reliability assessment of offshore jacket structures in niger delta
reliability assessment of offshore jacket structures in niger delta
reliability assessment of offshore jacket structures in niger delta
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M.A. Salau, D.E. Esezobor, M. F. Omotoso/Petroleum & Coal 53 (4) 291-301, 2011 300Table 1 Jacket Member Wall Thickness Corrosion LossRow ARow BRow1Row2Plan @ (-) 7.0mPlan @ (-) 18.3mPlan @(-) 32.0mJacketLegsIDMemberType and ElevationThickness(mm)1985UTThickness(mm)2008ThicknessReduction(%)20081DA Horizontal Brac<strong>in</strong>g EL (-) 1.5m 9.525 9.501 0.2623DA Horizontal Brac<strong>in</strong>g EL (-) 1.5m 9.525 9.45 0.7875DA Diagonal Brace EL (-) 4.0m to (-) 7.0m 9.525 8.1 14.9615BA Diagonal Brace EL (-) 7.0m to (-) 18.3m 12.7 10.5 17.3235AA Diagonal Brace EL (-) 18.3m to (-) 32.0m 12.7 12.40 2.3625CA Diagonal Brace EL (-) 18.3m to (-) 32.0m 12.7 11.90 6.2991DA Diagonal Brace EL (-) 18.3m to (-) 32.0m 12.7 12.4 2.363DA Diagonal Brace EL (-) 18.3m to (-) 32.0m 12.7 11.9 6.301DB Diagonal Brace EL (-) 4.0m to (-) 7.0m 9.525 9.6* -3DB Diagonal Brace EL (-) 7.0m to (-) 18.3m 12.7 12.7 0.003MB Diagonal Brace EL (-) 7.0m to (-) 18.3m 9.525 9.6* -53B Diagonal Brace EL (-) 18.3m to (-) 32.0m 12.7 11.6 8.6652B Diagonal Brace EL (-) 18.3m to (-) 32.0m 12.7 11.9 6.3051B Diagonal Brace EL (-) 18.3m to (-) 32.0m 12.7 12.5 1.5751D1 Diagonal Brace EL (-) 4.0m to (-) 7.0m 9.525 9.4 1.313D1 Diagonal Brace EL (-) 7.0m to (-) 18.3m 9.525 9.1 4.461D2 Diagonal Brace EL (-) 4.0m to (-) 7.0m 9.525 9.1 4.463D2 Diagonal Brace EL (-) 18.3m to (-) 32.0m 9.525 8.9 6.565B2 Diagonal Brace EL (-) 18.3m to (-) 32.0m 12.7 12.5 1.572MB Horizontal Brace EL (-) 7.0m 9.525 9.2 3.4122MD Diagonal Member EL (-) 7.0m 9.525 9.3 2.362M2 Horizontal Brace EL (-) 7.0m 9.525 9.3 2.362MH Diagonal Brace EL (-) 7.0m 9.525 9.3 2.362ME Diagonal Brace EL (-) 7.0m 9.525 9.2 3.412MA Horizontal Brace EL (-) 7.0m 9.525 9.2 3.412MF Diagonal Brace EL (-) 7.0m 9.525 9.0 5.512M1 Horizontal Brace EL (-) 7.0m 9.525 9.3 2.362MG Horizontal Brace EL (-) 7.0m 9.271 9.1 1.844MD Diagonal Brace EL (-) 18.3m 9.525 9.1 4.464ME Diagonal Brace EL (-) 18.3m 9.525 9.0 5.5124MC Diagonal Brace EL (-) 18.3m 9.525 9.1 4.464MG Diagonal Brace EL (-) 18.3m 9.525 8.6 9.714M2 Horizontal Brace EL (-) 18.3m 9.525 9.1 5.5124MA Horizontal Brace EL (-) 18.3m 9.525 9.0 9.7114M1 Horizontal Brace EL (-) 18.3m 9.525 8.6 4.4624MB Horizontal Brace EL (-) 18.3m 9.525 9.1 1.8444MF Horizontal Brace EL (-) 18.3m 9.271 9.1 1.846M2 Horizontal Brace EL (-) 32.0m 9.525 8.400 11.8116MA Horizontal Brace EL (-) 32.0m 12.700 12.300 3.1506MD Horizontal Brace EL (-) 32.0m 9.525 8.900 6.5626MC Horizontal Brace EL (-) 32.0m 9.525 9.1 4.4626ME Horizontal Brace EL (-) 32.0m 9.525 9.0 5.5126M1 Horizontal Brace EL (-) 32.0m 9.525 9.4 1.3126MB Horizontal Brace EL (-) 32.0m 12.700 12.300 3.1504MD Jacket Leg – 1 19.1 18.11 5.184ME Jacket Leg – 2 19.1 18.25 4.454MC Jacket Leg – 3 19.1 18.52 3.044MG Jacket Leg – 4 19.1 18.65 2.36
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