1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationSurveillance from first commissioning on measuringdevices used in natural gas supply to the installations of the activities under theDirective 2003/87/EC establishing a scheme of
2、 CO2emissions tradingPD CEN/TR 16478:2012National forewordThis Published Document is the UK implementation of CEN/TR 16478:2012.The UK participation in its preparation was entrusted to Technical CommitteeGSE/33, Gas supply.A list of organizations represented on this committee can be obtained onreque
3、st to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 79626 5ICS 75.180.30Compliance with a British Sta
4、ndard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationAmd. No. Date Text affectedPUBLISHED DOCUMENTPD CEN/TR 16478:2012TECHNICAL REPORT RAPPORT T
5、ECHNIQUE TECHNISCHER BERICHT CEN/TR 16478 December 2012 ICS 75.180.30 English Version Surveillance from first commissioning on measuring devices used in natural gas supply to the installations of the activities under the Directive 2003/87/EC establishing a scheme of CO2emissions trading Surveillance
6、 de la mise en service des appareils de mesure utiliss pour la fourniture de gaz naturel aux installations pour les activits sous la Directive 2003/87/CE tablissant un schma dchange dmissions de CO2This Technical Report was approved by CEN on 15 October 2012. It has been drawn up by the Technical Co
7、mmittee CEN/SS S12. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherl
8、ands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploit
9、ation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TR 16478:2012: EPD CEN/TR 16478:2012CEN/TR 16478:2012 (E) 2 Contents Page Foreword 31 Scope 42 Terms and definitions . 43 Surveillance 63.1 General 63.2 Activities of the surveillance for conversion devices,
10、 gas chromatographs and gas meters . 63.3 Planning of surveillance . 63.3.1 General 63.3.2 First commissioning 73.3.3 Specific activities related to warnings from, self-diagnostic means . 73.3.4 Periodical visual inspection/verification/re-lubrication . 73.4 Recalibration for gas chromatograph . 83.
11、4.1 General 83.4.2 Specific requirements for surveillance . 83.5 Specific surveillance activities on gas meters and on gas converters . 93.5.1 Periodical recalibration . 93.5.2 Periodical monitoring of the difference of indication of gas meters 103.5.3 Monitoring of the changing of the difference of
12、 indication of gas meters during operation. 124 Proposal for a European scheme related to common provisions and limit values 144.1 General 144.2 Summary of requirements for surveillance on metrological performance . 14Annex A (informative) National Situations regarding Devices Measuring the Supply o
13、f Gas Natural for the Activities Listed in Annex 1 of ETD 16A.1 BELGIUM (devices in own FluxysEmission Trading Sites) 16A.2 GERMANY. 18A.3 SPAIN 20A.4 FRANCE 22A.5 GREECE 24A.6 ITALY . 26A.7 SLOVAKIA 29Bibliography 30PD CEN/TR 16478:2012CEN/TR 16478:2012 (E) 3 Foreword This document (CEN/TR 16478:20
14、12) has been prepared by “CEN Sector Forum Gas Infrastructure”. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. The document C(2007) 3
15、416 COMMISSION DECISION of 18 July 2007 (2007/589/EC) establishing guidelines for the monitoring and reporting of greenhouse gas emissions pursuant to Directive 2003/87/EC of the European Parliament and of the Council 15 will be used as common guidelines in the determination of the greenhouse gas em
16、issions for all categories of activities listed in the Annex I of the Directive itself. In the fifth paragraph of Clause 3, these guidelines establish that “It shall be ensured that the emission determination is systematically neither over nor under true emissions. Sources of uncertainties shall be
17、identified and reduced as far as practicable. () All metering or other testing equipment used to report monitoring data shall be appropriately applied, maintained and calibrated, and checked.” This Technical Report is intended to be used as a guideline in conjunction with the document C(2007) 3416 a
18、nd to be applied to measuring instruments of natural gas measuring stations based on EN 1776, and possibly stand alone measuring instruments measuring the natural gas used in the categories of activities listed in the Annex I of the Directive 2003/87/EC. Within the European Union, at the time of wri
19、ting, there was no common guideline dealing with how to ensure an established difference of indication of a natural gas metering equipment in the use throughout their technical life. The associated risk: to manage the greenhouse gas emissions data declared by different Member States that are not com
20、pletely comparable because of their determination by calculations based on consumption of natural gas data not homogeneous with regard to the reliability of the accuracy of their measurements. The intent of this Technical Report is to give minimum provisions for surveillance in the use of natural ga
21、s measuring equipment in order to ensure compliance with an established difference of indication, leading to comparable greenhouse gas emissions data. Furthermore, it is a proposal addressed to the Commission and the Member States to reflect on a consistent procedure that would enable an equivalent
22、determination of the CO2amounts of emissions across the EU countries. PD CEN/TR 16478:2012CEN/TR 16478:2012 (E) 4 1 Scope This Technical Report establishes minimum provisions for the surveillance, based on available standards from first commissioning, of devices and systems with measuring function t
23、hroughout their technical life when used in the activities of the categories listed in the Annex I of the European Directive 2003/87/EC. It does so in order to ensure the compliance with the expected maximum allowable difference of indication. This Technical Report applies to devices/systems with th
24、e function to measure: volumetric or mass amount of natural gas consumption (any type of gas meters), volumetric amount of natural gas consumption at specified base conditions (conversion devices), composition of natural gas (gas chromatographs), for calculating, in accordance with the applicable pr
25、ovisions of the guidelines C(2007) 3416, the amount of the CO2 emissions from the source stream of natural gas. Users of this document should be aware that more detailed national recommendations/standards and/or codes of practice as well as national measures possibly approved by National Regulator m
26、ay exist inside the EU Member States. When national regulations have to be applied, this document should not be considered. Except in the aforementioned case, this Technical Report is intended to be applied in association with applicable national recommendations/standards and/or codes of practice se
27、tting out the above mentioned surveillance provisions. In the event of conflict in terms of different requirements in national regulations/standards and in the provisions of this document, the national regulations/standards will take precedence. Referring to the aforesaid Commissions guidelines C(20
28、07) 3416, SFG_I opts for the calculation based method to determine the amount of the CO2emissions. Regarding commercially traded of natural gas, competent authorities may permit the determination of the annual gas consumption leading to evaluation of CO2emissions based solely on the invoiced amount
29、of gas without further individual proof of associated uncertainties, provided that national legislation or the documented application of standards ensures that respective uncertainty requirements for activity data are met for commercial transactions (guidelines C(2007) 3416 -annex 1 7). Referring to
30、 5.2 and to Chapter 16, annex 1 of guidelines C(2007) 3416, for installations with “de minimis” souce streams and with low emissions respectively, the provisions of this document can be waived. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. NOTE
31、 The pilot terms are listed in alphabetic order. The derived terms from a pilot term, if any, are listed in the appropriate order just after the relevant pilot term. 2.1 competent person person who is trained, experienced and approved to perform measuring surveillance activities SOURCE: EN 12186:200
32、0, modified PD CEN/TR 16478:2012CEN/TR 16478:2012 (E) 5 2.2 difference of indication difference between the indicated value Vmof a device with measuring function and the one of a reference instrument Vrfor a specific operating datum of the same measurand expressed as percentage of the value measured
33、 by the reference instrument: 100=rrmVVVD2.3 maximum allowable difference maximum absolute value of the difference of indication 2.4 measuring device measuring instrument capable of measuring a process datum (e.g. gas meters, pressure transducer, pressure indicator, temperature transducer, etc.) 2.5
34、 measuring systems assembly of several measuring devices capable of measuring a process datum via several other process data (e.g. a gas meter + pressure and temperature transducer + conversion device) SOURCE: MID, Directive 2004/22/EC of the European Parliament and the Council of 31 March 2004 on m
35、easuring instruments 2.6 recalibration activities consisting of the verification that the differences of indication of a device with measuring function are within the limits specified in the relevant standard and re-alignment of the indication when needed 2.7 self-diagnostic mean, e.g. software, cap
36、able of warning when the measuring device/system is not operating properly 2.8 self-recalibration recalibration activity carried out automatically by the measuring device itself, e.g. gas chromatograph 2.9 significant parameter measurable characteristic involved in the measuring process (of the meas
37、uring devices/system) which, in case of drift out from pre-established limits, may imply errors of the measuring process Note 1 to entry: For example, when in an ultrasonic gas meter, the transient times reflect a significant different speed of sound for one of the paths compared with the average sp
38、eed of all paths. Note 2 to entry: This document considers following limits for significant parameter: normal thresholds: the maximum and/or minimum values of a significant parameter identified in the type test of a measuring device/system for normal operating conditions; when these limits are met i
39、t is presumed that the necessary conditions for proper measurements occur; care thresholds: values of a significant parameter still ensuring proper measurement but signalling the risk that the significant parameter may further drift and reach the alarm level; PD CEN/TR 16478:2012CEN/TR 16478:2012 (E
40、) 6 alarm thresholds: values of a significant parameter that imply inacceptable differences of indication of the measuring process and that, when they occur, require the activation of corrective actions to reestablish the necessary conditions under which it is presumed that proper measurement proces
41、s occurs. 2.10 Gas Measuring System Operator (GMSO) natural or legal person who is responsible for the operation and maintenance of the measuring system 2.11 warnings visible/perceptible signal indicating that malfunctions have occurred in the measuring device/system 3 Surveillance 3.1 General All t
42、hose activities carried out from the first commissioning of measuring devices/systems throughout their technical life until the last de-commissioning aimed at ensuring that the differences of indication during the operating life are not higher than the maximum allowable difference. 3.2 Activities of
43、 the surveillance for conversion devices, gas chromatographs and gas meters The activities of the surveillance should include: a) first commissioning; b) specific activities related to warnings from self-diagnostic means only where applicable; c) periodical activities: 1) visual inspection, and 2) v
44、erification, and 3) re-lubrication where requested as per the relevant maintenance manual. d) recalibration applicable only to gas chromatograph; periodical recalibration applicable to gas meters and converters; e) periodical monitoring of the difference of indication and, when needed, subsequent re
45、calibration (not applicable to gas chromatograph). The Gas Measuring System Operator fulfilling activities d) does not need to consider the activities e). 3.3 Planning of surveillance 3.3.1 General The stability during operation of the metrological performance depends on both the measuring equipment
46、 and the operating conditions. When establishing the surveillance policy, the following should be considered: a) the specific composition of fuel gas; b) the specific location and layout of the measuring system (e.g. redundancy of measuring devices); c) the reliability of the historical measured-per
47、formance data; PD CEN/TR 16478:2012CEN/TR 16478:2012 (E) 7 d) the measuring-reliability of the stations; e) the impact of the difference of indication on the involved parties (e.g. global amount of measured gas, uncertainty thresholds requested by the document C(2007) 3416, etc.); f) the need for th
48、e continuity of the gas supply, the presence of the auto-diagnosis function; g) any other elements that may affect the measuring-performances of any measuring devices/systems. For the surveillance activities on devices/systems with measuring controls, it should be considered that: h) the first commi
49、ssioning takes place only at initial start up of a single new measuring device/system/stations, i) the periodical monitoring of the difference of indication should be followed by a subsequent recalibration only when needed as described in 3.5.2, and j) the advantage to combine, for each intervention at site, surveillance activities for other equipment of the same installation. 3.3.2 First commissioning The first commissioning should be carried out in accordance with: na
