Pilgrim Plant's Service Water Pipe Hole Belzona!

Seabrook

Just like Seabrook's service water problem. This getting relief from the NRC  from the ASME code requirement is going on all over the  place.  

"On February 24, 2014, seawater was observed leaking from Salt Service Water (SSW) pipe spool JF29-8-4, an elbow, located in the Class 3 SSW system downstream of Reactor Building Closed Cooling Water (RBCCW) heat exchanger E-209B. Leakage of approximately 60 drops per-minute (dpm) was found to originate from an approximately 3/8"diameter hole in the extrados of the downstream elbow of the 18" rubber-lined carbon steel (schedule 20, 0.312" nominal wall thickness) pipe spool. Leakage is minimized due to the rubber lining immediately behind the hole remaining intact and blocking flow and the fact that the normal operating pressure for the heat exchanger discharge flow at this location is 2 psig."

The original rubber lining failed, they replace it with the magic Balzona epoxy...then it quickly developed into a hole. They were watching this pipe degradation developing into a hole. They had a opportunity to fix it right in the outage.   

"The lining of this spool was known to be degraded following an internal inspection of the rubber lining in RFO19 in April 2013. Localized Belzona repairs of the lining were implemented on April 25, 2013. The current condition may indicate a failed Belzona repair as some of the RFO19 repairs were made to the elbow ID within a few inches of the current pressure boundary flaw."

Is this the first time a corrosion hole showed up and it was completely unforeseen? Of does this come up all the time and it indicates a global or systemic issue with the carbon steel pipe material where they are indifferent to fix it once right. Pilgrim seems to be saying it happens all the time.

How come they don’t throw us the historic context with blowing out the rubber coating and the Belozona...give us a ten year list of all the localized corrosion or pitting corrosion at the plant with the service water. Have they been responsible or irresponsible with this kind of corrosion in the service water system?

Will they be responsibly with their service water system in the future?

"PNPS has extensive experience with this failure mechanism in the SSW system and it is well understood by PNPS staff."

I feel these rubber coatings could peel off in sheets from the pipes and clog up the emergency cooling water heat exchangers and other components. It already happened at Seabrook.