Some additional notes: Another circumstance that can produce water contamination is the phase change that occurs at high altitude/low temperature. Jet fuel may retain a high amount of dissolved water when it's loaded at a location with a high temperature (example: Miami). That dissolved water, undetectable by conventional, readily available means, is carried in the fuel. At high altitude, the temperature drops, and the dissolved water will change phase and fall out of solution in the form of free water. Now there may be a high concentration of free water in the aircraft's fuel tanks that was not present at loading. This free water can freeze and cause problems. Most aircraft combat this with either Fuel System Icing Inhibitor (FSII) additive blended into the fuel at loading, or larger aircraft have heated fuel tanks to prevent the fuel from reaching low temperatures. Water that remains in the aircraft's tanks can lead to internal corrosion not normally found until depot maintenance, and it can also produce awkward conversations between flight crews and the fueling team when water is discovered in the aircraft's sumps. "Where did this water come from?" Some additional design features that help combat water contamination are floating suctions inside storage tanks that make sure the fuel being drawn out is not being pulled from the bottom of the tank, and water defense sensors on many filter vessels that alert or shut down when a large amount of free water is detected in the filter vessel.
Friend what is the difference between use The astm d 8073 or The astm d 3948 water separación? Because i hve been The experience high msep with 8973 method but The same batch with 3948 lower msep
Regarding water detection paste, you mention there is no graduating scale of detection; rather a binary yes or no result. Is there a minimum PPM threshold for that paste to activate? Or is the threshold so low it's a non-factor?
Great question, one I have often wondered myself. I'm certain that there is a minimum, but I do not know and could not find that threshold after reviewing product information, and regulatory/guidance materials including ATA 103 and ASTM Manual 5.
Thanks bruv
Some additional notes:
Another circumstance that can produce water contamination is the phase change that occurs at high altitude/low temperature. Jet fuel may retain a high amount of dissolved water when it's loaded at a location with a high temperature (example: Miami). That dissolved water, undetectable by conventional, readily available means, is carried in the fuel. At high altitude, the temperature drops, and the dissolved water will change phase and fall out of solution in the form of free water. Now there may be a high concentration of free water in the aircraft's fuel tanks that was not present at loading. This free water can freeze and cause problems. Most aircraft combat this with either Fuel System Icing Inhibitor (FSII) additive blended into the fuel at loading, or larger aircraft have heated fuel tanks to prevent the fuel from reaching low temperatures. Water that remains in the aircraft's tanks can lead to internal corrosion not normally found until depot maintenance, and it can also produce awkward conversations between flight crews and the fueling team when water is discovered in the aircraft's sumps. "Where did this water come from?"
Some additional design features that help combat water contamination are floating suctions inside storage tanks that make sure the fuel being drawn out is not being pulled from the bottom of the tank, and water defense sensors on many filter vessels that alert or shut down when a large amount of free water is detected in the filter vessel.
Friend what is the difference between use The astm d 8073 or The astm d 3948 water separación? Because i hve been The experience high msep with 8973 method but The same batch with 3948 lower msep
Very informative video especially when you said that water finding paste only shows you there is water in the fuel but doesn't show the parameters.
Regarding water detection paste, you mention there is no graduating scale of detection; rather a binary yes or no result. Is there a minimum PPM threshold for that paste to activate? Or is the threshold so low it's a non-factor?
Great question, one I have often wondered myself. I'm certain that there is a minimum, but I do not know and could not find that threshold after reviewing product information, and regulatory/guidance materials including ATA 103 and ASTM Manual 5.