Operation & Monitoring of Trans-Alaska Pipeline · Alyeska Pipeline Service Company. Operation n...
Transcript of Operation & Monitoring of Trans-Alaska Pipeline · Alyeska Pipeline Service Company. Operation n...
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Operation & Monitoring ofTrans-Alaska Pipeline
Wes TonkinsEngineering Advisor
Alyeska Pipeline Service Company
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Operation
n Operating Gradientsn Minimum Required Pressure Criteria
(MOP)
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Monitoring
n Settlementn Corrosionn Data Analysis
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Monitoring
n Settlement• Curvature Pig
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Monitoring
n Settlement• Curvature Pig• Deformation Pig
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Monitoring
n Settlement• Curvature Pig• Deformation Pig
• Monitoring Rods
• Thermistors
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Monitoring
n Corrosion• Ultrasonic Pig
– Prioritize Digs & Visual Inspection
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Monitoring
n Corrosion• Ultrasonic Pig
– Prioritize Digs & Visual Inspection
• Cathodic Protection (CP) Readings• Corrosion Coupons
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Monitoring
n Data Evaluation• Pressure De-rates (Rstreng)
– Rstreng Analysis of Visual Inspection
• Sleeve to Maintain MOP• Buckling Analysis
– Curvature / Corrosion - SAFE Program
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Summary
n State of the Art monitoring toolscombined with data evaluation byexperienced personnel ensure that theMOP requirements are maintained forall operating scenarios of the Trans-Alaska Pipeline