MIC in Utility Systems - TECHT
Microbiologically influenced corrosion (MIC) is a major asset integrity challenge, contributing to 20-40% of internal corrosion failures and imposing significant operational and financial impacts across industry. While MIC is well recognised in oil production facilities, risks within LNG operations are often underestimated, particularly in utility systems such as potable water, firewater, cooling water, and wastewater networks.
This case study examines widespread MIC-related issues within the potable water distribution system of an Australian onshore LNG facility. Microbiological investigations, water quality assessments, and molecular analyses identified MIC-relevant microorganisms throughout the system. Findings indicated that contamination was driven by preventable operational and maintenance deficiencies rather than inherent process conditions.
Targeted interventions, including improved water management practices and corrective maintenance activities, successfully reduced microbial activity and associated corrosion risks. These measures were supported by the development of an organisation-wide MIC Management Strategy, providing a structured framework for risk identification, monitoring, mitigation, and continuous improvement.
The study highlights the importance of considering MIC risks beyond primary process systems and demonstrates how practical, low-complexity interventions can effectively manage microbial corrosion threats within onshore LNG facilities.
This case study examines widespread MIC-related issues within the potable water distribution system of an Australian onshore LNG facility. Microbiological investigations, water quality assessments, and molecular analyses identified MIC-relevant microorganisms throughout the system. Findings indicated that contamination was driven by preventable operational and maintenance deficiencies rather than inherent process conditions.
Targeted interventions, including improved water management practices and corrective maintenance activities, successfully reduced microbial activity and associated corrosion risks. These measures were supported by the development of an organisation-wide MIC Management Strategy, providing a structured framework for risk identification, monitoring, mitigation, and continuous improvement.
The study highlights the importance of considering MIC risks beyond primary process systems and demonstrates how practical, low-complexity interventions can effectively manage microbial corrosion threats within onshore LNG facilities.
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East Perth North Metro Tafe
140 Royal Street, East Perth WA 6004
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MIC in Utility Systems - TECHT
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