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Title: VERIFICATION/CERTIFICATION Of Devices Used In Liquid Measurement And Implications Of How Mercury Issues Will Impact These Processes
Author: Anne Walker Brackett,
Source: 2014 International School of Hydrocarbon Measurement
Year Published: 2014
Abstract: In the past the standards from the American Petroleum Institute (API) and the American Society for Testing and Measurement (ASTM) provided specifications for inst ruments and equipment. Simple compliance with these standards was not enough. Therefore, a system of verification and/or ce rtification of equipment used in measurement of liquids was in stituted. These requirements were written into the standards as they came up for review. An excellent example of such a standard is Chapt er 3.1.A. Standard Practice for the Manual Gauging of Petroleum and Petroleum Products of the APIs Manual of Petroleum Measurement. 3.1.A. calls for field verification of working tapes against against a National Institute of Standards and Technology traceable master tape when it is new and every year thereafter. This is an example of the requirements to insure the instrument and the equipment meets the specifications of each standa rd. It is important to understand the definitions of traceability, verification, and certific ation before discussing the specifications for equipment used in liquid measurement

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