API MPMS 22.1 2015 pdf download.
Manual of Petroleum Measurement Standards Chapter 22.1 General Guidelines for Developing Testing Protocols for Devices Used in the Measurement of Hydrocarbon Fluids.
1 Scope This document is for the development of testing protocols and to serve as a guideline to document performance characteristics of hydrocarbon fluid measurement related devices. 2 Normative References No other document is identified as indispensable or required for the application of this document. Individual sections of this API MPMS Chapter may include a list of important and relevant publications available in the public domain that may describe or address the technology or technique used by the device or instrument for which the testing protocol is developed. If such a list is included, it should be comprehensive and should serve only as an additional information source for the user of the respective testing protocol document. If the testing protocol document requires a specific test method described in a national or international standard or document (e.g. ASTM, ISO, OIML, etc.), the relevant section or sections of the reference document shall be specified and the title and year of publication of that referenced standard or document shall be listed under Normative References. 3 Terms and Definitions All symbols and/or terms listed under the Terms and Definitions section should be consistent with API MPMS Chapter 1. Any symbol used in the equations, or a term used in sections of API MPMS Chapter 22 that is not defined in API MPMS Chapter 1 shall be defined under the Terms and Definitions section of the document. If a symbol or definition of a term in the document is different from that in API MPMS Chapter 1, the specific reason for the change shall be explained in the document. 4 Field of Application The field of application of testing protocols developed under this chapter should be limited to devices that are used in the measurement of hydrocarbon fluids in the petroleum, energy, and petrochemical industries.
5 Parameter Variations Affecting Device Performance The manufacturer shall define the meter installation requirements, operating range, limits of fluid properties, and environmental conditions for which the device is designed and/or is intended to be used. The range of conditions over which the device is to be tested shall be defined before the test is performed, because extrapolation of the process variable is not permitted for fiscal measurement beyond the range over which the performance of the device is tested. Each section of Chapter 22 developed for a specific type or class of instrument or device should define the parameters that are important for the performance evaluation of the device or instrument and list the parameters and information that should be documented in the test report. Listed below are some of the parameters which may influence the performance of the device to be tested. For certain devices or instruments, some of the parameters listed in this section may have no influence, while there could be other parameters not listed in this section that may influence the performance of the device to be tested. If such parameters can be identified, the testing protocol should define them. The various conditions which may affect the performance of the device may include and are not limited to: — fluid property conditions: fluid density, viscosity, lubricity, abrasiveness, phase, phase fractions, composition, etc.;
6 Mandatory Tests 6.1 Test Conditions Identify the important test condition variables which should be measured and recorded before, during, and/or after each test and document that its value did not vary beyond the allowable limits. Due to limitations of the test facility, it may not be possible to evaluate the influence of certain parameters over the entire range specified for the device. The testing protocol should specify that the test report include a list of those parameters which may affect the performance of the device, but were not tested. The manufacturer shall specify performances within the range that the equipment was tested. 6.2 Test Installation If applicable, the testing protocol should define the type of test installation needed to evaluate the effects of the important test condition variables on device performance. For critical measurements, the test protocol should define the allowable precision limit of the test equipment and which measuring devices should be required to record and document the traceability to a national standard (e.g. NIST). 6.3 Test Results The parameter(s) defining the performance of the device (i.e. test results) shall be recorded during and after each test. Additional recording requirements shall be specified in the individual sections of the testing protocols as needed. 6.4 Baseline (Ideal Condition) Testing In order to identify the influence of certain parameters or changes to the operating condition, ideal or baseline test(s) are necessary. The testing protocol should define the test conditions which may be considered as the ideal or baseline test(s). The document should define, if applicable, the type and frequency of baseline testing needed to verify the reproducibility of the tested device. NOTE The test facility uncertainty should be considered for calculations of acceptable reproducibility.