Monday, December 8, 2008

Jim Chmilar comments

Richard, IF you do not agree with the “document as is” then I do not understand how you can vote to re-affirm?

I, myself believe the document needs to be improved TODAY and will be voting to not re-affirm it, because it needs additional information on measurement techniques and that does not depend on the state of SP0169.

The present draft version of the revisions to SP0169 (which is still in TG 360 committee draft stage as everyone knows) I believe does expand the criteria to include the new one that some are proposing, ie a potential valve of –850 mV without consideration or correction for IR drop. Please read all of section 6.2.3.1 which includes a listing of FOUR criteria in 6.2.3.1.1 to 6.2.3.1.4 and in particular 6.2.3.1.3 which is proposed to say “Criteria that have been shown to successfully control corrosion on piping systems can continue to be used on those piping systems” and 6.2.3.1.4 “Other criteria that can be demonstrated to achieve the corrosion control objectives of the operator.” Do these two criteria not allow all those who have been using 850 ON without any correction, or 300 Millivolt shift, or E log I to be in-compliance with the standard?? No need to answer this now, I am sure I will be hearing it when the SP0169 ballot comes out.



It is time for well wishes and hope everybody enjoys the coming Christmas Season.

Cheers

Jim Chmilar

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