1、Designation:D721508(Reapproved 2013)Standard Test Method forCalculated Flash Point from Simulated Distillation Analysisof Distillate Fuels1This standard is issued under the fixed designation D7215;the number immediately following the designation indicates the year oforiginal adoption or,in the case
2、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.1.Scope1.1 This test method covers the calculated flash pointformula,which represents a means for directly est
3、imating theflash point temperature of distillate fuels from Test MethodD2887 data.The value computed from the equation is termedthe“calculated flash point.”The calculated flash point formulais applicable to diesel fuel samples based on a correlation toTest Method D93 over the range from 47 to 99C,an
4、d to jetfuel samples based on a correlation to Test Method D56 andTest Method D3828 over the range from 35 to 67C.1.2 The calculated flash point formula is valid for diesel andjet fuels with an IBP between 90 and 162C(194 and 324F),Test Method D2887 5%recovery temperature between 136 and207C(277 and
5、 405F),and Test Method D2887 10%recoverytemperature between 142 and 222C(288 and 432F).For eachflash point test method(Test Method D56,Test Method D93,and Test Method D3828)a separate equation has been estab-lished.See 4.4 for a detailed overview of the simulateddistillation IBP,5%,and 10%ranges per
6、 equation.1.3 A calculated diagnostic parameter,not exceeding agiven threshold value,is a prerequisite for acceptance of thecalculated flash point.1.4 The diagnostic parameter MSPEX(Mean SummedPrediction Error)checks the sample compliance,based onreconstruction of TIBP,T5%,and T10%of the sample,via
7、acalculation procedure.A value for MSPEXnot exceeding thethreshold level of 1.9C is a prerequisite for accepting thecalculated flash point,CFP.NOTE1It is important to note that calculated flash point results,at thistime,are not recognized by regulatory organizations in verifying confor-mance to appl
8、icable regulations.NOTE2The calculated flash point derived from simulated distillationdata depends upon the accuracy of determination of the IBP temperatureand the 5%and 10%recovery temperatures.NOTE3If the users specification requires a defined flash point testmethod other than this test method,nei
9、ther this test method nor any othertest method should be substituted for the prescribed test method withoutobtaining comparative data and an agreement from the specifier.1.5 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.6 Th
10、is 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.2.Referenced Documents2.
11、1 ASTM Standards:2D56 Test Method for Flash Point by Tag Closed Cup TesterD93 Test Methods for Flash Point by Pensky-MartensClosed Cup TesterD975 Specification for Diesel Fuel OilsD1655 Specification for Aviation Turbine FuelsD2887 Test Method for Boiling Range Distribution of Pe-troleum Fractions b
12、y Gas ChromatographyD3828 Test Methods for Flash Point by Small Scale ClosedCup TesterD6708 Practice for Statistical Assessment and Improvementof Expected Agreement Between Two Test Methods thatPurport to Measure the Same Property of a Material3.Terminology3.1 Definitions:3.1.1 diesel fuel,nfuel for
13、 diesel engines,as described inSpecification D975.3.1.2 flash point,nlowest temperature,corrected to apressure of 101.3 kPa(760 mm Hg),at which application of anignition source causes the vapors of a specimen of the sampleto ignite under specified conditions of test.3.1.3 jet fuel(kerosene type),nav
14、iation turbine fuel asdescribed in Specification D1655.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.04.0K on Correlative Methods.Current edition approved May 1,2013.Published August 2013.Orig
15、inallyapproved in 2008.Last previous edition approved in 2008 as D7215 08.DOI:10.1520/D7215-08R13.2For 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
16、Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.4simulated distillation,n distillation,simulated bygas chromatography,to obtain a boiling range distribution.3.2 Definitions of Terms Specific to This Standard:3.2.1 calculated flash point(CFP),nflash point calculatedusing this test method from the IBP,5%,and 10%recoverytemperature obtained from simulated distillation according toTest Method D2887.3.2.
