Transcription of CATHODIC PROTECTION DESIGN
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CATHODIC PROTECTION DESIGNSTRUCTUREM etal, DESIGN Life, Dimensions, Coatings, OtherCOST AND IMPLEMENTATIONLOCATIONE nvironmental Conditions, Other StructuresANODE AND HARDWARE SELECTIONC urrent Output, DESIGN Life, TYPEI mpressed Current, Sacrificial CURRENT DEMANDI nitial, Mean, CRITERIAP otential for CATHODIC Protectionfrom Swain Classnotes (1996) 2 Table of Contents Introduction .. 3 Structure .. 3 Location .. 3 CP Criteria .. 4 Potential Values .. 4 300 mV Shift .. 5 100 mV Shift .. 5 E-log-I Curve .. 6 Anodic Current Discharge Points .. 6 CATHODIC PROTECTION Current Demand .. 6 Recommended Practice RP B401, Det Norske Veritas .. 6 Uncoated Steel .. 7 Coated Steel ..7 pipeline 9 Concrete.
5.1.3 Pipeline Coatings The coating breakdown factors as shown in table 5.2 apply equally to both buried and non-buried pipelines. It is assumed that coatings and field joint systems have been chosen to be compatible with the maximum design temperature of the pipeline.
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