|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||376/457 ; 376/900 ; 148/519 ; 148/672|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 22 인용 특허 : 0|
A Zircaloy cladding having an outer region comprising fine precipitates and inner region comprising coarse precipitates is provided. The outer region comprises about 10% and the inner region comprises about 90% of the cladding wall thickness. Such Zircaloy tubing is resistant to propagation of cracks and at the same time resistant to corrosion in boiling water reactors (BWR). Resistance to damage caused by the pellet-cladding-interaction can be achieved by standard application of a zirconium or zirconium-alloy liner on the tubing inside surface.
A nuclear fuel bundle comprising: a lower tie plate for supporting an upstanding matrix of fuel rods and permitting the entry of water moderator; an upper tie plate and permitting the exit of water and generated steam moderator; a plurality of fuel rods, said fuel rods including a zirconium alloy cladding tube having inner and outer surfaces with a thickness of alloy there between, the alloy comprising zirconium alloy having metals other than zirconium therein in sufficient quantities to form precipitates dispersed between said inner and outer surfaces, ...