ASTM D5901-03
(Test Method)Standard Test Method for Freezing Point of Aviation Fuels (Automated Optical Method) (Withdrawn 2010)
Standard Test Method for Freezing Point of Aviation Fuels (Automated Optical Method) (Withdrawn 2010)
SIGNIFICANCE AND USE
The freezing point of an aviation fuel is an index of the lowest temperature of its utility for certain applications. Solid hydrocarbon crystals can restrict the flow of fuel in the fuel system of the aircraft. The temperature of the fuel in the aircraft tank normally decreases during flight depending on aircraft speed, altitude, and flight duration. The freezing point of the fuel must always be lower than the minimum operational fuel temperature.
Petroleum blending operations require precise measurement of the freezing point.
This test method expresses results with a resolution of 0.1°C.
This test method provides results that have been found to be equivalent to the results from Test Method D 2386 on identical samples. When the specification requires the use of Test Method D 2386, do not substitute this test method or any other method.
SCOPE
1.1 This test method covers the determination of the temperature below which solid hydrocarbon crystals may form in aviation turbine fuels.
Note 1—This test method describes an alternative procedure and automated apparatus which mimics the apparatus and procedure described in Test Method D 2386.
1.2 The measuring range of the apparatus is from 0 to -70°C. The precision statements were derived from samples with freezing point temperatures from -45 to -65°C.
Note 2—Typical aviation fuel has freezing point temperatures in the -40 to -65°C range. Samples with higher freezing points were not available for the current interlaboratory program.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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. For specific warning statements, see Section 7.
WITHDRAWN RATIONALE
This test method covers the determination of the temperature below which solid hydrocarbon crystals may form in aviation turbine fuels.
This test method is being balloted for withdrawal with no replacement because it has been deleted as a Reference Document from Specification D1655 by Subcommittee D02.J0 due to its inability to detect contamination in jet fuel.
Formerly under the jurisdiction of Committee D02 on Petroleum Products and Lubricants, this test method was withdrawn in May 2010.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:D5901–03
Designation: 434/98
Standard Test Method for
Freezing Point of Aviation Fuels (Automated Optical
1
Method)
This standard is issued under the fixed designation D5901; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D4177 Practice for Automatic Sampling of Petroleum and
4
Petroleum Products
1.1 This test method covers the determination of the tem-
E1 Specification for ASTM Liquid-in-Glass Thermometers
perature below which solid hydrocarbon crystals may form in
aviation turbine fuels.
3. Terminology
NOTE 1—This test method describes an alternative procedure and
3.1 Definitions:
automatedapparatuswhichmimicstheapparatusandproceduredescribed
3.1.1 freezing point, n—in aviation fuels, the fuel tempera-
in Test Method D2386.
ture at which solid hydrocarbon crystals, formed on cooling,
1.2 The measuring range of the apparatus is from 0 to
disappear when the temperature of the fuel is allowed to rise
−70°C. The precision statements were derived from samples
under specified conditions of test.
with freezing point temperatures from −45 to −65°C.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 automated method, n—the robotic automation of a
NOTE 2—Typical aviation fuel has freezing point temperatures in the
manual procedure and apparatus.
−40 to −65°C range. Samples with higher freezing points were not
available for the current interlaboratory program.
4. Summary of Test Method
1.3 The values stated in SI units are to be regarded as the
4.1 After insertion of 25 mLof the test specimen into a test
standard. The values given in parentheses are for information
chamber, the test specimen is cooled while being continuously
only.
stirredandmonitoredbyanopticalsystem.Thetemperatureof
1.4 This standard does not purport to address all of the
the specimen is measured with an electronic temperature
safety concerns, if any, associated with its use. It is the
measuring device. When crystal formation is detected in the
responsibility of the user of this standard to establish appro-
specimen, the temperature is recorded and the specimen in the
priate safety and health practices and determine the applica-
test chamber is allowed to warm, while being continuously
bility of regulatory limitations prior to use. For specific
stirred and monitored, until the crystals in the specimen
warning statements, see Section 7.
completely disappear. The temperature of the specimen when
2. Referenced Documents the last crystals disappear is recorded as the freezing point
2
(automated method).
2.1 ASTM Standards:
3
D2386 Test Method for Freezing Point of Aviation Fuels
5. Significance and Use
D4057 Practice for Manual Sampling of Petroleum and
3
5.1 The freezing point of an aviation fuel is an index of the
Petroleum Products
lowest temperature of its utility for certain applications. Solid
hydrocarbon crystals can restrict the flow of fuel in the fuel
systemoftheaircraft.Thetemperatureofthefuelintheaircraft
1
This test method is under the jurisdiction of ASTM Committee D02 on
tank normally decreases during flight depending on aircraft
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
speed, altitude, and flight duration. The freezing point of the
D02.07 on Flow Properties.
Current edition approved May 10, 2003. Published July 2003. Originally fuel must always be lower than the minimum operational fuel
approved in 1996. Last previous edition approved in 1999 as D5901–99. DOI:
temperature.
10.1520/D5901-03.
2
Annual Book of ASTM Standards, Vol 05.01.
3 4
Annual Book of ASTM Standards, Vol 05.02. Annual Book of ASTM Standards, Vol 14.03.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5901–03
5.2 Petroleum blending operations require precise measure- 8.2 Atleast25mLofsampleisrequiredforeachtest.Refer
ment of the freezing point. to Practice D4057.
5.3 This test method expresses results with a resolution of
9. Preparation of Apparatus
0.1°C.
5.4 This test method provides results that have been found 9.1 Prepare the apparatus for operation in accordance with
the manufacturer’s instructions.
to be equivalent to the results from Test Method D2386 on
identical samples. When the specification requires the use of 9.2 Clean and dry the test chamber with petroleum naphtha
to rinse out any previous specimen followed by a second rinse
Test Method D2386, do not substitute this test method or any
other meth
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