Bsi bs en 45510 5 4 1998 scan

BRITISH STANDARD Guide for procurelllent of power station equipmentPart 5-4: Hydraulic turbines, storage pumps and pump-turbines * * (I) The European Standard EN 45510-5-4:1998 has the status of a British Standard lCS 23.080; 27.100; 27.140 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGIIT LAW BSEN 45510-5-4:1998 BS EN 4551()"54:1998 National foreword This British Standard is the English KUI'SUj!\,oc; version of EN 45510-5-4:1998 The UK in its preparation was entrusted to Technical Committee E/-/lO, Power engineering steering committee, which has the responsibilit;v to: - aid enffl1'1'mnfm.t station plant EN 45510 is the Tes1'JOnsibilitv - -~ The so called ('cornmnn , a.~ appropriate, also appear in italics in the documents specijw to particular equipment Where par'agI-apllS of "common clauses" are omitted, each omitted is indicated by the symbol ***** In this words in bold type indicate that have the meaning in the definitions, clause S In this Guide, words and sentences not in italics are SP;~CJlIC to this Guide and refer to the partiCll!ar equipment covered AC(:orcl.lI'l2 to the CEN/CENELEC Internal Regulations, of the the national standards countries are bound to this European Standard: Czech Demnark, Finland, France, f ':':',.-rnt,~,d to applies EN ISO 9001, Quality systems - Model for quality assurance in development, production, irutattation and (ISO 9001:1994) EN ISO 9002, Quality systems - Model for quality assurance in production, irutallat,Wn and «P.rHiri:nsl (ISO 9002:1994) lEG 50 (191), International electrotechnical vocabulary, Chapter 191: and of units), Pump-turbines and Storage pumps This Guide for of hydraulic machines has been prepared to be used with the International Standard lEC it be read in addition and complementaIy to the International Standard The equipment covered by this Guide is defined its function rather than design type ThereJore, guidnnce to the spec(fication is stated in performance terms rather than being speciJied by a detailed description of the equipment to be supplied This Guide indicates to potential purchasers Iww their speciflcation should be prepared so that: - the equipment type and capacity inteifaces correctly with other elements the :'fll:5tem:::;; - predicted performance is achieved; - anciUary equipment is property sized; reliability, avaUabiltty and safety requirements are achieved; proper consideration is given to the evaluation process and the quality measures to be applied This Guide does not determine the type of speci/fcation (e.g detailed, performance,iunctional) or the extent oj supply for contract which is rwrmally decided on the purchaser's strategy It does not cover: - any com~, cantractual or legal issues which are normally in of an enquiry; - any allocation of respo'TI,$'ibilities which are determined by the cantract This Guide does rwt prescribe the arrangement of the documents in the enquiry NOTE As a comprehensive still under preparo€ion, this environmenUrl policy Us service lEC International code for the field acceptance tests to determine the hydraulic performance of bydraulic turbines, storage pumps and pump-turbines lEC 193:1965, International code for model acc:eptanj"'}{IIBI during which the equipment is in and/or does not restrict operational power ll'tation © BSI 1998 of the coordination of the project, or wJl,e~?r orga:n'izations 'will be u:v:rJ(n:fU~~ part of this junction enquiry orc.raniZQ.tiOnal inteiface.s and the mYIf'P'(l1J.'nr:!.'I to be rna:naging the contract ami the site Page EN 45510-5-4:1998 4.2 Site location The specifkation should dEScribe the ge.ngraphical location of the site, which may include surveying points, the previous use of the site and any local features such as the impact of industrial or military activities and planning restrictions Where applicable, the spec(fkation should indicate site datum on spec(fkation drawings and specify site and drawing orientation and define co-ordinate axes (x, y, z) and numbering order to ensure consistency between suppliers of connected equipment Where appropriate, the spec(fkation should define the permitted ground loading, dimensiana1 and time restrictions on access routes up to but rwt including public roads or railways The spec(fkation should identify, where appropriate, the environment of the site in which the equipment will operate The following factors may rwrmally be included if appropriate: - climatic e.g atmospheric pressure, annual variation of air and cooling water temperature, relative humidity, rainfall, icing, snow, l1n11d velocity (normal and maximum), lightning; - geological e.g seismic conditions and characteristics of subsoil (e.g caverns, gliding stratifications, load bearing capability of subsoils); - geographic e.g elevation, inJluence of local topography and structures; - hydrological e.g flooding and tides, range of water temperature, water quality analysis (chemical, corrosive, biological, suspended solids) 4.3 Equipment task The specifkation should describe in generol terms the junction, task or role of the equipment to be purchased, e.g whether it is part of a new JXYWer generating plant, a 1rwdification to an existing JXYWer generating plant or replacement equipment Where appropriate, the specification should define the function and the known limitations, if any, in the equipment connected to that which is being supplied so that the equipment may avoid imposing adverse conditions or the supplier may suggest modifications to connected equipment which would ensure satisfactary operation 4.4 Equipment to be purchased The specification may define the equipment type or arrangement to be purchased For example, the purchaser may specify the: - machine type, e.g Francis, Pelton, etc.; - machine characteristics; - preferred arrangement, e.g vertical or horizontal shaft; - preferred bearing arrangement; - preferred speed; - preferred reference level of the machine The specification should give a description of the hydraulic scheme (dams, reselVoirs, conduits, etc.) and a description of the hydraulic circuit (intake, gallery, surge tank, penstock, gates and valves and t.ailrace) The spec(fkation may also define preferences for equipment types (or give information) regarding compatibility 11Jith existing equipment, if required The spec(fkation slundd dlifine the intended methods or local practice for maintenance, inspection and operation The spec(fkatwn should define requ'irements with regard to the general appearance of the equipment (e.g dimensions, shape or colour) to meet local planning requirements or specific criteria, where such rPJ}Uirements exi.o"U.TrIH,'hf!.'i or cooling 'i'IiS/ptffll'i: - obligations e.g staff shift patterns; - restrictions e.g process waste disposal PageS EN 45510-5-4:1998 7.2 Manning levels The spec(ffcation shmtltl the power station manning levels where they may influence the equipment supply 7.3 Normal operation The spec(ffcatlon shmtltl ckfine in &rood terms the expected normal operation of the pcywer station ami of the This may be base load or operntion The specification should ide'ntiJfv uses such as spinning reseIVe, isolated oJ)(~ration etc 7.4 Operating hours The spec(ffcation should define the total life ti'lne requimd of the power station and the equipment (e.g lwum) ami the requimd operating period the equipment 7.5 Start-up and shut-down The specification should state whether start-up and shutdown is to be semi-automatic or automatic and the rates of loading required in normal and emergency conditions The specification shmtltl the e:JJpP£ted changeover strategy where standby equipment or bypasses are provided For storage the specification should indicate the change-over time 7.6 Abnormal conditions The spec(ffcation shmtltl information on the known ahrumnal conditions to which the equipment might be subjected The 8uppUer shmtltl take these into account in the design or selection of romponentslmaum.als For rejection, overload, load load shedding, transient op:~ratlon, isolated operation, spinning reseIVe, synchronous compensation duty and off-frequency operation The specification should state the allowed He''!u''' ,Y rnnge of operation, the estimated total duration of power generation at frequency extremes and prevailing conditions if different to the norm 7.7 Further operational requirements The should typical information on n:>flnir.:>(I flexibility and the expected full and part load OJ)l:lratlon regime of the hydraulic machine Where appropriate, the conditions under these be stated Life expectancy The supplier shmtltl ckfine limitations on equipment if any, and these shmtltl be i'lldUlled in the tender evaluation process 8.1.2 Number of start-up and shut·down cycles The specification slwu.ld include an estimate number of cycles to which the equipment uril1 subjected tile 8.1.3 Equipment for monitoring remaining life The spec(ffcation may request for monitoring the remainin.g life of comporum/$ which are subject wear (alYrasion), erosion and/or corrosion In some cases requirements may be stated 8.2 Components requiring periodic maintenance The specification slwu.ld request the w provide a schedule of components which require periodic maintenance or replacement This shmtltl include of these operations This schedule include estimates of maintenance man-lwurs and cost of components The RUiDn"iel' should identifY flwse maintenance replacement rYTu>n.'[UYJ'I_" which shut-dA:iurrt of the process rrwre jrequenUy than the planned maintenance shut-downs Performance requirements 9.1 Duty The specification shmtltl define the perj'ormance targets for the at ckfined operatin.g points and at other conditions These may include idficiency and margins at.fuU load operation and availability The spec(ffcation may also the jlexWility requirements over the full ran.ge fWl,'rlU:1mn comiitions For hydraulic machines performance usually defined in terms of: - power or discharge; are - maximum momentary overspeed; maximum/minimum momentary pressure; maximum state runaway maximum hydraulic energy and zero-discharge power in case of pump oPf~ration; - cavitation pitting; - hydraulic thrust; 8.1 Design life 8.1.1 General This slwuld be a specific period which takes into account the anticipated operating regime ami recommended maintenance ami uril1 broaJJly equate to the stated operating lwurs 7.4) The specification slwu.ld the design life of romponents which may be subject to periodic TfJ]Jlacement - vibration 9.2 Perj'ormance The specification ma,y define the operating points and other defined comiitions at which the equipment peiformance are w be demonstrated immediately after commissioning and/or at other points in the life oj the equipment © BSI 1998 Page EN 45510-54:1998 Performance tests (model acceptance tests or field acceptance tests), should be interpreted according to rules given in IEG 41 and/or lEG 193 10 Design and fabrication NOTE PeifQrmance tests Q,re sometimes conduct.ed off site and may be carried out at conditions dif[erenljrom the opera.ting point The results may require scaling according to agreed rules 10.1.1 Design and construction The specification should state the design criteria and system features required The supplier should provide detailed information on the hydraulic machine to the purchaser These should at least include design data material, performance measuring points and interchangeability The specification may require design data such as bearing metal temperature and the leakage rate of the closed guide vanes 9.3 Equipment margins The speciJication should identify requireAi equipment margins by accurately indicating the operating field of the hydraulic machine These margins may also comprise deviations from specified data and/or manufacturing tolerances The purchaser should also indicate how the margins will be used in the economic evaluation to allow the supplier to optimize turbine selection 9.4 ADailability The t~peciJication may spp1:ify availability requirements In order to demonstmte conf01mity with these requirements, the specification may request the supplier to use data on availability, reliability and maintainability to carry out an U'lwlysis to show that the target availability w'iJl be met Details for defining availability of hydraulic machines should be agreed between supplier and purchaser tr:J ,.* 9.5 Levels of component redundancy The speciJication may define requirements for cmnponent redundancy These requirements may provide either additio'nal operational security or cover extremes of operating conditions The supplier should only use these additional plant cmnponents in meeting performance requirements in the conditions defined in the specification If the specification does not specify level.s of comPO'Mnt redundancy, the purchaser may ask the supplier to demonstrate tlwt the level of redundancy included is adequate to meet the availability requ'irements 9.6 Further peiformance requirements Not applicable to this Guide 10.1 Specific equipment features 10.1.2 Noise and vibration The specification should define the requirements for noise levels local to the machine (see armex A, ISO 3740) and the supplier should meet these through provision of quiet equipment, by the use of acoustic insulation, close fitting barriers or other appropriate methods Due attention should be paid to the need to minimize acoustic leakage The pnrchaser may request that the rotor should be balanced to a specified standard The purchaser may request that transverse and torsional critical speeds should be calculated by the supplier and made known to the purchaser In the calculation the assumed effects of the foundation stiffness should be stated Where different suppliers are involved (e.g for hydraulic machine, guide bearings, thrust bearing and generator) the purchaser should request that the supplier to whom overall responsibility for these issues has been given (see clause 5) should carry out calculations of the dynamic behaviour of the combined shaftline The level of vibration should be demonstrated on site to a recognized standard 10.1.3 Maximum weight and dimensions The specification may define maximum weights and dimensions if these are required to comply with transportation or site restrictions 10.1.4 Maintenancefeatures The specification may define certain design features, e.g to allow safe working within the hydraulic machine The tenderer may offer alternative features, but these should be justified by additional information or references 10.1.5 Measuring and sampling points The specification may define 'where measuring and sampling points for tests during the lifetime of the equipment should be provided The specification should indicate the type of peiformance tests (see clause 17) and routine tests to be carried out, I:YUt the supplier should use experience of simila'r equipment supplied to ensure that adequate provision 1,8 rrwde for testing in the design of the equipment © BSI 1998 Page 10 45510-54:1998 10.1.6 Legislation measurement points The specfjJcation should normally define the legislation and codes of practice for which crperating dam are required and the provision for measurement and/or sampling points to oJ1ow tlu3se data to be obtained NOTE Emissions, noise, vibration and temperaflure mea.surement are frequently required for this pw-pose 10.2 Design Just(fkation The supplier should protridR equipment descriptions as qf the justifwation d.escription of the basic pri:rwiples extent oj extrapolation, degree of innovation, to the opnons considered, economic implications and conformity with the purchaser's requirements In addition, the spec(fkatlon may define mquirements for justification of speciftc design feat:ures 10.3 Material selection The materials of construction should normally be selected 1Yy the supplier The specfjJcation may, however, define the 'jffeferred, materials selection and request an alternative offer tlu3se materials Where the supplier has made the selection materials, the supplier should for the selection of materials and proposed fabrication metlwds This should be done with reference to operating conditions, life expectancy, irl.$pOOtion strategy, maintenance metJwds, final and economic factnrs The material selection 1Yy the supplier should also take into account the poterttilll material degradation modes during manufacturing, starnge, assemWly, ~,r;"'f>.JI start-up, and shutrdown periods 10.4 Sojetll 10.4.1 General The equipment should comply with international, national and local safety during installation and opf!ration The supplier's ver.son:nel on site should also comply with such 'YmIiUM-em,,en,ir.:wIt1fmJ~ example, the of linings/coatings mechanical or corrosive damage, protection possibility of component detachments and maintenance operations and rrrnjl'~'m""ntJ:: for dismantled equipment lechnical documentation requirements 12.1 'lender documentation The specification slwuld 'request tenderers to provide information in the tender to: ((U)uili;ate system sw,aws; - demonstmte that the tender matches the purchaser's requirements set out in thE enquiry; - allow evaluation by the purchaser This information may include design pammeters, drawings, schematic junctional and imtrumentation diagrams, type test certifwation and 'J"f:d.""""'''K''D imWllatiUliS 12.2 Contract documentation < The specf1Jcation slwuld rie.(ine a list of documents to be provided by the supplier This slwuld include a definition oj when or at what the documents should be mruJ.e available In the supplier slwuld pro1lide all drawings giving information 00 i~erf(J!CeS and terminal The speclJ!cation may request general layout drawings, detailed arrangement drawings and assembly dmwings, if necessazy for functional clearance inspe(:tion The specification may request supporting in/ormation regarding the OCYfl.Strw:;tion programme, majar civil worts, submissions, design ",vuW""", c-SUIpP]liersi - the requirements of electronic data exchange between supplier and cnstomer should be COlrlSllleroo example, application of the interfaces or the possibility of data transmission other dp-systJems should be considered; uI1:itnately the documentation provided should comply with the and contr.;l,Ctua! vvu.!$