MV8006 - MARINE CORROSION AND PREVENTION (Syllabus) 2017-regulation Anna University

MV8006

MARINE CORROSION AND PREVENTION

 LPTC

3003

OBJECTIVE:
• To impart knowledge on the Type of corrosion and how this is being controlled in marine environment

UNIT I

INTRODUCTION

9

Cathodic Protection – Sacrificial anodes protection – Impressed current system protection – Bimetallic corrosion – Design faults causing corrosion – corrosion of metals in sea water, metallic corrosion.

UNIT II

HULL PLATE PREPARATION

9

Plate preparation during building and repair periods -Atmospheric corrosion Mill scale – flame cleaning – Acid Pickling – Blast cleaning – causes of paint failure – shipboard preparations for painting – power wire brushing – power discing – air hammer – high pressure water blasting – sand blasting shot blasting


UNIT III

MODERN PAINT TYPES

9

Basic composition of paint Albyd – bitumen or pitch – chlorinated rubber – coaltar epoxy – Epoxy – oleoresinous – phenolic – polyurethane – primers – vinyl – self polrshing copolymers – shipboard paint systems – underwater AF paints – boot top anti corrosive paints – super structure paints.

UNIT IV

CORROSION IN BOILER

9

Atoms & Ions, Ph value electrochemical corrosion, Direct chemical attack – Electro chemical attack – reason – remedial measures. Effect of salts & Grease in feed water. Effect of corrosion while boiler not in service – preservation to avoid corrosion. CORROSION IN MARINE DIESEL ENGINES: Corrosive wear of cylinder liners – Reasons and remedies – corrosion of Main Engine Jacket cooling spaces – Reasons and remedies – corrosion in bearings.

UNIT V

CORROSION AND ITS PREVENTION

9

Mechanism of corrosion – Chemical corrosion – Electro chemical corrosion – Anomic & cathodic protection – forms of metallic coatings – anodizing – phosphating.

TOTAL : 45 PERIODS

OUTCOMES:
• Causes of corrosion
• Method of prevention during operation and during construction
• Anti-corrosive paints
• Corrosion in BOILERS and IC ENGINES

TEXT BOOKS:
1. Lavery, H.I.,”Shipboard operations” Institute of Marine Engineers Publication, 1990
2. Schweitzer, ‘ Fundamentals of Corrosion”,1st Ed. Taylor & Francis, Indian Reprint 2012 (Yesdee Publishing Pvt. Ltd.)
3. M.E.P., “Corrosion For Marine & Offshore Engineers ”, Marine Engineering Practice, Vol.02,Part 11, IMarEST, London
4. Francis Laurence LaQue , “ Marine corrosion: causes and prevention”, 1st Ed., Wiley, 1975
5. Claire Hellio, Diego M. Yebra, Pinturas Hempel S.A., “Advances in Marine Antifouling Coatings and Technologies”, Woodhead Publishing, 2009

REFERENCES:
1. Pierre R. Roberge, “Corrosion Engineering Principles and Practice”, 1st Ed.,McGraw- Hill, 2008
2. Zaki Ahmad, “Principles of Corrosion Engineering and Corrosion Control”,1st Ed. Elsevier Ltd.,2006

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