GAUGING DATA POSE QUESTION ON STABILITY OF REFERENCE GAUGE HEIGHTS

Frank J. Berto Consulting Engineer San Anselmo, Calif. A major tank gauging calibration project at a 130,000-b/d California refinery revealed that any top-down (outage) tank level measurement has an uncertainty of 0.5 in. A surprising possible conclusion is that this occurs because of random movement of the reference gauge height (RGH). The implications of this are formidable.

Jul 29th, 1991
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