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Purpose of orifice in scavenge drain tank vent

  • To prevent loss of air.
  • To restrict the moisture drain flow , so that in case of excessive condensation pre warning alarm shlould intiate
  • If no orifice , then there is a loss of pressure along with scavenge drain , sludge will come to deck and make it dirty and lead to pollution
  • The orifice of size about 10 mm is fitted in the vent , to release the pressure in controlled way so that there will be a continuity of drain maintain to scavenge drain tank and scavenge pressure also maintained

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