专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06697450B2 Zirconium-alloy clad fuel rods containing metal oxide for mitigation of secondary hydriding 失效
标题翻译：包含金属氧化物的锆合金包覆燃料棒，用于缓解二次氢化
公开(公告)号：US06697450B2
公开(公告)日：2004-02-24
申请号：US10330282
申请日：2002-12-30
申请人： Swaminathan Vaidyanathan , John H. Davies , Steven B. Wisner
发明人： Swaminathan Vaidyanathan , John H. Davies , Steven B. Wisner
IPC分类号： G21C300
CPC分类号： G21C3/18 , G21C3/20 , G21Y2002/104 , G21Y2004/101 , Y02E30/40
摘要： Method of fabricating a fuel rod, comprising providing an effective amount of a metal oxide in the fuel rod to generate steam and mitigate the tendency for secondary hydriding. Fuel rods fabricated according to the method of the invention are also provided.
摘要翻译：制造燃料棒的方法，包括在燃料棒中提供有效量的金属氧化物以产生蒸汽并减轻二次氢化的倾向。还提供了根据本发明的方法制造的燃料棒。

2. 发明授权

US4567017A Fuel pin cladding 失效
标题翻译：燃油销包层
公开(公告)号：US4567017A
公开(公告)日：1986-01-28
申请号：US562146
申请日：1983-12-16
申请人： Swaminathan Vaidyanathan , Martyn G. Adamson
发明人： Swaminathan Vaidyanathan , Martyn G. Adamson
IPC分类号： G21C3/20 , G21C3/00
CPC分类号： G21C3/20 , Y02E30/40
摘要： An improved fuel pin cladding, particularly adapted for use in breeder reactors, consisting of composite tubing with austenitic steel on the outer portion of the thickness of the tube wall and with nickel and/or ferritic material on the inner portion of the thickness of the tube wall. The nickel forms a sacrificial barrier as it reacts with certain fission products thereby reducing fission product activity at the austenitic steel interface. The ferritic material forms a preventive barrier for the austenitic steel as it is immune to liquid metal embrittlement. The improved cladding permits the use of high density fuel which in turn leads to a better breeding ratio in breeder reactors, and will increase the threshold at which failure occurs during temperature transients.
摘要翻译：改进的燃料销覆层，特别适用于增殖反应堆，由复合管与奥氏体钢组成，其外壁部分为管壁厚度，镍和/或铁素体材料在管内部的厚度壁。镍与某些裂变产物反应形成牺牲性阻挡层，从而降低奥氏体钢界面的裂变产物活性。铁素体材料形成奥氏体钢的预防屏障，因为它不受液态金属脆化的影响。改进的包层允许使用高密度燃料，这又导致在育种反应堆中更好的育种比例，并且将增加在温度瞬变期间发生故障的阈值。

3. 发明授权

US4470947A Double-clad nuclear fuel safety rod 失效
标题翻译：双层核燃料安全杆
公开(公告)号：US4470947A
公开(公告)日：1984-09-11
申请号：US335995
申请日：1981-12-30
申请人： William H. McCarthy , Donald B. Atcheson , Swaminathan Vaidyanathan
发明人： William H. McCarthy , Donald B. Atcheson , Swaminathan Vaidyanathan
IPC分类号： G21C3/16 , G21C9/02 , G21C3/02 , G21C3/18
CPC分类号： G21C9/022 , G21C3/16 , Y02E30/40
摘要： A device for shutting down a nuclear reactor during an undercooling or overpower event, whether or not the reactor's scram system operates properly. This is accomplished by double-clad fuel safety rods positioned at various locations throughout the reactor core, wherein melting of a secondary internal cladding of the rod allows the fuel column therein to shift from the reactor core to place the reactor in a subcritical condition.
摘要翻译：一种用于在过冷或过功率事件期间关闭核反应堆的装置，无论反应堆的冲击系统是否正常运行。这是通过位于整个反应堆堆芯的不同位置的双层包层燃料安全杆实现的，其中杆的次级内部包层的熔化允许其中的燃料柱从反应堆芯移动以将反应器置于亚临界状态。

4. 发明申请

US20080013666A1 Method for in-situ production of hyperstoichiometric oxide fuel 审中-公开
标题翻译：用于原位生产高化学计量氧化物燃料的方法
公开(公告)号：US20080013666A1
公开(公告)日：2008-01-17
申请号：US11624388
申请日：2007-01-18
申请人： Swaminathan Vaidyanathan
发明人： Swaminathan Vaidyanathan
IPC分类号： G21C3/00
CPC分类号： G21C21/02 , G21C3/623 , Y02E30/38
摘要： Method of producing hyperstoichiometric oxide fuel starting from near-stoichiometric composition, in-situ, while operating in a nuclear reactor, comprising a heavy metal fuel oxide such as uranium oxide or plutonium oxide or mixtures thereof and providing effective amounts of a reactant metal oxide, chosen from among bismuth oxide (Bi2O3), copper oxide (CuO) or iron oxide (Fe2O3) or a mixture thereof, that is predicted to react with the fuel oxide during initial power operation. The reaction will result in hyperstoichiometric fuel that in turn exhibits an increased creep rate and thereby lowers cladding loads from Pellet-Cladding Interaction (PCI), helping to mitigate PCI failures. The oxygen in the fuel in excess of stoichiometric composition reduces the tendency for secondary degradation that occurs under dry hydrogen conditions in case of inadvertent breach of the fuel cladding.
摘要翻译：当在核反应堆中操作时，从近化学计量组合物起始生产高化学计量氧化物燃料的方法，包括重金属燃料氧化物如氧化铀或钚氧化物或其混合物，并提供有效量的反应性金属氧化物，选自氧化铋（Bi 2 O 3 O 3），氧化铜（CuO）或氧化铁（Fe 2 O 3 O 3） / SUB>）或其混合物，其被预测为在初始电力操作期间与燃料氧化物反应。这种反应将导致过度化学计量的燃料，这又反过来表现出增加的蠕变速率，从而降低了颗粒包层相互作用（PCI）的包层载荷，有助于减轻PCI故障。超过化学计量组成的燃料中的氧气减少了在无意中破坏燃料包层的情况下在干氢条件下发生的二次降解的趋势。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式