Standard No.:	GB/T 16774-2012
English Name:	Autoboosting caliber liquid nitrogen container
Chinese Name:	自增压式液氮容器
Chinese Classification:	B90    Farming and foresting machinery and tools
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ;SAC
Issued on:	2012-12-31
Implemented on:	2013-7-1
Status:	valid
Superseding:	GB 16774-1997 Autoboosting calibre liquid nitrogen container
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	210.0
Delivery:	via email in 1 business day

Autoboosting caliber liquid nitrogen container 1 Scope 1.1 This Standard specifies the requirements in product classification, technical requirements, test methods, inspection rules, marking, packaging, storage and transportation of austenitic stainless steel autoboosting caliber liquid nitrogen containers (hereinafter referred to as autoboosting containers). 1.2 This Standard is applicable to the design and manufacturing of autoboosting containers, applied with high vacuum multilayer insulation, used for storing and/or transporting liquid nitrogen, with a working pressure of less than 0.1 Mpa and an effective volume of 50L ~ 800L. 1.3 This Standard is not applicable to the following autoboosting containers: —— Ones used for storage of liquid nitrogen under pressure; —— Ones used for storage of liquid oxygen or other cryogenic liquids. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 150.1 Pressure vessels - Part 1: General requirements GB 150.2 Pressure Vessels - Part 2: Materials GB 150.3 Pressure vessels - Part 3: Design GB/T 191-2008 Packaging - Pictorial marking for handling of goods GB 567.1 Bursting disc safety devices - Part 1: Basic requirement GB 567.2 Bursting disc safety devices - Part 2: Application, selection and installation GB 567.3 Bursting disc safety devices - Part 3: Classification and mounting dimensions GB/T 1226-2010 General pressure gauge GB/T 3198-2010 Aluminium and aluminium alloys foils GB/T 3280-2007 Cold rolled stainless steel plate, sheet and strip GB/T 12241-2005 Safety valves - General requirements GB/T 13550-1992 Molecular sieve 5A and its determination GB/T 14976-2012 Seamless stainless steel pipes for fluid transport GB/T 16958-2008 Biaxially oriented polyester film for package GB/T 18442.3 Static vacuum insulated cryogenic pressure vessels - Part 3: Design 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 18443.5 Testing method of performance for vacuum insulation cryogenic equipment - Part 5: Static evaporation rate measurement GB/T 18443.8 Testing method of performance for vacuum insulation cryogenic equipment - Part 8: Volume measurement GB 24511-2009 Stainless steel plate, sheet and strip for pressure equipment HG/T 2690-1995 Molecular sieve 13X NB/T 47014 Welding procedure qualification for pressure equipment 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB 150.1~150.3 and GB/T 18442.3 and the following apply. 3.1 geometric volume internal volume of the inner liner determined according to the designed geometric dimension minus the volume occupied by the inner parts 3.2 effective volume maximum volume of liquid that is allowed to be filled in an inner liner in use 3.3 vacuum designed life normal service life of container interlayer vacuum determined in the design, which is the time interval from the container leaving the factory to the moment when the static evaporation rate exceeds the upper limit value of the standard index by 60% 4 Classification 4.1 Autoboosting containers are classified into vertical and horizontal types. 4.2 The type of a container shall be determined according to the following requirements: Example 1: YDZ-50 represents a vertical autoboosting container with an effective volume of 50L. Example 2: YDZ-200W represents a horizontal autoboosting container with an effective volume of 200L. 4.3 See Annex A for the types and specifications of autoboosting containers. 4.4 The structures of autoboosting containers are shown in Figures 1 and 2. 5 Technical requirements 5.1 General 5.1.1 The use ambient temperature of autoboosting containers shall be -20℃ to 50℃; 5.1.2 The materials that may come into contact with liquid nitrogen shall be compatible with liquid nitrogen. 5.1.3 Purchased parts for containers shall have quality certificate or conformity certificate. 5.2 Materials 5.2.1 Steel plate Austenitic stainless steel plates for shell and liner shall meet the requirements specified in GB/T 3280 or GB 24511.

Foreword i 1 Scope 3 Terms and definitions 4 Classification 5 Technical requirement 6 Test method 7 Inspection rules 8 Marking, packaging, storage and transportation Annex A (Informative) Main types and specifications of autoboosting containers