ASTM D3241-11a
(Test Method)Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels
Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels
SIGNIFICANCE AND USE
The test results are indicative of fuel performance during gas turbine operation and can be used to assess the level of deposits that form when liquid fuel contacts a heated surface that is at a specified temperature.
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 differential pressure values in mm Hg are defined only in terms of this test method.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 WARNINGMercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s websitehttp://www.epa.gov/mercury/faq.htmfor additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.5 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 6.1.1, 7.2, 7.2.1, 7.3, 11.1.1, and Annex A3.
A1.1.1 This method covers a procedure for visually rating the heater tube produced by Test Method D3241.
A1.1.2 The final result from this test method is a tube color rating based on an arbitrary scale established for this test method plus two additional yes/no criteria that indicate the presence of an apparent large excess of deposit or an unusual deposit, or both.
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Designation: D3241 − 11a
Designation323/99 An American National Standard
Standard Test Method for
1
Thermal Oxidation Stability of Aviation Turbine Fuels
This standard is issued under the fixed designation D3241; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* D4306Practice for Aviation Fuel Sample Containers for
Tests Affected by Trace Contamination
1.1 This test method covers the procedure for rating the
E177Practice for Use of the Terms Precision and Bias in
tendencies of gas turbine fuels to deposit decomposition
ASTM Test Methods
products within the fuel system.
E691Practice for Conducting an Interlaboratory Study to
1.2 The differential pressure values in mm Hg are defined
Determine the Precision of a Test Method
only in terms of this test method. 3
2.2 ISO Standards:
1.3 The values stated in SI units are to be regarded as ISO 3274 Geometrical Product Specifications (GPS)—
standard. No other units of measurement are included in this
Surface Texture: Profile Method—Nominal Characteris-
standard. tics Of Contact (Stylus) Instruments
ISO 4288 Geometrical Product Specifications (GPS)—
1.4 WARNING—Mercury has been designated by many
Surface Texture: Profile Method—Rules And Procedures
regulatory agencies as a hazardous material that can cause
For The Assessment Of Surface Texture
central nervous system, kidney and liver damage. Mercury, or
4
2.3 ASTM Adjuncts:
its vapor, may be hazardous to health and corrosive to
Color Standard for Tube Deposit Rating
materials.Cautionshouldbetakenwhenhandlingmercuryand
mercury containing products. See the applicable product Ma-
3. Terminology
terial Safety Data Sheet (MSDS) for details and EPA’s
3.1 Definitions of Terms Specific to This Standard:
website—http://www.epa.gov/mercury/faq.htm—for addi-
3.1.1 deposits—oxidative products laid down on the test
tional information. Users should be aware that selling mercury
area of the heater tube or caught in the test filter, or both.
and/or mercury containing products into your state or country
3.1.1.1 Discussion—Fuel deposits will tend to predominate
may be prohibited by law.
at the hottest portion of the heater tube, which is between the
1.5 This standard does not purport to address all of the
30-mm and 50-mm position.
safety concerns, if any, associated with its use. It is the
3.1.2 heater tube—an aluminum coupon controlled at el-
responsibility of the user of this standard to establish appro-
evated temperature, over which the test fuel is pumped.
priate safety and health practices and determine the applica-
3.1.2.1 Discussion—The tube is resistively heated and con-
bility of regulatory limitations prior to use. For specific
trolled in temperature by a thermocouple positioned inside.
warning statements, see 6.1.1, 7.2, 7.2.1, 7.3, 11.1.1, and
The critical test area is the thinner portion, 60 mm in length,
Annex A3.
betweentheshouldersofthetube.Fuelinlettothetubeisatthe
2. Referenced Documents
0-mm position, and fuel exit is at 60 mm.
2
2.1 ASTM Standards:
3.2 Abbreviations:
D1655Specification for Aviation Turbine Fuels
3.2.1 ∆P—differential pressure.
1
This test method is under the jurisdiction of ASTM Committee D02 on
4. Summary of Test Method
PetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommittee
4.1 This test method for measuring the high temperature
D02.J0.03 on Combustion and Thermal Properties.
Current edition approved Oct. 1, 2011. Published October 2011. Originally
stability of gas turbine fuels uses an instrument that subjects
approved in 1973. Last previous edition approved in 2011 as D3241–11. DOI:
10.1520/D3241-11A.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from International Organization for Standardization (ISO), 1, ch. de
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
4
Standardsvolumeinformation,refertothestandard’sDocumentSummarypageon Available from ASTM International Headquarters. Order Adjunct No.
the ASTM website. ADJD3241. Original adjunct produced in 1986.
*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
1
---------------------- Page: 1 ----------------------
D3241 − 11a
TABLE 1 Instrument Models
Instrument Model Pressurize With Principle Differential Pressure by
A
202 nitrogen gear Hg Manometer; No Record
A
203 nitrog
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:D3241–11 Designation:D3241–11a
Designation 323/99
Standard Test Method for
1
Thermal Oxidation Stability of Aviation Turbine Fuels
This standard is issued under the fixed designation D3241; 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.
1. Scope*
1.1 Thistestmethodcoverstheprocedureforratingthetendenciesofgasturbinefuelstodepositdecompositionproductswithin
the fuel system.
1.2 The differential pressure values in mm Hg are defined only in terms of this test method.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4
1.4 WARNING—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central
nervous system, kidney and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution
should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet
(MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware
that selling mercury and/or mercury containing products into your state or country may be prohibited by law.
1.5 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 6.1.1, 7.2, 7.2.1, 7.3, 11.1.1, and Annex A3.
2. Referenced Documents
2
2.1 ASTM Standards:
D1655 Specification for Aviation Turbine Fuels
D4306 Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3
2.2 ISO Standards:
ISO 3274 Geometrical Product Specifications (GPS)—Surface Texture: Profile Method—Nominal Characteristics Of Contact
(Stylus) Instruments
ISO 4288 Geometrical Product Specifications (GPS)—Surface Texture: Profile Method—Rules And Procedures For The
Assessment Of Surface Texture
4
2.3 ASTM Adjuncts:
Color Standard for Tube Deposit Rating
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 deposits—oxidative products laid down on the test area of the heater tube or caught in the test filter, or both.
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.J0.03
on Combustion and Thermal Properties.
Current edition approved Sept.Oct. 1, 2011. Published SeptemberOctober 2011. Originally approved in 1973. Last previous edition approved in 20092011 as
´1
D3241–09 .D3241–11. DOI: 10.1520/D3241-11A.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20, Switzerland, http://www.iso.org.
4
Available from ASTM International Headquarters. Order Adjunct No. ADJD3241. Original adjunct produced in 1986.
*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.
1
---------------------- Page: 1 ----------------------
D3241–11a
3.1.1.1 Discussion—Fueldepositswilltendtopredominateatthehottestportionoftheheatertube,whichisbetweenthe30-mm
and 50-mm position.
3.1.2 heater tube—an aluminum coupon controlled at elevated temperature, over which the test fuel is pumped.
3.1.2.1 Discussion—The tube is resistively heated and controlled in temperature by a thermocouple positioned inside. The
critical test area is the thinner portion, 60 mm in length, between the shoulders of the tube. Fuel inlet to the tube is at the 0-mm
position, and fuel exit is at 60 mm.
3.2 Abbreviations:
3.2.
...
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