1、BRITISH STANDARD Guide for procurement of power station equipment - Part 7-2: Pipework and valves - Boiler and high pressure valves The European Standard EN 45510-7-2: 1999 has the status of a British Standard ICs 23.MO.01; 27.100 NO COPYING WiTHOT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
2、 BS EN 455 10-7-2:2000 BS EN 45510-7-2:2000 National foreword This British Standard is the English language version of EN 45517-2:1999. The UK participation in its preparation was entnisted to Technical Committee W-DO, Power engineering steering committee, which has the responsibility to: - aid enqu
3、irers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; them in the UK. This British Standard, having been
4、prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and cornes into effect on 15 January 2000 O BSI 01-2000 ISBN O 580 35366 4 A list of organizations represented on this committee can be obtained on request to its secretary.
5、 Cross-references The British Standards which implement internationai or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Elec
6、tronic Catalogue. A British Standard does not purport to include all the necessary provisions 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 d
7、ocument comprises a front cover, an inside front cover, the EN title page, pages 2 to 24, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd.No. IComments STD-BSI BS EN Y5510-
8、7-2-ENGL 2000 m 1b29bbS 082i-1500 2T3 m EN 45510-7-2 EUROPEAN STANDARD NORME EUROPENNE EUROPAISCHE NORM October 1999 ICs English version Guide for procurement of power station equipment - Part 7-2: Pipework and valves - Boiler and high pressure piping valves Guide pour lacquisition dquipements desti
9、ns aux centrales de production dlectricit - Partie 7-2: Tuyauterie et robinetterie - Robinetterie pour chaudires et tuyauterie Leitfaden fr die Beschaffung von Ausrstungen fr Kraftwerke - Teil 7-2: Rohrleitungen und Armaturen - Kessel- und Rohrleitungensarmaturen This European Standard was approved
10、by CENICENELEC on 1 October 1999. CENICENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving th6 European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references cotcerning suc
11、h national standards may be obtained on application to the Central Secretariat or to any CENICENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by traislation under the responsibility of a CENICENELEC member into i
12、ts own language and notified to the Central Secretariat has the same stitus as the official versions. CENICENELEC members are the national standards bodies and national electrotechnical committees, respectively, of Austria, Belgum, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,
13、Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,Spain, Sweden, Switzerland and United Kingdom. CEN Central Secretariat: rue de Stassart, 36 B-1050 Brussels CENELEC CENELEC Central Secretariat: rue de Stassart, 35 B-1050 Brussels O 1999 CENICENELEC All rights of exploitation in any form and
14、 by any means reserved worldwide for CEN national Members and for CENELEC Members. Ref No EN 45510-7-2 1999 E STD-BSI BS EN 45510-7-2-ENGL 2000 lb2Ybb9 OB29501 L3T m Page 2 EN 4551 O-7-2:1999 Contents: Page Foreword 4 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 7.4 7.
15、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 10.4 10.5 10.6 11 Scope - 6 Normative references . 6 Definitions . 7 Organizational terms 7 Technical terms . 7 General terms 7 Brief overall project description - 8 Role and organization of purchaser . 8 Site location . 8 Equipme
16、nt task 9 Equipment to be purchased - 9 Electrical supplies and other services . 9 Other interfaces *-. 10 Control and instrumentation systems . 9 Project programme . 10 Equipment identification systems 10 Extent of supply 10 Terminal points . 11 Operational requirements 11 Operating environment - 1
17、1 Normal operation . I2 Start-up and shut-down . - 12 Abnormal conditions . . 12 Further operational requirements 13 Life expectancy - 13 Design life 13 Performance requirements . - 14 Performance 14 Manning levels . 12 Operating hours . ._. 12 Components requiring periodic maintenance 13 Duty 14 Eq
18、uipment margins . 14 Availability .-. 14 Levels of component redundancy 14 Design and fabrication . ._ 15 Specific equipment features 15 Design justification . 17 Material selection . ._. 17 Safety _ . 17 Interchangeability . . 17 Fabrication methods . 17 Further performance requirements 15 Maintena
19、nce requirements . .- . 17 OBSI 01-2000 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 12 12.1 12.2 13 13.1 13.2 13.3 14 14.1 14.2 15 15.1 15.2 15.3 15.4 16 16.1 16.2 16.3 17 17.1 17.2 17.3 17.4 17.5 Page 3 EN 4551 O-7-2:1999 Planned maintenance . 17 Personnel safety . .-. 18 Requirements for access . 18 L
20、ifting requirements . 18 Special tools *- 18 Spare parts strategy . 18 Special precautions 18 Technical documentation requirements . 19 Tender documentation . .-. . 19 Contract documentation . 19 Test equipment _. 18 Applicable legislation. regulations, standards and further requirements . 19 Furthe
21、r requirements .I . 20 Evaluation criteria ._. 20 Legislation and regulations . 19 Standards .-. 20 General . 20 Technical criteria _ 20 Quality measures 21 Inspection requirements 21 General .-. 21 Approvals procedure .- 21 Non-conformi ty 21 Site factors 21 Access 21 Facilities - 22 Site specific
22、requirements 22 Verification of specified performance . 22 General . _. 22 Works tests 22 Test during installation and commissioning . 23 Technical conditions for trial run -. 23 Functional and performance tests . 23 Bibliography _ . 24 OBSI 01-2000 Page 4 EN 4551 O-7-2:1999 Fore word This European
23、Standard has been prepared by Technical Committee CEN/CLC JTFPE, 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 - ancillary equipment is properly sized; - reliability, availability and safet
24、y 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 specification (e.g. detailed, performance, functional) or the extent of supply for any given contract which is normally decided on
25、the basis of the purchasers project strategy. It does not cover: - any commercial, contractual or legal issues which are normally in separate parts of the enquiry; - any allocation of responsibilities which are determined by the contract. This Guide does not prescribe the arrangement of the document
26、s in the enquiry. NOTE: As a comprehensive European environmental policy is still under preparation, this Guide does not address the environmental implications of the equipment. 2 Normative references This Guide for Procurement incorporates by dated or undated reference, provisions from other public
27、ations. 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 amendment or revision. For undate
28、d references, the latest edition of the publication referred to applies. EN IS0 9001 Quality systems - Model for quality assurance in design, development, production, installation and servicing (IS0 9001:1994) OBSI 01-2000 STD-BSI BS EN V55LO-7-2-ENGL 2000 m lb29bb 082950b 711 m Page 7 EN 4551 O-7-2
29、:1999 EN IS0 9002 IEC 60050-1 9 i Quality systems - Model for quality assurance in production, installation and servicing (IS0 9002:1994) International electrotechnical vocabulaty - Chapter 191: Dependability and quality of service. 3 Definitions For the puvoses of this Guide, the following definiti
30、ons apply. 3.1 Organizational terms 3.1.1 purchaser: Recipient of a product andor a service provided by a supplier. 3.1.2 supplier: Person or organization that provides a product and/or a service to the purchaser. 3.1.3 specification: Document stating technical requirements of the purchaser. It may
31、form part of an enquiry issued by a purchaser. 3.1.4 enquiry: Invitation to tender issued by a purchaser. It will normally include a specification together with the necessary contractual and commercial conditions. 3.1.5 tender: Offer made by a tenderer in response to an enquiry. 3.1.6 tenderer: Pers
32、on or organization submitting a tender for the equipment in response to the enquiry. 3.1.7 site: Place 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 the purchaser, use for
33、the purposes of the contract. NOTE: Further definitions of useful organizational terms may be found in EN IS0 8402 (see Bibliography), 3.2 Technical terms 3.2.1 systems 3.2.2 hot water production. 3.2.3 from a boiler, turbine etc. and to points of discharge. 3.2.4 These may typically comprise: valve
34、: Mechanical device used for control of medium in boiler plant and high pressure piping boiler plant: Boiler with connected components and systems forming a functional unit for steam or high pressure piping system: System of pipes, valves, etc. conveying steam and water to and terminal conditions: C
35、onditions imposed on the plant at the terminal points of the piping system. - feedwater conditions - main steam conditions, cold and reheat steam conditions design conditions: Values of conditions used in design calculations such as the design pressure medium conditions: Conditions which define the
36、thermodynamic and chemical state of the running hours: Number of hours during which the plant has been in operation. 3.2.5 and temperature for a defined piping section. 3.2.6 medium 3.2.7 3.3 General terms 3.3.1 enquiry. equipment: Plant, component, system and/or associated service to be provided in
37、 response to the OBSI 01-2000 Page 8 EN 4551 0-7-211 999 3.3.2 conformity: Fulfilment of specified requirements by a product, process or service. 3.3.3 performance: Obligations verified by specified tests. 3.3.4 operating period: Time between planned outages or maintenance periods, during which the
38、equipment is in operation and/or does not restrict operational requirements of the power stations. 3.3.5 life expectancy: Continuous time period over which the equipment might be expected to operate with planned maintenance but without replacement of a significant component For example, a valve body
39、 is a significant component. 3.3.6 3.3.7 equipment. 3.3.8 specification. These are separate to those normally included by the supplier for his own purposes. 3.3.9 operated for a suficient time to have demonstrated performance and availability. 3.3.1 O 3.3.1 i 3.3.12 design life: Operating hours of t
40、he equipment on which design calculations are based. acceptability: Compliance with criteria defined by the purchaser for assessing the suitability of equipment margins; Allowance for design, fabrication or operating contingency defined in the proven equipment; Equipment which may be demonstrated to
41、 be similar to that offered and has availability: As defined in IEC 6U50- 7 9 I reliability: As defined in IEC 60050- 19 I maintainability; As defined in IEC 60050- 19 1 4 Brief overall project description 4.1 The enquiry should define the purchasers role in the project, including whether the purcha
42、ser will assume responsibility for the planning and technical coordination of the project, or whether other organizations will be appointed to carry out all or patt of this function. The enquiry should define all organizational interfaces and the procedures to be employed for managing the contract a
43、nd the site. Role and organization of purchaser 4.2 Site location The specification should describe the geographical location of the site which may include surveying points, the previous use of the site and any local features such as impact of industrial or military activities and planning restricti
44、ons. Where applicable, the specification should indicate site datum on specification drawings and spec site and drawing orientation and define coordinate axis (x, y, z) and numbering order to ensure consistency between suppliers of connected equipment. Where appropriate, the specification should def
45、ine the permitted ground loading, dimensional and time restrictions on access routes up to but not including public roads or railways. The specification should identiv, where appropriate, the environment of the site in which the equipment will operate. The following factors may normally be included
46、if appropriate: climatic: e.g. atmospheric pressure, annual variation of air and cooling water temperature, relative humidity, rain fall, icing, snow, wind velocity (normal and maximum), lightning and other phenomena; geological: e.g. seismic conditions and characteristics of subsoil (e.g. caverns,
47、gliding stratifications, load bearing capability of subsoils); geographic: e.g. elevation, influence of local topography and structures; hydrological: eng. flooding and tides. OBSI 01-2000 Page 9 EN 4551 0-7-211 999 4.3 Equipment task The specification should describe in general terms the function,
48、task or role of the equipment to be purchased. e.g. whether it is patt of a new power generation plant, a modification to an existing power generation plant, or replacement equipment. Where appropriate, the specification should define the function and any known limitations, if any, in the equipment
49、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 satisfactory operation. 4.4 Equipment to be purchased The specification may define the equipment type or arrangement to be purchased. The purchaser may identify the type of valve required for each duty, for example: Shut-off valve Non-return valve/Check valve Safety valve Valve for drains, vents The specification should define whether complete valves with auxi
