments. Published free online twice a year in both English and French, it features topical articles written by renowned legal experts, covers legislative developments worldwide and reports on relevant case law, bilateral and international agreements as well as regulatory activities of international organisations. Feature articles and studies in this issue include: 'Environmental impact assessments and long-term operation of nuclear power reactors: increasing importance of environmental protection in the European Union?', 'Forging a clear path for advanced reactor licensing in the United States: approaches to streamlining the NRC environmental review process' and 'Slovak legal system for ensuring feasible nuclear back-end system implementation'
[en] Open-Cycle Cooling Water (OCCW) System of Qinshan Nuclear Power Plant (QNPP) was designed to supply sea water as the cooling water for heat exchangers of component cooling water system and emergency diesel generator (EDG) cooling water system. The main ageing mechanism of OCCW components with the environment of sea water includes corrosion, erosion, bio-fouling, aggressive chemical attack and sediment deposition, which would induce blocking, protective liner failure, corrosion perforation, reduction of heat transfer capability and jeopardize the safety and economical operation of plant. In order to reduce the risk of ageing degradation in OCCW system during the period of extended operating, the paper identifies the potential ageing degradation mode for OCCW components in QNPP, analyzes the insufficiency of the previous management measure, and investigated the coping strategy for each ageing degradation. Finally, the ageing management improvements of OCCW components are provided that include biocide treatment, system flow testing, disassembling inspection for critical equipment and heat transfer capability monitoring for safety important heat exchanger. These improvements have been applied in QNPP and proved effective in managing the ageing degradation of OCCW system. (author)
[en] Outline: • Initial Licensing First 40 years of operation; • First License Renewal 40-60 years of operation; • Subsequent License Renewal 60-80 years of operation; • International Activities
[en] NRC PLiM Presentations: • Lessons Learned for License Renewal from 40 to 60 to 80 years • Keynote Speech KS 6 : Assuring Safety for Subsequent License Renewal • Session 6-3 : Applying the United States License Renewal Approach to an International Environment • Session 6-4 : Regulatory Research on the Aging Management of Structures, Systems and Components in Nuclear Power Plants Supporting License Renewal • Harvesting of Aged Materials from Operating and Decommissioning Nuclear Power Plants
[en] Outline: • About SÚJB and Czech Installations; • NPP Dukovany LTO background; • LTO Legislative framework; • Licencing process; • Issues of LTO process; • Welds and NDT; • Operating licence and licence conditions
[en] Contents: ALFRED, Implementation process; Development of Licensing Support and RDI Infrastructure; Pre licensing and licensing elements; Stakeholders' involvement; Other elements; Conclusions - ALFRED project: Long term project, Major investment, International environment; Complexity of the authorization process; Experimental facilities for RD&Q, V&V, T&D; Stepwise approach in operational strategy; Dialogue with stakeholders started from the beginning; Crucial importance of the competence building; FALCON resources and EU expertise.