T/ZHSE 2-2019 Active Group standards

T/ZHSE 2-2019 Periodic inspection specifications for steel spherical storage tanks

Publish Date: 2019-04-08 Implement Date: 2019-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/ZHSE 2-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Mechanical

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2019-04-08

Implement Date: 2019-05-01

Scope

Scope: This standard specifies the terms and definitions, general principles, preparation before inspection, and evaluation of inspection results for the regular inspection of steel spherical storage tanks (hereinafter referred to as "spherical tanks"). This standard applies to steel spherical storage tanks designed, manufactured, and assembled in accordance with the GB 12337 standard. Main technical content: 6. Inspection Implementation 6.1 Macroscopic Inspection 6.1.1 Macroscopic inspection shall be conducted in accordance with the visual inspection methods specified in NB/T 47013 to check the structural integrity, geometric dimensions, and surface conditions (such as cracks, corrosion, leaks, and deformation) of the spherical tank body. 6.1.2 In addition to the items listed in 8.3.2 of TSG 21-2016, the following shall also be included in the macroscopic inspection: a) Structural inspection: the arrangement and type of the support angle welds, and the type of support fixation; the structural form of the tie rods, and the connection between the tie rods and the supports; b) Geometric dimension inspection: the difference between the inner diameter between the two poles of the spherical tank, and the maximum and minimum inner diameters of the equatorial section, as well as the difference between the inner diameter between the two poles of the spherical tank, and the maximum and minimum inner diameters of the equatorial section compared to the designed inner diameter; c) Appearance inspection: the verticality of each support in both radial and circumferential directions, the displacement of each support, and the difference between the foundation settlement and the previous inspection cycle. 6.1.3 Structural and geometric dimension inspection items shall be conducted during the first regular inspection. Subsequent regular inspections shall only focus on the parts subject to fatigue loading, with emphasis on inspecting new defects in problematic are