light ends The most volatile portions of a carbon
and hydrogen mixture, the low boiling components
that boil off first in distillation. Opposite of heavy
ends.
Reid Vapor Pressure (RVP) The measure of
pressure exerted by a product on the interior of a
special container due to its tendency to vaporize.
ullage The amount a tank, or container, lacks of
being full.
volume correction The correction of measured
quantity of product, determined by gaging at
observed temperature and gravity and reference to
a gage table, to net quantity of product at 60F
(16C) after deducting bottom water and sediment.
A-2
QM 5180
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