Work Item
ASTM WK83789
Revision of D7566-22 Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons
Rationale
This ballot is being proposed to clarify that the Annex A2, A6, and A7 FAME (fatty acid methyl ester) requirement is applicable only at the point of manufacture. FAME is limited to 5 mg/kg maximum when producing HEFA, CHJ, and HC-HEFA SPK synthetic blending components. However, when synthetic blending component is moved in a conventional jet fuel supply chain there is a possibility that it may come in contact with a jet fuel containing an incidental amount of FAME (i.e. up to 50 mg/kg per ASTM D1655). If that were to happen, the synthetic blending component may no longer meet the 5 mg/kg maximum requirement once it is downstream of the point of manufacture and therefore (as D7566 is currently written), would not be eligible for blending. In accordance with standard industry practice, quality assurance requirements for synthetic blend components in the distribution system are covered in other documents such as EI 1533 (to be published shortly), EI/JIG 1530, ATA103, JIG 2, API 1595, etc. Final finished blends of conventional jet fuel with HEFA, CHJ, and/or HC-HEFA SPK synthetic blending components would still be required to meet the 50 mg/kg maximum limit set forth in ASTM D1655 Table 3 “Identified Incidental Materials”.
Work Item Status
Date Initiated: 10-16-2022
Technical Contact: Gurhan Andac
Item: 008
Ballot: D02.J0 (22-05)
Status: In Balloting