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
