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API MPMS 2.8B
- Complete Document
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Revision / Edition: 1
Chg: W/ REAF
Date: 10/00/09
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MANUAL OF PETROLEUM MEASUREMENT STANDARDS CHAPTER 2 - TANK CALIBRATION SECTION 8B - RECOMMENDED PRACTICE FOR THE ESTABLISHMENT OF THE LOCATION OF THE REFERENCE GAUGE POINT AND THE GAUGE HEIGHT OF TANKS ON MARINE TANK VESSELS
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Comments:
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H028B1
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Superseding Document:
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Page Count:
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21
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In Stock:
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Yes
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Hardcopy Price:
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$ 94.00 |
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Secure PDF Price  : |
$ 94.00 |
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| Document Abstract |
Scope and Field of Application
This recommended practice is intended as a guide for
establishing reference gauge heights during calibration of marine
tank vessels. In many cases this calibration is carried out by
shipyard engineers who may not be fully familiar with petroleum
measurement requirements nor the use of such measurements by
petroleum inspectors and tanker operating personnel. This procedure
is also for recalibration of vessels.
The importance of establishing an accurate reference gauge
height for tanks on marine tank vessels cannot be overstressed.
Such tanks are generally calibrated in ullages (outages) whereas in
measuring quantities remaining onboard (ROB) or free water, it is
frequently more convenient and accurate to measure innages. The
reference gauge height is a necessity in converting ullage to
innage. Also, in determining the volume of the ROB, the reference
gauge height is a factor in every wedge formula, for the
establishment of wedge tables.
API MPMS Chapters 2.7 and 2.8A provide three methods of
calibrating the volumes of tanks on marine tank vessels:
calibration by linear measurement, liquid calibration, and
calibration from vessel drawings. The measurement and establishment
of the reference gauge height, however, can only be determined by
direct linear measurement.
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