FGD Reaction Tank Lining PROBLEM Case Studies A South-Central Utility installed limestone SO 2 scrubber systems on their 720 MW units in 1985 and 1987. The Reaction Tank walls and ceilings were originally lined with a thick FRP mat product. This lining started to fail within the first year of operation. The failure mode was delamination between coats and disbondment between the lining and the substrate (carbon steel). The linings on all nine tanks on each unit were failing and the tanks corroding. SOLUTION In November of 1987, after complete removal of the failed material from the walls and in spots on the ceiling, DUROMAR’S HPL 2131, 100% solids, high abrasion resistant product was used to reline one tank. We used a special DUROMAR designed “Grout Pump” system which allows up to 80 mils

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