API MPMS 17.7 Manual of Petroleum Measurement Standards Chapter 17 - Marine Measurement Section 7 - Recommended Practices for Developing Barge Control Factors (Volume Ratio)
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API MPMS 17.7 Document Information:
Title
Manual of Petroleum Measurement Standards Chapter 17 - Marine Measurement Section 7 - Recommended Practices for Developing Barge Control Factors (Volume Ratio)
American Petroleum Institute
Publication Date:
Sep 1, 1995
Scope:
17.7.1 Scope
This procedure is intended to determine a fixed barge/shore ratio which can be used either when no reliable Vessel Experience Factor (VEF) is available or to verify and validate an existing VEF. The resultant ratio may be used as a "Control Factor" to ascertain a corrected barge volume for comparison against future shore delivery or receipt volumes.
This procedure describes the method for determining the volume ratio of a barge relative to an accurate known volume, measured by shore tank or meter; this will be known as the Control Factor. The procedures and practices relate to action by buyers, sellers, shore terminal operations, barge owners, independent inspectors, and other parties having an interest in the measurements. If the methods stated in this procedure are followed, the measurements will form a reliable basis for comparing relative shore and barge volumes in the production of a Control Factor. The procedures contained in this method apply to a single transfer between the shore and the barge, preferably using a light or medium product or chemical with an approximate volume of at least 80 percent fill of the barge capacity. The procedure may be conducted again at a later date for added assurance or to update the factor for any structural change(s) or damage to the barge.
This method is not a substitute for, nor does it replace, barge calibration (strapping) tables or the need for recalibration.
The gauging procedures outlined herein and known as "Double Reference Gauging" may also be employed in regular inspection of barge and shore quantification as a loss control technique.
This method is intended for inland waterway barges. Ocean-going barges should use VEF method.
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