GB/T 4844-2011: Pure Helium, High Pure Helium and Ultra Pure Helium

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Scope

This Standard specifies the specifications, inspection rules, test methods, and product
packaging, marking, storage and transportation and safety warnings of gaseous
helium and liquid helium.
This Standard applies to pure helium, high pure helium and ultra pure helium which
are extracted using the cryogenic method and mainly used for light-guide fibre, laser,
welding and cutting, diving breathing, cryogenic superconductor, supercharge,
cleaning, protective gas and so on.
Molecular formula. He.
Relative molecular mass. 4.002 602 (according to 2007 International Relative Atomic
Masses).

Basic Data

Standard ID	GB/T 4844-2011 (GB/T4844-2011)
Description (Translated English)	Pure Helium, High Pure Helium and Ultra Pure Helium
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G86
Classification of International Standard	71.100.20
Word Count Estimation	12,169
Date of Issue	2011-12-30
Date of Implementation	2012-10-01
Older Standard (superseded by this standard)	GB 4844.2-1995; GB/T 4844.3-1995
Quoted Standard	GB 190; GB 5099; GB/T 5832.1; GB/T 5832.2; GB/T 5832.3; GB 7144; GB 14194; JB/T 5905; JB 5898; " Cylinders Safety Supervision" 2000; " Stationary Pressure Vessels safety Technology Supervision " 2009
Regulation (derived from)	National Standard Approval Announcement 2011 No.23
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the technical requirements of gaseous helium and liquid helium, inspection rules, inspection methods, product packaging, signs, storage and security alerts, etc. This standard applies to cryogenic extraction of nitrogen, ultra- high purity nitrogen and nitrogen, mainly for optical fiber, Laser, welding and cutting, diving breathing, low-temperature superconductivity, supercharger, cleaning, protective gas.