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[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] 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] 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] The approach used in the United States for license renewal (plant operation to 60 years) and subsequent license renewal (plant operation to 80 years) is implemented within a structured regulatory framework that includes regulatory process ''essential elements'' which are integrated to ensure continued safe plant operation. This integrated approach was evaluated by an International Atomic Energy Agency (IAEA) Integrated Regulatory Review Service mission in 2010, in part using the IAEA Periodic Safety Review for comparison. This mission identified only one suggestion related to license renewal: the NRC should incorporate lessons learned from Periodic Safety Reviews performed in other countries as an input to the NRC’s assessment processes. For international regulatory frameworks that do not include these regulatory process ''essential elements'' or similar provisions, use of the license renewal approach followed in the United States may necessitate enhancement of the framework to include activities which achieve similar objectives, in order to ensure continued safe long term plant operation. (author)
[en] This paper will demonstrate the long-term economic and environmental benefits of extending the operation of the U.S.’s nuclear reactors to 80 years , and will provide perspective from those U.S. utilities that intend to pursue second license renewal (SLR.) While nuclear power plants require significant capital investment, they are the largest and most reliable emission-free source of electricity. Federal law and regulations governing the safety of U.S. nuclear reactors allow for extensions of the initial 40-year operating license in 20-year increments, putting the current operating lifetime of a U.S. nuclear power plant at 60 years. Extending the life of operating reactors in the U.S. through SLR makes economic and environmental sense for consumers, communities and the utilities that operate these facilities. America’s evolving electricity marketplace is faced with growing requirements for baseload reliability and mandates for low-carbon electricity production, placing a high premium on preserving existing nuclear generating capacity and ensuring nuclear energy maintains its current 20 percent share of U.S. electricity supply. In 2013, electricity production from U.S. nuclear power plants was about 790 billion kilowatt-hours and nearly 20 percent of America’s electricity supply. Over the past 20 years, America’s nuclear power plants have increased output and improved performance significantly. Since 1990, the nuclear industry has increased total output equivalent to that of 26 large power plants, when in fact only five new nuclear power plants have been brought on line. But by 2030, the U.S. could experience electricity shortages if a significant number of nuclear plants are retired. By 2040, half of the U.S.’s nuclear power plants will have been operating for 60 years. Electrical utilities in the U.S. must begin planning either to continue operating these plants or to develop new sources of electric generation and decommission the reactors. (author)
[en] China National Nuclear Safety Administration (NNSA) promulgated the ''The technical policy of nuclear power plant operational license valid period extension (Trial)'' at the end of 2015. This technical policy is based on the investigation and study of the international practices of safety requirements and technical standards for long-term safe and stable operation of nuclear power plants, with combination of the practices of nuclear power operation and safety supervision in China. In general, China's nuclear power plant operation license extension (OLE) will be carried out with reference to the license renewal (LR) system approach whose technical route and safety requirements and standards developed by the US-NRC, taking into account China's nuclear power industry has long been in accordance with IAEA safety guideline for the implementation of nuclear power plant periodic safety review (PSR). Therefore, the owner should conduct a comprehensive aging management review (AMR) for nuclear power plant during the application process of the OLE of the nuclear power plant, and carry out rigorous analysis of international general and/or power plant specific time-limited aging analysis (TLAA) items to prove that the nuclear power plant can continue to operate safely for a certain period of time exceeding its design lifetime, such as 20 years.