Hydrocarbon management HM 20 Proving of aviation fuelling positive displacement meters 2nd edition
HM 20 PROVING OF AVIATION FUELLING POSITIVE DISPLACEMENT METERS 2nd edition October 2013 Published by ENERGY INSTITUTE, LONDON The Energy Institute is a professional membership body incorporated by Royal Charter 2003 Registered charity number 1097899
The Energy Institute (EI) is the chartered professional membership body for the energy industry, supporting over 16 000 individuals working in or studying energy and 250 energy companies worldwide. The EI provides learning and networking opportunities to support professional development, as well as professional recognition and technical and scientific knowledge resources on energy in all its forms and applications. The EI s purpose is to develop and disseminate knowledge, skills and good practice towards a safe, secure and sustainable energy system. In fulfilling this mission, the EI addresses the depth and breadth of the energy sector, from fuels and fuels distribution to health and safety, sustainability and the environment. It also informs policy by providing a platform for debate and scientifically-sound information on energy issues. The EI is licensed by: the Engineering Council to award Chartered, Incorporated and Engineering Technician status; the Science Council to award Chartered Scientist status, and the Society for the Environment to award Chartered Environmentalist status. It also offers its own Chartered Energy Engineer, Chartered Petroleum Engineer and Chartered Energy Manager titles. A registered charity, the EI serves society with independence, professionalism and a wealth of expertise in all energy matters. This publication has been produced as a result of work carried out within the Technical Team of the EI, funded by the EI s Technical Partners. The EI s Technical Work Programme provides industry with cost-effective, value-adding knowledge on key current and future issues affecting those operating in the energy sector, both in the UK and internationally. For further information, please visit http://www.energyinst.org The EI gratefully acknowledges the financial contributions towards the scientific and technical programme from the following companies BG Group Phillips 66 BP Exploration Operating Co Ltd Premier Oil BP Oil UK Ltd RWE npower Centrica Saudi Aramco Chevron Scottish Power ConocoPhillips Ltd Shell UK Oil Products Limited DONG Energy Shell U.K. Exploration and Production Ltd EDF Energy SSE ENI Statkraft E. ON UK Statoil ExxonMobil International Ltd Talisman Energy (UK) Ltd International Power Total E&P UK Limited Kuwait Petroleum International Ltd Total UK Limited Maersk Oil North Sea UK Limited Valero Murco Petroleum Ltd Vattenfall Nexen World Fuel Services However, it should be noted that the above organisations have not all been directly involved in the development of this publication, nor do they necessarily endorse its content. Copyright 2013 by the Energy Institute, London. The Energy Institute is a professional membership body incorporated by Royal Charter 2003. Registered charity number 1097899, England All rights reserved No part of this book may be reproduced by any means, or transmitted or translated into a machine language without the written permission of the publisher. ISBN 978 0 85293 676 4 Published by the Energy Institute The information contained in this publication is provided for general information purposes only. Whilst the Energy Institute and the contributors have applied reasonable care in developing this publication, no representations or warranties, express or implied, are made by the Energy Institute or any of the contributors concerning the applicability, suitability, accuracy or completeness of the information contained herein and the Energy Institute and the contributors accept no responsibility whatsoever for the use of this information. Neither the Energy Institute nor any of the contributors shall be liable in any way for any liability, loss, cost or damage incurred as a result of the receipt or use of the information contained herein. Further copies can be obtained from: Portland Customer Services, Commerce Way, Whitehall Industrial Estate, Colchester CO2 8HP, UK. t: +44 (0)1206 796 351 e: sales@portland-services.com Electronic access to EI and IP publications is available via our website, www.energypublishing.org. Documents can be purchased online as downloadable pdfs or on an annual subscription for single users and companies. For more information, contact the EI Publications Team. e: pubs@energyinst.org
CONTENTS Page Foreword....3 Acknowledgements...4 1 Introduction and scope...5 2 References....6 3 Glossary of terms, unit conversion factors and abbreviations... 7 3.1 Glossary of terms....7 3.2 Unit conversion factors...9 3.3 Abbreviations...9 4 Safety precautions and operational requirements...10 4.1 General...10 4.2 Procedures and proving...10 4.3 Fundamental procedures...10 4.3.1 Safety...10 4.3.2 Calibration of reference standard....11 4.3.3 Product quality...11 4.3.4 Product security....11 4.3.5 Meter performance history...11 5 Proving equipment - reference meter.... 12 5.1 General...12 5.2 Selection of meter and ancillary equipment....12 5.2.1 Design considerations...12 5.2.2 Performance considerations....12 5.3 Calibration of reference meter....13 5.3.1 Frequency of calibration...13 5.3.2 Calibration requirements...13 5.3.3 Meter factors....14 6 Proving - using a reference meter... 15 6.1 General...15 6.2 Methods of proving...15 6.2.1 General...15 6.2.2 Operator control...15 6.3 Product returns...16 6.4 Initial run...16 6.5 Proving runs....16 6.6 Proving runs - operating requirements... 17 6.7 Meter correction factors...17 7 Proving equipment - volumetric proving tank.... 19 7.1 General...19 7.2 Design considerations...19 7.3 Calibration...20 1
8 Proving - using a volumetric proving tank... 21 8.1 General...21 8.2 Conditions for proving....21 8.3 Methods of controlling product flow...22 8.4 Temperature corrections...22 8.5 Drainage...22 8.6 Initial wetting run...23 8.7 Proving runs...23 9 Flow meter with electronic register...25 10 Dynamic slip test and linearity factor....27 10.1 Dynamic slip test - mechanical head... 27 10.2 Linearity factor - electronic head... 27 11 Interpretation of data and analysis of results...28 11.1 Mechanical head meters...28 11.2 Electronic head meters...28 11.3 Reference device monitoring...29 11.4 Electronic meter heads with auto-calibrate functionality...29 12 Proving procedures for overwing fuelling meters....30 12.1 General...30 12.2 Methods for controlling product flow...30 12.3 Proving runs...30 13 Certification for proving by reference meter...31 13.1 General...31 13.2 Proving details and minimum recommended run length....31 13.3 Certification...31 14 Certification for proving by volumetric proving tank...32 14.1 General...32 14.2 Proving details and recommended prover tank capacity...32 14.3 Certification...32 Annexes Annex A Typical layout of a meter calibration rig....34 Annex B Examples of reference meter pressure correction factors....35 Annex C Example reference meter calibration certificate...36 Annex D Examples of reference meter temperature correction factors...37 Annex E Temperature corrections for proving tank measurement...38 Annex F Example meter proving certificate - reference meter method...39 Annex G Example meter proving certificate - volumetric proving tank method...41 Annex H Meter history record...43 2
FOREWORD This publication has been prepared by representatives from the Energy Institute s Aviation and Hydrocarbon Management Committees. It is intended for international use and therefore, some of the procedures contained herein differ to those specified in other parts of the EI s Hydrocarbon Management series that are specifically intended for UK operations. The EI s Hydrocarbon Management series is widely used by the petroleum industry and has received recognition in many countries by consumers and the authorities. The EI s Hydrocarbon Management series is recommended for general adoption but shall be read and interpreted in conjunction with weights and measures, safety and other regulations in force in a particular country in which it is to be applied. Such regulatory requirements shall have precedence over the corresponding clauses in the EI Hydrocarbon Management series except where the requirements of the Hydrocarbon Management series are more rigorous, when its use is recommended. Throughout this publication the procedures are specified with the use of the words shall, should and may. Shall is used to indicate that a provision is mandatory; should is used to indicate that a provision is recommended as good practice, and may is used to indicate that a provision requires consideration, but is optional. Although it is hoped and anticipated that this publication will assist in the proving of aviation fuelling equipment meters, the Energy Institute cannot accept any responsibility, of whatever kind, for damage or loss, or alleged damage or loss, arising or otherwise occurring as a result of the application of the procedures contained herein. The Institute disclaims responsibility for any personal injury, howsoever caused, arising from the use or abuse of any of its publications. Users are invited to send comments, suggestions, or details of experience with this issue to the Technical Manager, Standards, Energy Institute, 61 New Cavendish Street, London W1G 7AR, United Kingdom (technical@energyinst.org). 3
ACKNOWLEDGEMENTS This publication has been prepared by the following technical specialists from the EI s Aviation and Hydrocarbon Management Committees: R. Carson ExxonMobil C. Jones Safe Fuelling International M. Oakes SGS UK Ltd R. Manor Phillips66 J. Rhode AirBP Project co-ordination and editing was undertaken by Martin Hunnybun (EI). 4
1 INTRODUCTION AND SCOPE This publication provides the industry with guidance on the minimum requirements for the proving of positive displacement meters used in aviation fuel handling systems. It is only applicable to positive displacement aircraft fuelling equipment (AFE) meters proved by positive displacement reference meters or volumetric proving tanks. The primary objective is to promote uniformity and consistency both in the proving of AFE meters by reference meter and volumetric proving tank and in the interpretation of results. This publication does not seek to provide a rigorous treatment of meter proving in general and is written taking into account that the meters will only be used to measure aviation turbine fuel. It should be recognised that this publication only sets out the minimum requirements for the proving of positive displacement AFE meters and more rigorous procedures for meter proving may be required in order to meet local requirements. In order to ensure that a meter is reading accurately, it is necessary to carry out periodically a test, or series of tests, in which its readings are compared with measurements obtained from proving equipment that is traceable to national standards. The proving operation consists of measuring the volume of product delivered into a proving tank or through a reference meter and comparing this volume with that indicated by the counter of the meter under test (MUT). The meter volume display is then adjusted by means of a calibration device, or electronic correction factor, to indicate the same volume as measured by the proving tank or reference meter. In practice, a number of corrections may have to be applied to the volumetric tank or reference meter readings to compensate for changes in operating conditions from those under which it was calibrated, e.g. flow rate, viscosity, temperature and pressure. For satisfactory results proving should be carried out by trained, competent personnel. Records should be maintained for each proving exercise for each meter. 5
2 REFERENCES The following publications contain requirements that the user will have to satisfy to meet fully the requirements contained in this publication. EI publications: Guidelines for the identification and control of hazards during the proving of road loading gantry meters HM 10 Meter proving, Field guide to proving a meter with a pipe prover HM 15 Meter proving, Section 7: Calibration of reference meters used for gantry meter proving, Sub-section 7.1: Calibration using a small volume prover HM 16 Meter proving, Section 7: Calibration of reference meters used for gantry meter proving, Sub-section 7.2. Volumetric and gravimetric tank methods API publications: API Manual of Petroleum Measurement Standards Chapters 4.9.1 and 4.9.2 - Method of calibration for displacement and volumetric tank provers The following publications are referenced for additional information purposes only: API Manual of Petroleum Measurement Standards Chapter 11.1 - Temperature and Pressure Volume Correction Factors for Generalized Crude Oils, Refined Products, and Lubricating Oils EI Model Code of Safe Practice, Part 1: The selection, installation, inspection, and maintenance of electrical and non-electrical apparatus in hazardous areas EI Model Code of Safe Practice, Part 15: Area classification code for installations handling flammable fluids National Institute of Standards and Technology Handbook 44 Specifications, tolerances, and other technical requirements for weighing and measuring devices 6