Comments from Paul Nichols

Richard,



Of course you know there is nothing to prevent someone from using -850 mV On now, if the data is available to support that it is effective. SP0169 permits it, it just takes a bit of work, like collecting the data you ask for in your note. A combination of operator data on soil, coating and CP conditions, some ECDA and/or ILI data, plus the previous PRCI study would be sufficient to show if -850 On is effective. I think the same sort of, or substantially similar, data would be required anyway even in a revised SP0169; some data to show that the conditions are appropriate for -850 On and to show that it works.



Regards,

Paul



Paul Nichols

Senior Materials and Corrosion Engineer; Mechanical, Materials and Integrity - East

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