Cathodic Protection Presentation on Cathodic Protection System at

Cathodic Protection Presentation on Cathodic Protection System, at IOCL KBPL Kandla. Dt. 19. 04. 2006 By Corrosion Matters Hyderabad An Advisory services company.

Welcome

CORROSION “The deterioration of a material, usually a metal, that results from a reaction with its environment. ”

TYPICAL CORROSION CELL

FORMS OF CORROSION GENERAL LOCALIZED GALVANIC ENVIRONMENTAL VELOCITY EFFECT INTERGRANULAR CRACKING DEALLOYING FRETTING HIGHTEMPERATURE

SOME VARIABLES IN THE CORROSION CONTROL PROCESS § § § p. H OXYGEN RESISTIVITY TEMPERATURE COATING PROPERTIES ELECTROLYTE MOISTURE CONTENT § § § ANODE MATERIAL ANODE LOCATION ANODE SIZE ANODE SHAPE STRUCTURE MATERIAL § BACTERIA § OTHER MINERALS IN ELECTROLYTE

CORROSION CONTROL MEASURES § MATERIALS SELECTION § DESIGN CONSIDERATIONS § PROTECTIVE COATINGS AND LININGS § CATHODIC PROTECTION § INHIBITORS

BASIC CATHODIC PROTECTION

BASIC CATHODIC PROTECTION II

SOME CP DESIGN CONSIDERATIONS § § § ELECTROLYTE RESISTIVITY SYSTEM LIFE REQUIREMENTS COATING EFFICIENCY CURRENT REQUIRED FOR PROTECTION ECONOMIC FACTORS PHYSICAL CONFIGURATION OF STRUCTURE § MATERIALS USED IN STRUCTURE. § ANODE CHARACTERISTICS

CP CONSTRUCTION CONSIDERATIONS § PREPARATION OF METAL SURFACE FOR § § COATING PROPER SELECTION AND APPLICATION OF COATING PROCUREMENT OF CP EQUIPMENT MEETING SPECIFICATIONS SUPERVISION OF INSTALLATION BY QUALIFIED PERSONNEL ENERGIZING, ADJUSTMENT, AND TESTING BY QUALIFIED PERSONNEL

MAINTENANCE AND REPAIR CONSIDERATIONS § WEEKLY RECTIFIER READINGS RECORDED § § § AND SENT TO DISTRICT CP SPECIALIST FOR REVIEW ANNUAL PROTECTIVE POTENTIAL SURVEY PERFORMED BY QUALIFIED PERSONNEL NECESSARY SYSTEM ADJUSTMENTS MADE BY QUALIFIED PERSONNEL NECESSARY REPAIRS MADE AS SOON AS POSSIBLE AND RETEST IF NECESSARY

SUMMARY § THERE ARE MANY FORMS AND MECHANISMS THAT CAUSE CORROSION. § PROPER CORROSION CONTROL SAVES MONEY, AND IMPROVES OPERABILITY AND SAFETY AND PROTECTS THE ENVIRONMENT. § CATHODIC PROTECTION IS A PROVEN EFFECTIVE METHOD OF CORROSION CONTROL. § CORROSION CONTROL IS COMPLEX, REQUIRING SPECIAL EXPERTISE FOR SUCCESSFUL DESIGN, CONSTRUCTION, AND MAINTENANCE

Sketch for CP System

CP System for Existing Buried Lines

CP Station for Pipelines

Anode Junction Box

Deepwell Anode Groundbed

Indoor Type Rectifier

Outdoor Type Rectifier

Hi Silicon Chromium Anodes

Titanium Rod Type Anode

Sacrificial Anode - Mg

Mg. Anodes with tail cables

Bullet Tanks CP System

Measurement of Potentials

Railcrossings CP System

Survey for Stray current CP

Graphical presentation of Data

Pourbix Diagram for Corrosion Phenomenon

Temporary System for Current Requirement

End. Thank You We also make Electro Chlorination Systems