January 2008

Letters to the Editor

Letters to the Editor

TVP, RVP and other important acronyms The October 2007 article "Predicting the true vapor pressure of LPG and natural gasoline" propagates a bias that I believe pervasively exists in a number of tech..

TVP, RVP and other important acronyms The October 2007 article "Predicting the true vapor pressure of LPG and natural gasoline" propagates a bias that I believe pervasively exists in a number of technical articles, codes, standards and regulations worldwide that will have to be addressed by the global industry. Recently, this has been dubbed "the billion-dollar bias" for the reasons outlined below. This is not the fault of the authors, whose otherwise excellent article is based on the (I believe) erroneous basis assumption that "an error was discovered in the API nomograph-calculated values of TVP, such that the Rvp was not equal to the TVP at 38°C, as should be expected, given t

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