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ASTM C1457-2000(2010)e1

用载气萃取法测定氧化铀粉末与颗粒总氢含量的试验方法

Standard Test Method for the Determination of Total Hydrogen Content of Uranium Oxide Powders and Pellets by Carrier Gas Extraction

适用范围:<p>Uranium dioxide is used as a nuclear-reactor fuel. Gadolinium oxide is used as an additive to uranium dioxide. In order to be suitable for this purpose, these materials must meet certain criteria for impurity content. This test method is designed to determine whether the hydrogen content meets Specifications <a href="http://myastm.astm.org/SUBSCRIPTION/NewValidateSubscription.cgi?C753-HTML">C753</a>, <a href="http://myastm.astm.org/SUBSCRIPTION/NewValidateSubscription.cgi?C776-HTML">C776</a>, <a href="http://myastm.astm.org/SUBSCRIPTION/NewValidateSubscription.cgi?C888-HTML">C888</a>, and <a href="http://myastm.astm.org/SUBSCRIPTION/NewValidateSubscription.cgi?C922-HTML">C922</a>.</p><p id="s00002">1.1 This test method applies to the determination of hydrogen in nuclear-grade uranium oxide powders and pellets to determine compliance with specifications. Gadolinium oxide (Gd<sub>2</sub>O<sub>3</sub>) and gadolinium oxide-uranium oxide powders and pellets may also be analyzed using this test method.</p> <p id="s00003">1.2 This standard describes a procedure for measuring the total hydrogen content of uranium oxides. The total hydrogen content results from absorbed water, water of crystallization, hydro-carbides and other hydrogenated compounds which may exist as fuel''s impurities.</p> <p id="s00004">1.3 This test method covers the determination of 0.05 to 200 <span class=''unicode''>x03BC;</span>g of residual hydrogen.</p> <p id="s00005">1.4 This test method describes an electrode furnace carrier gas combustion system equipped with a thermal conductivity detector.</p> <p id="s00006">1.5 The preferred system of units is micrograms hydrogen per gram of sample (<span class=''unicode''>x03BC;</span>g/g sample) or micrograms hydrogen per gram of uranium (<span class=''unicode''>x03BC;</span>g/g U).</p> <p id="s00078">1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.</p> <p id="s00007">1.7 <span class="italic">This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.</span>

中标分类号: F40 - 能源、核技术 - 核材料、核燃料综合

ICS分类号: 27.120.30 - 能源和热传导工程 - 裂变物质

标准组织: ASTM - 美国材料与试验协会标准

全文来源: WF

英文关键词: gadolinium oxide gadolinium oxide-uranium oxide hydrogen content impurity content uranium oxide Carrier gases Hydrogen content--nuclear materials Total hydrogen applications Uranium oxide (U<inf>3</inf>O<inf>8</inf>)

语种: 汉语

页数: 4

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