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An API Recommended Practice (API RP 584), Integrity Operating Windows (IOW) are an essential component of any asset integrity management (AIM) system. IOWs improve predictive accuracy. They facilitate the collection, retention, and analysis of variable data – providing early warnings when a pre-defined process variable’s boundaries are exceeded. This helps to predict and prevent corrosion, increase productivity by allowing for predictive maintenance, and reduce the likelihood of asset failure.