ASTM D6426-02a

Standard Test Method for Determining Filterability of Distillate Fuel Oils

SCOPE
1.1 This test method covers a procedure for determining the filterability of distillate fuel oils within the viscosity range from 1.70 to 6.20 mm2/s (cSt) at 40°C.Note 1
ASTM specification fuels falling within the scope of this test method are Specification D 396 Grade Nos. 1 and 2, Specification D 975 Grades 1-D, low sulfur 1-D, 2-D, and low sulfur 2-D, and Specification D 2880 Grade Nos. 1-GT and 2-GT.
1.2 This test method is not applicable to fuels that contain undissolved water.
1.3 The values stated in SI units shall be considered standard.
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.

General Information

• Status: Historical
• Publication Date: 09-Dec-2002
• ICS: 27.060.10 - Liquid and solid fuel burners
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.14 - Stability, Cleanliness and Compatibility of Liquid Fuels

Relations

• Replaces: ASTM D6426-02 - Standard Test Method for Determining Filterability of Distillate Fuel Oils
• Effective Date: 10-Dec-2002
• Replaced By: ASTM D6426-04 - Standard Test Method for Determining Filterability of Middle Distillate Fuel Oils
• Effective Date: 01-Nov-2004
• Referred By: ASTM D6469-20 - Standard Guide for Microbial Contamination in Fuels and Fuel Systems
• Effective Date: 10-Dec-2002
• Referred By: ASTM D6824-23 - Standard Test Method for Determining Filterability of Aviation Turbine Fuel
• Effective Date: 10-Dec-2002
• Referred By: ASTM D6974-20 - Standard Practice for Enumeration of Viable Bacteria and Fungi in Liquid Fuels—Filtration and Culture Procedures
• Effective Date: 10-Dec-2002
• Referred By: ASTM D7261-22 - Standard Test Method for Determining Water Separation Characteristics of Diesel Fuels by Portable Separometer
• Effective Date: 10-Dec-2002
• Referred By: ASTM D2068-20 - Standard Test Method for Determining Filter Blocking Tendency
• Effective Date: 10-Dec-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation:D6426–02a
Standard Test Method for
1
Determining Filterability of Middle Distillate Fuel Oils
This standard is issued under the fixed designation D 6426; 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.
1. Scope E 1 Specification forASTM Liquid-in-Glass Thermometers
1.1 This test method covers a procedure for determining the
3. Terminology
filterabilityofdistillatefueloilswithintheviscosityrangefrom
2
3.1 Definitions of Terms Specific to This Standard:
1.70 to 6.20 mm /s (cSt) at 40°C.
3.1.1 For this test method, filterability is a measure of the
NOTE 1—ASTM specification fuels falling within the scope of this test
rapidity with which a standard filter medium is plugged by
method are Specification D 396 Grade Nos. 1 and 2, Specification D 975
insoluble matter in fuel and can be described in either of the
Grades 1-D, low sulfur 1-D, 2-D, and low sulfur 2-D, and Specification
following two ways:
D 2880 Grade Nos. 1-GT and 2-GT.
3.1.1.1 filterability (by pressure)—the pressure drop across
1.2 This test method is not applicable to fuels that contain
a filter medium when 300 mL of fuel is passed at a rate of 20
undissolved water.
mL/min.
1.3 The values stated in SI units shall be considered
3.1.1.2 filterability (by volume)—the volume of fuel passed
standard.
when104kPa(15psi)isreached.Thismethodofreportisused
1.4 This standard does not purport to address all of the
when less than 300 mL passes at that pressure.
safety concerns, if any, associated with its use. It is the
3.1.1.3 filterability quality factor (F-QF)—a value that de-
responsibility of the user of this standard to establish appro-
fines the filter plugging tendency of a fuel caused by particu-
priate safety and health practices and determine the applica-
late. The value is calculated using the volume and pressure
bility of regulatory limitations prior to use.
attained at the end of the test cycle. Depending on the outcome
of the test, two different equations are applied.
2. Referenced Documents
3.1.1.4 Discussion—Eq 1 is applied if the total sample was
2
2.1 ASTM Standards:
discharged prior to reaching the maximum pressure or Eq 2 if
D 396 Specification for Fuel Oils
the maximum pressure was reached prior to discharging the
D 975 Specification for Diesel Fuel Oils
entire sample. The equations proportion the results so that a
D 2880 Specification for Gas Turbine Fuel Oils
continuous range of 0 – 100 is attained. Eq 1 yields values
D 4057 Practice for Manual Sampling of Petroleum and
from 50 to 100, whereas Eq 2 yields values from 0 to 50.
Petroleum Products
Higher values signify less particulate that can plug a filter of a
D 4176 Test Method for Free Water and Particulate Con-
given pore size and porosity.
tamination in Distillate Fuels (Visual Inspection Proce-
(1) If the total sample (300 mL) is discharged prior to reaching the
dures)
maximum pressure (104 kPa or 15 psi), the F-QF is calculated by the
D 4177 Practice for Automatic Sampling of Petroleum and
following equation:
Petroleum Products
F2QF 5 ~~15 psi 2 P !/15 psi!~50! 1 ~50! (1)
D 4860 Test Method for Free Water and Particulate Con- ~300 mL at P ~F! ~F!
tamination in Mid-Distillate Fuels (Clear and Bright Nu-
where:
merical Rating)
P = final pressure when the total sample (300 mL) was
(F)
discharged.
1
This test method is under the jurisdiction of ASTM Committee D02 on
(2) If the total sample is not discharged prior to reaching the
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
maximum pressure (104 kPa or 15 psi), the F-QF is calculated by the
D02.14 on Stability and Cleanliness of Liquid Fuels.
following equation:
Current edition approved Dec. 10, 2002. Published March 2003. Originally
approved in 1999. Last previous edition approved in 2002 as D 6426–02.
2 F2QF 5 V / 6 (2)
~V ~F!at 15 psi! ~F!
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on where:
the ASTM website.
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D6426–02a
constant rate of 20 6 1 mL/min, and incorporating a pulse
V = final volume when the maximum pressure was
(F)
dampening mechanism to produce a smooth flow.
reached.
6.1.1.2 Pressure Transducer—Pressure transducer capable
3.1.1.5 Discussion—The final volume (V ) is divided by
(F)
of measuring gage pressure i
...