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    • 9. 发明专利
    • Core and fuel assembly of light water reactor
    • 轻水反应堆的核心和燃料组装
    • JP2010038852A
    • 2010-02-18
    • JP2008205061
    • 2008-08-08
    • Hitachi-Ge Nuclear Energy Ltd日立Geニュークリア・エナジー株式会社
    • TAKEDA RENZOMIWA JUNICHIMORIYA KIMIAKI
    • G21C5/18G21C3/328G21C3/62
    • G21C3/326G21C3/42G21C2003/3267Y02E30/38
    • PROBLEM TO BE SOLVED: To provide a core of a light water reactor capable of further raising the margin of safety thereof without deteriorating economic efficiency of the light water reactor. SOLUTION: A core 20 loaded with a plurality of fuel assemblies 1 containing a nuclear fuel substance obtained by reprocessing and containing ≥40% and ≤60% of Pu-239 in all transuranic elements contained at the time of a burnup fraction of 0 constitutes an upper blanket zone 5A, an upper fuel zone 6A, an inner blanket zone 7A, a lower fuel zone 8A and a lower blanket zone 9A listed from the upper end. While a reactor is being operated at a rated capacity, the top end of a neutron absorbent packed zone of a safety rod is located at the position of the bottom end of the lower blanket zone 9A. The upper blanket zone 5A has a height of 70 mm, and the lower blanket zone 9A has a height of 280 mm. The sum of the height of the upper blanket zone and the height of the lower blanket zone is 350 mm. The height of the zone 9A is four times that of the zone 5A. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供能够进一步提高其安全裕度的轻水反应堆的核心,而不会降低轻水反应堆的经济效率。 解决方案:装载有多个燃料组件1的核心20,其包含通过后处理而获得的核燃料物质,并且在燃耗部分所包含的所有超铀元素中含有≥40%和≤60%的Pu-239 0构成从上端列出的上橡皮布区域5A,上燃料区域6A,内覆层区域7A,下燃料区域8A和下橡皮布区域9A。 当反应器以额定容量运行时,安全杆的中子吸收剂填充区域的顶端位于下部橡皮布区域9A的底端的位置。 上毯毯区域5A的高度为70mm,下橡皮布区域9A的高度为280mm。 上覆层区域的高度和下覆盖区域的高度之和为350mm。 区域9A的高度是区域5A的高度的四倍。 版权所有(C)2010,JPO&INPIT