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| Design Optimization of ICCP System for Jacket Platform Based on Physical Scale Model |
| Received:June 18, 2014 Revised:July 02, 2014 |
| View Full Text View/Add Comment Download reader |
| DOI：10. 7643 /issn. 1672-9242. 2014. 05. 024 |
| KeyWord:ICCP physical scale model design optimization offshore platform |
| Author | Institution |
| LIU Fu-guo |
Offshore Oil Engineering Co. , Ltd, Tianjin , China |
| ZHANG Guo-qing |
Offshore Oil Engineering Co. , Ltd, Tianjin , China |
| ZHANG Wei |
Qingdao Research Institute for Marine Corrosion, Qingdao , China |
| YIN Peng-fei |
Qingdao Research Institute for Marine Corrosion, Qingdao , China |
| HAN Xiao-chen |
Kunming University of Science and Technology, Kunming , China |
| HAN Bing |
Qingdao Research Institute for Marine Corrosion, Qingdao , China |
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| Abstract: |
| Objective To Study the effects of the change in current unit of the remote auxiliary anode and the spacing between the platform and the auxiliary anode on the distribution and protection of platform potential. Methods Based on the JZ120-1 jacket platform in the Bohai Bay, a 1 : 20 physical scale model was built. At the bottom of the experimental pool, a remote auxiliary anode was placed at a certain distance apart from the scale model. Under a certain protection current, the effects of the spacing between the platform and the auxiliary anode as well as the change in current unit of the remote auxiliary anode on the distribution and protection of platform potential were studied. Results The corrosion control of the whole platform can be realized by a single-seat remote anode. The farther the distance between the auxiliary anode and the scale model, the smaller the platform surface potential diffference, and the more even the potential distribution. The closer the distance between the auxiliary anode and the scale model, the greater the potential difference between one anode unit and four anode units, while the farther the distance, the smaller the potential difference. Comparing with the one unit, the four anode units showed a smaller platform surface potential difference and a more even potential distribution at the same distance. Although the experimental seawater was diluted 20 times by running water, the calcareous sediments and covering were still important factors affecting the potential distribution on the platform surface. Conclusion The current unit amount of the auxiliary anode, the spacing of the platform and the auxiliary anode, and the covering of calcareous sediments were important factors affecting the distribution and protection of the platform surface potential. |
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