John
See below other results from tests carried out over a period of 4 weeks, during that time we connected a Kleentek machine which helped in reducing particle contamination and oxidation by-products.
We are looking at sweetening the oil in the 6,600 tank, the plan is to drain/add 1x205 litre drum per day to raise the antioxidant level to 25%
New oil contains 0.25% phenolic and 0.25% amine
also 80 ppm zinc which currently is down to 29 ppm.
Purification of turbine oil system
23 Turbine Blower..............UIN 5C2D5........UIN 3FBD1................... Electrostatic liquid cleaner
6,500 litre tank............................................................ Kleentek ELC-R100SP
............................................................................ 12L/min
Sequence #......................................1...............2...............3...............4
Date of Sample..................New oil.........29/06/2007......16/07/2007......23/07/2007......30/07/2007
Hours of Filtration.............0...............169.............408.............574
Gravimetric Patch
0.8 micron wt mg/100ml..........<1..............3...............2.7.............1
ISO Cleanliness code............18/15/10........23/22/18........19/17/11........15/13/11........17/15/11
Particle Count
# of particles >4μ..............1312............48292...........4302............286.............663
FTIR Oxidation absorbance units.4.5.............5.8.............6...............5.9.............6
TAN.............................0.23............0.31............0.31............0.29............0.28
Ruler - phenolic................................................................7%
......- amine...................................................................11.2%
RPVOT...........................310.............107
Ultra centrifuge................1...............4...............6...............5
Colour..........................L0.5............L6.5............6.5.............6.5.............6.5
Viscosity.......................66..............66..............66..............66..............67
Zinc............................82..............29..............27..............33..............29
Sulphur.........................684.............1390............1619............1402
Phosphorus......................129.............120.............118.............132.............129
Demulsibility...................41-37-2 (20)
Corrosion.......................1a
Foam......-sequence I...........300-0
..........-sequence II..........10-0
..........-sequence III.........70-20