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CHAPTER 5: MICROBIAL CORROSION, MMT4403: MARINE CORROSION NIK ATIKAH…
CHAPTER 5: MICROBIAL CORROSION
Preventative Maintenance
• Check for and remove water regularly
• Check for microbial contamination
• Visual observation (least reliable)
• Be proactive about using a microbicides
• Testing (most reliable)
Industry Affected
Petrochemical
Ships and marine structures
Power generating
Aircraft fuel systems
Waste water facilities
Process industries and paper mills
Water supply and distribution
Major Concerns
Slime formation
Deposit formation
Tubercle formation
Bioconcretions
Minimizing MIC
Routine inspections
Clean environment
Design of the barge
Barrier System
Chemical Treatments Through Green Chemistry
Maintain the Coating System
Dehydration And Clean environment
Consequences
Corrosion
Premature Failure (embrittlement)
Reduced Heat Transfer
Reduced Production
Destruction of Iron Piping
Catastrophic Failure
Corrosion mechanism of MIC
Pitting corrosion of steel resulting from biological activity
Predominant Types of Bacteria
Sulfate-Reducing Bacteria (SRB)
Aerobic Bacteria
Anaerobic Bacteria
Iron-Related Bacteria (IRB)
Low Nutrient Bacteria (LNB)
MMT4403: MARINE CORROSION NIK ATIKAH BINTI NIK LAH (S51411)
