ESI Fuel & Energy Group, LLC. (ESIFEG) abides by the standards set forth within the Aviation Fuel Quality Requirements for Jointly Operated Systems, or AFQRJOS, Check List. The Check List represents the most stringent requirements of the DEF STAN and ASTM specifications for JET A-1. By definition, any product meeting Check List requirements will also meet either DEF STAN or ASTM specifications.
Fuel delivered embodies the most stringent requirements of the following specifications:
(a) DEF STAN 91-91
(b) ASTM D1655 Kerosene Type Jet A-1,
The AFQR JOS check List is recognized by eight of the major aviation fuel suppliers – BP, Chevron Texaco, Exxon Mobil, Kuwait Petroleum, Shell, Statoil and Total – as the basis of their international supply of virtually all civil aviation fuels outside North America and former Soviet Union.