Tube type lube oil cooler pressure testing

  • Isolate the cooler, close saltwater inlet and outlet, close lube oil inlet and outlet valves.
  • Put blanks between valves & Shell of lube oil side.
  • Open the testing flange Cover & put air connection assembly flange with a calibrated pressure gauge and a control valve.
  • Slowly admit service air upto pressure 4 bar, after reaching 4 bar close the control valve.
  • Keep the system pressurised for 30min. Pressure should not drop more than 10%.
  • If pressure drop is more, then there is a leak & carry out leak test.

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