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首页> 外文会议>International pipeline conference >PETROBRAS TRANSPORTE S.A. - TRANSPETRO'S ULTRASONIC FLOW METER RECALIBRATION PROGRAM
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PETROBRAS TRANSPORTE S.A. - TRANSPETRO'S ULTRASONIC FLOW METER RECALIBRATION PROGRAM

机译：PETROBRAS TRANSPORTE S.A.-TRANSPETRO的超声波流量计重新校准程序

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In recent years, the use of ultrasonic flow meters has gained worldwide acceptance for natural gas custody transfer applications. TRANSPETRO has also increased significantly the use of this technology because of the important role it plays in reducing lost and unaccounted for (LUAF) gas. A plan of this equipment is essential to guarantee the proper operation and the specified accuracy of the meter runs as well as mandatory in order to comply with a national regulatory agency (ANP) ordinance, which requires ultrasonic meters to be recalibrated every 30 months. This interval can be extended if the agency approves a study submitted by the operator, presenting a reasonable historical metrological performance the meters. In 2009, the Measurement Technical Committee of the Pipeline Research Council International (PRCI) published a report recommending ultrasonic meters to be recalibrated based on time-in-service, but on periodic assessment of the diagnostic parameters provided by the equipment. The report states that if these diagnostic logs indicate performance change, the meter should be cleaned and the performance re-checked; the recalibration should be considered only if the performance change remains after the cleaning. Carrying out this procedure guarantees, according to the report, the calibration is within the uncertainty of the calibration facility for a period of at least six years. Although the several PRCI reports recommend some diagnostic parameters to be followed, their names, categories and limits vary from manufacturer to manufacturer. A narrow relationship with each manufacturer must be established in order to define the finest practices. The periodic basis of the diagnostic logs collection is also an important concern. The state-of-art on following the diagnostic parameters is to have them integrated to the SCADA system, random problems can be neglected if manual collection is performed from time to time. The objective of this paper is to present TRANSPETRO's ultrasonic flow meters recalibration program based on PRCI reports and manufacturers' recommendations, as well as show the company's strategy for the diagnostic parameters collection.
机译：近年来，超声流量计的使用已在天然气贸易交接应用方面获得了世界范围的认可。 TRANSPETRO还显着增加了该技术的使用，因为它在减少损失和未解释的（LUAF）气体方面起着重要的作用。该设备的计划对于保证仪表的正确运行和规定的精度以及对仪表的强制性至关重要，以符合国家监管机构（ANP）条例，该条例要求每30个月对超声波仪表进行一次校准。如果该机构批准了操作员提交的研究，并提出了合理的历史计量性能，则可以延长该时间间隔。 2009年，国际管道研究委员会（PRCI）的测量技术委员会发布了一份报告，建议根据使用时间（但要定期评估设备提供的诊断参数）对超声波仪表进行重新校准。该报告指出，如果这些诊断日志表明性能发生了变化，则应清洁仪表并重新检查性能;否则，请执行以下操作。仅在清洁后仍保持性能变化的情况下，才应考虑重新校准。根据报告，执行此程序可确保校准至少在校准设备的不确定性范围内，为期六年。尽管一些PRCI报告建议遵循一些诊断参数，但是它们的名称，类别和限制因制造商而异。为了定义最佳实践，必须与每个制造商建立狭窄的关系。诊断日志收集的定期基础也是一个重要的问题。遵循诊断参数的最新技术是将它们集成到SCADA系统中，如果不时进行手动收集，则可以忽略随机问题。本文的目的是根据TRCIPETRO报告和制造商的建议介绍TRANSPETRO的超声波流量计重新校准程序，并展示该公司的诊断参数收集策略。

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