Guide for procurement of power station equipment - Part 4-5: Boiler auxiliaries - Coal handling and bulk storage plant

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Guide pour l'acquisition d'équipements destinés aux centrales de production d'électricité - Partie 4-5: Auxiliaires de chaudière - Installation de manutention et de stockage en vrac du charbon

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Guides for procurement of power station equipment - Part 4-5: Boiler auxiliaries - Coal handling and bulk storage plant

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Status
Published
Publication Date
13-Aug-2002
Current Stage
6060 - Document made available
Due Date
14-Aug-2002
Completion Date
14-Aug-2002

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Guides for procurement of power station equipment - Part 4-5: Boiler auxiliaries - Coal handling and bulk storage plantLeitfaden für die Beschaffung von Ausrüstungen für Kraftwerke -- Teil 4-5: Nebenanlagen - Kohleumschlag- und MassengultagerungsanlageGuides pour l'acquisition d'équipements destinés aux centrales de production d'électricité -- Partie 4-5: Auxiliaires de chaudières - Installation de manutention et de stockage en vrac du charbonGuides for procurement of power station equipment -- Part 4-5: Boiler auxiliaries - Coal handling and bulk storage plant27.100Elektrarne na splošnoPower stations in general27.060.30Grelniki vode in prenosniki toploteBoilers and heat exchangersICS:Ta slovenski standard je istoveten z:EN 45510-4-5:2002SIST EN 45510-4-5:2003en01-februar-2003SIST EN 45510-4-5:2003SLOVENSKI

STANDARD
SIST EN 45510-4-5:2003

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 45510-4-5August 2002ICS 27.040; 27.100English versionGuide for procurement of power station equipment - Part 4-5:Boiler auxiliaries - Coal handling and bulk storage plantGuide pour l'acquisition d'équipements destinés auxcentrales de production d'électricité - Partie 4-5: Auxiliairesde chaudière - Installation de manutention et de stockageen vrac du charbonLeitfaden für die Beschaffung von Ausrüstungen fürKraftwerke - Teil 4-5: Nebenanlagen - Kohleumschlag- undMassengutlagerungsanlageThis European Standard was approved by CEN and CENELEC on 3 July 2001.CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givingthis European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerningsuch national standards may be obtained on application to the CEN Management Centre or to any CEN or CENELEC 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 or CENELEC member into its own language and notified to the CEN Management Centre has the samestatus as the official versions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden,Switzerland and United Kingdom.CEN Management Centre:CENELEC Central Secretariat:rue de Stassart, 36

B-1050 Brusselsrue de Stassart, 35

B-1050 Brussels© 2002 CEN/CENELECAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members and for CENELECMembers.Ref. No. EN 45510-4-5:2002 ESIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)2ContentspageForeword..............................................................................................................................................41Scope.......................................................................................................................................62Normative references...............................................................................................................73Terms and definitions..............................................................................................................73.1Organisational terms................................................................................................................73.2Technical terms........................................................................................................................83.3General terms...........................................................................................................................94Brief overall project description............................................................................................104.1Role and organisation of purchaser.......................................................................................104.2Site location...........................................................................................................................104.3Equipment task......................................................................................................................114.4Equipment to be purchased....................................................................................................114.5Control and instrumentation..................................................................................................124.6Electrical supplies and other services....................................................................................124.7Other interfaces......................................................................................................................134.8Project programme.................................................................................................................134.9Equipment identification systems..........................................................................................135Extent of supply.....................................................................................................................136Terminal points......................................................................................................................147.1Operating environment..........................................................................................................157.2Manning levels.......................................................................................................................157.3Normal operation...................................................................................................................157.4Operating hours.....................................................................................................................167.5Start-up and shut-down..........................................................................................................167.6Abnormal conditions.............................................................................................................167.7Further operational requirements...........................................................................................178Life expectancy......................................................................................................................188.1Design life..............................................................................................................................188.2Components requiring periodic maintenance........................................................................199Performance requirements.....................................................................................................199.1Duty.......................................................................................................................................199.2Performance...........................................................................................................................229.3Equipment margins................................................................................................................229.4Availability............................................................................................................................229.5Levels of component redundancy..........................................................................................229.6Further performance requirements.........................................................................................2310Design and fabrication...........................................................................................................2310.1Specific equipment features...............................................................................................2310.2Design justification............................................................................................................2610.3Material selection...............................................................................................................27SIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)310.4Safety.................................................................................................................................2710.5Interchangeability..............................................................................................................2910.6Fabrication methods...........................................................................................................3011Maintenance requirements.....................................................................................................3011.1Planned maintenance.........................................................................................................3011.2Personnel safety.................................................................................................................3011.3Requirements for access....................................................................................................3011.4Lifting requirements..........................................................................................................3111.5Special tools.......................................................................................................................3111.6Test equipment..................................................................................................................3111.7Spare parts strategy............................................................................................................3111.8Special precautions............................................................................................................3212Technical documentation requirements.................................................................................3212.2Contract documentation.....................................................................................................3213Applicable legislation, regulations, standards and further requirements...............................3313.1Legislation and regulations................................................................................................3313.2Standards...........................................................................................................................3313.3Further requirements..........................................................................................................3314Evaluation criteria..................................................................................................................3414.1.General...............................................................................................................................3414.2Technical criteria...............................................................................................................3415Quality measures....................................................................................................................3515.1General...............................................................................................................................3515.2Approvals procedure..........................................................................................................3515.3Inspection requirements.....................................................................................................3615.4Non-conformity.................................................................................................................3616Site factors.............................................................................................................................3616.1Access................................................................................................................................3616.2Facilities.............................................................................................................................3616.3Site specific requirements..................................................................................................3717Verification of specified performance...................................................................................3817.1General...............................................................................................................................3817.2Works tests........................................................................................................................3817.3Test during installation and commissioning......................................................................3817.4Technical conditions for trial run......................................................................................3917.5Functional and performance tests......................................................................................39Bibliography......................................................................................................................................41SIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)4ForewordThis document (EN 45510-4-5:2002) has been prepared by Technical Committee CEN/CENELEC“Joint Task Force Power Engineering”, the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication of anidentical text or by endorsement, at the latest by February 2003, and conflicting national standardsshall be withdrawn at the latest by February 2003.This standard takes the form of a recommendation and is therefore entitled a “Guide”.This Guide for procurement is a part of a series of Guides mandated to cover the procurement ofpower station plant and equipment in conformity with European Procurement Directives. TheGuides are:EN 45510Guide for procurement of power station equipmentPart 1:Common ClausesPart 2-1:Electrical equipment - Power transformersPart 2-2:Electrical equipment - Uninterruptible power suppliesPart 2-3:Electrical equipment - Stationary batteries and chargersPart 2-4:Electrical equipment - High power static convertorsPart 2-5:Electrical equipment - MotorsPart 2-6:Electrical equipment - GeneratorsPart 2-7:Electrical equipment - Switchgear and control gearPart 2-8:Electrical equipment - Power cablesPart 2-9:Electrical equipment - Cabling systemsPart 3-1:Boilers - Water tube boilersPart 3-2:Boilers - Shell boilersPart 3-3:Boilers - Boilers with fluidized bed firingPart 4-1:Boiler auxiliaries - Equipment for reduction of dust emissionsPart 4-2:Boiler auxiliaries - Gas-air, steam-air and gas-gas heatersPart 4-3:Boiler auxiliaries - Draught plantPart 4-4:Boiler auxiliaries - Fuel preparation equipmentPart 4-5:Boiler auxiliaries - Coal handling and bulk storage plantPart 4-6:Boiler auxiliaries - Flue gas desulphurisation (De-SOx) plantPart 4-7:Boiler auxiliaries - Ash handling plantPart 4-8:Boiler auxiliaries - Dust handling plantPart 4-9:Boiler auxiliaries - SootblowersPart 4-10:Boiler auxiliaries - Flue gas denitrification (De-NOx) plantPart 5-1:Turbines - Steam turbinesPart 5-2:Turbines - Gas turbinesPart 5-3:Turbines - Wind turbinesPart 5-4:Turbines - Hydraulic turbines, storage pumps and pump-turbinesPart 6-1:Turbine auxiliaries - DeaeratorsPart 6-2:Turbine auxiliaries - Feedwater heatersPart 6-3:Turbine auxiliaries - Condenser plantPart 6-4:Turbine auxiliaries - PumpsPart 6-5:Turbine auxiliaries - Dry cooling systemsSIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)5Part 6-6:Turbine auxiliaries - Wet and wet/dry cooling towersPart 6-7:Turbine auxiliaries - Moisture separator reheatersPart 6-8:Turbine auxiliaries - CranesPart 6-9:Turbine auxiliaries - Cooling water systemsPart 7-1:Pipework and valves - High pressure piping systemsPart 7-2:Pipework and valves - Boiler and high pressure piping valvesPart 8-1:Control and instrumentationEN 45510 part 1 contains those clauses common to all the above Guides giving the provisions of anon equipment specific nature for use in the procurement of power station plant. EN 45510 is theresponsibility of JTFPE. The so called "common clauses", as appropriate, also appear in italics inthe documents specific to particular equipment.In this Guide, words in bold type indicate that they have the meaning given in the definitions, clause3.In this Guide, words and sentences not in italics are specific to this Guide and refer to the particularequipment covered.According to the CEN/CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.According to the CEN/CENELEC Internal Regulations, the national electrotechnical committees ofthe following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland andUnited Kingdom.SIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)61ScopeThis standard gives guidance on writing the technical specification for the procurement ofcoal handling and bulk storage plant for use in electricity generating stations (powerstations). This Guide for procurement is not applicable to equipment for use in the nuclearreactor plant area of nuclear power stations. Other possible applications of such equipmenthave not been considered in the preparation of this Guide.This Guide covers all the permanent equipment which could be needed in a coal handlingand bulk storage plant, for example:-wagon unloaders or wagon tipplers;-barges or ship unloaders;-machines for coal handling on the yard, coal stackers and coal reclaimers (bucketwheels, scrapers);-silos for coal mixing, buffer silos, hoppers, boiler house bunkers;-transfer towers between belt conveyors;-belt conveyors, bucket elevators;-metal structures (towers, conveyor tunnels);-screens and crushers;-metal separators for coal (magnetic or non magnetic pieces);-sampling devices, continuous weighers;-trippers or shuttle belt conveyors filling up boiler house bunkers.Some of the provisions may be applicable to other solid fuels, additives, by-products andwaste.This guide does not cover the wharf, railway line or roads, boats, trains, trucks and othermodes of transport to the site and their extension within the site. It does not cover mobileequipment such as bulldozers to compact coal heaps.The equipment covered by this Guide is defined by its function rather than design type.Therefore, the guidance to the specification is stated in performance terms rather than beingspecified by a detailed description of the equipment to be supplied.This Guide indicates to potential purchasers how their specification should be prepared sothat:-the equipment type and capacity interfaces correctly with other elements of thesystems;-predicted performance is achieved;-ancillary equipment is properly sized;-reliability, availability and safety requirements are achieved;-proper consideration is given to the evaluation process and the quality measures to beapplied.This Guide does not determine the type of specification (e.g. detailed, performance,functional) or the extent of supply for any given contract which is normally decided on thebasis of the purchaser’s project strategy. It does not cover:-any commercial, contractual or legal issues which are normally in separate parts ofSIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)7an enquiry;-any allocation of responsibilities which are determined by the contract.This Guide does not prescribe the arrangement of the documents in the enquiry.NOTE

As a comprehensive European environmental policy is still under preparation, this Guide doesnot address the environmental implications of the equipment.2Normative referencesThis Guide for procurement incorporates by dated or undated reference, provisions fromother publications. These normative references are cited in the appropriate places in the text,and the publications are listed hereafter. For dated references, subsequent amendments to orrevisions of any of these publications apply to this Guide only when incorporated in it byamendment or revision. For undated references, the latest edition of the publication referredto applies (including amendments).EN ISO 9001, Quality management systems - Requirements (ISO 9001:2000).IEC 60050-191, International electrotechnical vocabulary - Chapter 191: Dependability andquality of service.3Terms and definitionsFor the purposes of this Guide, the following terms and definitions apply.3.1Organisational terms3.1.1purchaserrecipient of a product and/or a service provided by a supplier3.1.2supplierperson or organisation that provides a product and/or a service to the purchaser3.1.3specificationdocument stating technical requirements of the purchaser. It may form part of an enquiryissued by a purchaser3.1.4enquiryinvitation to tender issued by a purchaser. It will normally include a specification togetherwith the necessary contractual and commercial conditions3.1.5tenderoffer made by a tenderer in response to an enquirySIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)83.1.6tendererperson or organisation submitting a tender for the equipment in response to the enquiry3.1.7siteplace to which the equipment is to be delivered or where work is to be done by the supplier,together with so much of the area surrounding as the supplier may, with the consent of thepurchaser, use for the purposes of the contractNOTE

Further definitions of useful organisational terms can be found in EN ISO 9000 (seeBibliography).3.2Technical terms3.2.1coal handling and bulk storage plantequipment comprising unloaders, conveyors, silos, etc. which together form a system forunloading, transporting and storing coal3.2.2conveyor tunnelenclosed or partially enclosed housing for one or more belt conveyors3.2.3buffer silointermediate coal store, whose capacity complements the available coal quantity to feed theboilers when the coal reclaimers are on stand-by (night, week end)3.2.4continuous maximum operating conditionmaximum condition at which the plant may be operated for a period not exceeding thespecified design life. This is the operating condition under which the performance tests areusually conducted3.2.5transfer towerjunction between successive belt conveyors. It houses the upstream conveyor head unit (headdrive pulley, motor drive unit) and downstream conveyor end unit (feed hopper, tail pulley,tension station)3.2.6belt conveyorequipment for the continuous conveyance of coal on a rubber belt with a trough section,supported by rollers and stretched between a head drive pulley and a tail pulley3.2.7trippermovable equipment on rails above a series of silos or bunkers, pouring down coal from thebelt conveyor to the silos or bunkersSIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)93.2.8shuttle belt conveyorreversible belt conveyor (fixed or mobile on rails), conveying coal or other material on anendless loop to specific transfer point or points3.2.9counterweight stretcher (take-up device)device for conveyor belt tension and stretch adjustment according to the load. The belt has avertical U shape with a drum bearing a counterweight at its low point3.2.10boiler house bunkerscoal stores located above each coal mill3.2.11crushermachine for reducing the raw coal to the size required for feeding to a mill or to a grate orfluidized bed boiler3.3General terms3.3.1equipmentplant, component, system and/or associated service to be provided in response to the enquiry3.3.2conformityfulfilment of specified requirements by a product, process or service3.3.3performanceobligations verified by specified tests3.3.4operating periodtime between planned outages or maintenance periods during which the equipment is inoperation and/or does not restrict operational requirements of the power station3.3.5life expectancytime period over which the equipment might be expected to operate with plannedmaintenance but without replacement of a significant component, for example, a coalreclaimer is a significant component3.3.6design lifeoperating hours of the equipment on which design calculations are based3.3.7acceptabilitycompliance with criteria defined by the purchaser for assessing the suitability of equipmentSIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)103.3.8equipment marginsallowance for design, fabrication or operating contingency defined in the specification.These are separate to those normally included by the supplier for his own purposes3.3.9proven equipmentequipment which may be demonstrated to be similar to that offered and has operated for asufficient time to have demonstrated performance and availability3.3.10availabilityas defined in IEC 60050-1913.3.11reliabilityas defined in IEC 60050-1913.3.12maintainabilityas defined in IEC 60050-1914Brief overall project description4.1Role and organisation of purchaserThe enquiry should define the purchaser’s role in the project, including whether thepurchaser will assume responsibility for the planning and technical coordination of theproject, or whether other organisations will be appointed to carry out all or part of thisfunction. The enquiry should define all organisational interfaces and the procedures to beemployed for managing the contract and the site.4.2Site locationThe specification should describe the geographical location of the site which may includesurveying points, the previous use of the site and any local features such as impact ofindustrial or military activities and planning restrictions.Where applicable, the specification should indicate site datum on specification drawings andspecify site and drawing orientation and define co-ordinate axes (x, y, z) and numberingorder to ensure consistency between suppliers of connected equipment.Where appropriate, the specification should define the permitted ground loading,SIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)11dimensional and time restrictions on access routes up to but not including public roads orrailways.The specification should identify, where appropriate, the environment of the site in which theequipment will operate. The following factors may normally be included if appropriate:- climatic e.g. atmospheric pressure, annual variation of air and cooling watertemperature, relative humidity, rain fall, icing, snow, wind velocity (normal andmaximum), lightning. If appropriate, the specification should indicate the statisticallyobserved maximum wind velocities and duration, for example if a stacking/reclaimingmachine with boom and bucket wheel has to be shut-down when wind exceeds acertain speed (see 7.8).-geological e.g. seismic conditions and characteristics of subsoil (e.g. caverns, glidingstratifications, load bearing capability of subsoils);-geographic e.g. elevation, influence of local topography and structures;-hydrological e.g. flooding and tides.4.3Equipment taskThe specification should describe in general terms the function, task or role of the equipmentto be purchased, e.g. whether it is part of a new power generating plant, a modification to anexisting power generating plant, or replacement equipment.Where appropriate, the specification should define the function and the known limitations, ifany, in the equipment connected to that which is being supplied so that the equipment mayavoid imposing adverse conditions or the supplier may suggest modifications to connectedequipment which would ensure satisfactory operation.4.4Equipment to be purchasedThe specification may define the equipment type or arrangement to be purchased, forexample:-the general arrangement of the coal yard and whether or not coal has to be compacted;-the types of coal handling machines, for example reversible bucket-wheel, lateralscraper, frontal scraper, bucket-wheel on rolling girder, etc.;-the redundancy of the main equipment;-the arrangement of the wagon unloading station and whether it is outdoor or coveredagainst rainfall and the type of unloading equipment (specific self discharging coalwagons with automatic bottom trap doors or high-sided open wagon);-any unusual type of equipment, for example, curved conveyors, closed belts, bucketbelts, conveyors with reversal of the return strand, etc.;- the type of machine distributing coal to the boiler house bunkers (trippers or shuttlebelt conveyors).The specification may also define preferences for equipment types (or give information)SIST EN 45510-4-5:2003

EN 45510-4-5:2002 (E)12regarding compatibility with existing equipment, if required.The specification should define the intended methods or local practice for maintenance,inspection and operation.The specification should define requirements with regard to the general appearance of theequipment (e.g. dimensions, shape or colour) to meet local planning requirements or specificcriteria, where such requirements exist.The specification may define any preferences with regard to the grouping of systems, forexample include the fire detection system with the supply of conveyors and motor drive units.The specification may also define any preferences for equipment types (or give information)regarding compatibility with existing equipment.NOTE

Attention is drawn to European, national and/or local legislation which can place restrictionsin this area.4.5Control and instrumentationThe specification should define the general requirements for t

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