Top-of-Line corrosion in gas lines confirmed by condensation analysis

07/12/1999
Click here to enlarge imageExperience in the Tunu field, Kalimantan (Borneo), as well as published case histories show that top-of-line corrosion (TLC) results from water condensation in wet-gas pipelines when the flow regime is wavy-stratified flow.Corrosion can take place in both uphill and downhill pipe portions. Click here to enlarge imageEvaluating the condensation rate in a wet-gas line during design, considering the coldest environmental conditions (unburied pipe sections, upheaval buckling, or non concrete-coated field joints in contact with cold river water, sea water, or cold soil during winter), can predict potential TLC.A heat-insulation coating or thick anticorrosion pipe ...
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