Reply To: ACC Leak/Performance Issue

Chris Nannemann

Sorry for the confusion. The ACC inlet header, not heater… I mean the point at which the steam enters the ACC tube bundles.

Sounds like your steam pH is kept in a good range. We also operate AVT with ammonia only, and have found keeping the steam pH above 9.8 minimizes the 2 pt FAC in the STG exhaust duct and ACC inlet duct.

We also had the same issue that Chris Karch discussed with the hogger isolation valve.

Good luck sir,