Attachment 2_ MIL-DTL-25524G.pdf

Comments, suggestions, or questions on this document should be addressed to AFPET/PTPS, 2430 C Street, Building 70, Area B, Wright-Patterson AFB, OH 45433-7631 or e-mailed to AFPET.PTPS@us.af.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https://assist.dla.mil.

AMSC N/A FSC 9130

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

METRIC

MIL-DTL-25524G(USAF)

26 February 2019

SUPERSEDING

MIL-DTL-25524F(USAF)

w/ Amendment 1 25 July 2016

DETAIL SPECIFICATION

TURBINE FUEL, AVIATION, THERMALLY STABLE (JPTS)

This specification is approved for use by the Department of the Air Force and is available for use by all Departments and Agencies of the Department of Defense.

1. SCOPE

1.1 Scope. This specification covers one grade of turbine fuel designated as Aviation Thermally Stable Turbine Fuel (JPTS) (see 6.1).

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed.

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mailto:AFPET.PTPS@us.af.mil https://assist.dla.mil/

MIL-DTL-25524G

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-PRF-25017 - Inhibitor, Corrosion/Lubricity Improver, Fuel Soluble (NATO S-1747)

MIL-DTL-85470 - Inhibitor, Icing, Fuel System, High Flash, NATO Code Number S-1745

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-290 - Packaging and Marking of Petroleum and Related Products

QUALIFIED PRODUCTS LIST

QPL-25017 - Inhibitor, Corrosion/Lubricity Improver, Fuel Soluble (NATO S-1747)

(Copies of these documents are available online at https://quicksearch.dla.mil.)

2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

ASTM INTERNATIONAL

ASTM D56 - Standard Test Method for Flash Point by Tag Closed Cup Tester

ASTM D86 - Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure

ASTM D93 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester

ASTM D130 - Standard Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test

ASTM D156 - Standard Test Method for Saybolt Color of Petroleum Products (Saybolt Chromometer Method)

ASTM D381 - Standard Test Method for Gum Content in Fuels by Jet Evaporation

ASTM D445 - Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity) https://quicksearch.dla.mil/

ASTM D1266 - Standard Test Method for Sulfur in Petroleum Products (Lamp Method)

ASTM D1298 - Standard Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method

ASTM D1319 - Standard Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption

ASTM D1322 - Standard Test Method for Smoke Point of Kerosine and Aviation Turbine Fuel

ASTM D2276 - Standard Test Method for Particulate Contaminant in Aviation Fuel by Line Sampling

ASTM D2386 - Standard Test Method for Freezing Point of Aviation Fuels ASTM D2622 - Standard Test Method for Sulfur in Petroleum Products by

Wavelength Dispersive X-ray Fluorescence Spectrometry ASTM D2887 - Standard Test Method for Boiling Range Distribution of

Petroleum Fractions by Gas Chromatography ASTM D3120 - Standard Test Method for Trace Quantities of Sulfur in Light

Liquid Petroleum Hydrocarbons by Oxidative Microcoulometry ASTM D3227 - Standard Test Method for (Thiol Mercaptan) Sulfur in

Gasoline, Kerosine, Aviation Turbine, and Distillate Fuels (Potentiometric Method)

ASTM D3241 - Standard Test Method for Thermal Oxidation Stability of Aviation Turbine Fuels

ASTM D3242 - Standard Test Method for Acidity in Aviation Turbine Fuel ASTM D3338 - Standard Test Method for Estimation of Net Heat of

Combustion of Aviation Fuels ASTM D3343 - Standard Test Method for Estimation of Hydrogen Content of

Aviation Fuels ASTM D3701 - Standard Test Method for Hydrogen Content of Aviation

Turbine Fuels by Low Resolution Nuclear Magnetic Resonance Spectrometry

ASTM D3828 - Standard Test Methods for Flash Point by Small Scale Closed Cup Tester

ASTM D3948 - Standard Test Method for Determining Water Separation Characteristics of Aviation Turbine Fuels by Portable Separometer

ASTM D4052 - Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

ASTM D4057 - Standard Practice for Manual Sampling of Petroleum and Petroleum Products

ASTM D4177 - Standard Practice for Automatic Sampling of Petroleum and Petroleum Products

ASTM D4294 - Standard Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-Ray Fluorescence Spectrometry

ASTM D4306 - Standard Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination

ASTM D4529 - Standard Test Method for Estimation of Net Heat of Combustion of Aviation Fuels

ASTM D4809 - Standard Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter (Precision Method)

ASTM D4952 - Standard Test Method for Qualitative Analysis for Active Sulfur Species in Fuels and Solvents (Doctor Test)

ASTM D5006 - Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels

ASTM D5452 - Standard Test Method for Particulate Contamination in Aviation Fuels by Laboratory Filtration

ASTM D5453 - Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence

ASTM D5972 - Standard Test Method for Freezing Point of Aviation Fuels (Automatic Phase Transition Method)

ASTM D6045 - Standard Test Method for Color of Petroleum Products by the Automatic Tristimulus Method

ASTM D6379 - Standard Test Method for Determination of Aromatic Hydrocarbon Types in Aviation Fuels and Petroleum Distillates—High Performance Liquid Chromatography Method with Refractive Index Detection

ASTM D6986 - Standard Test Method for Free Water, Particulate and Other Contamination in Aviation Fuels (Visual Inspection Procedures)

ASTM D7039 - Standard Test Method for Sulfur in Gasoline, Diesel Fuel, Jet Fuel, Kerosine, Biodiesel, Biodiesel Blends, and Gasoline- Ethanol Blends by Monochromatic Wavelength Dispersive X-ray Fluorescence Spectrometry

ASTM D7042 - Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)

ASTM D7153 - Standard Test Method for Freezing Point of Aviation Fuels (Automatic Laser Method)

ASTM D7154 - Standard Test Method for Freezing Point of Aviation Fuels (Automatic Fiber Optical Method)

ASTM D7171 - Standard Test Method for Hydrogen Content of Middle Distillate Petroleum Products by Low-Resolution Pulsed Nuclear Magnetic Resonance Spectroscopy

ASTM D7224 - Standard Test Method for Determining Water Separation Characteristics of Kerosine-Type Aviation Turbine Fuels Containing Additives by Portable Separometer

ASTM D7345 - Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure (Micro Distillation Method)

ASTM D7619 - Standard Test Method for Sizing and Counting Particles in Light and Middle Distillate Fuels, by Automatic Particle Counter

ASTM D7777 - Standard Test Method for Density, Relative Density, or API Gravity of Liquid Petroleum by Portable Digital Density Meter

ASTM D7945 - Standard Test Method for Determination of Dynamic Viscosity and Derived Kinematic Viscosity of Liquids by Constant Pressure Viscometer

ASTM D8166 - Standard Test Method for Sizing and Counting Particulates in Light and Middle Distillate Fuels and Biodiesel Blend (B6 to B20) Using Continuous Flow and Bottle Sampler Automatic Particle Counters

ASTM E29 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

(Copies of these documents are available from https://www.astm.org.)

ENERGY INSTITUTE

IP 540 - Determination of the existent gum content of aviation turbine fuel - Jet evaporation method

IP 564 - Determination of the level of cleanliness of aviation turbine fuel - Laboratory automatic particle counter method

IP 565 - Determination of the level of cleanliness of aviation turbine fuel - Portable automatic particle counter method

IP 577 - Determination of the level of cleanliness of aviation turbine fuel - Automatic particle counter method using light extinction

(Copies of these documents are available from https://publishing.energyinst.org/.)

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 4406 - Hydraulic fluid power - Fluids - Method for coding the level of contamination by solid particles

ISO 11171 - Hydraulic fluid power - Calibration of automatic particle counters for liquids

(Copies of these documents are available from https://www.iso.org.)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS

3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2.

3.2 Materials. Except as otherwise specified herein, the fuel shall consist completely of hydrocarbon compounds. Virgin, recycled, or reclaimed petroleum products may be used.

3.3 Chemical and Physical Requirements. The chemical and physical requirements of the finished fuel (hydrocarbon blend plus all additives listed herein) shall conform to the requirements listed in section 3 and Table I. Requirements contained herein are not subject to correction for test tolerances.

3.3.1 Storage stability. The finished fuel shall remain stable and conform to the requirements in Table I for at least 1 year when tested in accordance with 4.2.3.

TABLE I. Chemical and physical requirements and test methods.

REQUIREMENTS Minimum Maximum Test Method or Test Paragraph

WORKMANSHIP Pass 3.5

COMPOSITION

Color, Saybolt +24 D156 1 or D6045 Total acid number, mg KOH/g 0.015 D3242 Aromatics, volume percent 5.0 20.0 D1319 1 or D6379 Sulfur, Mercaptan, mass percent or Doctor Test 2

0.001 negative

D3227 1

D4952 Sulfur, total, mass percent 0.30 D1266, D2622, D3120 3, D4294 1, D5453, or D7039

VOLATILITY

Distillation temperature, °C (D2887 limits in parenthesis)

D86 1, D2887, or D7345 4

Initial boiling point 157 (105) 10 percent recovered 193 (174) 50 percent recovered 204 (207) 90 percent recovered 238 (250) End point 260 (288) Residue, volume percent (D86) 1.5 Loss, volume percent (D86) 1.5

Flash point, °C (°F) 5 43 (110) D56, D93 1, or D3828 Density, kg/L (API) at 15 °C 0.767 (53.0) 0.797 (46.0) D1298, D4052 1, or

D7777

FLUIDITY

Freezing point, °C (°F) -53 (-64) D2386 1, D5972, D7153, or D7154

Viscosity, mm2/s @ -40 °C 12.0 D445 1, D7042 6, or D7945

COMBUSTION

Net heat of combustion, MJ/kg (BTU/lb)

42.8 (18,400) D3338, D4529 or D4809 1

Hydrogen content, mass percent or Smoke point, mm

14.00

25.0

D3343, D3701, or D7171 1

D1322

CORROSION

Copper strip corrosion, 2 hr at 100 °C 1b D130

TABLE I. Chemical and physical requirements and test methods – Continued.

REQUIREMENTS Minimum Maximum Test Method or Test Paragraph

THERMAL STABILITY

Thermal stability (2.5 hr at 335 °C) 7 D3241

Change in pressure drop, mm Hg 25 Tube rating: The following requirement shall be met

Annex A3 ETR 1 or Annex A2 ITR, average deposit thickness over area of 2.5 mm2, nm

CONTAMINANTS

Existent gum, mg/100 mL 8 5 D381 1 or IP 540 Particulate matter 9

Gravimetric, mg/L 10 D2276 or D5452 1 Origin 0.3 Destination 0.5

Particle counting, cumulative channel counts (destination) 11

IP 564, IP 565, IP 577,

D7619, or D8166

Micro-separometer rating, min 12 D3948 or D7224 1

ADDITIVES

Antioxidant Report type and concentration 3.4.1

Metal deactivator Report type used and concentration of the active ingredient

3.4.2

Fuel system icing inhibitor, vol. percent 0.10 0.15 D5006 & 3.4.3 JFA-5, mg/L 8.6 11.4 3.4.4 Corrosion inhibitor/lubricity improver Report additive used and concentration 3.4.5

NOTES:

1. Referee Test Method.

2. If the Doctor Test results in a failure ('positive' result), then mercaptan sulfur content shall be determined by the referee test method ASTM D3227.

3. The sulfur content detection range for ASTM D3120 is 3.0 mg/kg to 1000 mg/kg.

4. ASTM D7345 results shall be corrected to bias-free distillation results by the application of the correction factors in the D7345 Precision and Bias section.

5. ASTM D56 may give results up to 1 °C (2 °F) below the ASTM D93 results. ASTM D3828 may give results up to 1.7 °C (3 °F) below the ASTM D93 results.

6. ASTM D7042 results shall be corrected to bias-free viscosity results by the application of the correction factor in the D7042 Precision and Bias section.

TABLE I. Chemical and physical requirements and test methods – Continued.

7. See 4.5.2.1 for the Thermal Stability testing and rating procedures. If the ITR reports "N/A" for the tube's volume measurement, the result constitutes a failure and the result shall be reported as ">85 nm." The ETR shall be the referee thermal stability heater tube deposit measurement procedure.

8. The preferred vaporizing medium for aviation turbine fuel is steam; however, the existent gum test IP 540 may be performed using air as the vaporizing medium. If air is used instead of steam, it shall be reported.

9. Particulate matter shall be determined by either gravimetric or particle counting. Should particle counting result in failure, the gravimetric method shall be the referee.

10. A minimum sample size of 3.785 liters (1 gallon) shall be filtered.

11. Particle counting, where equipment and laboratory capability exist, is the alternate to the gravimetric method. The limits provided below are for particulate matter at destination.

Should particle counting result in failure, the gravimetric method shall be the referee.

Particle counting, individual channel counts & ISO Code

Channel Counts ISO Code 11a Test Method

IP 564, IP 565, IP 577,

D7619, or D8166

≥ 4 µm (c) 11b 11c 18 ≥ 6 µm (c) 11b 11c 16 ≥ 14 µm (c) 11b 11c 14 ≥ 30 µm (c) 11b 11c 13 11a. Per Table 1 "Allocation of scale numbers" of ISO 4406.

11b. (c) indicates that the equipment has been calibrated in accordance with

ISO 11171.

11c. Report.

12. The minimum micro-separometer (MSEP) rating at the point of manufacture shall be as follows:

Product MSEP Rating, min JPTS without additives 90

JPTS with additives 70

3.4 Additives. The type and amount of each additive used shall be reported (see 6.2.d).

3.4.1 Antioxidants. Immediately after processing and before the fuel is exposed to the atmosphere, an approved antioxidant, or a combination of approved anti-oxidant formulations, shall be added to prevent the formation of gums and peroxides after manufacture. The concentration of antioxidant to be added shall be as follows:

a. Not less than 17 mg or more than 24 mg of active ingredient per liter of fuel (6.0 pounds to 8.4 pounds of active ingredient per 1,000 barrels of fuel) to all JPTS fuel that contains hydrogen treated blending stocks.

b. At the option of the supplier, not more than 24 mg of active ingredient per liter of fuel (8.4 pounds of active ingredient per 1,000 barrels of fuel) may be added to the JPTS fuel that does not contain hydrogen treated blending stocks.

3.4.1.1 Approved antioxidants. The following antioxidant formulations are approved:

a. 2,6-ditertiary butyl-4-methylphenol

b. 2,4-dimethyl-6-tertiary butylphenol

c. 2,6-ditertiary butylphenol

d. 75 percent minimum 2,6-tertiary butylphenol

25 percent maximum tertiary and tritertiary butylphenols

e. 72 percent minimum 2,4-dimethyl-6-tertiary butylphenol

28 percent maximum monomethyl and dimethyl tertiary butylphenol

f. 55 percent min 2,4-dimethyl-6-tert-butylphenol and

15 percent min 2,6-di-tert-butyl-4-methylphenol and 30 percent max mixed methyl and dimethyl tert-butylphenols

3.4.2 Metal deactivator additive (MDA). MDA shall not be used in JPTS unless the supplier has obtained written consent from the Procuring Activity, AFPET, and end user. The quantity of MDA, which shall not exceed 5.7 mg of active ingredient per liter of fuel (2 pounds of active ingredient per 1,000 barrels of fuel), shall be declared by the fuel supplier and agreed to by the Procuring Activity, AFPET, and end user. A Certificate of Quality shall show the initial thermal oxidative stability test result, the result after the addition of the MDA, the concentration of MDA (both active ingredient and type used) added, and all results provided to Procuring Activity, AFPET, and end user. The following MDA active ingredient chemistries (N,N’-disalicylidene-1,2-propanediamine or N,N’-disalicylidene-1,2-cyclohexanediamine) have been approved.

3.4.3 Fuel system icing inhibitor. The addition of 0.10 volume % to 0.15 volume % of fuel system icing inhibitor conforming to MIL-DTL-85470 shall be mandatory. The point of injection of the additive and the type of the additive shall be determined by agreement between the Procuring Activity and the supplier.

3.4.4 Special additive. The fuel shall contain from 8.6 mg/L to 11.4 mg/L of fuel (3 pounds/1,000 barrels of fuel to 4 pounds/1,000 barrels of fuel) of Innospec LLC JFA-5® additive.

3.4.5 Corrosion inhibitor/lubricity improver additive. A corrosion inhibitor/lubricity improver additive conforming to MIL-PRF-25017 and approved for JPTS (see 3.4.5.1) shall be blended into the fuel by the supplier. The amount added shall be equal to or greater than the minimum effective concentration and shall not exceed the maximum allowable concentration listed in QPL-25017. The supplier or transporting agency, or both, shall maintain, and upon request, make available to the Government evidence that the corrosion inhibitor/lubricity improver additive used is one of the additives listed in 3.4.5.1.

3.4.5.1 Approved corrosion inhibitor/lubricity improver additives. The following approved corrosion inhibitor/lubricity improver additives in QPL-25017 approved for JPTS are:

a. AVGUARD CI/LI®

b. NALCO 5403®

c. UNICOR J

3.4.6 Premixing of additives. Additives shall not be premixed with other additives before injection into the fuel so as to prevent possible reactions among the concentrated forms of different additives.

3.5 Workmanship. At the time of Government acceptance, the finished fuel shall be clear, bright, and visually free from undissolved water, sediment, or suspended matter. Refer to ASTM D6986. In case of dispute, the fuel shall be clear and bright at 21 °C (70 °F) and meet the Table I particulate matter requirement.

3.6 Recycled, recovered, environmentally preferable, or biobased materials. Recycled, recovered, environmentally preferable, or biobased materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs.

4. VERIFICATION

4.1 Classification of inspection. The inspection requirements specified herein are classified as follows:

a. First article inspection (see 4.2).

b. Conformance inspection (see 4.3).

4.2 First article inspection. The first article inspection consists of the fuel sample passing the one-year storage stability test (see 4.2.3). The test requirements in 3.3.1 shall be complied with prior to bidding on any contract for JPTS meeting the requirements of this specification.

4.2.1 Sample submission. Before a sample (see 4.2.2) is submitted for first article inspection, test data that show the results of tests required by 3.3 and 3.3.1 performed on products produced or blended in an identical manner to the batch sample shall be sent to the Air Force Petroleum Office (mailing address AFPET/PTPS, 2430 C Street, Building 70, Area B, Wright-Patterson AFB OH 45431-7631; email address AFPET.PTPS@us.af.mil). After evaluation of submitter's test results, the Air Force Petroleum Office will respond with a "letter of authorization" providing detailed instructions for the submission of product sample. Once the sample is submitted, the Government will perform tests as necessary to confirm or validate the contractor’s test results. Failure of the storage stability test (see 4.2.3) will render the contractor ineligible for further contract award, pending assurance by the supplier to the satisfaction of the Air Force Petroleum Office that any future product will meet the storage stability requirement.

The storage stability test must then be repeated on the improved product to prove that the product is totally acceptable.

4.2.2 Sample. One 208-liter (55-gallon), 18-gauge DOT 17E uncoated steel drum of fuel from the first batch that represents the product offered to the Government under any contract.

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4.2.3 Storage stability. The storage stability test on the finished fuel shall be conducted by placing 200 liters ± 3.8 liters (53 gallons ± 1 gallon) in a 208-liter (55-gallon), 18-gauge DOT 17E uncoated steel drum. The filled drum shall be stored at 54.5 °C (130 °F) for 1 year (12 months). At 3-month intervals, samples shall be withdrawn and subjected to the thermal stability test (see 4.5.2.1). At the conclusion of the 12-month storage stability test, the fuel shall be subjected to all test requirements of Table I. If the fuel fails any of the 3-month thermal stability tests, the fuel shall be resampled and retested to ensure the initial sample was valid.

Failure of the thermal stability test at any of the 3-month intervals or failure of any of the Table I test requirements at the conclusion of the 12-month storage stability test constitutes a failure of the storage stability test.

4.3 Conformance inspection. Testing for the acceptance of individual lots shall consist of tests for all requirements specified in section 3, except storage stability. Quality conformance inspection shall include the test requirement herein. Contractor shall send a 7.5 liter (2 gallon) sample of each batch of fuel produced under any contract to a designated acquisition activity laboratory for acceptance testing. One copy of the certificate of analysis that lists those items in Table I shall be forwarded to the acquisition activity and the following organization for each batch of fuel acquired under this specification: Air Force Petroleum Office, 2430 C Street, Building 70, Area B Wright-Patterson AFB, OH 45433-7631 or emailed to afpet.ptmt@us.af.mil and afpet.ptps@us.af.mil.

4.3.1 Inspection lot. For acceptance purposes, individual lots shall be examined as specified herein and subjected to tests for all requirements cited in section 3, except for storage stability.

4.3.2 Sampling plans.

4.3.2.1 Sampling for verification of product quality. Each bulk or packaged lot (see 6.5) of material shall be sampled for verification of product quality in accordance with ASTM D4057 or ASTM D4177, or both, except where individual test procedures contain specific sampling instructions.

4.3.2.1.1 Sample containers. A number of jet fuel properties are very sensitive to trace contamination that can originate from sample containers. Refer to ASTM D4306 for recommended sample containers.

4.3.2.2 Sampling for examination of filled containers for delivery. A random sample of filled containers shall be selected from each lot. The samples shall be examined in accordance with 4.5.1.3.

4.3.3 Inspection. Refer to the contract or purchase order for specific inspection requirements.

4.3.4 Batch sample. AFPET reserves the right to have an 18.9-liter (5-gallon) sample of each batch of fuel produced under any contract forwarded to Aerospace Fuels Laboratory (AFPET/PTPLA), 2430 C Street, Building 70, Area B, Wright-Patterson AFB, OH 45433-7631.

This sample will be stored at Wright-Patterson AFB and will represent a retained sample from each batch of fuel produced. All specification tests may be performed any time within 12 months from date of manufacture. Failure of any test will render the contractor ineligible for further batch deliveries, pending verification of the quality of the product to the satisfaction of AFPET. The contracting officer and contractor will be promptly advised of any failures.

4.4 Inspection conditions. Requirements contained in Table I are absolute, as defined in ASTM E29, and shall not be subject to correction for test tolerances. If multiple determinations are made, results falling within any specified repeatability and reproducibility tolerances may be averaged. For rounding off of significant figures, ASTM E29, Absolute Method, shall apply to all tests required by this specification.

4.5 Methods of inspection.

4.5.1 Examination of product.

4.5.1.1 Visual inspection. Samples selected in accordance with 4.3.1 shall be visually examined for compliance with 3.5.

4.5.1.2 Examination of empty containers. Before filled, each empty unit container shall be visually inspected for cleanliness and suitability in accordance with ASTM D4057.

4.5.1.3 Examination of filled containers. Samples taken as specified in 4.3.2 shall be examined for conformance to MIL-STD-290 with regard to fill, closure, sealing, leakage, packaging, packing, and markings. Any container with one or more defects under the required fill shall be rejected.

4.5.2 Chemical and physical tests. To determine conformance to chemical and physical requirements (see 3.3), tests shall be conducted in accordance with the applicable test methods listed in Table I, except for those specified herein.

4.5.2.1 Thermal stability. The thermal stability test shall be conducted in accordance with ASTM D3241 using the test conditions listed in 4.5.2.1.1. Tube deposit ratings shall be measured by an Ellipsometric Tube Rater (ASTM D3241 Annex A3 ETR) or an Interferometric Tube Rater (D3241 Annex A2 ITR). The ETR shall be the referee thermal stability heater tube deposit measurement procedure.

4.5.2.1.1 Test conditions.

a. Heater tube temperature at maximum point: 335 °C.

b. Fuel system pressure: 3.43 MPa (500 psig).

c. Fuel flow rate: 3.0 mL/minute.

d. Test duration: 150 minutes.

4.5.2.1.2 Test results. The fuel sample is acceptable provided that the maximum average deposit thickness over an area of 2.5 mm2 does not exceed 85 nm when measured by an ETR or an ITR and the maximum differential pressure across the test filter does not exceed 25 mm of Hg.

4.5.2.1.3 Reported data. The following data shall be reported.

a. Heater tube deposit thickness (in nm) determined by ETR or ITR.

b. Differential pressure across the test filter.

4.5.2.1.4 TDR. Due to the dwindling supply of parts to properly maintain, the Alcor Tube Deposit Raters (TDRs) are no longer approved for JPTS.

4.6 Test report. Test data required by 4.5.2 shall be reported in the same order as listed in Table I.

5. PACKAGING

5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When actual packaging of materiel is to be performed by DoD or in-house contractor personnel, these personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Point’s packaging activities within the Military Service or Defense Agency, or within the military service’s system commands. Packaging data retrieval is available from the managing Military Department’s or Defense Agency’s automated packaging files, CD-ROM products, or by contacting the responsible packaging activity.

6. NOTES

(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)

6.1 Intended use. The fuel covered by this specification is intended for use in aircraft turbine engines. JPTS fuel requires military-unique additives that are necessary in military weapon systems. This requirement is unique to military aircraft, engine designs, and missions.

6.2 Acquisition requirements. Acquisition documents should specify the following:

a. Title, number, and date of this specification.

b. Packaging requirements (see 5.1).

c. Quantity required and size containers required.

d. Location, injection method, and type of additives, as required.

f. The acquisition activity should state if the contractor is required to perform first article inspection (see 4.2).

6.3 Conversion of metric units. Units of measure have been converted to the International System of Units (Metric) in accordance with ASTM SI10. If test results are obtained in units other than Metric or there is a requirement to report dual units, ASTM SI10 should be used to convert the units.

6.4 Safety Data Sheets. Contracting officers will identify those activities that require copies of completed Safety Data Sheets (SDS) prepared in accordance with

29 CFR 1910.1200.

6.5 Definitions.

6.5.1 Bulk lot. A bulk lot consists of an indefinite quantity of a homogeneous mixture of material offered for acceptance in a single isolated container, or manufactured in a single plant run, through the same processing equipment, with no change in ingredient material.

6.5.2 Packaged lot. A packaged lot consists of an indefinite number of 208-liter (55-gallon) drums or smaller unit packages of identical size and type, offered for acceptance, and filled from the isolated tank that contains a homogeneous mixture of material; or filled with a homogeneous mixture of material manufactured in a single plant run, through the same processing equipment, with no change in ingredient material.

6.6 Subject term (key word) listing.

Additive Antioxidant Corrosion inhibitor Deactivator Flash point Fuel system icing inhibitor Jet fuel Lubricity improver

6.7 Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes.

CONCLUDING MATERIAL

Custodians: Preparing activity:

Air Force – 68 Air Force – 68 DLA – PS (Project 9130-2019-001)

Review activities:

Air Force – 11, 20

NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https://assist.dla.mil.

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METRIC