GB/T 3864-2008 in English

《GB/T 3864-2008工业氮》由TC206（全国气体标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
本标准代替ＧＢ／Ｔ３８６４―１９９６《工业氮》。本标准规定了工业氮的技术要求、检验方法以及包装、标志、贮运等。本标准适用于由分离空气制取的气态氮或液态氮，主要用作保护气、置换气、低温储藏等。 本标准与ＧＢ／Ｔ３８６４―１９９６相比主要变化如下：
―――修改了适用范围（见第１章）；
―――修改了规范性引用文件（见第２章）；
―――修改了技术要求（见表１）；
―――增加集装格装、杜瓦罐装包装方式（本标准的４．１．５）；
―――将氮气体积计算修改为规范性附录（本版的附录Ｂ；１９９６年版的６．８，６．１０）；
―――奥氏气体分析器及加工图修改为资料性附录（本版的５．８；１９９６年版的图１）；
―――将安全要求修改为安全警示（本版的附录Ｃ；１９９６年版的第７章）；
―――删除了前版的附录Ｂ。

1 Scope

This Standard specifies technical specifications, testing methods, packing, mark, storage and transportation of industrial nitrogen.
This Standard is applicable to gaseous nitrogen or liquid nitrogen (separated from air) used as shielding gas, displacement gas and cryogenic storage.
Molecular formula:N2
Relative molecular mass: 28.0134 (according to international relative atomic mass in 2005)

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 190 Packing Symbol of Dangerous Goods
GB/T 3723 Sampling of Chemical Products for Industrial Use — Safety in Sampling (GB/T 3723-1999, idt ISO 3165:1976)
GB 5099 Seamless Steel Gas Cylinders (GB 5099-1994, neq ISO 4705:1983)
GB/T 6285 Determination of Trace Oxygen in Gases — Eletrochemical Method
GB 7144 Coloured Cylinder Mark for Gases
GB 14194 Rules for Filling of Permanent Gas Cylinders
GB 15258 General Rules for Preparation of Precautionary Label for Chemicals
GB 16483 Safety Data Sheet for Chemical Products — Content and Order of Sections (GB 16483-2000, eqv ISO 11014-1:1994)
GB 16912 Safety Technology Regulation for Oxygen
GB 17264 Safety Specification for Filling Station of Permanent Gas Cylinders
JB/T 5905 Cryogenic Liquid Containers Insulated with Evacuated Multilayer Insulations
JB/T 6897 Cryogenic Liquid Road Tankers
JB/T 6898 Storage and Transportation Equipment for Cryogenic Liquid — Safety Rules
Supervision Regulation on Safety of Gas Cylinder
Supervision Regulation on Safety Technology for Pressure Vessel
Regulation on Safety Management and Supervision over Pressure Pipelines