1、DEUTSCHE NORM June 1999 Guide for procurement of power station equipment Part 4-7: Boiler auxiliaries - Ash handling plant English version of DIN EN 4551 0-4-7 DIN EN 45510-4-7 ICs 27.040; 27.100 Leitfaden fr die Beschaffung von Ausrstungen fr Kraftwerke - Teil 4-7: Nebenanlagen - Aschetransport- an
2、lage European Standard EN 4551 0-4-7 : 1999 has the status of a DIN Standard. National foreword This standard has been prepared by CENKENELEC Joint Task Force Power Engineering. The responsible German body involved in its preparation was the Normenausschu bewachungs- bedrftige Anlagen (Standards Com
3、mittee on installations subject to mandatory inspection). This standard is based on EU Council Directive 93/38/EEC. DIN EN IS0 9001 and DIN EN IS0 9002 are the standards corresponding to International Standards IS0 9001 and IS0 9002, respectively, referred to in clause 2 of the EN. National Annex NA
4、 Standards referred to (and not included in Normative references) DIN EN IS0 9001 Quality systems - Model for quality assurance in design/development, production, in- stallation and servicing (IS0 9001 : 1994) DIN EN IS0 9002 Quality systems - Model for quality assurance in production and installati
5、on (IS0 9002 : 1994) Council Directive of 14 June 1993 coordinating the procurement procedures of entities operating in the water, energy, transport and telecommunications sectors (93/38/EEC) EN comprises 24 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. D
6、IN EN 4551 0-4-7 : 1999-0 Y Deutsches Institut fr Normung e. V., Berlin. wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 13 Sales No . . 1113 11.99 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 45510-4-7 April 1999 ICs 27
7、.040; 27.1 O0 English version Guide for procurement of power station equipment Part 4-7: Boiler auxiliaries - Ash handling plant Guide pour lacquisition dquipe- ments destins aux centrales de production dlectricit - Partie 4-7: Auxiliaires de chaudire - Manuten- tion des machefers Leitfaden fr die B
8、eschaffung von Ausrstungen fr Kraftwerke - Teil 4-7: Nebenanlagen - Asche- transportanlage This European Standard was approved by CENKENELEC on 1999-04-01. CENKENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard
9、 the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national stand- ards may be obtained on application to the Central Secretariat or to any CEN/ CENELEC member. The European Standards exist in three official versions (English, F
10、rench, German). A version in any other language made by translation under the responsibility of a CENKENELEC member into its own language and notified to the Central Secre- tariat has the same status as the official versions. CENKENELEC members are the national standards bodies and national electrot
11、echnical committees, respectively, of Austria, Belgium, the Czech Repub- lic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxem- bourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN Central Secretariat: rue de Stassart 36, 8-1050 B
12、russels CENELEC Central Secretariat: rue de Stassart 35, 8-1050 Brussels O 1999. CENKENELEC - All rights of exploitation in any form and by any means reserved worldwide for CEN national members and for CENELEC members. Ref. No. EN 45510-4-7 : 1999 E Page 2 EN 4551 0-4-7 : 1999 Contents Page Foreword
13、 4 1 Scope 6 2 Normative references 7 3 Definitions 7 3.1 Organisational terms . 7 3.2 Technical terms 7 3.3 General terms . 9 4 Brief overall project description . 9 4.2 Site location . 9 4.3 Equipment task . 10 4.5 Control and instrumentation 10 4.6 Electrical supplies and other services . 11 4.7
14、Other interfaces 11 4.9 Equipment identification systems . 5 Extent of supply . 11 6 Terminai points 12 7 Operational requirements . 12 7.1 Operating environment . 12 7.2 Manning levels 12 4.1 Role and organisation of purchaser . 4.4 Equipment to be purchased 10 4.8 Project programme 7.3 Normal oper
15、ation 13 7.4 Operating hours 13 7.5 Start-up and shut-down . 13 7.6 Abnormal conditions . 13 7.7 Further operational requirements 13 8 Life expectancy 13 8.1 Design life . 13 8.2 Components requiring periodic maintenance . 14 9 Performance requirements . 14 9.1 Duty . 14 9.2 Performance . 14 9.3 Equ
16、ipment margins 15 9.4 Availability 15 9.5 Levels of component redundancy . 15 9.6 Further performance requirements . 15 10.1 Specific equipment features . 15 10.4 Safety 10.5 Interchange 17 10.6 Fabrication 17 11 Maintenance requirements . 17 1 1.1 Planned maintenance . 17 11.2 Personnel safety . 17
17、 1 1.3 Requirements for access 18 11 . 4 Lifting requirements 18 11.5 Special tools . 11.6 Test equipment 10 Design and fabrication 15 10.2 Design justification 16 10.3 Material selection 17 11.7 Spare parts strategy . . 18 Page 3 EN 4551 0-4-7 : 1999 11.8 Special precautions . 18 12 Technical docum
18、entation requirements 18 12.1 Tender documentation . . 18 12.2 Contract documentation 19 13 Applicable legislation, regulations, standards and further requirements . 19 13.1 Legislation and regulations . . 19 13.2 Standards . . . 19 13.3 Further requirements 19 14 Evaluation criteria 19 14.1 General
19、 14.2 Technical criteria . . 20 15 Quality measures . 20 15.1 General . 20 15.2 Approvals procedure . 20 15.3 Inspection requirements 21 16 Site factors ,., 21 16.2 Facilities 21 16.3 Site specific requirements . 21 17.1 General . 22 17.2 Works tests . 22 17.3 Test during installation and commission
20、ing . 17.4 Technical conditions for trial run . 22 17.5 Functional and performance tests 23 Annex A (informative): Bibliography 24 15.4 Non-conformity 21 16.1 Access 21 17 Verification of specified performance . 22 Page 4 EN 4551 0-4-7 : 1999 Foreword This European Standard has been prepared by Tech
21、nical Committee CEN/CC JTFPE “Joint Task Force Power Engineering; the secretariat of which is held by BSL 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 October 1999, and conflicfiing national st
22、andards shall be withdrawn at the latest by October 1999. According to the CEN/CENE. EC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard Austria, Behiurn, Czech Republic, Denmark, finland, France, Germany, Greece, Ice
23、land, Ireland, Ita Part 5- 1: Part 5-2: Part 5-3: Part 5-4: Part 6- 1: Part 6-2: Part 6-3: Part 6-4: Part 6-5: Part6-6: Part 6- 7. Part 6-8: Part 6-9: Part 7- 1: Part 7-2: Common Clauses Electrical equipment - Po wer transformers Electrical equipment - Uninterruptible power supplies Electrical equip
24、ment - Stationary batteries and chargers Electrical equipment - High power static converters Electrical equipment - Motors Electrical equipment - Generators Electrical equipment - Switchgear and control gear Electrical equipment - Power cables Electrical equipment - Cabling systems Boilers - Water t
25、ube boilers Boilers - Shell boilers Boilers - Boilers with fluidized bed firing Boiler auxiliaries - EquNment for reduction of dust emissions Boiler auxiliaries - Gas-air, steam-air and gas-gas heaters Boiler auxiliaries - Draught plant Boiler auxiliaries - Fuel preparation equipment Boiler auxiliar
26、ies - Coal handling and bulk storage plant Boiler auxiliaries - Flue gas desulphurisation (De-SOJ plant Boiler auxiliaries - Ash handbng plant Boiler auxiliaries - Dust handling plant Boiler auxiliaries - Sootblowers Boiler auxiliaries - Flue gas denitrification (De-NOJ plant Turbines - Steam turbin
27、es Turbines - Gas turbines Turbines - Wind turbines Turbines - Hydraulic turbines, storage pumps and pump-turbines Turbine auxiliaries - Deaerators Turbine auxiliaries - Feedwater heaters Turbine auxiliaries - Condenser plant Turbine auxiliaries - Pumps Turbine auxiliaries - Dry cooling systems Turb
28、ine auxiliaries - Wet and we4dry cooling towers Turbine auxiliaries - Moisture separator reheaters Turbine auxiliaries - Cranes Turbine auxiliaries - Cooling water systems Pipe work and valves - High pressure piping systems Pipe work and valves - Boiler and high pressure piping valves Page 5 EN 4551
29、 0-4-7 : 1999 Part 8- ?: EN 45510 part I contains those clauses common to all the above Guides giving the provisions of a non equipment specific nature for use in the procurement of po wer station plant. EN 455 I O is the responsibility of JTFPE. The so called “common clauses; as appropriate, also a
30、ppear in italics in the documents specific to particular equipment. In this Guide, words in bold type indicate that they have the meaning given in the definitions, clause 3 In this Guide, words and sentences not in italics are specific to this Guide and refer to the particular equipment covered. Con
31、trol and instrumentation Page 6 EN 4551 0-4-7 : 1999 I Scope This standard gives guidance on writing the technical specification for the procurement of equipment for ash handling associated with coal fired steam generating plant for use in electricity generating stations (power stations). This Guide
32、 for procurement is not applicable to equipment for use in the nuclear reactor plant area of nuclear power stations. Other possible applications of such equipment have not been considered in the preparation of this Guide. This Guide covers mechanical conveying systems which handle the ash mechanical
33、ly. Among those are for example: - submerged scraper conveyor; - ram-type slag extractor; - belt conveyor; - drag-link conveyor; - vibratory conveyor; - screw conveyor; - apron conveyor: - bucket elevator; - Skip hoist; - vehicles. Hydraulic conveying systems use water as conveying medium. These inc
34、lude for example: - water-filled ash hopper; - dry ash hopper; - sluiceway; - slurry pump with pipeline; - ejector with pipeline. Generally a combination of the above systems is employed. The equipment covered by this Guide is defined by its function rather than design type. Therefore, the guidance
35、to the specification is stated in performance terms rather than being specified by a detailed description of the equipment to be supplied This Guide indicates to potential purchasers how their specification should be prepared so that: - the equipment type and capacity interfaces correct4 with other
36、elements of the systems such as the - predicted performance is achieved; - ancillay equipment is properly sized; - reliability, availability and safety requirements are achieved; - proper consideration is given to the evaluation process and the quality measures to be applied boiler and gas treatment
37、 plant; 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 normal - any allocation of responsibibties which are determined by the contract. This Guide does not prescribe the arrangement of the docum
38、ents in the enquiry NOTE. As a comprehensive European environmental policy is still under preparation, this Guide does not address the environmental implcations of the equipment. Page 7 EN 4551 0-4-7 : 1999 2 Normative references This Guide for procurement incorporates by dated or undated reference,
39、 pro visions from other 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 or revisions of any of these publications apply to this Guide only when incorporated in it by ame
40、ndment or revision. For undated references, the latest edition of the publication referred to applies. EN IS0 900 1 EN IS0 9002 IEC 60050 (19 1) Quality systems - Model for quality assurance in design, development, production, installation and servicing (IS0 9007: 7994). Quality systems - Model for
41、qualiv assurance in production, installation and servicing (IS0 9002: 1994). International electrotechnical vocabulary. 3 Definitions For the purposes of this Guide, the following definitions apply: 3. I Organisational terms 3.1. 1 purchaser: Recipient of a product and/or a service provided by a sup
42、pfier. 3.1.2 suppfier. Person or organisation that provides a product and/or a service to the purchaser. 3.1.3 specification: Document stating technical requirements of the purchaser. It may form part of an enquiry issued by a purchaseE 3.1.4 enquily: Invitation to tender issued by a purchaser. It w
43、ill normally include a specification together with the necessary contractual and commercial condtions. 3.1.5 tender: Offer made by a tenderer in response to an enquiv. 3.1.6 tenderer: Person or organisation submitting a tender for the equipment in response to the enquiry. 3.1.7 site: Place to which
44、the equipment is to be delivered or where work is to be done by the suppfier, together with so much of the area surrounding as the suppfier may, with the consent of the purchaser, use for the purposes of the contract. NO JE: Further definitions of useful organisational terms may be found in EN IS0 8
45、402 (see Annex A). 3.2 Technical terms 3.2. 7 Operating conditions 3.2.1.1 ash handling plant: Equipment comprising devices for extraction, conveying, intermediate storage, treatment and loading for delivery by means of mechanical or hydraulic systems which together form a system to remove combustio
46、n residues such as ash or slag for utilisation or dumping. 3.2.1.2 ash: Residue of fuel after combustion consisting of mineral matter and some unburnt combustibles. Depending on chemical composition and temperature during combustion the mineral matter may be partially sintered. 3.2.1.3 bottom ash or
47、 coarse ash: Ash extracted from the combustion chamber of dry bottom pulverised fuel furnace. 3.2.1.4 bed ash: Ash extracted from the bed of fiuidised bed furnaces. 3.2.1.5 fly ash: Dust burden entrained in the flue gas leaving the combustion chamber 3.2.1.6 slag: Residue of fuel after combustion in
48、 furnaces with high temperature conditions in the combustion chamber where a high percentage of the mineral matter is fused. Slag-tap furnaces are often operated with re-injection of fly ash after precipitation into the combustion chamber for retention in the slag flow. 3.2.1.7 grate slag: Slag extr
49、acted from grate furnaces. Page 8 EN 4551 0-4-7 : 1999 3.2.1.8 quenched. Slag-tap furnaces are often operated with re-injection of the fly ash into the combustion chamber. 3.2.1.9 operated for a period not exceeding the specified design life. granulate: Slag discharged from the slag-tap hole of a slag-tap furnace in molten state and finally continuous maximum operating condition: Maximum conditim at which the equipment may be 3.2.2 Mechanical conveying 3.2.2.1 ash hopper: Lowest part of the combustion chamber of a dry bottom pulverised fuel furnace or of
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