System Pros Cons

 

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Possible to contaminate clean tank by incorrect operation of valves Oil content meters prone to soiling and require regular cleaning White box system temperamental and requires regular adjustment System capacity struggles to keep up with demand resulting in frequent use of shore side reception facilities Single overboard valve  any failure of this valve is critical fault Static separator requires frequent cleaning !weekly with heavy use" #alve marking poor and system drawings drawi ngs out of date$ Pros

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%ow ppm discharge produced by system& typically '(ppm )igh redundancy as all bilge and waste water systems can be cross connected * separators allows parallel operation Separate bilge systems& rule and oily bilge for di+erent areas of ship reduces oil water concentrations ,eets all current statutory regulations White box system is tamper resistant and helps prevent accidental or deliberate illegal overboard discharge -mportant system valves sealed and routinely inspected by independent .nvironmental O/cer$