中国石油网消息：6月28日获悉，中油海工承建的全球首套纵横双向液压靠船阻尼装置——北美LNG项目A200结构件顺利通过检验，精度成功控制在±0.5毫米以内，达到行业一流水平，标志着企业在高端海工装备制造领域取得又一关键突破，展现了“中国精度”。

China Oil News: On June 28th, it was learned that the world's first longitudinal and transverse two-way hydraulic mooring damping device - the A200 structure component of the North American LNG project - constructed by China Oil Engineering Co., Ltd., has successfully passed the inspection. The accuracy has been successfully controlled within ±0.5 millimeters, reaching the world-class level, marking another key breakthrough for the enterprise in the manufacturing of high-end offshore engineering equipment, and demonstrating "Chinese precision".

这套靠船阻尼装置具有建造精度高、自动化程度高、减载能力强3项突出优势。然而，它的“过人之处”还不止于此。在海工建造领域，精度控制在3毫米至5毫米是国际通用标准，北美LNG项目将标准提升至±0.5毫米——比公交卡还薄。面对严格的精度要求，中油海工采用AT930激光跟踪仪、3D扫描仪等行业顶尖装备，利用3D模型拆解流程，反复推演，以毫米级精度把控消除偏差。

This ship damping device has three outstanding advantages: high construction accuracy, high automation level, and strong load reduction capability. However, its "superiority" does not stop here. In the field of offshore construction, the international standard for precision control is within 3mm to 5mm. The North American LNG project has raised the standard to ±0.5mm - thinner than a bus card. Facing strict precision requirements, China National Offshore Oil Construction adopted industry-leading equipment such as AT930 laser tracker and 3D scanner, and used the 3D model disassembly process to repeatedly simulate and control to eliminate deviations with millimeter-level precision.

从结构预制到机加工环节，技术人员逐一攻克高强度合金钢焊接、大尺寸球面轴承安装、整体调试等核心技术难关。同时，创新性地在阻尼器分段底部加装支撑，并安装两台卧式加工中心进行平面铣削，使机加工时间缩短一半。

From the stage of structural prefabrication to the machining process, the technicians successfully overcame various technical challenges such as the welding of high-strength alloy steel, the installation of large-sized spherical bearings, and the overall debugging. At the same time, they innovatively added supports at the bottom of the damping device segments and installed two horizontal machining centers for planar milling, which reduced the machining time by half.

同时，针对板材厚、焊接量大、易变形等难题，中油海工组织多方专家现场会诊，制定焊接顺序与精度节点，使板材焊接变形平面度控制在2.6毫米以内。这一技术突破也为后续承接国际高端海工项目奠定了技术基础。

Meanwhile, in response to the challenges such as thick plates, large welding volume and easy deformation, China Oil Offshore Engineering organized multiple experts for on-site consultation. They formulated the welding sequence and precision nodes, enabling the deformation plane degree of the plates to be controlled within 2.6 millimeters. This technological breakthrough also laid a technical foundation for subsequent undertaking of international high-end offshore engineering projects.