The publication is directed at providing practical and economic procedures for the calibration of underground tanks at service stations in order to obtain an accurate and traceable calibration table suitable for the determination of stock quantities and available ullages from level measurements taken in such tanks.
All aspects of the calibration operation are comprehensively covered, combining in one document the requirements of a code of practice and a field guide for tank calibration. Emphasis is placed throughout on the use of measuring equipment that is traceable to national standards. Careful adherence to the procedures will permit a calibration table to be obtained whose volume uncertainty can be estimated.
Formerly PMM Part II, S7, and reapproved 2001
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