Title: Analysis of Variance Estimation of Degradation Rate of Coated A36 Steel Pipelines in Environmental Risky Condition
Authors: Bani, S. L.
Volume: 9
Issue: 3
Pages: 1-6
Publication Date: 2025/03/28
Abstract:
Petroleum is a major source of government revenue in Nigeria. The transportation medium of this fundamental source of revenue is through pipelines. The design, installation and sustainability of these infrastructure has consumed large amount of money in dollars from the federation, yet incessant failure of pipelines continues to showcase, majorly due to degradation. The aim of this study is to estimate degradation effects on coated A36 steel pipelines use for transportation of oil and gas in high risky environmental condition. Samples of A36 steel labelled in sample identity delivered to the laboratory for tests. The specimens were segmented into coated and uncoated. The uncoated, labelled A was regarded as the control, while the other three sets labelled B, C, and D were coated with different materials. The samples suspended in hydrogen tetraoxosulphate (vi) acid of varying PH values were observed at every 144 hours for a total of 720 hours and the rate of degradation at each instant was estimated based on mass loss principle. Experimental data were analyzed with analysis of variance at 95% level of confidence using Minitab software. At the end of 720 hours, the degradation rate of the control specimen was 0.706mmpy, while that of the uncontrol was: B 0.055mmpy; C 0.04051mmpy; and D 0.043mmpy. The degradation rate of the samples investigated show higher value for the control (uncoated A) relative to the coated B, C, and D. This show that A36 steel has high rate of degradation and should be coated, especially when use in high risk environment.