Abstract
ABSTRACTAs part of a program to develop reverse osmosis (RO) desalination systems for shipboard freshwater production, the David Taylor Naval Ship Research and Development Center worked with the Naval Sea Systems Command to install a 12,000 gal/day, two‐stage RO plant aboard USS Fletcher (DD 992) in 1981. The first stage provides potable water (less than 500 parts/million total dissolved solids) for crew needs; the second stage provides high purity water (less than 2 parts/million of total dissolved solids) for boiler makeup. The plant has been producing acceptable water quality and quantity despite some materials related problems. The system design has proven to be well suited for minimizing manning and maintenance requirements. A 12,000 gal/day “ship quality” RO system is now under contract to meet Navy needs for a reliable, minimum weight and volume, low energy desalination plant for future surface ships. The preproduction plant will be required to meet stringent reliability requirements as well as shock, vibration, and noise specifications as part of the process for obtaining approval for full production. This paper describes the technology developments necessary to achieve the present naval performance levels and discusses plans for future applications.
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