Cable marker posts should be installed directly above the pipeline. When using cable marker posts as corner piles, they should be installed directly above the midpoint of the corner section. When there are no installation conditions above the pipeline, they can be installed in a relatively nearby roadside green belt, and a schematic diagram of the pipe pile should be marked on the cable marker post.

Cable marker posts should not be installed on fully enclosed and restricted roads, and the installation distance of cable marker posts should be 100m. In flat terrain with minimal visual interference and smooth roads, the installation distance of cable marker posts can be greater than 100m. In special areas, the laying of pipeline marker posts should be systematically carried out according to specific laying standards

Cable marker posts are cable routing marker posts buried along natural gas high-pressure pipelines, mainly made of plastic steel, glass fiber reinforced plastic composite material, painted with yellow markings. To serve as a warning, they are marked with the "Electronic Inspection Information Button for Gas Pipeline Gas Telephone Pipeline Pile Number and Pipeline Route", which facilitates line patrol and repair personnel to quickly locate the pipeline position and win the opportunity for repair. According to Article 36 of the Urban Gas Management Regulations, Unauthorized removal and movement of cable markers buried on high-pressure natural gas pipelines is an illegal act.

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