1、BRITISH STANDARDBS EN 14884:2005Air quality Stationary source emissions Determination of total mercury: automated measuring systemsThe European Standard EN 14884:2005 has the status of a British StandardICS 13.040.40g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g
2、54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Tue Apr 18 04:14:58 BST 2006, Uncontrolled Copy, (c) BSIBS EN 14884:2005This British Standard was published under the authority of the Standards Policy and
3、 Strategy Committee on 26 January 2006 BSI 26 January 2006ISBN 0 580 47719 3National forewordThis British Standard is the official English language version of EN 14884:2005. The UK participation in its preparation was entrusted by Technical Committee EH/2, Air quality, to Subcommittee EH/2/1, Statio
4、nary source emissions, which has the responsibility to:A list of organizations represented on this subcommittee can be obtained on request to its secretary.The UK, as a member of CEN, is obliged to publish EN 14884:2005 as a British Standard. However, attention is drawn to the fact that during the d
5、evelopment of this European Standard, the UK consistently voted against its approval as a European Standard.Total-mercury monitors commonly include a conversion system to convert all gaseous oxidized mercury into the elemental form. The performance of some of these conversion systems can be less tha
6、n ideal, for example, in sources with high concentrations of acid components (such as stacks with high SO2emissions). It is in the opinion of the UK committee that EN 14884:2005 does not provide sufficient practical guidance on how to deal with such problems. Therefore the UK recommends that EN 1488
7、4:2005 should be used in conjunction with the operator-manual for each Automated Measuring System (AMS) used. The user of EN 14884:2005 should obtain the necessary information from the AMS supplier to ensure a continuing, valid performance of the AMS in the specific stack conditions to which it is a
8、pplied.As identified in the scope, EN 14884:2005 is not applicable as a stand-alone document and is to be used in conjunction with EN 14181. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change,
9、 and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, page i, a blank page, the EN title page, pages 2 to 18, an inside back cover and a back cover.The BSI c
10、opyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Tue Apr 18 04:14:58 BST 2006, Uncontrolled Copy, (c) BSIBS EN 14884:2005iCross-referencesThe British Standards which implement
11、international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not
12、purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Licensed Copy: Wang Bin, na, Tue Apr 18 04:14:58 BST 2006, Uncontrolled Copy, (c) BSIblankLic
13、ensed Copy: Wang Bin, na, Tue Apr 18 04:14:58 BST 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14884December 2005ICS 13.040.40English VersionAir quality - Stationary source emissions - Determination of totalmercury: automated measuring systemsQualit de lair - Emi
14、ssions de sources fixes -Dtermination de la concentration en mercure totale:systmes automatiques de mesureLuftbeschaffenheit - Emissionen aus stationren Quellen -Bestimmung der Gesamtquecksilber-Konzentration:Automatische MesseinrichtungenThis European Standard was approved by CEN on 28 November 200
15、5.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on a
16、pplication to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has
17、 the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovak
18、ia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for C
19、EN national Members.Ref. No. EN 14884:2005: ELicensed Copy: Wang Bin, na, Tue Apr 18 04:14:58 BST 2006, Uncontrolled Copy, (c) BSIEN 14884:2005 (E) 2 Contents Page Foreword 3 Introduction4 1 Scope .5 2 Normative references .5 3 Terms and definitions.5 4 Principle.6 5 AMS performance criteria for QAL
20、 1 .6 6 AMS location .7 7 Calibration and validation of the AMS (QAL2) 7 7.1 General 7 7.2 Calibration procedure.7 7.2.1 Parallel measurements with SRM 7 7.2.2 Automatic recording of AMS output signals.8 7.3 Establishing the calibration function 8 8 Ongoing quality assurance during operation (QAL 3)
21、 .8 9 Annual surveillance test (AST) 8 Annex A (informative) Example of calculation of the calibration function and of the variability test .9 A.1 General 9 A.2 Data evaluation .9 A.2.1 General 9 A.2.2 Calculation of measured values of the SRM at standard conditions11 A.2.3 Calibration function 12 A
22、.2.4 Calibrated values of AMS .13 A.2.5 Conversion of data to standard conditions 13 A.2.6 Valid calibration range14 A.2.7 Test of variability.15 Bibliography.18 Licensed Copy: Wang Bin, na, Tue Apr 18 04:14:58 BST 2006, Uncontrolled Copy, (c) BSIEN 14884:2005 (E) 3 Foreword This European Standard (
23、EN 14884:2005) has been prepared by Technical Committee CEN/TC 264 “Air quality”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2006, and conflictin
24、g national standards shall be withdrawn at the latest by June 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, F
25、rance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Tue Apr 18 04:14:58 BST 2006, Uncontrolled Copy, (c) BSIEN 14884:2005
26、 (E) 4 Introduction This European Standard describes the quality assurance procedures related to Automated Measuring Systems (AMS) for the determination of total mercury in flue gas, in order to meet the uncertainty requirements on measured values given by regulations, national or other legislation.
27、 This European Standard is only applicable in conjunction with the general document on quality assurance of AMS described in EN 14181, and provides indications, which are specific to measurements of total mercury. The calibration and validation of mercury AMS are performed by parallel measurements w
28、ith the reference manual method described in EN 13211. The calibration and validation of mercury AMS are performed by parallel measurements with the reference manual method described in EN 13211. The species of mercury (Hg0and Hg2+) and the physical occurrence (gaseous, in dust or in droplets) can v
29、ary significantly depending on the type of process to be monitored. A total mercury AMS or a gaseous mercury AMS can be chosen. Whether or not a gaseous mercury AMS can fulfil the requirements for total mercury depends on the process and sampling location. Licensed Copy: Wang Bin, na, Tue Apr 18 04:
30、14:58 BST 2006, Uncontrolled Copy, (c) BSIEN 14884:2005 (E) 5 1 Scope This European Standard specifies specific requirements on automated measuring systems (AMS) for monitoring of total mercury. It is derived from EN 14181, which is the general document on the quality assurance of AMS. It is only ap
31、plicable in conjunction with EN 14181. This European Standard sets specific requirements for the quality assurance levels and annual surveillance test as specified in EN 14181, for mercury AMS used for proving that the mercury emissions from a source are compliant with emission limits between 0,03 m
32、g/m3and 0,5 mg/m31)(standard conditions) in ducted gaseous streams. This European Standard is applicable by direct correlation with the standard reference method (SRM) described in EN 13211. This European Standard is primarily developed for emissions from waste incinerators. From a technical point o
33、f view, it may be applied to other processes, for which measurement at an emission limit is required with defined uncertainty. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited appli
34、es. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13211:2001, Air quality Stationary source emissions Manual method of determination of the concentration of total mercury EN 14181:2004, Stationary source emissions Quality assurance of au
35、tomated measuring systems EN ISO 14956, Air quality Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty (ISO 14956:2002) EN ISO/IEC 17025:2005, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:20
36、05) 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 13211:2001 and EN 14181:2004 and the following apply. 3.1 automated measuring system (AMS) measuring system permanently installed on site for continuous monitoring of emissions NOTE 1 An AMS
37、 is a method, which is traceable to a reference method. NOTE 2 Apart from the analyser, an AMS includes facilities for taking samples (e.g. sample probe, sample gas lines, flow meters, regulators, delivery pumps) and for sample conditioning (e.g. dust filter, moisture removal devices, converters, di
38、luters). This definition also includes testing and adjusting devices that are required for regular functional checks. 1)m3expressed as m3under dry conditions, normalized to 273 K and 101,3 kPa and 11,0 % (volume fraction) O2(unless otherwise stated). Licensed Copy: Wang Bin, na, Tue Apr 18 04:14:58
39、BST 2006, Uncontrolled Copy, (c) BSIEN 14884:2005 (E) 6 NOTE 3 For the purpose of this European Standard, AMS means automated mercury measuring system. 3.2 emission limit value limit value related to the uncertainty requirement NOTE For the EU directives 1 and 2 it is the daily emission value that r
40、elates to an uncertainty requirement. 3.3 standard conditions reference values for a dry gas at a pressure of 101,3 kPa and a temperature of 273 K 3.4 Standard Reference Method (SRM) method described and standardised to define an air quality characteristic, temporarily installed on site for verifica
41、tion purposes 3.5 tsamplesample time period of the automated measurement system 3.6 tcycletime of the total measurement cycle of the monitor 4 Principle This European Standard is derived from the general standard on the quality assurance of AMS (EN 14181). It shall be applied in conjunction with tha
42、t standard. This European Standard only deals with the specific aspects related to mercury monitoring. According to EN 14181, three different levels of quality assurance are defined, designated as Quality Assurance Levels (QAL). These levels cover the suitability of an AMS for its measuring task (QA
43、L1), the validation of the AMS following its installation (QAL2), the control of the AMS during its ongoing operation on an industrial plant (QAL3). An annual Surveillance Test (AST) is also defined. 5 AMS performance criteria for QAL 1 The performance of the AMS shall be assessed in a suitability t
44、est referred to as QAL1. Suitability tests for an AMS are usually carried out within the framework of certification or type approval procedures. The suitability test comprises a separate laboratory test and a three-month field test in a typical application. NOTE The requirements for values of perfor
45、mance characteristics will be specified in a European Standard on AMS certification. The manufacturer shall ensure that the delivered AMS has the same characteristics as the tested devices. It shall be proven by use of EN ISO 14956 that the total uncertainty of the measured results obtained by the A
46、MS meets the specifications for uncertainty stated in the applicable regulations. This total uncertainty is calculated by summing all the relevant uncertainty components arising from the individual performance characteristics in an appropriate manner. The AMS suitability shall be evaluated for the p
47、lant specific conditions taking into account the anticipated variations of the physical environment and interferences. Cross sensitivities of interferents in the gas to be measured are to be checked alone and together with mercury and its compounds. If there is any interaction then a restricted use
48、of an AMS at specific emission sources is possible. Licensed Copy: Wang Bin, na, Tue Apr 18 04:14:58 BST 2006, Uncontrolled Copy, (c) BSIEN 14884:2005 (E) 7 6 AMS location The AMS shall be located in such a way that the gas sample, which is monitored, has a representative content of total mercury. T
49、he location shall be chosen according to the manufacturer recommendations, and may depend on the AMS principle of detection. The AMS shall be located to ensure that there is minimum interference with the SRM and vice versa. The working platform(s) for the AMS shall provide an easy and safe access to the AMS in order to allow frequent inspection and quality assurance procedure implementation. If the particulate mercury amounts to more than 2% of the total mercury the working platform for the SRM shall comply with the requirements of Annex A of EN 13284-1:2001
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