1.1 This standard specifies the terms and definitions, classification, technical requirements, test methods, inspection rules, and marking, packaging, storage and transportation for aluminum and aluminum alloy liquid nitrogen biological container (hereinafter referred to as container).
1.2 This standard is applicable to containers that store liquid nitrogen under atmospheric pressure and adopt high vacuum multilayer insulation with effective volume of 1L~175L and calibre of 30mm~216mm.
1.3 This standard is not applicable to the following containers:
——storing liquid nitrogen under pressure;
——storing liquid oxygen and other low-temperature liquid.
2 Normative References
The following documents are indispensable for application of this document. For dated references, only the dated edition of the normative reference referred to applies. For undated references, the latest editions (including all amendments) apply.
GB/T 191-2008 Packaging-Pictorial Marking for Handling of Goods
GB/T 3190-2008 Wrought Aluminium and Aluminium Alloy - Chemical Composition
GB/T 3195-2008 Aluminium and Aluminium Alloys Drawn Round Wire
GB/T 3198-2010 Aluminium and Aluminium Alloys Foils
GB/T 3880.1-2006 Wrought Aluminium and Aluminium Alloy Plates, Sheets and Strips For General Engineering-Part 1 Technical Conditions of Delivery
GB/T 3880.2-2006 Wrought Aluminium and Aluminium Alloy Plates, Sheets and Strips For General Engineering - Part 2: Mechanical Properties
GB/T 4842-2006 Argon
GB/T 6388-1986 Transport Package Shipping Mark
GB/T 6543-2008 Single and Double Corrugated Boxes for Transport Packages
GB/T 10858-2008 Aluminium and Aluminium Alloy Wires and Rods
GB/T 13550-1992 Molecular Sieve 5A and Its Determination
GB/T 16958-2008 Biaxially Oriented Polyester Film for Package
GB/T 18443.2 Testing Method of Performance for Vacuum Insulation-Cryogenic Equipment - Part 2: Vacuum Degree Measurement
GB/T 18443.3 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 3: Leak Rate Measurement
GB/T 18443.8 Testing Method of Performance for Vacuum Insulation Cryogenic Equipment - Part 8: Volume Measurement
JB/T 4734 Aluminium Welded Vessels
HG/T 2690-1995 Molecular Sieve 13X
SN/T 0273-2002 Rules for the Inspection of Transport Packaging for Export Commodities - Wooden Box
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
interspace
enclosed space between the liner and enclosure of container
3.2
high vacuum multilayer insulation
insulation mode formed by pumping high vacuum, with multilayer of thermal radiation shields separated by heat insulating material arranged in the space of insulated layer
3.3
nominal volume
volume specified by container model
3.4
effective volume
the maximum permissible volume of liquid in liner under service state
3.5
calibre
inside diameter of neck tube
3.6
static liquid nitrogen holding time
number of days taken for liquid nitrogen in the container to be completely evaporated under static arrangement and standard condition (atmospheric pressure 101.325 kPa and environment temperature 20℃) when the liquid nitrogen is filled in, prechilled and reaches heat balance with 100% filling rate
3.7
leakage of vacuum interspace
gas volume that leaks into the vacuum interspace in unit time
