Open Journal of Marine Science, 2020, 10, 16-31 https://www.scirp.org/journal/ojms ISSN Online: 2161-7392 ISSN Print: 2161-7384 DOI: 10.4236/ojms.2020.101002 Dec. 19, 2019 16 Open Journal of Marine Science Analysis of the Effectiveness and Efficiency of the VA Solution on Offshore Pipelines and Ship Materials Samson Nitonye, Prince Ugboga Department of Marine Engineering, Rivers State University, Port Harcourt, Nigeria Abstract The analysis of the effectiveness and efficiency of Vernomia amydalina (VA) solution as an inhibitor on offshore pipeline and Ship materials (Steel) was carried out with the preparation of the specimen and the VA solution. The specimens were kept in a workable state and the VA Solution (inhibitor) pre- pared from 1200 g of bitter leaf was plucked, weighed and crushed separately. 600 cl of water was added to each of the crushed leaves. The mixture was put in a filter cloth and squeezed with hand to filter out the active concentration ingredients responsible for corrosion inhibition, which produced a 2 M con- centration of VA extract solution. After the experiment was carried out the specimen was air-dried and weighed to determine the corrosion rate and weight loss. This was followed by the determination of the inhibitor efficiency at the different hours and at different percentage/concentration of the VA solution on the specimen. Results were obtained for different hours and at different percentage (0%, 5%, 10%, 15%, 20% and 25% inhibitor)/concentration of the VA solution and graphs plotted. It was observed that at the first week of exposure to corrosive medium there was a substantial reduction in weight of coupons but over the next three weeks there was a gradual decline in weight loss and the corrosion rate reduced evenly. It can be said that the per- centage of inhibitor to corrosive medium is insufficient. From the graphs plotted, the inhibitor efficiency is considered high when the concentration of the VA solution is high, which implies a right percentage of inhibitor needs to be administered to obtain good efficiency of the solution. Hence as the weeks go by it was clear that the inhibitor was gradually losing its effectiveness. This means that inhibitors need to be added at regular intervals to sustain the ef- fectiveness of the inhibitor. It is also of vital interest to apply the right con- centration of inhibitor since CR increases at high concentrations and temper- ature. This process did not take into consideration moving water. How to cite this paper: Nitonye, S. and Ugboga, P. (2020) Analysis of the Effec- tiveness and Efficiency of the VA Solution on Offshore Pipelines and Ship Materials. Open Journal of Marine Science, 10, 16-31. https://doi.org/10.4236/ojms.2020.101002 Received: October 9, 2019 Accepted: December 16, 2019 Published: December 19, 2019 Copyright © 2020 by author(s) and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access