SHIPBORD SYSTEMS OF FUEL TREATMENT ARE ALSO LIMITED IN THEIR EFFECTTIVENESS AND IN MOST INSTANCE ARE UNGBLE TO COPE WITH CERTAIN TYPES OF CONTAMINANTS. ADDITIONALLY, THEREIS THE ISSURE OF LACK OF CREW COMPETENCE ON OPERATION AND MAINTENANCE OF THE FUEL TREATMENT PLANT. TO ADD TO THE PROBLEM ,UNIFORM STANDARDS FOR SEPARATORS HAVE NOT YET BEEN FORMULATED BUT DNV AND GL ARE IN THE PROCESS OF ESTABLISHING PERFORMANCE STANDARD AND TYPE APPROVAL SCHEME FOR OIL PURIFIRES. ALSO,VOLUNTARY CLASS STANDARDS FOR HEAVY FUEL OIL TREATMENT AND CONDITIONING SYSTEMS ARE JOINTLY BEING DEVELOPED BY DNY AND GL