Chevron operates the Tamar and Leviathan deepwater gas production assets offshore Israel. The subsea system consists of high flow rate wells connected to a subsea manifold and through long gathering lines to the production platform. The system is directly tied to the national grid supplying natural gas for electricity production in Israel, Egypt and Jordan. Due to the high criticality of both Tamar and Leviathan assets, a comprehensive Integrity Management plan was created to ensure continuous production. The plan consists of a risk-based matrix for the subsea equipment, pipelines, jackets and controls equipment. The use of the IM plan led the team to discover several issues that could potentially cause a disruption in the gas flow, that could potentially lead to commercial and reputational impact. A case study will be presented to demonstrate the importance of the IM plan in identifying the issue and the remediation plan: UTAs (Umbilical Terminal Assembly) OFL (Optical Flying Lead) receptacle calcification buildup.