Vogtle 1/2 - Does anyone have Carbon Steel Piping where the header interfaces with the buildings? Do you have corrosion/leak issues with these lines? If yes, what have you done to identify and combat the issue?

Farley

Hatch

Vogtle

Watts Bar - no issues with interface

Sequoyah - Same as WBN

Browns Ferry - Same, no issues with interface

Turkey Point - 

North Anna - Installed, no issues. 

Surry - Same as North Anna

St. Lucie - Carbon Steel, no interface issues. TB is all outdoors. Working on metalized coating. Type of coating system that is blasted on and dual flame and makes a coating that prevents corrosion. 

McGuire - No issues

Brunswick - had an issue. coating was degraded beneath a slab. had to excavate the flooring, was in the worst possible location. 

Recommended internal scoping and inspection to determine risk. Lake water is source.

Oconee -  

Harris - 

Catawba - No issues. 

HB Robinson - No issues. 

VC Summer - yes Carbon steel 

Farley - No issues so far

Hatch - We have such piping interfaces and had one leak in the past 4 years. No known historical failures of this type

Watts Bar - have them installed but have not had issues so far

Sequoia - have them installed but have not had issues so far

Browns Ferry - have them installed but have not had issues so far

North Anna - have them installed but have not had issues so far

Surry - have them installed but have not had issues so far

St. Lucie - have them installed but have not had issues so far. Installing metalized (aluminum) coating to limit exterior corrosion. Will reply to this post with this info

Mcguire - have them installed but have not had issues so far

Brunswick - One issue with pinhole leak due to exterior coating failure, cut out 6 ft section and replaced

Oconee - have them installed but have not had issues so far

Harris - No comment

Catawba - have them installed but have not had issues so far

Robinson - have them installed but have not had issues so far

VC Summer - have them installed but have not had issues so far

Wolf Creek does.  We have cathodic protection on these lines and they were originally externally coated with bitomastic.  We have not had leaks as of yet.