BS ISO 15859-4-2004 航空航天系统.航天系统.流体特性、抽样和试验方法.氦

标准号：BS ISO 15859-4-2004
中文标准名称：航空航天系统.航天系统.流体特性、抽样和试验方法.氦
英文标准名称：Aerospace series - Space systems - Fluid characteristics, sampling and test methods - Helium
标准类型：V13
发布日期：2004/8/13 12:00:00
实施日期：2004/8/13 12:00:00
中国标准分类号：V13
国际标准分类号：49.140
适用范围：This part of ISO 15859 specifies limits for the composition of helium and establishes the sampling and test requirements applicable for the verification of the helium composition. This part of ISO 15859 is applicable to helium, used in both flight hardware and ground facilities, systems and equipment, of the following types and grades. — Type Ⅰ: gaseous — Grade A: purging and pressurizing helium; — Grade F: purging and pressurizing helium; — Grade J: purging and pressurizing helium; — Type Ⅱ: liquid — Grade A: purging and pressurizing helium; — Grade F: purging and pressurizing helium. This part of ISO 15859 is applicable to influents only within the specified limits herein. This part of ISO 15859 is applicable to any sampling operation required to ensure that, when the fluid enters the launch vehicle or spacecraft, the fluid composition complies with the limits provided hereafter or with any technical specification agreed to for a particular use.