Innage Tape-and-Bob Procedure

Definition - What does Innage Tape-and-Bob Procedure mean?

Innage Tape-and-Bob Procedure is a procedure for measuring the height or level of petroleum liquids stored in large capacity fixed storage tanks. This procedure uses an innage gauge tape and an innage plum bob to perform the measurement. Once the level of the liquid is known, the volume of the liquid present in the storage tank can be estimated with other known mathematical dimensions of the storage tank. This instrument is part of gauging tapes used in storage tank facilities.

Petropedia explains Innage Tape-and-Bob Procedure

An innage gauging tape comes with an innage plumb bob which is cylindrical in shape and pointed at one end, similar to the shape of a bullet. The tip of the plumb bob reads as zero point. The purpose of innage oil gauge tape is to determine the depth of stored liquids inside storage tanks. This tape measures the height of the liquid from the bottom of the storage tank till the surface of liquid. Innage tapes are cut at the 9 inch mark to accommodate an innage plumb bob. The plumb bob tip has to touch the bottom of the storage tank and that point is considered as zero level, i.e., the starting point to measure the height of liquid till its surface.


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