ASTM D3240-15
(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
4.1 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 − 15 An American 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 U.S. Department of Defense.
1. Scope* standardusingaphotocellcomparator,andthefreewaterinthe
fuel sample is read out in parts per million by volume. By
1.1 Thistestmethodcoversthemeasurementofundissolved
varying the fuel sample size, the range of the test method can
water in aviation turbine fuels in flowing fuel streams without
be increased.
exposing the fuel sample to the atmosphere or to a sample
container. The usual range of test readings covers from 1 to
4. Significance and Use
60 ppm of free water. This test method does not detect water
4.1 Undissolved (free) water in aviation fuel can encourage
dissolved in the fuel, and thus test results for comparable fuel
the growth of microorganisms and subsequent corrosion in the
streams can vary with fuel temperature and the degree of water
tanks of aircraft and can also lead to icing of filters in the fuel
solubility in the fuel.
system. Control of free water is exercised in ground fueling
1.2 This standard does not purport to address all of the
equipment by use of filter-coalescers and water separators.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
3,4,5,6
5.1 Test Pad Rater (UV Source Device)—A device for
bility of regulatory limitations prior to use.
comparingthefluorescenceofthetestpadtoaknownstandard,
while both are illuminated by the same source of UV light,
2. Terminology
shall be used. The amount of UV light striking the standard
2.1 Definitions of Terms Specific to This Standard:
shall be modulated until the total fluorescence of the test pad
2.1.1 free water, n—water not dissolved in the fuel.
and the standard are equal; this shall be determined using a
2.1.2 Free Water Independent of Pad Reader (FWIPR), n—a
photocell bridge circuit null indicator. The light modulating
calculated result which provides free water independent of test
device for controlling the UV light striking the standard shall
pad reader used for measurement. FWIPR equations were
provide a direct reading in parts per million by volume of free
2
developed from the 2011 ILS data.
water.
3. Summary of Test Method
3
The Aqua-Glo Series II instrument manufactured by Gammon Technical
3.1 Ameasured sample of fuel is passed through as uranine
Products, Inc., P.O. Box 400, Manasquan, NJ 08736-0400 was used in the original
dye-treated filter pad. Undissolved (free) water in the fuel will
precision test program (RR:D02-1195). The unit is currently available in a Series V
react with the uranine dye. When the pad is subsequently
configuration, which is changed only in the power supply. All water content
measuring components remain of the same configuration as the Series II instrument.
illuminated by ultraviolet (UV) light, the dye previously
Manufacturers who wish to offer similar products are referred to Committee D02
contacted by free water will fluoresce a bright yellow with the
Equipment Replacement Guidelines.
4
brightness increasing for increasing amounts of free water in
The sole source of supply of the apparatus known to the committee at this time
the fuel. The light-illuminated pad is compared to a known is Gammon Technical Products Inc., P.O. Box 400, Manasquan, NJ 08736-0400.
5
The Digital Aqua-Glo (trademarked) instrument is manufactured by Gammon
Technical Products, Inc., P.O. Box 400, Manasquan, NJ 08736-0400.At instrument
1
This test method is under the jurisdiction of ASTM Committee D02 on start-up, the display of software version 5.0 indicates that the electronic settings of
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of the prototype units utilized in the 2011 ILS are in use. Because the electronic
Subcommittee D02.J0.05 on Fuel Cleanliness. settings were not optizimed at the time of the 2011 ILS, these units are only
Current edition approved June 15, 2015. Published August 2015. Originally permitted to display calculated FWIPR results. Gammon Technical Products is
approved in 1973. Last previous edition approved in 2011 as D3240 – 11. DOI: working toward ASTM approval of Digital Aqua-Glo instruments with optimized
10.1520/D3240-15. electronic settings.
2 6
Supporting data have been filed at ASTM Internationa
...
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.
Designation: D3240 − 11 D3240 − 15 An American 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 U.S. 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, n—water not dissolved in the fuel.
2.1.2 Free Water Independent of Pad Reader (FWIPR), n—a calculated result which provides free water independent of test pad
2
reader used for measurement. FWIPR equations were developed from the 2011 ILS data.
3. Summary of Test Method
3.1 A measured 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
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) 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.
5. Apparatus
3,4,5,6
5.1 Test Pad Rater (UV Source Device)—A device 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
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.J0.05 on Fuel Cleanliness.
Current edition approved March 3, 2011June 15, 2015. Published March 2011August 2015. Originally approved in 1973. Last previous edition approved in 20102011 as
D3240D3240 – 11.–10. DOI: 10.1520/D3240-11.10.1520/D3240-15.
2
Supporting data have been filed at ASTM International Headquarters and may be obtained by requesting Research Report RR:D02-1804. Contact ASTM Customer
Service at service@astm.org.
3
The Aqua-Glo Series II instrument manufactured by Gammon Technical Products, Inc., P.O. Box 400, Manasquan, NJ 08736-0400 was used in the original precision
test program. program (RR:D02-1195). 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.
4
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.
*A Summary of Changes section appears at the end of this standard
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...
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