EL3009 CATHODIC PROTECTION ENGINEERING SYLLABUS | ANNA UNIVERSITY BTECH CHEMICAL AND ELECTROCHEMICAL ENGINEERING 8TH SEMESTER SYLLABUS REGULATION 2008 2011 2012-2013 BELOW IS THE ANNA UNIVERSITY 8TH SEMESTER B.TECH CHEMICAL AND ELECTROCHEMICAL ENGINEERING DEPARTMENT SYLLABUS, TEXTBOOKS, REFERENCE BOOKS,EXAM PORTIONS,QUESTION BANK,PREVIOUS YEAR QUESTION PAPERS,MODEL QUESTION PAPERS, CLASS NOTES, IMPORTANT 2 MARKS, 8 MARKS, 16 MARKS TOPICS. IT IS APPLICABLE FOR ALL STUDENTS ADMITTED IN THE YEAR 2011 2012-2013 (ANNA UNIVERSITY CHENNAI,TRICHY,MADURAI, TIRUNELVELI,COIMBATORE), 2008 REGULATION OF ANNA UNIVERSITY CHENNAI AND STUDENTS ADMITTED IN ANNA UNIVERSITY CHENNAI DURING 2009
EL3009 CATHODIC PROTECTION ENGINEERING L T P C
3 0 0 3
UNIT I BASIS OF CATHODIC PROTECTION 9
Basis of cathodic protection - working of cathodic protection system - factors leading to
corrosion of underground metallic structures - electrical basis of cathodic protection -
electrochemical theory of cathodic protection - definition of cathodic protection using Evans
diagram and Pourbiax diagram, derivation of protective potential for steel - anodic
polarization
UNIT II SACRIFICIAL ANODE SYSTEM 9
Cathodic protection system - components of galvanic systems - galvanic anodes - life,
current output - magnesium, aluminium and zinc : electrochemical properties - composition,
fields of application :backfills for sacrificial anodes - calculation of current output of
sacrificial anodes - calculation of number of anodes - advantages and disadvantages of
sacrificial anode system.
UNIT III IMPRESSED CURRENT SYSTEM 9
Impressed current system - power source, cables, rectifier - components of rectifier, types
of ground bed - required properties of impressed current anode - major impressed current
anodes – high silicon, cast iron, scrap steel, graphite anodes, platinised titanium, platinised
Niobium, platinised tantalum, metal oxide anode - lead alloy anode - properties -
composition, consumption, fields of application. Backfills for impressed current anodes.
67
UNIT IV FIELD SURVEY 9
Design parameters in cathodic protection - current requirements - measurements in
cathodic protection - field data : soil resistivity measurement - pipe to soil potential data -
factors affecting pipe to soil potential - potential survey, pH determination - redox potential
measurement, coating resistance, current drainage survey. Measurement of current flow.
UNIT V DESIGNING OF CP SYSTEM 9
Stray current corrosion - sources of stay current - cathodic protection interferences –
examples of interferences - design charts - ground bed design with illustrative examples -
designing of sacrificial anode system - designing of impressed current system - designing of
cathodic protection to ship hull - calculations in cathodic protection design.
TOTAL : 45 PERIODS
TEXT BOOKS
1. Zaki Ahmad, “Principles of Corrosion Engineering and Corrosion Control”, Butterworth-
Heinemann /IChemE Series, Ist edition, 2006.
2. Marshall E.Parker, Edwar G.Peatitle, “Pipeline Corrosion and Cathodic Protection” Gulf
Publishing Company, 3rd edition, 1984.
REFERENCES
1. John H. Morgan, “Cathodic Protection”, NACE international, 2nd edition, 1987.
2. Peabody A.N and Blanchetti R.L. , “Control of Pipeline Corrosion”, NACE Int., 2nddition,
Texas: Houstaon, USA, 2001.
EL3009 CATHODIC PROTECTION ENGINEERING L T P C
3 0 0 3
UNIT I BASIS OF CATHODIC PROTECTION 9
Basis of cathodic protection - working of cathodic protection system - factors leading to
corrosion of underground metallic structures - electrical basis of cathodic protection -
electrochemical theory of cathodic protection - definition of cathodic protection using Evans
diagram and Pourbiax diagram, derivation of protective potential for steel - anodic
polarization
UNIT II SACRIFICIAL ANODE SYSTEM 9
Cathodic protection system - components of galvanic systems - galvanic anodes - life,
current output - magnesium, aluminium and zinc : electrochemical properties - composition,
fields of application :backfills for sacrificial anodes - calculation of current output of
sacrificial anodes - calculation of number of anodes - advantages and disadvantages of
sacrificial anode system.
UNIT III IMPRESSED CURRENT SYSTEM 9
Impressed current system - power source, cables, rectifier - components of rectifier, types
of ground bed - required properties of impressed current anode - major impressed current
anodes – high silicon, cast iron, scrap steel, graphite anodes, platinised titanium, platinised
Niobium, platinised tantalum, metal oxide anode - lead alloy anode - properties -
composition, consumption, fields of application. Backfills for impressed current anodes.
67
UNIT IV FIELD SURVEY 9
Design parameters in cathodic protection - current requirements - measurements in
cathodic protection - field data : soil resistivity measurement - pipe to soil potential data -
factors affecting pipe to soil potential - potential survey, pH determination - redox potential
measurement, coating resistance, current drainage survey. Measurement of current flow.
UNIT V DESIGNING OF CP SYSTEM 9
Stray current corrosion - sources of stay current - cathodic protection interferences –
examples of interferences - design charts - ground bed design with illustrative examples -
designing of sacrificial anode system - designing of impressed current system - designing of
cathodic protection to ship hull - calculations in cathodic protection design.
TOTAL : 45 PERIODS
TEXT BOOKS
1. Zaki Ahmad, “Principles of Corrosion Engineering and Corrosion Control”, Butterworth-
Heinemann /IChemE Series, Ist edition, 2006.
2. Marshall E.Parker, Edwar G.Peatitle, “Pipeline Corrosion and Cathodic Protection” Gulf
Publishing Company, 3rd edition, 1984.
REFERENCES
1. John H. Morgan, “Cathodic Protection”, NACE international, 2nd edition, 1987.
2. Peabody A.N and Blanchetti R.L. , “Control of Pipeline Corrosion”, NACE Int., 2nddition,
Texas: Houstaon, USA, 2001.
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