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For cable aging, it can be slowed down by strict technology and maintenance management.
(1) Reasonable replacement, relocation and modification of optical cable lines
For floods, earthquakes, landslides, frozen soil surges, and severely corrosive soil environments, it is possible to consider direct burial and alteration of the overhead when considering the temperature environment and wind factors; for some severe aging sections, consider replacing fiber optic cables; Through the insulation test indicators of the metal outer sheath of the optical cable and the welding loss of the comparative optical cable, the sealing condition of the joint box is analyzed, and the joint box is modified or replaced in time.
(2) Daily maintenance data collection and comparison guides daily maintenance operations
Daily maintenance data collection includes the name of the cable section, the cable construction year, the core type, the manufacturer, the cable model, the completion test record, the service opening test record, the maintenance test record over the years, and the cable defect history. In the cutover, relocation and construction, try to use the same model or even the same batch of optical cables according to the above daily maintenance data to avoid the phenomenon of fiber mismatch, and also reduce the welding loss.
(3) Establish an early warning mechanism for cable aging
Through the aging phenomenon and causes of the discovered optical cable, an early warning mechanism is established for the maintained optical cable to guide the routine maintenance work.
(4) Laboratory test verification
According to the maintenance situation of the cable maintenance site and the sampling situation, the domestic large-scale manufacturers are actively arranged to conduct laboratory tests on the mechanical properties and environmental performance of the optical cable, determine the aging grade of each test item, and draw corresponding maintenance opinions and construction suggestions accordingly.
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