ASTM D3241-02

Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels (JFTOT Procedure)

SCOPE
1.1 This test method covers the procedure for rating the tendencies of gas turbine fuels to deposit decomposition products within the fuel system.
1.2 The values stated in SI units are to be regarded as the standard. The inch-pound values given in parentheses are for information only. The differential pressure values in mm Hg are defined only in terms of this test method.
1.3 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 hazard statements, see 6.1.1, 7.2, 7.2.1, 7.3, 11.1.1, and Annex A3.

General Information

• Status: Historical
• Publication Date: 09-Jan-2002
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.J0 - Aviation Fuels

Relations

• Replaces: ASTM D3241-01e1 - Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels (JFTOT Procedure)
• Effective Date: 10-Jan-2002
• Replaced By: ASTM D3241-02a - Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels (JFTOT Procedure)
• Effective Date: 10-Nov-2002
• Referred By: ASTM D1655-23 - Standard Specification for Aviation Turbine Fuels
• Effective Date: 10-Jan-2002
• Referred By: ASTM D7671-21 - Standard Test Method for Corrosiveness to Silver by Automotive Spark–Ignition Engine Fuel–Silver Strip Method
• Effective Date: 10-Jan-2002
• Referred By: ASTM D7667-21 - Standard Test Method for Determination of Corrosiveness to Silver by Automotive Spark-Ignition Engine Fuel—Thin Silver Strip Method
• Effective Date: 10-Jan-2002
• Referred By: ASTM D5677-17 - Standard Specification for Fiberglass (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe and Pipe Fittings, Adhesive Bonded Joint Type, for Aviation Jet Turbine Fuel Lines
• Effective Date: 10-Jan-2002
• Referred By: ASTM D7223-21 - Standard Specification for Aviation Certification Turbine Fuel
• Effective Date: 10-Jan-2002
• Referred By: ASTM D4054-23 - Standard Practice for Evaluation of New Aviation Turbine Fuels and Fuel Additives
• Effective Date: 10-Jan-2002
• Referred By: ASTM D6469-20 - Standard Guide for Microbial Contamination in Fuels and Fuel Systems
• Effective Date: 10-Jan-2002
• Referred By: ASTM D6615-22 - Standard Specification for Jet B Wide-Cut Aviation Turbine Fuel
• Effective Date: 10-Jan-2002
• Referred By: ASTM D8147-17(2023) - Standard Specification for Special-Purpose Test Fuels for Aviation Compression-Ignition Engines
• Effective Date: 10-Jan-2002
• Referred By: ASTM D7566-22a - Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons
• Effective Date: 10-Jan-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: D 3241 – 02
Designation 323/99
Standard Test Method for
Thermal Oxidation Stability of Aviation Turbine Fuels
1
(JFTOT Procedure)
This standard is issued under the fixed designation D 3241; 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 (e) indicates an editorial change since the last revision or reapproval.
This test method has been approved by the sponsoring committee and accepted by the cooperating organizations in accordance with
established procedures.
This standard has been approved for use by agencies of the Department of Defense.
5
1. Scope Color Standard for Tube Deposit Rating
1.1 This test method covers the procedure for rating the
3. Terminology
tendencies of gas turbine fuels to deposit decomposition
3.1 Definitions of Terms Specific to This Standard:
products within the fuel system.
3.1.1 deposits—oxidative products laid down on the test
1.2 The values stated in SI units are to be regarded as the
area of the heater tube or caught in the test filter, or both.
standard. The inch-pound values given in parentheses are for
3.1.1.1 Discussion—Fuel deposits will tend to predominate
information only. The differential pressure values in mm Hg
at the hottest portion of the heater tube which is between the 30
are defined only in terms of this test method.
mm and 50 mm position.
1.3 This standard does not purport to address all of the
3.1.2 heater tube—an aluminum coupon controlled at el-
safety concerns, if any, associated with its use. It is the
evated temperature, over which the test fuel is pumped.
responsibility of the user of this standard to establish appro-
3.1.2.1 Discussion—The tube is resistively heated and con-
priate safety and health practices and determine the applica-
trolled in temperature by a thermocouple positioned inside.
bility of regulatory limitations prior to use. For specific hazard
The critical test area is the thinner portion, 60 mm in length,
statements, see 6.1.1, 7.2, 7.2.1, 7.3, 11.1.1, and Annex A3.
between the shoulders of the tube. Fuel inlet to the tube is at the
2. Referenced Documents 0 mm position, and fuel exit is at 60 mm.
3.2 Abbreviations:
2.1 ASTM Standards:
2
3.2.1 D P—differential pressure.
D 1655 Specification for Aviation Turbine Fuels
D 4306 Practice for Aviation Fuel Sample Containers for
4. Summary of Test Method
3
Tests Affected by Trace Contamination
4.1 This test method for measuring the high temperature
E 128 Test Method for Maximum Pore Diameter and Per-
4 stability of gas turbine fuels uses the Jet Fuel Thermal
meability of Rigid Porous Filters for Laboratory Use
Oxidation Tester (JFTOT) that subjects the test fuel to condi-
E 177 Practice for Use of the Terms Precision and Bias in
4 tions that can be related to those occurring in gas turbine
ASTM Test Methods
engine fuel systems. The fuel is pumped at a fixed volumetric
E 691 Practice for Conducting an Interlaboratory Study to
4 flow rate through a heater after which it enters a precision
Determine the Precision of a Test Method
stainless steel filter where fuel degradation products may
2.2 ASTM Adjuncts:
become trapped.
4.1.1 The apparatus uses 450 mL of test fuel ideally during
a 2.5 h test. The essential data derived are the amount of
deposits on an aluminum heater tube, and the rate of plugging
1
This test method is under the jurisdiction of ASTM Committee D02 on
of a 17μ nominal porosity precision filter located just down-
Petroleum Products and Lubricantsand is the direct responsibility of Subcommittee
stream of the heater tube.
D02.Jon Aviation Fuels.
Current edition approved Jan. 10, 2002. Published March 2002. Originally
e1
published as D 3241 – 73 T. Last previous edition D 3241 – 01 .
2
Annual Book of ASTM Standards, Vol 05.01.
3
Annual Book of ASTM Standards, Vol 05.02.
4 5
Annual Book of ASTM Standards, Vol 14.02. Available from ASTM Headquarters. Order Adjunct No. ADJD3241.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 3241
5. Significance and Use 7.3 Use dry calcium sulfate + cobalt chloride granules (97 +
3 mix) in the aeration dryer. This granular material changes
5.1 The test results are indicative of fuel performance
gradually from blue to pink color indicating absorption of
during gas turbine operation and can be used to assess the level
water. (Warning—Do not inhale dust or ingest. May cause
of deposits that
...