NF ISO 8068, T60-521 (05/2024)

This document specifies the minimum delivery requirements for turbine lubricants. It should be used in conjunction with ISO 6743-5. This document specifies requirements for a wide variety of lubricants intended for the lubrication of most power generation turbines, including steam turbines, gas turbines, combined cycle and single shaft turbines with a common lubrication system, and hydraulic turbines. However, this document does not specify requirements for wind turbine lubricants, which are covered by ISO 12925-1. The following lubricants are taken into consideration: — mineral oils, API groups I, II, II+, III, including group III from the GTL (gas to liquid) process, and III+. Some API Group II and III oils are suitable for high temperature gas turbines; — synthetic lubricants, esters (API group V) or polyalphaolefins (API group IV), intended for high-temperature gas turbines; — synthetic lubricants, esters (API group V) or polyalphaolefins (API group IV), environmentally acceptable, intended for hydraulic turbines; — low-flammable lubricants of the phosphate ester type.
(Automatic translation from French)