1、BRITISH STANDARD Guide for procurement of power station equipment - Part 5-2: Gas turbines The European Standard EN 455103-21998 has the status of a British standard ICs 27.040: 27.100 BS EN 45510-5-2:1998 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STD.BS1 BS EN L!551-5-2
2、-ENGL 1998 W Lbilllbb b8078 551 m BS EN 46610-6-2:1998 National foreword This British Standard is the English hguage version of EN 9.6610521998. The UK participation in its preparation was entrusted to kchnica Committee W-/20, Power engineering steering commiaee, which has the responsibiity to: - ai
3、d enquirem to understand the text; - present to the responsible European commitke any enquiries on the interpretation, or proposais for change, and keep the UK interests informed; - monitor related international and European developments and promulgate them in the UK. A list of organizatons represen
4、ted on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Intedona Standards Correspondence inde
5、x“, or by using the “Find“ faciity of the BSI Standards Electronic Catalogue. A British Standard does not purport to include aii the necessary provisions of a conhi% Users of British Standards are responsible for their correct appication. Compliance with a British Standard does not of itself confer
6、immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. This British Standard, having been prepared under the direction of the Engineering Sector Board, was published unde
7、r the authority of the Standards Board and comes into effect on 16 May 1998 O BSI 1998 ISBN O 680 29222 3 Amendments issued since publication ID 27.100 Descriptors: Electric power stations, turbines, purchase, user supplier relations, invitation of tenders, specifications, technical Writhg En$ush ve
8、rsion Guide for procurement of power station equipment - Part 5-2: Gas turbines Guide pour lacquisition dquipements destins LUIX cenldes de production dlectricit6 - Partie 52 Mines combustion Leitfaden fur die Beschamg von Ausrustungen fur Kraftwerke - %il 52 Gasturbinen This European standard was a
9、pproved by CENEENELEC on 11 December 1997. CENKENELEC members are bound to comply with the CENKENELEC Intemal Regulations which stipuiate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concern
10、ing such national standards may be obtained on application to the Central Secretariat or to any CEN/CENELEC member. This European Standard exists in three official versions (English, French, Geman). A version in any other language made by ImnsMon under the responsibility of a CEN/CENELEC member into
11、 its own language and notified to the Central Secretariat has the same status as the officiai versions. CENKENELEC members are the national standards bodies and national electrotechnical committees, respectively, of Awtrh, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,
12、Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN Central Secretariat rue de Stassart 36, E1050 Brussels CENELEC Central Secretariat rue de Stassart 35, B-1050 Brussels O 1998 CENKENELEC Ail ts of exploitation in any form and by any means r
13、eserved worldwide for CEN national Members and for CENELEC Members. Ref. No. EN 45510 - predicted pe.$omnce is acheve - anculary equipment is properly size6 - reliability, availability and safety requimnmts are achieve6 -proper consmtion is given to the evalwltion pes and the quality m.easum to be a
14、pplied. specljfcation (e.g. detailed, perf mame, fumt.ionuL) or the extent of supply for any given contmct which is nomzally decided on the basis of thepurchasers project stmtegy. It does not cover: This Guide does not determim the type of - any commercial, contmctual or kga issues whkh are normaUy
15、in separate parts of an enquiry; - any allocation of responsibil.it.ieS which are determined by the contmct. Thzs Guide does not pwscrbe the arrangement of the documts in the enquiry. NOTE As a compreh this temperature is referred to as the turbine rotor inlet temperature, TRiT. 3.2.6 equivalent ope
16、rating hours as defined in ISODIS 3977-11 3.3 General terms 3.3.1 equipment plant, component, system and/or associated service to be provided in re-sponse to the enquiry 3.3.2 cortformity f - geological e.g. seimnic conditions and chamteristics of subsoil (e.9. caverns, gliding stratificatwns, load
17、bearing capability of subsoils); - geographic e.g. elevation, influence of local topography and structures; - hydrological e.g.jlooding and tides. 4.3 Equipment task The specmeation should ckscribe in geneml terms the function, task or role of the equipment to be purchased. e.g. whether it is part o
18、f a new power genemting plant, a modifwation to an misting power genemting plant or replacement equipment. where appropriate, the specification should define the function and the hwn limitatwns, if any, in the equipment connected to that which is being supplied so that the equipment muy avoid imposi
19、ng adwse conditions or the supplier muy suggest modifications to connected equipment which would ensure satisfactory operation. 4.4 Equipment to be purchased The specrnation may define the equipment tgpe or arrangement to be purchased. For example the purchaser may specify the presence of a bypass s
20、tack, single or muiti shaft arrangement. The Specification muy should be stated. Where relevant, the specification should state the ambient temperature (and, if relevant, the cooht inlet temperahre) at the time when maxjmum output is required The specwcation should also state the policy in the follo
21、wing opemtional areas: - risks e.g. loss of electrical supplies, loss of water supplies or cooling systems; - obligations e.g. opemtioru stqfTsh patterns; - restrict.ionS e.g. process waste disposal. 7.2 Manning levels The Specification should - demonstrate that the tender matches the purchasers req
22、uirements set out in the enquiry; - auOw evaluation by the purchaser. This inforrnution may include design pamrnters, drawings, scheduEes, schematic functional and insCrumentution diagram, tgpe test certification and refme instauations. 12.2 Contract documentation The specification should define a l
23、ist of documents to be provided by the supplier. This shauld include a definition of when or at what stage the documents should be made avaable. In particular the supplier should provide aU dmwings giving infomtion on interjces and terminal points. The specification may request generai layout dmwing
24、s, detaued arrangernent drawings and assembly dmwings, v thme are necessary for inspection of functional clearances The specification may request supporting information regading the construction programme, major cid works, design sub-, design studies, construction studies, reliability studies, test
25、procedum, commissioning procedures, operating and maintenunce instructions and quaCity control infomtion. The specification may spec? - cross sectional arrangements of all major items (e.g. steam turbine, heat recovery steam generator in combined cycle plant); - general arrangement and assembly draw
26、ings for all major plant items; - schematic asrangements of all mechanical systems; - schematic asrangements of all electrical systems, - pipework layout drawings; - access and supporting steel work - heat balance diagrams; - single line diagram; - electrical plant design parcuneters for system anal
27、ysis; - foundation design; - builduig loads, - delivery and assembly programmes; - identification and marking systems; - mechanical and electrical interface drawings; - quality status including inspection and test reports; - maintenance manuais, including spare parts iist, - operating instructions.
28、13 Applicable legislation, regulations, standards andfurther requirements 13.1 Legislation and regulations The international, national and local legislution and reguluth hawing significant influence on design of the equipment should be identified in the enquiry. These may include health and safety r
29、equirements, enwimnmental protection and waste disposal and planning constmints. The enquiry should ako identify specific con.stmtion features and site activities covered by local legislution. The enquiry should state that such information is not necessarily exhaustive and does not modify the legal
30、obl.igations of the supplier. 13.2 Standards l7z.e specmeation should identify those stanurds whose use is obligatorg and other standards or codes with which the equipment should comply, any. The purchaser my ask the tenderer to define other standards or codes, in addition to wse .ident - running co
31、sts; - cos.5effctiwms.s; - aesthetic and functional characteristics; - technical merit; - after-sales service and technical assistance; - cmrnikwnts with regard to spare parts; - me. - quality; - security of SUpplis; 14.2 Technical criteria The enquiry should - detaed plans for tests of integration
32、of equipment; - components and systems which have to be operable for commissiming of other phnt; - definition of ule commissioning process and ule necessaq! documentation required. O BSI 1998 17 Verification of specified performance 17.1 General l the supplier should carry out the continuous truL ru
33、n if smied. The purpose of the trial run is to prove the functional capabity of the equipment and to show thut it wi, with high pmbabity, meet its performance targets. During the run, thw General principles of presentaiion. IS0 3098, lchnicai rawings; kttring. IS0 7200, Technical drawings; Title blo
34、cks. Annex B (informative) Degradation and ageing B.1. Definitions From the first light-up, gas turbine performance, i.e. the output power and heat rate, degrades with operation and this continues through its life. Some of the degradation is recovered through compressor washing and from maintenance
35、actions. The degradaton comprises ageing, compressorturbine fouling and air filter pressure drop. Ageing is defined as the loss of performance due to wear and tear experienced in normal load operation, s:4t as increased shaft clearances, foreign object du.*;: on blade airfoils etc. and losses attrib
36、utable to c:, tssor or turbine fouling which cannot be restored by compressor washing. It does not include losses attributable to compressor fouling which are recoverable by compressor washing or to the effects of air ter blockages. The cornpressorturbine fouling is dened to be the origin of the los
37、s in performance which is recoverable by compressor washing. Note that if the turbine fouling is significant it should be identified separately. The air iter pressure drop is defined to be the origin for the loss in performance due to the air inlet flter blockage alone. B.2 Action To assess the perf
38、ormance of the gas turbine or combined cycleheat and power plant over a period of time, information on performance degradation may be sought nom the supplier. Based on operating experience with similar plants, information may be provided giving predictions of the long term performance degradation of
39、 the gas turbine plan$ the appropriate rating should be defined and a policy on compressor cleaning should also be defined Infodon on the changes to compressor mass flow, gas turbine exhaust temperature, generator output and heat rate after agreed periods of time should be provided for each of the a
40、bove categories, if possible. Information can also be provided to show the typid recovery in performance from major and minor maintenance actions, compressor washing both on and off line, and from air filter replacement The basis of the predictions should be stated This standard is under preparation
41、 by ISOITC 192. O BSI 1998 BS EN 455 10-5-2: 1998 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution 3SI is the independent national body responsible for preparing British Standards. It ?resents the UK view on standards in Europe and at the international leveL It is ncorpor
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