T/CSCP T/CSCP0007-2022 Active Group standards

T/CSCP T/CSCP0007-2022 The specification for anti-corrosion technology of the steel shell outer surface of a submerged tube tunnel

Publish Date: 2022-10-25 Implement Date: 2023-01-01 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/CSCP T/CSCP0007-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: General standards for shipbuilding and marine structures

Publish Date: 2022-10-25

Implement Date: 2023-01-01

Scope

Scope: This standard mainly stipulates the coating and cathodic protection requirements for the outer surface of immersed steel shells. This standard applies to the anti-corrosion design, construction, and acceptance of marine engineering steel structures such as immersed steel shells fully submerged in seawater or buried in seabed mud and riprap layers; Main technical contents: Domestic immersed steel structures are mainly concrete structures. The fully steel structure of the immersed steel shell of the Shenzhen-Zhongshan Channel immersed tunnel is the first example of domestic immersed steel tunnels, and there is no relevant research experience on the anti-corrosion of immersed steel shells in China. Anti-corrosion standards can only refer to the relevant standards of seaport engineering or seabed oil extraction devices. These include: "Technical Specifications for Anti-Corrosion of Steel Structures in Seaport Engineering" (JTS 153-3-2007), "Galvanic Anode CP in Seawater and Saline Mud" (BS EN 12496-2013), "Cathodic Protection of Harbor Installation" (ISO 13174-2012), "General Principles of Cathodic Protection in Seawater" (ISO 12473-2017), and "Cathodic Protection Design" (DNVGL-RP-B401-2017). This standard, taking into account the particularities of the immersed steel shell structure and the burying environment of the medium, mainly stipulates the coating and cathodic protection requirements for the outer surface of immersed steel shells, clarifies and refines the manufacturing, installation, and inspection regulations of anti-corrosion materials, and stipulates the monitoring, evaluation, and management of the lifespan durability of anti-corrosion. This standard applies to the anti-corrosion requirements of underwater metal structures fully submerged in seawater or buried in seabed mud and riprap layers, such as the shells of immersed steel tunnels, seabed oil extraction trees, pipe manifolds, and water supply pipelines. For the safety, labor protection, and en