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Weight In Vacuum (Mass) and Weight In Air: A Unique Solution From QuantityWare

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Oil & gas industry business practices distinguish between quantity values for weight in vacuum (mass) and weight in air. When product is weighed in the real world, the weighing process may neglect the fact that the product displaces surrounding air and thus a reduced weight value (weight in air) is obtained and recorded; for calculations based on mass, such results require correction.
On the other hand, the laboratories that determine crude oil and product densities, usually provide the density in vacuum, which can be utilized to calculate the weight in vacuum (mass).
The SAP QCI calculates the weight in vacuum(mass) for oil products, using a mass-related density value and product volume.
Back in the real world, contractual agreements between sellers and buyers and in some countries, governmental authorities, require the reporting of quantities based upon the “weight in air”.
One way of performing the necessary calculation is to reduce the density in vacuum before the calculation process however, this is not usually a standard procedure and will not work for the varying product density and temperature factors used around the world.
As part of the standard ASTM D 1250-80, tables 8, 26 and 56 were released to convert mass = “weight in vacuum” to “weight in air”; according to ASTM rules, these tables are the current valid standard.
QuantityWare delivers an equation-based solution which provides exactly the same results as the printed ASTM tables 8, 26 and 56. The function-based solution is supplied as standard functionality within the BCP package. Furthermore, QuantityWare offers a quantity conversion solution that includes the calculation of values for weight in air AND weight in vacuum (mass) in parallel.

ASTM Tables 8, 26 and 56

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QuantityWare has developed a computerized implementation of the printed ASTM Tables 8, 26 and 56 (part of “Petroleum Measurement Tables – Intraconversion between volume measures and density measures – ASTM D1250-80, VOl. XI/XII”), which provides conversion factors between U.S. quantities in customary units and metric units of measure. With this implementation, QuantityWare customers using BCP1.0A can easily implement traditionally used conversion routines within their SAP Oil&Gas System – even although they are not conform to the current ASTM D1250-04 standard. The provision of such functions shows QuantityWares’ commitment to support legacy requirements based upon established business and governmental requirements.

RFA Associate Membership

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Today QuantityWare’s RFA (Renewable Fuels Association) associate membership was confirmed. The RFA is a U.S.-based organisation with international membership which is dedicated to furthering the interests of all organisations and companies concerned with the strategically important market of renewable fuels. At the current time, RFA committees are working on the definition of new standards containing VCF (Volume Conversion Factor) definitions for Ethanol and Bio Diesel products. Once defined and released to the industry, QuantityWare will provide accurate implementations of such standards within the functionality of its BCP product. This product can be purchased for use by any organisation running the SAP Oil&Gas solution.

ASTM D633-97

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Implementation of the VCF standard for Road Tars – ASTM D633-97, re-approved 2005 (based upon 60FAH) has been completed. QuantityWare has also programmed own extensions for 15CEL and 20CEL to this standard. The functionality has been integrated into BCP10A and will be delivered in the next CSP which is planned for the middle of April.

Provision of Extended LPG Measurement

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The GPA TP-25 (LPG) was developed to support calculations from a basis of 60 degree Fahrenheit. Using tables 23E and 24E and following the logic of ASTM D 1250-04, procedure 11.1.7.3, QuantityWare has developed an enhancement to allow reliable usage of these tables for base temperatures of 15 and 20 degree Celsius. For more information, please send a mail to info@quantityware.com.

Maintenance Update

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Release of SP2 for BCP 10A using SAP ERP2005. The package contains full support for ASTM D-1250-80, the official release of ABNT NBR5992 and small enhancements to the TP-25 solution. The package is available for all customers with valid maintenance agreements, on request.