The Experts below are selected from a list of 8502 Experts worldwide ranked by ideXlab platform
Fan Huan - One of the best experts on this subject based on the ideXlab platform.
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Residual Life Prediction Method of Corroded Buried Oil Pipeline
Pressure vessel Technology, 2009Co-Authors: Fan HuanAbstract:After researching on buried oil pipeline′s operation feature,this paper analysed the internal pressure along oil pipeline,and the limit size Model of Corrosion defects was established based upon ASME-B31G.According to the Corrosion failure characteristics of buried oil pipeline,electrochemical Corrosion Rate of the flaw was derived.A new method of the residual life prediction of buried pipeline was finally developed based on the Corrosion Rate Model and limit size Model of Corrosion defects.
Shiming Shen - One of the best experts on this subject based on the ideXlab platform.
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residual life prediction of corroded pipeline based on electrochemical Model
18th International Conference on Nuclear Engineering: Volume 5, 2010Co-Authors: Wenhe Wang, Shiming ShenAbstract:According to the Corrosion failure characteristics of buried oil and gas pipelines, electrochemical Corrosion Rates of the local Corrosion and pitting Corrosion flaws were derived by Faraday’s laws, and the limit size Model of Corrosion defects was established based upon ASME-B31G criteria. A new method of the residual life prediction for buried pipelines was finally developed based on the Corrosion Rate Model and limit size Model of Corrosion defects, and the prediction method was validated with an example and the results showed that the method is reliable for pipelines with corroded defects.Copyright © 2010 by ASME
Patuan Alfon - One of the best experts on this subject based on the ideXlab platform.
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application of hoop stress limit state and predicted Corrosion Rate in underground gas transmission pipeline inspection plan
Applied Mechanics and Materials, 2013Co-Authors: Patuan Alfon, Johny Wahyuadi Soedarsono, Dedi PriadiAbstract:In the transmission pipeline system, decreasing the integrity of the pipe is generally caused by Corrosion. Limit state of hoop stress can be applied to determine whether the pipe material is still safe for utilizing below its yield stress. Defining the Corrosion Rate allowable will be essential in formulating risk of Corrosion in the pipeline system. Using an external Corrosion Rate Model geneRated by soil, the prediction of Corrosion Rate in every year service life of material will determine the frequency of inspection by adjusting the threshold category. The predicted Corrosion Rate in every year is as a function of soil resistivity by a factor of coating breakdown and cathodic protection (CP) remaining life. A modified scheme, so called the Inspection-Maintenance-Repair stRategy, is an effective method to increase the effectiveness of inspections. The reduction in risk of Corrosion is able to extend the inspection plan for several years.
Wenhe Wang - One of the best experts on this subject based on the ideXlab platform.
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residual life prediction of corroded pipeline based on electrochemical Model
18th International Conference on Nuclear Engineering: Volume 5, 2010Co-Authors: Wenhe Wang, Shiming ShenAbstract:According to the Corrosion failure characteristics of buried oil and gas pipelines, electrochemical Corrosion Rates of the local Corrosion and pitting Corrosion flaws were derived by Faraday’s laws, and the limit size Model of Corrosion defects was established based upon ASME-B31G criteria. A new method of the residual life prediction for buried pipelines was finally developed based on the Corrosion Rate Model and limit size Model of Corrosion defects, and the prediction method was validated with an example and the results showed that the method is reliable for pipelines with corroded defects.Copyright © 2010 by ASME
Jose Luis Ramirez Reyes - One of the best experts on this subject based on the ideXlab platform.
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evaluation of water corrosivity using a Corrosion Rate Model for a cooling water system
2005Co-Authors: Alberto Alvarez Gallegos, Susana Silva Martinez, Jose Luis Ramirez ReyesAbstract:The first part of a Corrosion inhibitor Model has been developed to be used in a specific Mexican Power Plant. The Model takes into account the main operational conditions found in the cooling water, such as major corrosive chemical species, a wide pH range, the performance of a commercial Corrosion inhibitor (based on tolyltriazol) and the material of the condenser (admiralty). The objective is to replace the old criteria based on Langelier Saturation and Ryznard Stability Index for a better approach that can suggest a variable inhibitor dosage to achieve a desired mpy value in the cooling water system (e. g. 1 mpy). Five pairs of admiralty coupons were sunk in five different beakers containing synthetic cooling water with an increasing concentration factor (1 to 5) at fixed pH and temperature. The experiment was repeated at different Corrosion inhibitor concentrations, testing three different pH values (6, 7 and 8). Admiralty Corrosion Rates were obtained (from 0.04 to 2.7 mpy) in the laboratory, in the presence and absence of a commercial Corrosion inhibitor, using a jar test and synthetic cooling water. The Corrosion Rates in admiralty were assessed by means of the Linear Polarization Resistance technique. It is demonstRated that, basically admiralty Corrosion Rate is a function of water chemistry, pH and Corrosion inhibitor concentration. Experimental data can be fitted to an empirical equation to predict the performance of a Corrosion inhibitor versus inhibitor dosage. The Model runs in a personal computer allows the prediction of information related to the treatment cost to achieve a desired mpy value in the cooling water system.
