ASTM_D_2272_-_14a.pdf

Designation:D227214aStandard Test Method forOxidation Stability of Steam Turbine Oils by RotatingPressure Vessel1This standard is issued under the fixed designation D2272;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method2utilizes an oxygen-pressured vessel toevaluate the oxidation stability of new and in-service turbineoils having the same composition(base stock and additives)inthe presence of water and a copper catalyst coil at 150C.1.2 Appendix X1 describes a new optional turbine oil(unused)sample nitrogen purge pretreatment procedure fordetermining the percent residual ratio of RPVOT value for thepretreated sample divided by RPVOT value of the new(untreated)oil,sometimes referred to as a“%RPVOT Reten-tion.”This nitrogen purge pretreatment approach was designedto detect volatile antioxidant inhibitors that are not desirablefor use in high temperature gas turbines.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3.1 ExceptionOther units are provided in parentheses(psi,grams,and inches),because they are either the industryaccepted standard or the apparatus is built according the figuresin this standard,or both.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.For specificwarning statements,see 6.2,6.4,6.5,6.6,and 6.10.2.Referenced Documents2.1 ASTM Standards:3B1 Specification for Hard-Drawn Copper WireD943 Test Method for Oxidation Characteristics of InhibitedMineral OilsD1193 Specification for Reagent WaterD4742 Test Method for Oxidation Stability of GasolineAutomotive Engine Oils by Thin-Film Oxygen Uptake(TFOUT)D6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System Performance2.2 Energy Institute Standard:4IP 229 Determination of the Relative Oxidation Stability byRotating Bomb of Mineral Turbine Oil2.3 ISO Standard:5ISO 3170 Petroleum LiquidsManual Sampling3.Summary of Test Method3.1 The test oil,water,and copper catalyst coil,contained ina covered glass container,are placed in a vessel equipped witha pressure gauge.The vessel is charged with oxygen to a gaugepressure of 620 kPa(90 psi,6.2 bar)(see Eq 1),placed in aconstant-temperature oil bath set at 150C or dry block taken to150C(Fig.1 and Fig.2),and rotated axially at 100 rpm at anangle of 30 from the horizontal.3.2 The number of minutes required to reach a specific dropin gauge pressure is the oxidation stability of the test sample.100 kPa5 1.00 bar5 14.5 psi(1)1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.09.0C on Oxidation of Turbine Oils.Current edition approved Oct.1,2014.Published October 2014.Originallyapproved in 1964.Last previous edition approved in 2014 as D2272 14.DOI:10.1520/D2272-14A.2von Fuchs,G.H.,Claridge,E.L.,and Zuidema,H.H.,“The Rotary BombOxidation Test for Inhibited Turbine Oils,”Materials Research and Standards,MTRSA(formerly ASTM Bulletin),No.186,December 1952,pp.4346;vonFuchs,G.H.,“Rotary Bomb Oxidation Test,”Lubrication Engineering,Vol 16,No.1,January 1960,pp.2231.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from Energy Institute,61 New Cavendish St.,London,WIG 7AR,U.K.,http:/www.energyinst.org.uk.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Significance and Use4.1 The estimate of oxidation stability is useful in control-ling the continuity of this property for batch acceptance ofproduction lots having the same operation.It is not intendedthat this test method be a substitute for Test Method D943 or beused to compare the service lives of new oils of differentcompositions.4.2 This test method is also used to assess the remainingoxidation test life of in-service oils.Method A5.Apparatus5.1 Method A,Liquid Bath RPVOTOxidation Vessel,Glass Sample Container with Four-Hole PTFE Disk,Hold-Down Spring,Catalyst-Coil,Pressure Gauge,Thermometer,an