This part of GB/T 18442 specifies the technical requirements for material, design, fabrication and inspection of inner vessel of static vacuum insulated cryogenic pressure vessel fabricated by pressure strengthening (hereafter referred to as inner vessel).
This part is applicable to inner vessel meeting all of the following requirements simultaneously:
a) Meeting the requirements of 1.2, GB/T 18442.1, with contained medium of cryogenic liquefied gas;
b) Its material is austenitic stainless steel;
c) Its nominal thickness is not less than 4mm but not greater than 24mm, and it is composed of single diameter of cylinder and standard ellipsoidal end enclosure;
d) It's subject to pressure strengthening treatment at room temperature.
This part is not applicable to inner vessel filled with medium with moderate or above toxicity hazard degree.
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 228.1 Metallic materials - Tensile Testing - Part 1: Method of Test at Room Temperature
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method
GB/T 232 Metallic Materials - Bend test
GB/T 2653 Bend Test Methods on Welded Joints
GB/T 3808 Verification of Pendulum-type Impact Testing Machines
GB/T 12160 Calibration of Extensometers Used in Uniaxial Testing
GB/T 14976 Stainless Steel Seamless Tubes for Fluid Transport
GB/T 16825.1 Verification of Static Uniaxial Testing Machines - Part 1: Tension/Compression Testing Machines - Verification and Calibration of the Force-measuring System
GB/T 18442.1~18442.6 Static Vacuum Insulated Cryogenic Pressure Vessel
GB/T 24511 Stainless Steel Plate, Sheet and Strip for Pressure Equipment
NB/T 47010 Stainless and Heat-resisting Steel Forgings for Pressure Equipment
NB/T 47013.2 Nondestructive Testing of Pressure Equipment - Part 2: Radiographic Testing
NB/T 47013.5 Nondestructive Testing of Pressure Equipment - Part 5: Penetrant Testing
GB/T 18442.7-2017 The following standards are cited：
GB/T 18442.7-2017 Cited by the following standards：
