ISO 18213-4-2008 核燃料技术.核材料衡算用容器校准和体积测定.第4部分:装备汲取管的衡算容器中液体高度的精确测定、低速起泡率

标准号：ISO 18213-4-2008
中文标准名称：核燃料技术.核材料衡算用容器校准和体积测定.第4部分:装备汲取管的衡算容器中液体高度的精确测定、低速起泡率
英文标准名称：Nuclear fuel technology - Tank calibration and volume determination for nuclear materials accountancy - Part 4: Accurate determination of liquid height in accountancy tanks equipped with dip tubes, slow bubbling rate
标准类型：F40
发布日期：2008/3/15 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：F40
国际标准分类号：27.120.30
适用范围：This part of ISO 18213 specifies a procedure for making accurate determinations of the liquid height innuclear-materials-accountancy tanks that are equipped with pneumatic systems for determining the liquidcontent. With such systems, gas is forced through a probe (dip tube) whose tip is submerged in the tank liquid.The pressure required to induce bubbling is measured with a manometer located at some distance from thetip of the probe. This procedure applies specifically when a very slow bubbling rate is employed.A series of liquid height determinations made with a liquid of known density is required to estimate a tank'scalibration equation (see ISO 18213-1), the function that relates the elevation (height) of a point in the tank toan independent determination of tank volume associated with that point. For accountability purposes, thetank's measurement equation (the inverse of its calibration equation) is used to determine the volume ofprocess liquid in the tank that corresponds to a given determination of the liquid height.