Active Standard ASTM D4293 | Developed by Subcommittee: D02.C0.01
Book of Standards Volume: 05.02
Historical (view previous versions of standard)
This specification covers the requirements for phosphate ester based fire resistant fluids for use in turbine lubrication. Only unused fluid is defined before it is installed in the turbine while fluids used in electrohydraulic control (EHC) systems is not. The use of this type of fluid is restricted to turbine systems that have been designed or modified to accommodate phosphate ester lubricants. Fire tests shall be performed which measure and describe the properties of the phosphate esters in response to heat and flame under controlled laboratory conditions and should not be considered or used for the description or appraisal of the fire hazard of the fluids under actual fire conditions.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
Significance and Use
This is a specification to define the requirements of fire resistant fluids for use in turbine lubrication. This specification defines phosphate ester fluids which will give satisfactory lubrication performance in a turbine engine. However, it is possible that phosphate esters that do not meet this specification may give adequate performance in the field.
Fire resistant fluids are more difficult to ignite and show little tendency to propagate a flame. The term “fire resistant fluid” does not mean that the fluid will not burn.
The normal fluid operating temperature will be in the range of 54 to 65°C and will experience a maximum temperature of about 93°C during flow across the turbine bearings whose housing temperature may be as high as 343°C.
1.1 This specification covers the requirements for phosphate ester based fire resistant fluids for use in turbine lubrication.
1.2 The specification defines only unused fluid before it is installed in the turbine. It is not intended for fluids used in electrohydraulic control (EHC) systems.
1.3 The use of this type of fluid is restricted to turbine systems that have been designed or modified to accommodate phosphate ester lubricants.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 The following precautionary caveat pertains only to Sections 5 and 5.3. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester
D97 Test Method for Pour Point of Petroleum Products
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D665 Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water
D892 Test Method for Foaming Characteristics of Lubricating Oils
D974 Test Method for Acid and Base Number by Color-Indicator Titration
D1744 Test Method for Determination of Water in Liquid Petroleum Products by Karl Fischer Reagent
D2619 Test Method for Hydrolytic Stability of Hydraulic Fluids (Beverage Bottle Method)
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
Federal Test Method Standard791B,Method5308 Corrosiveness and Oxidation Stability of Light Oils (Metal Strip)