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1. 发明申请

US20060236755A1 Accelerated ultralow moisture permeation measurement 有权
标题翻译：加速超低湿度渗透测量
公开(公告)号：US20060236755A1
公开(公告)日：2006-10-26
申请号：US11114814
申请日：2005-04-25
申请人： Roko Bujas , Ralf Dunkel , William Raggio
发明人： Roko Bujas , Ralf Dunkel , William Raggio
IPC分类号： G01N15/08
CPC分类号： G01N15/0826 , G01N15/0806 , G01N2015/086 , G01T1/185
摘要： By measuring ultralow moisture permeation through a barrier material sample at a temperature substantially above ambient, definitive values are produced on an accelerated basis that can be used to accurately predict long term daily performance of that barrier material. The sample is heated to a desired test temperature where there is controlled access to both its upstream and downstream surfaces, and HTO vapor is then supplied at predetermined relative humidity to the upstream surface by fracturing a glass ampoule containing not more than 10 millicuries of specific radioactivity for each test. Radioactive gas permeating from the downstream surface is collected by circulating a very slow flow of dry carrier gas past the downstream surface, which stream flows to an ionization chamber containing a beta-particle radiation monitor. Continuous monitoring generates signals that are converted to calculate instantaneous permeation rates through the sample, and operation at such elevated temperature is carried out until the values being monitored reach a steady state, allowing accurate prediction of the extent of long term barrier protection against moisture permeation the sample will exhibit.
摘要翻译：通过在基本上高于环境温度的温度下测量通过阻挡材料样品的超低水分渗透，可以加速地产生可用于准确预测该阻隔材料的长期日常性能的确定值。将样品加热到所需的测试温度，在那里可控制地进入其上游和下游表面，然后通过压裂含有不超过10毫升特定放射性的玻璃安瓿来将HTO蒸气以预定的相对湿度供应到上游表面为每次测试。通过将非常缓慢的干燥载气流经过下游表面循环而收集从下游表面渗透的放射性气体，该流将流入含有β粒子辐射监测器的电离室。连续监测产生的信号被转换成计算通过样品的瞬时渗透速率，并且在这样升高的温度下进行操作，直到监测值达到稳定状态，允许准确预测长期屏障防止水分渗透的程度样品将展出。

2. 发明授权

US4028446A Method and device for the fabrication of nuclear fuel compacts 失效
标题翻译：用于制造核燃料压块的方法和装置
公开(公告)号：US4028446A
公开(公告)日：1977-06-07
申请号：US571390
申请日：1975-04-24
申请人： Roko Bujas
发明人： Roko Bujas
IPC分类号： G21C3/62 , G21C21/02 , G21C21/00
CPC分类号： G21C21/02
摘要： In a method for the fabrication of nuclear fuel compacts, a cylindrical mold is filled with coated particles containing fissile and fertile material as well as grains of graphite if necessary. The mold is heated to a temperature above the softening temperature of pitch which is injected into the mold in the hot state through openings provided at regular intervals along the mold wall and having a diameter which is smaller than the size of the coated particles, the injection of pitch being carried out at right angles to the generator-lines of the cylinder formed by the mold.
摘要翻译：在用于制造核燃料压块的方法中，如果需要，圆柱形模具中填充有包含易裂变和可育材料的涂覆颗粒以及石墨颗粒。将模具加热至高于软化温度的温度，该温度通过沿着模具壁规则间隔设置的开孔以及直径小于涂覆颗粒尺寸的开口在注射到模具中的温度下进行，注射的间距与由模具形成的圆筒的发电机线成直角地进行。

3. 发明申请

US20050167598A1 Method and apparatus for measuring ultralow permeation 有权
标题翻译：用于测量超低渗透度的方法和装置
公开(公告)号：US20050167598A1
公开(公告)日：2005-08-04
申请号：US10772765
申请日：2004-02-04
申请人： Roko Bujas , Ralf Dunkel
发明人： Roko Bujas , Ralf Dunkel
IPC分类号： G01F1/00 , G01N15/08
CPC分类号： G01N15/0826 , G01N2015/086
摘要： Method and apparatus for testing ultralow moisture permeation through a sample such as a thin barrier film by exposing one surface of a sample to be tested for moisture permeation to a predetermined humidity of HTO. The HTO permeating therethrough is collected in a stream of dry gas, preferably methane, at a known very slow flow rate, and monitored for its radioactivity content. By very carefully sizing the respective chambers, continuously monitoring using a particularly sensitive device and appropriately converting the signals, accurate assessment of permeation rates even as low as very small fractions of a gram of water per square meter per day can be obtained. Ultralow oxygen permeation is alternatively measured using 14CO. Methods are also shown for measuring permeation that would occur through a perimeter seal and for measuring permeation which would result from gaseous entry into edge surfaces of a composite film.
摘要翻译：通过将要测试的样品的一个表面暴露于HTO的预定湿度来测试通过诸如薄屏障膜的样品的超低水分渗透的方法和装置。以已知非常慢的流速将渗透的HTO以干燥气体，优选甲烷流收集，并监测其放射性含量。通过非常仔细地确定各个室的尺寸，使用特别敏感的装置连续监测并适当地转换信号，可以获得即使低至每平方米每天几克克水的低渗透率的精确评估。超低氧透过率可以使用<！ - SIPO

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