This part of GB/T 18442 specifies the basic requirements for static vacuum insulated cryogenic pressure vessels (hereinafter referred to as "cryogenic vessels"). The cryogenic vessels specified in GB/T 18442 include tanks, pipelines, safety accessories, instruments, handling accessories, supports, pressure build coils, vaporizers, etc.
Note 1: the tank is defined as follows:
a) the beveled end surface of the first pass of circumferential welded joint between the tank and the external pipeline, the first threaded joint end surface for thread connection and the first flange sealing surface for flange connection;
b) the end cover and its fasteners of the tank opening part;
c) the connection weld between the tank and the non-pressure elements.
Note 2: the pipeline includes all pipes and fittings on cryogenic vessels that may be in contact with the contents.
Note 3: the main pressure elements include the cylinder and seal head of inner vessel as well as the pipe base, flange, manhole cylinder, manhole seal head, etc. in contact with the contents.
This part is applicable to cryogenic vessels that simultaneously meet the following conditions:
a) cryogenic vessel with the working pressure of inner vessel not less than 0.1MPa;
b) cryogenic vessel with the geometric volume not less than 1m3;
c) cryogenic vessel with the insulation mode of vacuum powder insulation, vacuum composite insulation or high vacuum multilayer insulation;
d) cryogenic vessel storing refrigerated liquefied gas contents with standard boiling point not lower than -196℃;
This part is not applicable to cryogenic vessels that meet the following conditions:
a) cryogenic vessel with the inner vessel and outer jacket made of non-ferrous metal or non-metallic materials;
b) cryogenic vessel with spherical structure;
c) cryogenic vessel with stacked insulation;
d) transportable cryogenic vessel;
e) cryogenic vessel storing refrigerated liquefied gas contents with standard boiling point lower than -196℃;
f) cryogenic vessel storing toxic gas as specified in GB 12268;
g) cryogenic vessel with special requirements such as national defense military equipment.
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/T 150 (all parts) Pressure vessels
GB/T 18442.2 Static vacuum insulated cryogenic pressure vessels - Part 2: Materials
GB/T 18442.3 Static vacuum insulated cryogenic pressure vessels - Part 3: Design
GB/T 18442.4 Static vacuum insulated cryogenic pressure vessels - Part 4: Fabrication
GB/T 18442.5 Static vacuum insulated cryogenic pressure vessels - Part 5: Inspection and testing
GB/T 18442.6 Static vacuum insulated cryogenic pressure vessels - Part 6: Safety protection
GB/T 18442.7 Static vacuum insulated cryogenic pressure vessels - Part 7: Rules of pressure strengthening for inner vessels
GB/T 26929 Terminology for pressure vessels
TSG 21 Supervision regulation on safety technology for stationary pressure vessel
TSG 07 Regulation for production and filling licensing of special equipment
GB/T 18442.1-2019 The following standards are cited：
GB/T 18442.1-2019 Cited by the following standards：
