TO UPSET ONLINE MONITORING HIGHLIGHTS DETERIORATION IN DESALTER PERFORMANCE & DIRECT LINKAGE TO UPSET OVERHEAD CONDITIONS THE SITUATIONOVERHEAD CONDITIONS 90% of Overhead Corrosion can happen in as little as 10% of the time. Effectively managing desalters and overhead corrosion control programs can be a challenge; the combination of frequent crude changes with significant batch to batch variation make good control difficult. Coupled with process variability and the typical low frequency of measurements, the reality is that good control is difficult to achieve and there is total ignorance about what is happening in the intervening periods between measurements. THE SOLUTION A Gulf Coast Refiner installed the Nalco Champion Online Salt Analyzer (OSA) at the desalted crude outlet of a

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