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The Latest Developments on Cathodic Protection Technologies in China

The progress of science and technology, and the large-scale construction of infrastructures, not only bring about challenges to cathodic protection (CP), but also provide new opportunities for CP technologies. Challenges and opportunities promote the development of the CP technologies. In recent years, CP technology has achieved great development particularly in the following four aspects: first, numerical simulation calculation technology of cathodic protection, which has made remarkable achievements in theoretical research and practical application; second, data remote monitoring technology of cathodic protection, which has improved the management level of cathodic protection system by combining wireless transmission system and GPRS network; third, great progress has been made in the aspects of AC and DC stray current corrosion mechanism, evaluation method and elimination technology; fourth, the development of photocathodic protection technology.

Product Number: MECC23-19994-SG
Author: Yanxia Du; Feng Gu; Te Ke; Zitao Jiang
Publication Date: 2023
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Cathodic protection (CP) has been developed greatly both in the application and advanced technologies in recent years. Firstly, the numerical simulation and optimization design technology has been developed rapidly by combining advanced analysis & measuring techniques. Secondly, the application of CP probe monitoring and wireless transmission technology improves the level of CP maintenance greatly.
Simultaneously, with rapid development of oil & gas pipelines, high voltage grid and urban rails, AC and DC stray current interferences are becoming more severe, and present new challenges to the traditional CP technologies. In solving these problems, corrosion theory, evaluation system and mitigation technology of AC & DC stray current interference have been developed. Fourthly, a new cathodic protection—photoproduction cathodic protection attracted attention in recent years and some research work on performance of semiconductor has been explored. The latest progress on the above CP technologies is introduced and the development trends are predicted in this paper.

Cathodic protection (CP) has been developed greatly both in the application and advanced technologies in recent years. Firstly, the numerical simulation and optimization design technology has been developed rapidly by combining advanced analysis & measuring techniques. Secondly, the application of CP probe monitoring and wireless transmission technology improves the level of CP maintenance greatly.
Simultaneously, with rapid development of oil & gas pipelines, high voltage grid and urban rails, AC and DC stray current interferences are becoming more severe, and present new challenges to the traditional CP technologies. In solving these problems, corrosion theory, evaluation system and mitigation technology of AC & DC stray current interference have been developed. Fourthly, a new cathodic protection—photoproduction cathodic protection attracted attention in recent years and some research work on performance of semiconductor has been explored. The latest progress on the above CP technologies is introduced and the development trends are predicted in this paper.