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About This Item
Full Description
1.1 This test method covers the calculated flash point formula, which represents a means for directly estimating the flash point temperature of distillate fuels from Test Method D2887 data. The value computed from the equation is termed the “calculated flash point.” The calculated flash point formula is applicable to diesel fuel samples based on a correlation to Test Method D93 over the range from 47 to 99°C, and to jet fuel samples based on a correlation to Test Method D56 and Test Method D3828 over the range from 35 to 67°C.
1.2 The calculated flash point formula is valid for diesel and jet fuels with an IBP between 90 and 162°C (194 and 324°F), Test Method D2887 5% recovery temperature between 136 and 207°C (277 and 405°F), and Test Method D2887 10% recovery temperature between 142 and 222°C (288 and 432°F). For each flash point test method (Test Method D56, Test Method D93, and Test Method D3828) a separate equation has been established. See 4.4 for a detailed overview of the simulated distillation IBP, 5%, and 10% ranges per equation.
1.3 A calculated diagnostic parameter, not exceeding a given threshold value, is a prerequisite for acceptance of the calculated flash point.
1.4 The diagnostic parameter MSPEX (Mean Summed Prediction Error) checks the sample compliance, based on reconstruction of TIBP, T5%, and T10% of the sample, via a calculation procedure. A value for MSPEX not exceeding the threshold level of 1.9°C is a prerequisite for accepting the calculated flash point, CFP.
Document History
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ASTM D7215-22
Standard Test Method for Calculated Flash Point from Simulated Distillation Analysis of Distillate Fuels- Most Recent
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ASTM D7215-16
Standard Test Method for Calculated Flash Point from Simulated Distillation Analysis of Distillate Fuels- Historical Version
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ASTM D7215-08(2013)
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Standard Test Method for Calculated Flash Point from Simulated Distillation Analysis of Distillate Fuels- Historical Version
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ASTM D7215-08
Standard Test Method for Calculated Flash Point from Simulated Distillation Analysis of Distillate Fuels- Historical Version