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Author: D. Kimball
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A Spent Nuclear Fuel (SNF) Aging System is a crucial part of operations at the proposed Yucca Mountain repository in the United States. Incoming commercial SNF that does not meet thermal limits for emplacement will be aged on outdoor pads. U.S. Department of Energy SNF will also be managed using the Aging System. Proposed site-specific designs for the Aging System are closely based upon designs for existing dry cask storage (DCS) systems. This paper evaluates the applicability of existing DCS systems for use in the SNF Aging System at Yucca Mountain. The most important difference between existing DCS facilities and the Yucca Mountain facility is the required capacity. Existing DCS facilities typically have less than 50 casks. The current design for the aging pad at Yucca Mountain calls for a capacity of over 2,000 casks (20,000 MTHM) [1]. This unprecedented number of casks poses some unique problems. The response of DCS systems to off-normal and accident conditions needs to be re-evaluated for multiple storage casks. Dose calculations become more complicated, since doses from multiple or very long arrays of casks can dramatically increase the total boundary dose. For occupational doses, the geometry of the cask arrays and the order of loading casks must be carefully considered in order to meet ALARA goals during cask retrieval. Due to the large area of the aging pad, skyshine must also be included when calculating public and worker doses. The expected length of aging will also necessitate some design adjustments. Under 10 CFR 72.236, DCS systems are initially certified for a period of 20 years [2]. Although the Yucca Mountain facility is not intended to be a storage facility under 10 CFR 72, the operational life of the SNF Aging System is 50 years [1]. Any cask system selected for use in aging will have to be qualified to this design lifetime. These considerations are examined, and a summary is provided of the adaptations that must be made in order to use DCS technologies successfully at a geologic repository.
Author: D. Kimball
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A Spent Nuclear Fuel (SNF) Aging System is a crucial part of operations at the proposed Yucca Mountain repository in the United States. Incoming commercial SNF that does not meet thermal limits for emplacement will be aged on outdoor pads. U.S. Department of Energy SNF will also be managed using the Aging System. Proposed site-specific designs for the Aging System are closely based upon designs for existing dry cask storage (DCS) systems. This paper evaluates the applicability of existing DCS systems for use in the SNF Aging System at Yucca Mountain. The most important difference between existing DCS facilities and the Yucca Mountain facility is the required capacity. Existing DCS facilities typically have less than 50 casks. The current design for the aging pad at Yucca Mountain calls for a capacity of over 2,000 casks (20,000 MTHM) [1]. This unprecedented number of casks poses some unique problems. The response of DCS systems to off-normal and accident conditions needs to be re-evaluated for multiple storage casks. Dose calculations become more complicated, since doses from multiple or very long arrays of casks can dramatically increase the total boundary dose. For occupational doses, the geometry of the cask arrays and the order of loading casks must be carefully considered in order to meet ALARA goals during cask retrieval. Due to the large area of the aging pad, skyshine must also be included when calculating public and worker doses. The expected length of aging will also necessitate some design adjustments. Under 10 CFR 72.236, DCS systems are initially certified for a period of 20 years [2]. Although the Yucca Mountain facility is not intended to be a storage facility under 10 CFR 72, the operational life of the SNF Aging System is 50 years [1]. Any cask system selected for use in aging will have to be qualified to this design lifetime. These considerations are examined, and a summary is provided of the adaptations that must be made in order to use DCS technologies successfully at a geologic repository.
Author:
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ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
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Category :
Languages : en
Pages :
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Category : Nuclear fuels
Languages : en
Pages : 2
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Author:
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Category : Power resources
Languages : en
Pages : 992
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Author: Gideon Rose
Publisher: Foreign Affairs
ISBN: 0876096267
Category : Political Science
Languages : en
Pages : 338
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Book Description
Although we’re not particularly well known for it, we at Foreign Affairs care a great deal about the state of the physical world and all its inhabitants, and have run a substantial number of articles about environmental, conservation, and climate issues. So we decided this spring that it was time to pull together some of the highlights of our coverage in this special collection. The articles presented span a range of topics and perspectives, from Steven M. Wise on animal rights to Bjorn Lomborg on environmental alarmism, Elizabeth Economy on China’s pollution problem, and Fred Krupp on fracking. Reading them over, it is hard not to be shaken by the scale of the damage being wrought on the planet and its non-human inhabitants by rapid, unregulated growth around the globe. But it is also hard not to recognize how much sensible public policy could do to address the problem. We hope this is a useful guide in those efforts.
Author: International Atomic Energy Agency
Publisher:
ISBN: 9789201061195
Category : Technology & Engineering
Languages : en
Pages :
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Book Description
This publication is a revision by amendment of IAEA Safety Standards Series No. SSG-15 and provides recommendations and guidance on the storage of spent nuclear fuel. It covers all types of storage facility and all types of spent fuel from nuclear power plants and research reactors. It takes into consideration the longer storage periods beyond the original design lifetime of the storage facility that have become necessary owing to delays in the development of disposal facilities and the reduction in reprocessing activities. It also considers developments associated with nuclear fuel, such as higher enrichment, mixed oxide fuels and higher burnup. Guidance is provided on all stages in the lifetime of a spent fuel storage facility, from planning through siting and design to operation and decommissioning. The revision was undertaken by amending, adding and/or deleting specific paragraphs addressing recommendations and findings from studying the accident at the Fukushima Daiichi nuclear power plant in Japan.
Author: Lawrence C. Lynnworth
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 728
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Book Description
Here's a freakish book announced at $99.00 (tent.) it is published at a distinctly lower price. Ultrasonics allows operations to continue without perturbation or contamination. Lynnworth covers theory, techniques, and applications, consistently favoring intuitive explanations over rigorous mathemat.
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Category : Nuclear engineering
Languages : en
Pages : 608
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Book Description
Author:
Publisher: International Atomic Energy Agency
ISBN: 9789201007193
Category : Technology & Engineering
Languages : en
Pages : 40
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Book Description
This publication identifies issues and challenges relevant to the development and implementation of options, policies, strategies and programmes for ensuring safe, secure, and effective storage of spent fuel until transport for reprocessing or disposal. The target audience of this publication includes policy and decision makers who need to be aware of the implicit risks and costs associated with decision timing for determining and implementing an end point for spent fuel management (such as reprocessing or disposal) to ensure the responsible and sustainable use of nuclear energy. The publication will assist those within the nuclear industry in communicating the importance of a clear, credible and sustainable spent fuel management strategy and will encourage decision makers to consider different approaches that may be useful in addressing the uncertainties resulting from an unknown storage duration and an undefined end point for spent fuel management.
