ASTM D3240-11
(Test Method)Standard Test Method for Undissolved Water In Aviation Turbine Fuels
Standard Test Method for Undissolved Water In Aviation Turbine Fuels
SIGNIFICANCE AND USE
Undissolved (free) water in aviation fuel can encourage the growth of microorganisms and subsequent corrosion in the tanks of aircraft and can also lead to icing of filters in the fuel system. Control of free water is exercised in ground fueling equipment by use of filter-coalescers and water separators.
SCOPE
1.1 This test method covers the measurement of undissolved water in aviation turbine fuels in flowing fuel streams without exposing the fuel sample to the atmosphere or to a sample container. The usual range of test readings covers from 1 to 60 ppm of free water. This test method does not detect water dissolved in the fuel, and thus test results for comparable fuel streams can vary with fuel temperature and the degree of water solubility in the fuel.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: D3240 − 11 AnAmerican National Standard
Standard Test Method for
1
Undissolved Water In Aviation Turbine Fuels
This standard is issued under the fixed designation D3240; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
Balloted and approved material has been included editorially, and the year date was changed on March 3, 2011.
1. Scope* tanks of aircraft and can also lead to icing of filters in the fuel
system. Control of free water is exercised in ground fueling
1.1 Thistestmethodcoversthemeasurementofundissolved
equipment by use of filter-coalescers and water separators.
water in aviation turbine fuels in flowing fuel streams without
exposing the fuel sample to the atmosphere or to a sample
5. Apparatus
container. The usual range of test readings covers from 1 to
2,3,4
60 ppm of free water. This test method does not detect water
5.1 Test Pad Rater (UV Source Device)—A device for
dissolved in the fuel, and thus test results for comparable fuel
comparingthefluorescenceofthetestpadtoaknownstandard,
streams can vary with fuel temperature and the degree of water
while both are illuminated by the same source of UV light,
solubility in the fuel.
shall be used. The amount of UV light striking the standard
shall be modulated until the total fluorescence of the test pad
1.2 This standard does not purport to address all of the
and the standard are equal; this shall be determined using a
safety concerns, if any, associated with its use. It is the
photocell bridge circuit null indicator. The light modulating
responsibility of the user of this standard to establish appro-
device for controlling the UV light striking the standard shall
priate safety and health practices and determine the applica-
provide a direct reading in parts per million by volume of free
bility of regulatory limitations prior to use.
water.
2. Terminology
4,5
5.2 Test Pad Rater (LED Source Device)—A device for
2.1 Definitions of Terms Specific to This Standard:
rating the fluorescence of the test pad directly by illumination
2.1.1 free water—water not dissolved in the fuel.
by a narrow band light source provided by colored LED’s. The
total fluorescence of the test pad is measured directly using a
3. Summary of Test Method
photo sensitive transistor. The intensity of the fluorescence
3.1 Ameasured sample of fuel is passed through as uranine
measurement is converted by the device and shall provide a
dye-treated filter pad. Undissolved (free) water in the fuel will
direct reading in parts per million by volume of free water.
react with the uranine dye. When the pad is subsequently
5.3 Test Pads—Absorbent filter disks of 25-mm diameter
illuminated by ultraviolet (UV) light, the dye previously
shall be coated on one side with uranine (sodium fluorescein)
contacted by free water will fluoresce a bright yellow with the
dye at a concentration of 0.23 to 0.29 mg per 25 mm pad. The
brightness increasing for increasing amounts of free water in
the fuel. The light-illuminated pad is compared to a known
standardusingaphotocellcomparator,andthefreewaterinthe
fuel sample is read out in parts per million by volume. By
2
The Aqua-Glo Series II instrument manufactured by Gammon Technical
varying the fuel sample size, the range of the test method can
Products, Inc., P.O. Box 400, Manasquan, NJ 08736-0400 was used in the precision
test program. The unit is currently available in a Series V configuration, which is
be increased.
changed only in the power supply.All water content measuring components remain
of the same configuration as the Series II instrument. Manufacturers who wish to
4. Significance and Use
offer similar products are referred to Committee D02 Equipment Replacement
4.1 Undissolved (free) water in aviation fuel can encourage Guidelines.
3
The sole source of supply of the apparatus known to the committee at this time
the growth of microorganisms and subsequent corrosion in the
is Gammon Technical Products Inc., P.O. Box 400, Manasquan, NJ 08736-0400.
4
If you are aware of alternative suppliers, please provide this information to
1
This test method is under the jurisdiction of ASTM Committee D02 on ASTM International Headquarters. Your comments will receive careful consider-
1
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee ation at a meeting of the responsible technical committee, which you may attend.
5
D02.J0.05 on Fuel Cleanliness. The sole source of supply of the LED Source Device JF-WA1 instrument
Current edition approved March 3,
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:D3240–05 Designation:D3240–11
Standard Test Method for
1
Undissolved Water In Aviation Turbine Fuels
This standard is issued under the fixed designation D3240; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
Balloted and approved material has been included editorially, and the year date was changed on March 3, 2011.
1. Scope*
1.1 This test method covers the measurement of undissolved water in aviation turbine fuels in flowing fuel streams without
exposing the fuel sample to the atmosphere or to a sample container. The usual range of test readings covers from 1 to 60 ppm
of free water. This test method does not detect water dissolved in the fuel, and thus test results for comparable fuel streams can
vary with fuel temperature and the degree of water solubility in the fuel.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Terminology
2.1 Definitions of Terms Specific to This Standard:
2.1.1 free water—water not dissolved in the fuel.
3. Summary of Test Method
3.1 Ameasured sample of fuel is passed through as uranine dye-treated filter pad. Undissolved (free) water in the fuel will react
with the uranine dye. When the pad is subsequently illuminated by ultraviolet (UV) light, the dye previously contacted by free
water will fluoresce a bright yellow with the brightness increasing for increasing amounts of free water in the fuel. The UV
light-illuminated pad is compared to a known standard using a photocell comparator, and the free water in the fuel sample is read
out in parts per million by volume. By varying the fuel sample size, the range of the test method can be increased.
4. Significance and Use
4.1 Undissolved(free)waterinaviationfuelcanencouragethegrowthofmicroorganismsandsubsequentcorrosioninthetanks
of aircraft and can also lead to icing of filters in the fuel system. Control of free water is exercised in ground fueling equipment
by use of filter-coalescers and water separators.
5. Apparatus
2,3,4
5.1 Test Pad RaterTest Pad Rater (UVSource Device)—Adevice for comparing the fluorescence of the test pad to a known
standard, while both are illuminated by the same source of UV light, shall be used. The amount of UV light striking the standard
shall be modulated until the total fluorescence of the test pad and the standard are equal; this shall be determined using a photocell
bridge circuit null indicator. The light modulating device for controlling the UV light striking the standard shall provide a direct
reading in parts per million by volume of free water.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.J0.05
on Aviation Fuels.Fuel Cleanliness.
Current edition approved Nov. 1, 2005.March 3, 2011. Published November 2005.March 2011. Originally approved in 1973. Last previous edition approved in 20012010
as D3240–91(2001).D3240–10. DOI: 10.1520/D3240-05.10.1520/D3240-11.
2
TheAqua-GloSeriesIIinstrumentmanufacturedbyGammonTechnicalProducts,Inc.,P.O.Box400,Manasquan,NJ08736-0400wasusedintheprecisiontestprogram.
The unit is currently available in a Series V configuration, which is changed only in the power supply. All water content measuring components remain of the same
configuration as the Series II instrument. Manufacturers who wish to offer similar products are referred to Committee D02 Equipment Replacement Guidelines.
3
The sole source of supply of the apparatus known to the committee at this time is Gammon Technical Products Inc., P.O. Box 400, Manasquan, NJ 08736-0400.Ifyou
are aware of alternative suppliers, please provide this information to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of
the responsible technical committee, which you may attend.
3
The sole source of supply of the apparatus known to the committee at this time is Gammon Technical Products Inc., P.O. Box 400, Manasquan, NJ 08736-0400.
4
Aqua-Glo test
...
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