Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
All the technical contents of this standard are mandatory.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 6537-2006 No. 3 jet fuel. The following main changes have been made with respect to GB 6537-2006:
"Partial provisions are compulsory” is changed to "All contents of this standard are mandatory”;
——“Abbreviations” is added (see Clause 3);
——The methods for determining total sulfur, flash point, density, viscosity and net heat are added (see Clause 2 and Table 1);
——The indexes of luminometer number are canceled (see Table 1 of Edition 2006);
——For civil aviation fuel, the requirements for viscosity and water reaction at 20℃ are canceled (see Table 1 of Edition 2006);
——The upper limit of the electrical conductivity is changed from 450pS/m to 600pS/m (see Table 1);
——The contents of T1601 in Annex A are canceled (see Annex A);
——The contents about synthetic alkanes fuels are added (see Clause 1, Clause 2, Clause 3, 4.3, Annex B and Annex C).
This standard was proposed by and is under the jurisdiction of the National Energy Administration.
The previous editions of this standard are as follows:
——GB 6537-1994, GB 6537-2006.
No. 3 jet fuel
Caution——The production, transportation, storage and use of products specified in this standard can be hazardous if suitable precautions are not observed. This standard does not purport to address all of the safety concerns, if any, associated with the product. The users are under the obligation to adopt proper safety and health measures and shall ensure conformance with the requirements specified in national relevant regulations.
1 Scope
This standard specifies the requirements and test methods, inspection rules, marking, packaging, transportation, storage and safety of No. 3 jet fuel produced by processing natural crude oil or its distillate oil and the No. 3 jet fuel produced by blending with synthetic hydrocarbon kerosene fraction.
It is applicable to No. 3 jet fuel for aviation turbine engines.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 190 Packing symbol of dangerous goods
GB/T 261 Determination of flash point - Pensky-Martens closed cup method
GB/T 265 Petroleum products - Determination of kinematic viscosity and calculation of dynamic viscosity
GB/T 380 Determination of sulfur content in petroleum products (lamp method)
GB/T 382 Test method for smoke point of kerosene and aviation turbine fuel
GB/T 384 Determination of calorific value of petroleum products
GB/T 509 Engine fuels - Determination of existent gum
GB/T 1792 Determination of mercaptan sulfur in gasoline, kerosine, jet and distillate fuels - Potentiometric method
GB/T 1793 Standard test method for water reaction of aviation fuels
GB/T 1884 Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method
GB/T 1885 Petroleum measurement tables
GB/T 2429 Aviation fuels - Calculation of net heat of combustion
GB/T 2430 Standard test method for freezing point of aviation fuels
GB/T 3555 Petroleum products - Determination of Saybolt color - Saybolt chromometer method
GB/T 4756 Petroleum liquids - Manual sampling
GB/T 5096 Petroleum products - Corrosiveness to copper - Copper strip test
GB/T 5208 Determination of flash point - Rapid equilibrium closed cup method
GB/T 6536 Standard test method for distillation of petroleum products at atmospheric pressure
GB/T 6539 Standard test methods for electrical conductivity of aviation and distillate fuels
GB/T 8019 Standard test method for gum content in fuels by jet evaporation
GB/T 9169 Standard test method for thermal oxidation stability of aviation turbine fuels - JFTOT procedure
GB/T 11132 Standard test method for hydrocarbon types in liquid petroleum products by fluorescent indicator adsorption
GB/T 11133 Standard test method for determination of water in petroleum products, lubricating oils and additives - Coulometric Karl Fischer titration method
GB/T 11140 Standard test method for sulfur in petroleum products by wavelength dispersive X-ray fluorescence spectrometry
GB/T 12574 Jet fuels - Determination of total acid number
GB 13690 General rule for classification and hazard communication of chemicals
GB/T 17040 Standard test method for sulfur in petroleum and petroleum products by energy dispersive X-ray fluorescence spectrometry
GB/T 21789 Petroleum products and other liquids - Determination of flash point - Abel closed cup method
GB/T 21929 Test method for flash point by tag closed cup tester
GB 30000.7-2013 Rules for classification and labeling of chemicals - Part 7: Flammable liquids
GB/T 30515 Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of dynamic viscosity
SH/T 0023 Jet fuels - test for silver strip corrosion
SH/T 0093 Determination of solid particle pollutant in jet fuel
SH 0164 Petroleum products - Rules in packaging, handling, delivery and acceptance
NB/SH/T 0174 Petroleum products and hydrocarbon solvents - Detection of thiols and other sulfur species - Doctor test
SH/T 0181 Standard test method for naphthalene hydrocarbons in jet fuels by ultraviolet spectrophotometry
SH/T 0182 Determination of copper content in light petroleum (spectrophotometric method)
SH/T 0253 Determination of total sulfur content in light petroleum products (coulometric method)
SH/T 0558 Petroleum fractions - Determination of boiling range distribution - Gas chromatography
SH/T 0604 Crude petroleum and petroleum products - Determination of density - Oscillating U-tube method
SH/T 0606 Standard test method for hydrocarbon types in middle distillates (mass spectrometry)
SH/T 0616 Determination method for water separation index of jet fuel (portable separometer method)
SH/T 0656 Determination of carbon, hydrogen and nitrogen in petroleum products and lubricants (elemental analyzer method)
SH/T 0657 Standard test method for trace nitrogen in liquid petroleum hydrocarbons by syringe/inlet oxidative combustion and chemiluminescence detection
SH/T 0687 Standard test method for measurement of lubricity of aviation turbine fuels by the ball-on-cylinder lubricity evaluator (BOCLE)
SH/T 0689 Standard test method for determination of total sulfur in light hydrocarbons motor fuels and oils by ultraviolet fluorescence
SH/T 0770 Standard test method for freezing point of aviation fuels (automatic phase transition method)
NB/SH/T 0842 Standard test method for sulfur in gasoline and diesel fuel by monochromatic wavelength dispersive X-ray fluorescence spectrometry
NB/SH/T 0892 Determination of trace element in middle distillate fuel - Inductively coupled plasma atomic emission spectrometric method
ASTM D3338 Standard test method for estimation of net heat of combustion of aviation fuels
ASTM D7359 Standard test method for total fluorine, chlorine and sulfur in aromatic hydrocarbons and their mixtures by oxidative pyrohydrolytic combustion followed by ion chromatography detection (combustion ion chromatography-CIC)
IP 585 Determination of fatty acid methyl esters (FAME), derived from bio-diesel fuel, in aviation turbine fuel - GC-MS with selective ion monitoring/scan detection method
IP 590 Determination of fatty acid methyl esters (FAME), derived from bio-diesel fuel, in aviation turbine fuel - HPLC evaporative light scattering detector method
3 Abbreviations
For the purposes of this document, the following abbreviations apply.
FT- SPK: Fischer Tropsch - Synthesized Paraffinic Kerosine (FT-SPK)
HEFA-SPK: Hydroprocessed Esters and Fatty Acids - Synthesized Paraffinic Kerosine)
4 Requirements and test methods
4.1 The raw materials, production processes and additives used in the production of products shall comply with the specified approval procedures. See Annex A for the requirements of additives.
4.2 The technical requirements and test methods for No. 3 jet fuel are shown in Table 1.
Table 1 Technical requirements and test methods for No. 3 jet fuel
Item Index Test method
Appearance Clear and transparent at room temperature, and free of insoluble water and solid matter under visual inspection Visual inspection
Color ≥ +25a GB/T 3555
Composition
Acid value (in KOH)/(mg/g) ≤ 0.015 GB/T 12574
Aromatic hydrocarbons (volume fraction)/% ≤ 20.0b GB/T 11132
Olefin (volume fraction)/% ≤ 5.0 GB/T 11132
Total sulfur (mass fraction)/% ≤ 0.20 SH/T 0689c
Mercaptan sulfur d (mass fraction)/% ≤ 0.002 0 GB/T 1792
Or doctoral test Pass NB/SH/T 0174
Straight-run component volume fraction/% Report —
Hydrofining component volume fraction /% Report —
Hydrocracking component volume fraction /% Report —
Synthetic hydrocarbon component volume fraction /% Report —
Volatility
Distillation range: GB/T 6536e
Initial boiling point (℃) Report
10% recovered temperature/℃ ≤ 205
20% recovered temperature/℃ Report
50% recovered temperature/℃ ≤ 232
90% recovered temperature/℃ Report
Final boiling point /℃ ≤ 300
Residual amount (volume fraction)/% ≤ 1.5
Loss amount (volume fraction)/% ≤ 1.5
Flash point (closed)/℃ ≥ 38 GB/T 21789f
Density (20℃)/(kg/m3)
775~880
GB/T 1884,
GB/T 1885g
Fluidity
Freezing point/℃ ≤ -47 GB/T 2430h
Kinematic viscosity/(mm2/s) GB/T 265i
20℃ ≥ 1.25 j
-20℃ ≤ 8.0
Combustibility
Net heat value/(MJ/kg) ≤ 42.8 GB/T 384k
Smoke point/mm ≥ 25.0 GB/T 382
Or when the smoke point is at least 20mm,
Naphthalene hydrocarbon content (volume fraction) /% ≤
3.0
SH/T 0181
Corrosion
Copper corrosion (100℃, 2h)/grade ≤ 1 GB/T 5096
Silver strip corrosion 1(50℃, 4h)/grade ≤ 1 SH/T 0023
Stability
Thermal stability (260℃, 2.5h) GB/T 9169
Pressure drop / kPa ≤ 3.3
Pipe wall rating/level
Less than 3 and without green rust or abnormal sediment
Cleanliness
Gum content/(mg/100mL ≤ 7 GB/T 8019m
Water reaction n GB/T 1793
Interface situation / grade ≤ 1b
Degree of separation /grade ≤ 2
Solid particle contaminant content / (mg /L)≤ 1.0 SH/T 0093
Electrical conductivity
Electrical conductivity o/(pS/m) 50~600 GB/T 6539
Water separation index SH/T 0616
No antistatic agent added ≥ 85
or antistatic agent added ≥ 70
Lubricity
Wear scar diameter WSD/mm ≤ 0.65p SH/T 0687
For jet fuels subjected to copper refining, the copper ion content in oil sample shall be determined by the method specified in SH/T 0182, which shall be less than or equal to 150μg/kg.
Requirements for jet fuel containing synthetic hydrocarbon shall meet those specified in 4.3.
a The color of civil jet fuel is “report”. During the process from the supplier to the customer, if the color changes when the jet fuel is received by customer, the following requirements are met: when the initial Saybolt color is greater than +25, the color change is not greater than 8; when the initial Saybolt color is between 25 and 15, the color change is not greater than 5; when the initial Saybolt color is less than 15, the color change is not greater than 3.
b For civil aviation fuels, the volume fraction is required to be no more than 25.0%.
c The sulfur content may also be determined by the methods given in GB/T 380, GB/T 11140, GB/T 17040, SH/T 0253 and NB/SH/T 0842. In case of any dispute, SH/T 0689 shall prevail.
d Either mercaptan sulfur or doctoral test may be carried out. When the mercaptan sulfur and the doctoral test are controversial, the mercaptan sulfur shall prevail.
e All fuels complying with this standard shall be classified in Group 4 according to the method specified in GB/T 6536, and the condenser temperature shall be 0℃ to 4℃.
f The flash point may also be determined by the methods given in GB/T 21929 and GB/T261; in case of dispute, GB/T 21789 shall prevail.
g The density may also be determined by the method given in SH/T 0604; in case of any dispute, GB/T 1884 and GB/T 1885 shall prevail.
h The freezing point may also be determined by the method given in SH/T 0770; in case of any dispute, GB/T 2430 shall prevail.
i The viscosity may also be determined by the method given in GB/T 30515; in case of any dispute, GB/T 265 shall prevail.
j For civil aviation fuels, the viscosity index at 20℃ is not required.
k The net heat value may also be determined by the methods given in GB/T 2429 and ASTM D3338; in case of any dispute, GB/T 384 shall prevail.
l For civil aviation fuel, this index may not be required.
m The gum may also be determined by the method given in GB/T 509; in case of any dispute, GB/T 8109 shall prevail.
n For civil aviation fuels, this index is not required.
o Fuel is required to be greater than 150pS/m (20℃) when leaving the plant. If antistatic agent is not added in the fuel, this index is not required.
p For civil aviation fuel, the WSD shall not greater than 0.85mm.
4.3 The technical requirements for No. 3 jet fuel containing FT-SPK or HEFA-SPK synthetic hydrocarbon components shall comply with the following requirements in addition to the requirements of Table 1:
The synthetic hydrocarbon components of FT-SPK and HEFA-SPK are as shown in Annex B and Annex C respectively. In the No. 3 jet fuel containing synthetic hydrocarbon components, the volume fraction of FT-SPK or HEFA-SPK components shall not be higher than 50%; the aromatic hydrocarbons volume fraction shall not be less than 8.0%, the difference between 50% recovered temperature and 10% recovered temperature is not less than 15℃, and the difference between 90% recovered temperature and 10% recovered temperature is not less than 40℃.
Foreword i
1 Scope
2 Normative references
3 Abbreviations
4 Requirements and test methods
5 Inspection rules
6 Marking, packaging, transportation and storage
7 Safety
Annex A (Normative) Name and addition of additives
Annex B (Normative) Fischer tropsch-synthesized paraffinic kerosine (FT-SPK)
Annex C (Normative) Hydroprocessed esters and fatty acids-synthesized paraffinic kerosine (HEFA-SPK)
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
All the technical contents of this standard are mandatory.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB 6537-2006 No. 3 jet fuel. The following main changes have been made with respect to GB 6537-2006:
"Partial provisions are compulsory” is changed to "All contents of this standard are mandatory”;
——“Abbreviations” is added (see Clause 3);
——The methods for determining total sulfur, flash point, density, viscosity and net heat are added (see Clause 2 and Table 1);
——The indexes of luminometer number are canceled (see Table 1 of Edition 2006);
——For civil aviation fuel, the requirements for viscosity and water reaction at 20℃ are canceled (see Table 1 of Edition 2006);
——The upper limit of the electrical conductivity is changed from 450pS/m to 600pS/m (see Table 1);
——The contents of T1601 in Annex A are canceled (see Annex A);
——The contents about synthetic alkanes fuels are added (see Clause 1, Clause 2, Clause 3, 4.3, Annex B and Annex C).
This standard was proposed by and is under the jurisdiction of the National Energy Administration.
The previous editions of this standard are as follows:
——GB 6537-1994, GB 6537-2006.
No. 3 jet fuel
Caution——The production, transportation, storage and use of products specified in this standard can be hazardous if suitable precautions are not observed. This standard does not purport to address all of the safety concerns, if any, associated with the product. The users are under the obligation to adopt proper safety and health measures and shall ensure conformance with the requirements specified in national relevant regulations.
1 Scope
This standard specifies the requirements and test methods, inspection rules, marking, packaging, transportation, storage and safety of No. 3 jet fuel produced by processing natural crude oil or its distillate oil and the No. 3 jet fuel produced by blending with synthetic hydrocarbon kerosene fraction.
It is applicable to No. 3 jet fuel for aviation turbine engines.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 190 Packing symbol of dangerous goods
GB/T 261 Determination of flash point - Pensky-Martens closed cup method
GB/T 265 Petroleum products - Determination of kinematic viscosity and calculation of dynamic viscosity
GB/T 380 Determination of sulfur content in petroleum products (lamp method)
GB/T 382 Test method for smoke point of kerosene and aviation turbine fuel
GB/T 384 Determination of calorific value of petroleum products
GB/T 509 Engine fuels - Determination of existent gum
GB/T 1792 Determination of mercaptan sulfur in gasoline, kerosine, jet and distillate fuels - Potentiometric method
GB/T 1793 Standard test method for water reaction of aviation fuels
GB/T 1884 Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method
GB/T 1885 Petroleum measurement tables
GB/T 2429 Aviation fuels - Calculation of net heat of combustion
GB/T 2430 Standard test method for freezing point of aviation fuels
GB/T 3555 Petroleum products - Determination of Saybolt color - Saybolt chromometer method
GB/T 4756 Petroleum liquids - Manual sampling
GB/T 5096 Petroleum products - Corrosiveness to copper - Copper strip test
GB/T 5208 Determination of flash point - Rapid equilibrium closed cup method
GB/T 6536 Standard test method for distillation of petroleum products at atmospheric pressure
GB/T 6539 Standard test methods for electrical conductivity of aviation and distillate fuels
GB/T 8019 Standard test method for gum content in fuels by jet evaporation
GB/T 9169 Standard test method for thermal oxidation stability of aviation turbine fuels - JFTOT procedure
GB/T 11132 Standard test method for hydrocarbon types in liquid petroleum products by fluorescent indicator adsorption
GB/T 11133 Standard test method for determination of water in petroleum products, lubricating oils and additives - Coulometric Karl Fischer titration method
GB/T 11140 Standard test method for sulfur in petroleum products by wavelength dispersive X-ray fluorescence spectrometry
GB/T 12574 Jet fuels - Determination of total acid number
GB 13690 General rule for classification and hazard communication of chemicals
GB/T 17040 Standard test method for sulfur in petroleum and petroleum products by energy dispersive X-ray fluorescence spectrometry
GB/T 21789 Petroleum products and other liquids - Determination of flash point - Abel closed cup method
GB/T 21929 Test method for flash point by tag closed cup tester
GB 30000.7-2013 Rules for classification and labeling of chemicals - Part 7: Flammable liquids
GB/T 30515 Petroleum products - Transparent and opaque liquids - Determination of kinematic viscosity and calculation of dynamic viscosity
SH/T 0023 Jet fuels - test for silver strip corrosion
SH/T 0093 Determination of solid particle pollutant in jet fuel
SH 0164 Petroleum products - Rules in packaging, handling, delivery and acceptance
NB/SH/T 0174 Petroleum products and hydrocarbon solvents - Detection of thiols and other sulfur species - Doctor test
SH/T 0181 Standard test method for naphthalene hydrocarbons in jet fuels by ultraviolet spectrophotometry
SH/T 0182 Determination of copper content in light petroleum (spectrophotometric method)
SH/T 0253 Determination of total sulfur content in light petroleum products (coulometric method)
SH/T 0558 Petroleum fractions - Determination of boiling range distribution - Gas chromatography
SH/T 0604 Crude petroleum and petroleum products - Determination of density - Oscillating U-tube method
SH/T 0606 Standard test method for hydrocarbon types in middle distillates (mass spectrometry)
SH/T 0616 Determination method for water separation index of jet fuel (portable separometer method)
SH/T 0656 Determination of carbon, hydrogen and nitrogen in petroleum products and lubricants (elemental analyzer method)
SH/T 0657 Standard test method for trace nitrogen in liquid petroleum hydrocarbons by syringe/inlet oxidative combustion and chemiluminescence detection
SH/T 0687 Standard test method for measurement of lubricity of aviation turbine fuels by the ball-on-cylinder lubricity evaluator (BOCLE)
SH/T 0689 Standard test method for determination of total sulfur in light hydrocarbons motor fuels and oils by ultraviolet fluorescence
SH/T 0770 Standard test method for freezing point of aviation fuels (automatic phase transition method)
NB/SH/T 0842 Standard test method for sulfur in gasoline and diesel fuel by monochromatic wavelength dispersive X-ray fluorescence spectrometry
NB/SH/T 0892 Determination of trace element in middle distillate fuel - Inductively coupled plasma atomic emission spectrometric method
ASTM D3338 Standard test method for estimation of net heat of combustion of aviation fuels
ASTM D7359 Standard test method for total fluorine, chlorine and sulfur in aromatic hydrocarbons and their mixtures by oxidative pyrohydrolytic combustion followed by ion chromatography detection (combustion ion chromatography-CIC)
IP 585 Determination of fatty acid methyl esters (FAME), derived from bio-diesel fuel, in aviation turbine fuel - GC-MS with selective ion monitoring/scan detection method
IP 590 Determination of fatty acid methyl esters (FAME), derived from bio-diesel fuel, in aviation turbine fuel - HPLC evaporative light scattering detector method
3 Abbreviations
For the purposes of this document, the following abbreviations apply.
FT- SPK: Fischer Tropsch - Synthesized Paraffinic Kerosine (FT-SPK)
HEFA-SPK: Hydroprocessed Esters and Fatty Acids - Synthesized Paraffinic Kerosine)
4 Requirements and test methods
4.1 The raw materials, production processes and additives used in the production of products shall comply with the specified approval procedures. See Annex A for the requirements of additives.
4.2 The technical requirements and test methods for No. 3 jet fuel are shown in Table 1.
Table 1 Technical requirements and test methods for No. 3 jet fuel
Item Index Test method
Appearance Clear and transparent at room temperature, and free of insoluble water and solid matter under visual inspection Visual inspection
Color ≥ +25a GB/T 3555
Composition
Acid value (in KOH)/(mg/g) ≤ 0.015 GB/T 12574
Aromatic hydrocarbons (volume fraction)/% ≤ 20.0b GB/T 11132
Olefin (volume fraction)/% ≤ 5.0 GB/T 11132
Total sulfur (mass fraction)/% ≤ 0.20 SH/T 0689c
Mercaptan sulfur d (mass fraction)/% ≤ 0.002 0 GB/T 1792
Or doctoral test Pass NB/SH/T 0174
Straight-run component volume fraction/% Report —
Hydrofining component volume fraction /% Report —
Hydrocracking component volume fraction /% Report —
Synthetic hydrocarbon component volume fraction /% Report —
Volatility
Distillation range: GB/T 6536e
Initial boiling point (℃) Report
10% recovered temperature/℃ ≤ 205
20% recovered temperature/℃ Report
50% recovered temperature/℃ ≤ 232
90% recovered temperature/℃ Report
Final boiling point /℃ ≤ 300
Residual amount (volume fraction)/% ≤ 1.5
Loss amount (volume fraction)/% ≤ 1.5
Flash point (closed)/℃ ≥ 38 GB/T 21789f
Density (20℃)/(kg/m3)
775~880
GB/T 1884,
GB/T 1885g
Fluidity
Freezing point/℃ ≤ -47 GB/T 2430h
Kinematic viscosity/(mm2/s) GB/T 265i
20℃ ≥ 1.25 j
-20℃ ≤ 8.0
Combustibility
Net heat value/(MJ/kg) ≤ 42.8 GB/T 384k
Smoke point/mm ≥ 25.0 GB/T 382
Or when the smoke point is at least 20mm,
Naphthalene hydrocarbon content (volume fraction) /% ≤
3.0
SH/T 0181
Corrosion
Copper corrosion (100℃, 2h)/grade ≤ 1 GB/T 5096
Silver strip corrosion 1(50℃, 4h)/grade ≤ 1 SH/T 0023
Stability
Thermal stability (260℃, 2.5h) GB/T 9169
Pressure drop / kPa ≤ 3.3
Pipe wall rating/level
Less than 3 and without green rust or abnormal sediment
Cleanliness
Gum content/(mg/100mL ≤ 7 GB/T 8019m
Water reaction n GB/T 1793
Interface situation / grade ≤ 1b
Degree of separation /grade ≤ 2
Solid particle contaminant content / (mg /L)≤ 1.0 SH/T 0093
Electrical conductivity
Electrical conductivity o/(pS/m) 50~600 GB/T 6539
Water separation index SH/T 0616
No antistatic agent added ≥ 85
or antistatic agent added ≥ 70
Lubricity
Wear scar diameter WSD/mm ≤ 0.65p SH/T 0687
For jet fuels subjected to copper refining, the copper ion content in oil sample shall be determined by the method specified in SH/T 0182, which shall be less than or equal to 150μg/kg.
Requirements for jet fuel containing synthetic hydrocarbon shall meet those specified in 4.3.
a The color of civil jet fuel is “report”. During the process from the supplier to the customer, if the color changes when the jet fuel is received by customer, the following requirements are met: when the initial Saybolt color is greater than +25, the color change is not greater than 8; when the initial Saybolt color is between 25 and 15, the color change is not greater than 5; when the initial Saybolt color is less than 15, the color change is not greater than 3.
b For civil aviation fuels, the volume fraction is required to be no more than 25.0%.
c The sulfur content may also be determined by the methods given in GB/T 380, GB/T 11140, GB/T 17040, SH/T 0253 and NB/SH/T 0842. In case of any dispute, SH/T 0689 shall prevail.
d Either mercaptan sulfur or doctoral test may be carried out. When the mercaptan sulfur and the doctoral test are controversial, the mercaptan sulfur shall prevail.
e All fuels complying with this standard shall be classified in Group 4 according to the method specified in GB/T 6536, and the condenser temperature shall be 0℃ to 4℃.
f The flash point may also be determined by the methods given in GB/T 21929 and GB/T261; in case of dispute, GB/T 21789 shall prevail.
g The density may also be determined by the method given in SH/T 0604; in case of any dispute, GB/T 1884 and GB/T 1885 shall prevail.
h The freezing point may also be determined by the method given in SH/T 0770; in case of any dispute, GB/T 2430 shall prevail.
i The viscosity may also be determined by the method given in GB/T 30515; in case of any dispute, GB/T 265 shall prevail.
j For civil aviation fuels, the viscosity index at 20℃ is not required.
k The net heat value may also be determined by the methods given in GB/T 2429 and ASTM D3338; in case of any dispute, GB/T 384 shall prevail.
l For civil aviation fuel, this index may not be required.
m The gum may also be determined by the method given in GB/T 509; in case of any dispute, GB/T 8109 shall prevail.
n For civil aviation fuels, this index is not required.
o Fuel is required to be greater than 150pS/m (20℃) when leaving the plant. If antistatic agent is not added in the fuel, this index is not required.
p For civil aviation fuel, the WSD shall not greater than 0.85mm.
4.3 The technical requirements for No. 3 jet fuel containing FT-SPK or HEFA-SPK synthetic hydrocarbon components shall comply with the following requirements in addition to the requirements of Table 1:
The synthetic hydrocarbon components of FT-SPK and HEFA-SPK are as shown in Annex B and Annex C respectively. In the No. 3 jet fuel containing synthetic hydrocarbon components, the volume fraction of FT-SPK or HEFA-SPK components shall not be higher than 50%; the aromatic hydrocarbons volume fraction shall not be less than 8.0%, the difference between 50% recovered temperature and 10% recovered temperature is not less than 15℃, and the difference between 90% recovered temperature and 10% recovered temperature is not less than 40℃.
Contents of GB 6537-2018
Foreword i
1 Scope
2 Normative references
3 Abbreviations
4 Requirements and test methods
5 Inspection rules
6 Marking, packaging, transportation and storage
7 Safety
Annex A (Normative) Name and addition of additives
Annex B (Normative) Fischer tropsch-synthesized paraffinic kerosine (FT-SPK)
Annex C (Normative) Hydroprocessed esters and fatty acids-synthesized paraffinic kerosine (HEFA-SPK)
