T/SZBX 102-2023 Fixed vacuum insulation deep cryogenic pressure vessel

Scope

Scope: This document applies to cryogenic containers that meet the following conditions simultaneously: — The working pressure of the inner container is not less than 0.1 MPa; — The geometric volume is not less than 1 m3; — The insulation method is vacuum powder insulation; — The storage medium is refrigerated liquefied gas with a standard boiling point not lower than -196 °C. This document does not apply to cryogenic containers in the following ranges: — The materials of the inner container and shell are non-ferrous metals or non-metals; — Spherical structures; — Vacuum composite insulation, high-vacuum multi-layer insulation, and piled insulation forms; — Mobile ones; — Those storing refrigerated liquefied gas with a standard boiling point lower than -196 °C; — Storage media classified as toxic gases according to GB 12268; — Special requirements for defense military equipment and other applications; — Nuclear applications (or those exposed to nuclear radiation). Main technical content: This document specifies the basic requirements for fixed vacuum insulated cryogenic pressure vessels (hereinafter referred to as "cryogenic containers") in terms of materials, design, manufacturing, inspection and testing, marking and labeling, factory documents, storage, coating, and transport packaging. Note 1: The definition of the tank body is as follows: a) The beveled end face of the first circumferential joint welded to the external pipeline, the end face of the first threaded joint of the threaded connection, and the first flange sealing surface of the flange connection; b) The end covers and their fasteners of the tank body's openings; c) The welding seams connecting the tank body with non-pressurized components. Note 2: The pipelines include all pipes and fittings in cryogenic containers that may come into contact with cryogenic media. Note 3: The main pressurized components include the inner container cylinder, the inner container head, and the media-contacting pipe socke

Development Information

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