1、BRITISH STANDARD _ Guide for procurement of power station equipment - Part 4: Boiler auxiliaries - Section 2: Gas-air, steam-air and gas-gas heaters The European Standard EN 4551042: 1999 has the status of a British Standard ICs 27.060.30; 27.100 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED
2、 BY COPYRIGIPT LAW BS EN 45510-4-2:1999 BS EN 45510-4-2:1999 direction of the Engineering Amd.No. Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 1999 National foreword Date Comments This British Standard is the English language ve
3、rsion of EN 45510-4-2:1999. The UK participation in its preparation was entrusted to Technical Committee E/-/20, Power engineering steering committee, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monit
4、or related international and European developments and promulgate interpretation, or proposais for change, and keep the UK interests informed them in the UK A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which
5、 implement international or European publications referred to in this document may be found in the BSI Standards Catalogue iuider the section entitled “International Standards Correspondence Index”, or by using the “Find facility of the BSI Standards Electronic Catalogue. A British Standard does not
6、 purport to include all the necessary provicions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside fr
7、ont cover, the EN title page, pages 2 to 17 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. O BSI 09-1999 ISBN O 680 32505 9 STD-BSI BS EN 4551O-q-2-ENGL 1979 = Lb24bb9 079b13 974 II EUROPEAN sTANDAR;D EN 455104-2 NORME EUROPENNE EUT
8、ZOP- NORM April 1999 ICs 27.040; 27.060.30; 27.100 English version Guide for procurement of power station equipment - Part 4 Boiler auxiliaries - Section 2: GasaEC CEN Central Secretariat: rue de Stassart, 36 E1050 Brussels CENELEC Centsal Secretariat: rue de Stassart, 35 EL1050 Brussels O 1999 CENK
9、ENELEC AU rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members. Ref No. EN 455104-2:1999 E Page 2 EN 4551e, Gma,ny, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Noway, Portugal, Spain, Sweden, Su?itZ Part 1: Common Claus
10、es; Part 2-1: Electrical equipment - Power tm,nSformms; Part 2-2: Electrical equipment - Unintermptible power supplies.; Part 2-3: Electrical equipment - Statwnuy batteries and chargers; Pa.rt 2-4: Electrical equipment - High power static convertors; Part 2-5: Eectmcul equipment - Motors; Part 2-6:
11、Electrical equipment - Genmaors; Part 2- E Ekctm:cal equipment - Swikhgear and control gea,r; Part 2-8: Electrical equipment - Power cabk; Part 2-9: Electrical equipment - Cabling systems; Part 3-1: Boilers - Water tube boilers; Part 3-2: Boilers - Shell boilers; Part 3-3: Boilers - Boilers 7uith.fl
12、uidized bed.fring; Part 4-1: Boiler auxiliafries - Equipment for reduction of dust em.iSsions; Pa,rt 4-2: Boiler u,wiliaes - Gasair, steam Part 4-3: Boiler auxiliaries - Dra,ught plant; Part 4-4: Boiler auxiliaries - Fuel preparation equipment; Part 4-5: Boiler a,uxiliaries - Coal handing and bulk s
13、tomge plant; Part 4-6: Boiler a)uxilia.ries - Rue gas desulphurisation (De-SO,) plant; Pa,rt 4-7: Boiler auxiliaries - Ash handiing plant; Part 4-8: Boiler auxiliaries - Dust harzcUirg plant; Pa.rt 4-9: Boiler auxiliaries - Sootblowe); Pa,rt 4-10: Boiler auxilia,ries - Flue gas denitrifica,tion (De-
14、NO,) plant; Part 5-1: Turbines - Steam turbines; Pa,rt 5-2: Turbines - Gas turbines; Part 5-3: Turbines - Wind turbines; Part 5-4: Turbines - Hydraulic turbines, storage pumps and pump-turbina; Part 6-1: Turbine auim:liaries - Deaera.tors; Part 6-2: Turbine a,uxiliaries - Feedwater katms; Part 6-3:
15、Turbine a,mXa,ries - Condenser plant; Part 6-4: Turbine u.uxiliaries - Pumps; Part 6-5: Turbine auxilia,ries - Dm/ cooling systems; Part 6-6: Turbine auxiliaries - Wet and wet/d-ry cooli.ng towers; Part 6-7: Turbine a.uxilia,ries - Moisture separator reheaters; Part 6-8: Turbine a,uxiliaries - Crane
16、s; Pad 6-9: Turbine a,m:lia,ries - CoolCng uia.ter systems; Part 7-1: Pipmmrk and vaLves - High pressuw piping systems; Part 7-2: Pipework and valves - Boiler and high pressure piping valva; Part 8-1: Control and instrumentation; EN 4551 0-1 conta,ins thse clauses common to au Ute a,bove guides givi
17、ng the provisions of a non equipment specific nature for use in ihe procurement of power station pla,nt. EN 45510 .Is th responsibility ofJTFPE. The so called “common clauses”, as appropriate, adso appew in italics in the documents specifk to particular equipment. In this pide, words in bold type in
18、dicate that they havi! th meanng given in the definitions, clause 3. In this guide, wors and sentences not in italics are specific to this guide and refer to the particular equipment covered. O BSI 09-1999 Contents Foreword 1 2 3 3.1 3.2 3.3 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5 6 7 7.1 7.2 7.3 7.
19、4 7.5 7.6 7.7 8 8.1 8.2 9 9.1 9.2 9.3 9.4 9.5 9.6 10 10.1 10.2 10.3 Scope Normative references Definitions Organizational terms Technical terms General terms Brief overall project description Role and organization of purchaser Site location Equipment task Equipment to be purchased Control and instru
20、mentation Electrical supplies and other senices other interfaces Project programme Equipment identification systems Extent of supply Terminal points Operational requirements Operating environment Manning levels Normal operation Operating hours Abnormal conditions Further operational requirements Lif
21、e expectancy Design life Components requiring periodic maintenance Performance requirements Duty Performance Equipment margins Avdabiiity Levels of component redundancy Further performance requirements Design and fabrication Specific equipment features Material selection Safety Start-up and Shutdown
22、 Page 3 EN 45510-4-21999 10.4 Interchangeability 11 Maintenance requirements 11.1 Planned maintenance 11.2 Personnel safety 11.3 Requirements for access 11.4 Lifting requirements 11.5 Special tools 11.6 Test equipment 11.7 Spareparbstrategy 11.8 Special precautions 12 Technical documentation require
23、ments 12.1 Tender documentation 12.2 Contract documentation 13 Applicable legislation, regulations, 13.1 Legislation and regulations 13.2 Standards 13.3 Furtherrequirements 14 Evaluationcriteria 14.1 General 14.2 Technical criteria 15 Qualitymeasures 15.1 General 15.2 Approvals procedure 15.3 Inspec
24、tion requirements 15.4 Non-conformity 16 Site factors 16.1 Access 16.2 Facilities 16.3 Site specific requirements 17 Verification of specified performance 17.1 General 17.2 Works tests 17.3 Test during installation and 10 commissioning lo 17.4 Technical conditions for trial run 17.5 Functional and p
25、erformance tests Page 10.5 Fabrication methods 2 4 4 4 4 5 5 6 6 6 6 7 7 standards and further requirements 9 l1 Annex A (informative) Bibliography 11 11 11 12 12 page 13 13 13 13 13 13 13 13 13 13 14 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15 15 15 15 16 16 16 16 16 16 17 17 O BSI 09-1999 Page 4
26、EN 4551-4-21999 1 Scope This standard gives guiance on writing the technica,l spectfication for the procurement of air heating equipment associated with steam generating plant and gas reheating equipment associated with flue gas treatment plant for use in electricity generating statiom (power statio
27、ns). This guide for procurement is not nlq)licnbie to equipment for use in Uze nuclear *reactor ptic (ma of nuclear power stations. Other possible applications of such equipment have not been cciisirkred in the preparation of this guide. This guide covers heat exchangers of the following types: - in
28、direct heating with steam; - rotary regenerative heaters; - tubuladplate recuperative heaters; - liquid coupled heat exchangers; -heat pipes. This guide does not cover systems for direct contact heating of air or flue gas by hot gases. The equipment covered by this guide is defined by its function r
29、ather Ulan design type. Therejore, Uze guidance to the specifEcation is stutd in perjomnce terms rather Ulan being spekfied by a detailed description of the equipment to be supplied. This guide indicates to potentia,l purchasers how ther spectfication should be prepa,red so that: - the equipment typ
30、e and capacity intetces correctly with other elements of the systems; -predicted performance is achieved - ancillary equipent is properly sized; - reliability, availabilitg a,nd safety requirements are achieved; -pmpm consideration is given to the evaluation process and the qua,lity measures to be a
31、pplied. This guide does not detemine the type of specification (e.g. detailed, pqforrnance, functional) or #E extent of supply for any given contra - any allocation of responsibilities which are determined by the contmct. This guide does not presm:be the a,rmngement of the documents in the enquiry.
32、NOTE As a comprehfemive Eu.ropean environmental policy is still u.n - geological, e.g. seismic conditions and chamtenstics of subsoil (e.g. caverns, gliding stratificu,tions, load bearing capability of subsoils); - geographic, e.g. elevation, influence of local topography and structures; - hydrologi
33、Lai, e.g. flooding and tides. 4.3 Equipment task The specification should describe in general terms the function, task or role of the equipment to be purchased, e.g. whether it is part of a m po.u?er gmera,ting plant, a modification to an exsli.rig power generating plant, or replacement equipment. W
34、here appropriate, the speccation should dqfi,n.e the function and the known limitations, gang, in the equipment connected to that whkh is being supplied so that the equipment may a,void ,imposing udume conditions or the supplier may suggest modiflkations to connected equipment which would mwe sa,tis
35、futory operutwn. 4.4 Equipment to be purchased The specification may -the number of heat exchangers (for any particulas application); - the heat exchanger orientation, for exaniple horizontal or vertical shaft rotary heaters and alternative arrangements for ducts. The specification ma,y also define
36、preferences .for equipment types (or give information) regard2ng compatibility with existing equipment, if required. The specification may defuie any preferences with regard to the grouping of systems, for example include the cleaning system with the heat exchanger. o BSI 09-1999 5% specwcation shou
37、ld define the intended methods or local practice for maintenance, inspection and operation. The specwcation should define requirements wiM regard to the geneml appearance of the equipment (e.9. dimensions, shupe or colour) to meet local planning requirements or spec$fk critema, where such requiremen
38、ts these should be to a recognised European or international Standard. The specification should define the type and capacity of other services for the operation of the equipment, such as compressed air or aiunliary steam. 4.7 Other interfaces The specwcation should defi,ne the intktfaces with - acce
39、ssories for handling and maintenance systems; - spare parts such as bearings and seals; - site activities such as storage, transport and installation; - commissioning and performance tests; - documentation of equipment or system details, operation and maintenance manuals. rf Uze purchaser wishes to
40、hve a contract for control and instrumentation sepa.rate from the equipment supply contract, the specification may require the supplier to proz6de infomux.tion on ad the necessary interfaces (e.g. all instrumentation tapping points and instruments, including their signal outputs, etc., provided with
41、in the extent of supply). In dition, provision may need to be maomtion due to corrosion. The specification may also define exclusions, .for example civil works such as buddings, foundations, strwlwes and equipment obtained separately by the pu lrlll.x Thp specification may indicate the acceptability
42、 of alkv-mtive offws being included in the tender. 6 Terminal points The speczpcation should - obligatibw, e.g. operational staflshift patterms; - restrictions, e.g. process waste disposal. 7.2 Manning levels The specification should define the power station manning leveis where th8y may influence t
43、he equipment supply. 7.3 Normal operation Thp specifScation slwuld define in broad tenns the expected norrnal operation of the power station and of the equipment. Normal operation may include long periods at or near full load, followed by penods at part load and intermittent operation with frequent
44、short shutdowns. The specification should define the continuous maximum and continuous minimum operating conditions for the equipment, system or any component. The specification should define the operating limits for normal operation and any requirements for economic operation, for example at low lo
45、ads the achievement of an acceptable economic balance between combined cold end temperature and air bypass rate. 7.4 Operating hours The specipcation should define the total life time required of the power sta.tion and the equipment (e.g. hours) and the required operating period oj the equipment. Th
46、e specification may distinguish between components which wiil achieve the life expectancy of the equipment and replaceable items. 7.5 Start-up and shut-down The specification should define the minimum required number and type of start-up and shutdown cycles of the equipment. The specification should
47、 define any requirements relating to. safe operation during start-up and in particular dwing oil firing. The specification should define the expected chngeover strategy where standby equipment or bypasses a,re provided. The specification should define whether emergency shutdown should be entjrely au
48、tomatic or whether manuai intervention is acceptable, for example manual override to maintain rotation of regenerative heaters. 7.6 Abnormal conditions The specification should provide information on the known abnormal conditions to which the equipment might be subjected. Tlu? supplier should tahz t
49、hese into account in the design or selectwn of component.s/mtet%ak. Abnormal conditions of relevance to airheater or gas-gas reheater could include: - abnormally heavy dust burdens in the flue gas, caused by changes in fuel specification or - changes to fly-ash characteristics due to the use of additives, etc.; - air andor flue gas temperatures at inlet to airheaters or gas-gas reheaters out of the specified ranges; - loss of power supplies or cooling systems; - unscheduled operation or error resulting in opening or closure of dampers; - abnormal wind or ice loadi
