標準號：ISO 18213-6-2008
中文標準名稱：核燃料技術.核材料衡算用容器校準和體積測定.第6部分:裝備有汲取管的衡算容器中液體精確密度的容器內測定
英文標準名稱：Nuclear fuel technology - Tank calibration and volume determination for nuclear materials accountancy - Part 6: Accurate in-tank determination of liquid density in accountancy tanks equipped with dip tubes
標準類型：F40
發布日期：2008/3/15 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：F40
國際標準分類號：27.120.30
引用標準：ISO 18213-1-2007
適用范圍：This part of ISO 18213 specifies a procedure for making accurate determinations of the densities of processliquids from in-tank measurements of the liquid content. This procedure is applicable to tanks equipped withpneumatic systems for determining the liquid content that have two or more bubbler probes of differing lengths.It is necessary that the probes be fixed relative to each other and to the tank in which they are installed.The methods presented in this part of ISO 18213 yield acceptable results only for clear (i.e. free of suspendedsolids) liquids that are both homogeneous in concentration and at thermal equilibrium. The accuracy of themethod is limited by-- the accuracy of the density determinations for the calibration liquid, and-- the number and accuracy of the liquid height determinations used in the calculations.With state-of-the-art measurement technology and careful technique, and with water as a calibration liquid, itis possible to determine the density of homogeneous clear liquids with relative accuracy1) on the order of2 x 10 to 3 x 10, or approximately 0,2 kg/m3 or 0,3 kg/m3.