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API MPMS 2.7 Document Information:
Title
Manual of Petroleum Measurement Standards Chapter 2 - Tank Calibration Section 7 - Calibration of Barge Tanks
American Petroleum Institute
Publication Date:
Mar 1, 1991
Scope:
This standard describes three methods for determining the total
and incremental volumes of liquids in barge tanks for coastal and
inland waterway service that have integral hull tank. The three
methods are:
a. Liquid calibration.
b.Calibration by linear measurement.
c.Calibration from barge drawings.
Sections 2.7.7 through 2.7.9 describe procedures and equipment
for obtaining the requisite field measurement data and suggestions
for the orderly and complete recording of field data. Sections
2.7.10 through 2.7.12 include procedures for calculating the total
and incremental tank capacities from fields data and suggestions
for the presentation of capacity tables. Examples of typical
calculations are presented in Appendix A. Terms specific to the
maritime industry are defined in Appendix B.
For barges having independent tanks, refer to other sections of
Chapter 2 for a similar discussion of horizontal, spherical,
upright, and other mobile tanks. For the larger oceangoing barges
and integrated tug barge units, refer to Chapter 2.8A
This standard addresses liquid calibration procedures pertaining
to barges. For details relating to metering systems, installation,
meter proving requirements, and other guidelines relating to liquid
calibration, refer to API Standard 2555.
The capacity tables should be tables should be computed so that
volume is given at standard conditions, that is, at 60° F (15°C).
Appropriate liquid and tape temperature corrections to 60oF (15°C)
should be applied. API Standard 2543 and chapter 17 shall be
consulted for temperature determination in the marine
environment.
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