ASTM WK66752

    Revision of D5191 - 18 Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method)

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    Active Standard: D5191 - 19

    Developed by Subcommittee: D02.08 | Committee D02 | Contact Staff Manager



    WK66752


    Keywords

    dry vapor pressure; gasoline; hydrocarbon-oxygenate blends; mini method; petroleum products; vapor pressure;;

    Rationale

    In several independent meetings of the volatility section of subcommittee D02.08 the effect of high elevation on airation for D5191 VP testing was discussed. At high altitute the ARV fail to verify the instruments due to Ptot showing too low results. At the December meeting in Atlanta, a ruggednes study was presented that demonstrated how the Ptot value decreases with increasing altitude (and lower ambient pressure). In the ruggedness study, 3 reference fluids and 12 gasosline samples were tested. VP data collected at high elevation (4200ft , ambient pressure ~87.5 kPa) and low elevation (400ft pressure is ~102kPa) At sufficient high elevation (e.g. 4200ft) the bias can exceed the method specified tolerance value for reference fluids.

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    Work Item Status

    Date Initiated:
    01-29-2019

    Technical Contact:
    Oliver Sauer

    Status:
    Draft Under Development