卧式新建导管架张紧式外加电流阴极保护系统安装方案研究

Installation Scheme of Horizontal New Jacket Tensioned Impressed Current Cathodic Protection System

目的填补卧式新建导管架平台施工技术的空白,同时解决张紧式ICCP系统在卧式新建导管架平台的工程应用问题。方法以张紧式ICCP系统在某卧式新建导管架的首次工程应用为背景,对张紧式ICCP复合缆-电极系统在该导管架上的陆上安装、导管架运输、海上安装等环节开展方案研究,设计出适用于卧式新建导管架张紧式ICCP系统的安装方案。结果为了保证卧式建造导管架张紧式ICCP系统的可靠安装,设计采用滑索牵引方法,并对复合缆-电极系统海上安装期的自存工况进行校核,可保障张紧式ICCP复合缆-电极系统的安全和顺利安装。结论该套张紧式ICCP安装方案不仅实现了张紧式ICCP在卧式新建导管架的首次工程应用,也为后续新建导管架张紧式ICCP系统的设计与安装提供了参考。

The work aims to fill the gap in the construction technology of horizontal new jacket platform and solve the engineering application problem of tensioned ICCP system in horizontal new jacket platform.Based on the first engineering application of tensioned ICCP system in a horizontal new jacket,the onshore installation,jacket transportation and offshore installation of the tensioned ICCP composite cable-electrode system on the jacket were studied,and the installation scheme suitable for the horizontal new jacket tensioned ICCP system was designed.In order to ensure the reliable installation of the horizontal construction jacket tensioned ICCP system,the zipline traction method was used for the design and the self-storage working conditions of the composite cable-electrode system during the offshore installation period were checked,which could ensure the safe and smooth installation of the tensioned ICCP composite cable-electrode system.This set of tensioned ICCP installation scheme not only realizes the first engineering application of tensioned ICCP in horizontal new jacket,but also provides reference for the design and installation of subsequent new jacket tensioned ICCP system.