BS-EN-ISO-9905-1998.pdf

BRITISH STANDARD BS EN ISO 9905:1998 Technical specifications for centrifugal pumps Class I The European Standard EN ISO 9905:1997 has the status of a British Standard ICS 23.080 Incorporating Amendment No. 1 to BS 7784:1994 (renumbers BS as BS EN ISO 9905:1998) and incorporating Corrigendum No. 1 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9905:1998 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1994 The following BSI references relate to the work on this standard: Committee reference MCE/6 Draft for comment 91/76635 DC ISBN 0 580 23256 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Engineering Sector Board to Technical Committee MCE/6, upon which the following bodies were represented: British Chemical Engineering Contractors Association British Hydromechanics Research Association British Pump Manufacturers Association Department of Trade and Industry (National Engineering Laboratory) Electricity Association Energy Industries Council Engineering Equipment and Materials Users Association UK Offshore Operators Association Limited Water Services Association of England and Wales The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Rubber Manufacturers Association Ltd. Process Plant Association South West Water Authority Amendments issued since publication © BSI 2006 Amd. No. DateComments 9864February 1998 Indicated by a sideline in the margin 16277 Corrigendum No. 1 31 July 2006Changes to Clause 1 and addition to bibliography Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9905:1998 © BSI 2006 i Contents Page Committees responsibleInside front cover National forewordiii 1Scope3 2Normative references3 3Definitions3 4Design6 5Materials24 6Shop inspection and tests25 7Preparation for dispatch28 8Responsibilities28 Annex A (normative) Centrifugal pump Data sheet29 Annex B (normative) External forces and moments on branches34 Annex C (normative) Enquiry, proposal, purchase order41 Annex D (normative) Documentation after purchase order41 Annex E (informative) Peak displacement42 Annex F (informative) Examples of seal arrangements43 Annex G (informative) Piping arrangements for seals45 Annex H (informative) Code for identification of fluid connections62 Annex J (informative) Materials and material specifications for centrifugal pump parts63 Annex K (informative) Check-list65 Annex L (informative) Bibliography66 Annex ZA (normative) Normative references to international publications with their relevant European publications 67 Figure 1 Driver output percentage of rated pump power required in the range of 1 kW to 100 kW64 Figure 2 Conditions of critical speed64 Figure 3 Maximum spacing between shaft guide bushes (vertical lineshaft pumps)64 Figure E.1 Single amptitude A, as a function of speed of rotation for various rms-velocity values42 Figure F.1 Soft packing (P)43 Figure F.2 Single mechanical seal (S)43 Figure F.3 Multiple mechanical seal (D)44 Figure F.4 Quench arrangement (Q) for soft packing, single and multiple mechanical seal44 Table 1 Limits of vibration severity for horizontal pumps with multivane impellers11 Table 2 Minimum running clearances14 Table 3 Maximum coupling end floats22 Table B.1 Characteristics of horizontal pump families35 Table B.2 Characteristics of vertical pump families36 Table B.3 Basic values of forces and moments for horizontal and vertical pumps38 Table B.4 Coefficients for actual values of horizontal pumps39 Table B.5 Coefficients for actual values of vertical pumps39 Table H.1 Identification of corrections for measurement devices63 Table H.2 Identification of corrections for auxiliary devices63 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9905:1998 ii © BSI 2006 Page Table J.1 Material specification for centrifugal pump parts63 Table J.2 Material code for mechanical seal components64 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9905:1998 © BSI 2006 iii National foreword The Technical Committee has reviewed the provisions of ISO 7-1:1982, ISO 185:1988, ISO 228-1:1982, ISO 427:1983, ISO 544:1989, ISO 2858:1975, ISO 3069:1974, ISO 3274:1975, ISO 7005-1:1992, ISO 7005-2:1988 and ISO 7005-3:1988 to which normative reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. 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 document comprises a front cover, an inside front cover, pages i to iv, the EN ISO title page, pages 2 to 67 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. This British Standard has been prepared by Technical Committee MCE/6 and is the English language version of EN ISO 9905:1997 Technical specifications for centrifugal pumps Class I, including Corrigendum February 2005, published by the European Committee for Standardization (CEN). It is identical with ISO 9905:1994 published by the International Organization for Standardization (IS) and in the development of which the United Kingdom played an active part. In 1997 the European Committee for Standardization (CEN) accepted ISO 9905:1994 as European Standard EN ISO 9905:1997. As a consequence of implementing the European Standard this British Standard is renumbered as BS EN ISO 9905:1998 and any reference to BS 7784:1994 should be read as reference to BS EN ISO 9905:1998. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 9905 October 1997 ICS 23.080.00 Descriptors: See ISO document English version Technical specifications for centrifugal pumps Class I (ISO 9905:1994) Spécifications techniques pour pompes centrifuges Classe I (ISO 9905:1994) Kreiselpumpen technische Anforderungen Klasse I (ISO 9905:1994) This European Standard was approved by CEN on 18 September 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status 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, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9905:1997 E Incorporating Corrigendum February 2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9905:1997 © BSI 2006 2 Foreword The text of the International Standard from Technical Committee ISO/TC 115, Pumps, of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC 197, Pumps, the secretariat of which is held by AFNOR. 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 April 1998, and conflicting national standards shall be withdrawn at the latest by April 1998. According to CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 9905:1994 has been approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 9905:1994(E) © BSI 2006 3 1 Scope 1.1 This International Standard covers the Class I (most severe) requirements for centrifugal pumps used in various industries. It consists of a basic text covering general requirements. The technical requirements refer only to the pump unit. Storage pumps are not included in this International Standard. A separate standard will be issued by IEC. 1.2 This International Standard includes design features concerned with installation, maintenance and safety of such pumps, including baseplate, coupling and auxiliary piping. 1.3 Where this International Standard specification has been called for: a) and requires a specific design feature, alternative designs may be offered which meet the intent of this International Standard, provided that the alternative is described in detail; b) pumps not complying with all requirements of this International Standard may be offered for consideration, provided that all deviations are stated. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 7-1:1982, Pipe threads where pressure-tight joints are made on the threads Part 1: Designation, dimensions and tolerances. ISO 76:1987, Rolling bearings Static load ratings. ISO 185:1988, Grey cast iron Classification. ISO 228-1:1982, Pipe threads where pressure-tight joints are not made on the threads Part 1: Designation, dimensions and tolerances. ISO 281:1990, Rolling beatings Dynamic load ratings and rating life. ISO 1940-1:1986, Mechanical vibration Balance quality requirements of rigid rotors Part 1: Determination of permissible residual unbalance. ISO 2372:1974, Mechanical vibration of machines with operating speeds from 10 to 200 rev/s Basis for specifying evaluation standards. ISO 2548:1973, Centrifugal, mixed flow and axial pumps Code for acceptance tests Class C (It is planned to combine ISO 2548 with ISO 3555 during their next revision to create a new International Standard). ISO 2858:1975, End-suction centrifugal pumps (rating 16 bar) Designation, nominal duty point and dimensions. ISO 3069:1974, End suction centrifugal pumps dimensions of cavities for mechanical seals and for soft packing. ISO 3274:1975, Instruments for the measurement of surface roughness by the profile method Contact (stylus) instruments of consecutive profile transformation Contact profile meters, system M. ISO 3506:1979, Corrosion-resistant stainless steel fasteners Specifications. ISO 3555:1977, Centrifugal, mixed flow and axial pumps Code for acceptance tests Class B (It is planned to combine ISO 3555 with ISO 2548 during their next revision to create a new International Standard). ISO 3744:1981, Acoustics Determination of sound power levels of noise sources Engineering methods for free-field conditions over a reflecting plane. ISO 3746:1979, Acoustics Determination of sound power levels of noise sources Survey method. ISO 3755:1991, Cast carbon steels for general engineering purposes. ISO 4863:1984, Resilient shaft couplings Information to be supplied by users and manufacturers. ISO 7005-1:1992, Metallic flanges Part 1: Steel flanges. ISO 7005-2:1988, Metallic flanges Part 2: Cast iron flanges. ISO 7005-3:1988, Metallic flanges Part 3: Copper alloy and composite flanges. ISO 427:1983, Wrought copper-tin alloys Chemical composition and forms of wrought products. ISO 544:1989, Filler materials for manual welding Size requirements. The requirements of this International Standard do not apply to centrifugal pumps used in petroleum, petrochemical and natural gas applications. The requirements for centrifugal pumps used in these applications are given in ISO 13709. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 08:51:09 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 9905:1994(E) 4 © BSI 2006 3.2 rated conditions specified guarantee-point operating conditions, including flowrate, head, power, efficiency, net positive suction head, suction pressure, temperature, density, viscosity and speed 3.3 operating conditions all operating parameters (for example temperature, pressure) determined by a given application and pumped liquid these parameters will influence the type of construction materials 3.4 allowable operating range flow range, defined by the manufacturer/supplier, at the specified operating conditions using the impeller supplied, as limited by cavitation, heating, vibration, noise, shaft deflection and other similar criteria; range whose upper and lower limits are denoted by maximum and minimum continuous flow, respectively 3.5 maximum allowable casing working pressure greatest outlet pressure at the specified operating temperature for which the pump casing is suitable 3.6 basic design pressure pressure derived from the permitted stress at 20 °C of the material used for the pressure-containing parts 3.7 maximum outlet working pressure sum of the maximum inlet pressure plus maximum differential pressure at rated conditions using the supplied impeller 3.8 rated outlet pressure outlet pressure of the pump at the guarantee point wi