Used 10,000 gallon Pfaudler horizontal glass lined storage tank. Rated for 30 PSI @ 300 deg F. internal. 120" diameter x 190" long. Welded dished heads. Vessel has (2) 3", (1) 4" and (1)18" top inlets. S/N: R271-0054-55. NB #29946. Built 1971.(Repaired 1993 - NB Repair #89) Previous Use: Sulfuric Acid.