CONTROL OF MARINE SULFATE-REDUCING BACTERIA IN WATER-DISPLACED SHIPBOARD FUEL STORAGE TANKS
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
Marine sulfate-reducing bacteria are responsible for a corrosive condition which develops in hydrocarbon fuel storage tanks employing sea water for displacement. Progress toward finding a method of control alternative to the currently used sodium chromate treatment for aviation gasoline tanks on aircraft carriers is reviewed. None of the currently accepted gasoline additives such as corrosion inhibitors and antioxidants are effective against sulfate-reducing bacteria. Increasing the alkalinity of the aqueous phase to a pH of 9 or 10 does not significantly inhibit their growth. Of a number of water soluble biocides which have been evaluated, one commercial compound appears effective at concentrations of a few parts per million. An improved laboratory method of obtaining reproducible inocula of sulfate-reducing organisms is being developed and will be used to carry out further studies of potential growth inhibitors.
- Marine Engineering