ASTM D3241-02a

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-Nov-2002
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.J0.03 - Combustion and Thermal Properties

Relations

• Replaces: ASTM D3241-02 - Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels (JFTOT Procedure)
• Effective Date: 10-Nov-2002
• Replaced By: ASTM D3241-02ae1 - Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels (JFTOT Procedure)
• Effective Date: 10-Nov-2002
• Referred By: ASTM D7223-21 - Standard Specification for Aviation Certification Turbine Fuel
• Effective Date: 10-Nov-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-Nov-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-Nov-2002
• Referred By: ASTM D6469-20 - Standard Guide for Microbial Contamination in Fuels and Fuel Systems
• Effective Date: 10-Nov-2002
• Referred By: ASTM D6615-22 - Standard Specification for Jet B Wide-Cut Aviation Turbine Fuel
• Effective Date: 10-Nov-2002
• Referred By: ASTM D1655-23 - Standard Specification for Aviation Turbine Fuels
• Effective Date: 10-Nov-2002
• Referred By: ASTM D7566-22a - Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons
• Effective Date: 10-Nov-2002
• Referred By: ASTM D4054-23 - Standard Practice for Evaluation of New Aviation Turbine Fuels and Fuel Additives
• Effective Date: 10-Nov-2002
• Referred By: ASTM D8147-17(2023) - Standard Specification for Special-Purpose Test Fuels for Aviation Compression-Ignition Engines
• Effective Date: 10-Nov-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-Nov-2002

Standards Content (Sample)

NOTICE: This standard has either been superceded 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 – 02a
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 standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Terminology
1.1 This test method covers the procedure for rating the 3.1 Definitions of Terms Specific to This Standard:
tendencies of gas turbine fuels to deposit decomposition 3.1.1 deposits—oxidative products laid down on the test
products within the fuel system. area of the heater tube or caught in the test filter, or both.
1.2 The values stated in SI units are to be regarded as the 3.1.1.1 Discussion—Fuel deposits will tend to predominate
standard. The inch-pound values given in parentheses are for at the hottest portion of the heater tube which is between the 30
information only. The differential pressure values in mm Hg mm and 50 mm position.
are defined only in terms of this test method. 3.1.2 heater tube—an aluminum coupon controlled at el-
1.3 This standard does not purport to address all of the evated temperature, over which the test fuel is pumped.
safety concerns, if any, associated with its use. It is the 3.1.2.1 Discussion—The tube is resistively heated and con-
responsibility of the user of this standard to establish appro- trolled in temperature by a thermocouple positioned inside.
priate safety and health practices and determine the applica- The critical test area is the thinner portion, 60 mm in length,
bility of regulatory limitations prior to use. For specific hazard between the shoulders of the tube. Fuel inlet to the tube is at the
statements, see 6.1.1, 7.2, 7.2.1, 7.3, 11.1.1, and Annex A3. 0 mm position, and fuel exit is at 60 mm.
3.2 Abbreviations:
2. Referenced Documents
3.2.1 D P—differential pressure.
2.1 ASTM Standards:
2 4. Summary of Test Method
D 1655 Specification for Aviation Turbine Fuels
D 4306 Practice for Aviation Fuel Sample Containers for 4.1 This test method for measuring the high temperature
3
Tests Affected by Trace Contamination stability of gas turbine fuels uses the Jet Fuel Thermal
E 177 Practice for Use of the Terms Precision and Bias in Oxidation Tester (JFTOT) that subjects the test fuel to condi-
4
ASTM Test Methods tions that can be related to those occurring in gas turbine
E 691 Practice for Conducting an Interlaboratory Study to engine fuel systems. The fuel is pumped at a fixed volumetric
4
Determine the Precision of a Test Method flow rate through a heater after which it enters a precision
2.2 ASTM Adjuncts: stainless steel filter where fuel degradation products may
5
Color Standard for Tube Deposit Rating 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
1
This test method is under the jurisdiction of ASTM Committee D02 on
deposits on an aluminum heater tube, and the rate of plugging
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
of a 17μ nominal porosity precision filter located just down-
D02.J0 on Aviation Fuels.
Current edition approved Nov. 10, 2002. Published January 2003. Originally stream of the heater tube.
approved in 1973. Last previous edition approved in 2002 as D 3241–02.
2
Annual Book of ASTM Standards, Vol 05.01.
5. Significance and Use
3
Annual Book of ASTM Standards, Vol 05.02.
4
5.1 The test results are indicative of fuel performance
Annual Book of ASTM Standards, Vol 14.02.
5
Available from ASTM Headquarters. Order Adjunct No. ADJD3241. during gas turbine operation and can be used to assess the level
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 3241 – 02a
TABLE 1 Models of JFTOT
gradually from blue to pink color indicating absorption of
JFTOT User Pressurize Pump water. (Warning—Do not inhale dust or ingest. May cause
Differential Pressure By
Model Manual With Principle
stomach disorder.)
A
202 202/203 nitrogen gear Hg Manometer; No Record
A
203 202/203 nitrogen gear Manometer + Graphical
8. Standard Operating Conditions
Record
B
215 215 nitrogen gear Transducer + Printed 8.1 Standard conditions of the test method are as follows:
Record
8.1.1
...