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1、BRITISH STANDARD BS EN 12162:2001 Liquid pumps Safety requirements Procedure for hydrostatic testing The European Standard EN 12162:2001 has the status of a British Standard ICS 23.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na,
2、Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12162:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 05-2001 ISBN 0 58
3、0 37089 5 National foreword This British Standard is the official English language version of EN 12162:2001. The UK participation in its preparation was entrusted to Technical Committee MCE/6, Pumps and pump testing, which has the responsibility to: A list of organizations represented on this commit
4、tee can be obtained on request to its secretary. Cross-references The British Standards which implement international 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 usi
5、ng the “Find” facility of the BSI Standards Electronic 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
6、 from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summar
7、y of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments L
8、icensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12162 March 2001 ICS 23.080 English version Liquid pumps - Safety requirements - Procedure for hydrostatic testing Pompes pour liquides - Exi
9、gences de scurit - Procdure dessai hydrostatique Flssigkeitspumpen - Sicherheitstechnische Anforderungen - Prozessverfahren fr hydrostatische Druckprfung This European Standard was approved by CEN on 18 January 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which sti
10、pulate 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 Management Centre or to any CEN member. This European Standard ex
11、ists 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 Management Centre has the same status as the official versions. CEN members are the national standards bod
12、ies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
13、Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12162:2001 E Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page
14、 2 EN 12162:2001 Contents Foreword3 Introduction.4 1Scope 5 2Normative references 5 3Terms and definitions6 4General6 5Timing of the test.6 6Preparation for testing 7 7Test equipment 7 8Test liquid.7 9Test pressure7 10Test procedure.8 11Acceptance criteria9 12Repairs9 13Test Records 9 Annex A (infor
15、mative) Random sample schedule11 Annex ZA (informative) Relationship of this document with EC Directives13 Bibliography14 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 12162:2001 Foreword This European Standard has been prepared
16、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 September 2001, and conflicting national standards shall be
17、withdrawn at the latest by September 2001. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex ZA
18、, which is an integral part of this document. Annex A is informative. According to the 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,
19、 Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 12162:2001 Introduction CEN have prepared a series of r
20、elated machinery safety standards, some of which are to be harmonised European Standards, in order to implement the essential requirements for health and safety set down in the Supply of Machinery (Safety) Directive. This European Standard is one of this series and provides the procedure to be used
21、for a specific verification requirement of EN 809. The subject of this European Standard is the proving of the integrity of pump parts intended to withstand internal pressure. It refers, therefore, to the in-process testing of pump parts so that each item may be considered to have been examined. Thi
22、s European standard is a type C standard as stated in EN 1070. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 12162:2001 1 Scope This standard specifies the hydrostatic test procedure to be applied to pressure containing parts of
23、all types of liquid pumps including any auxiliary equipment making up a pump unit as described in the scope of EN 809:1998, except : ? domestic water pumps within the scope of EN 60335-2-41:1996 or EN 60335-2-51:1997 ; ? domestic circulation pumps within the scope of EN 1151:1999 ; ? submersible pum
24、ps within the scope of prEN 13386:1998 ; ? fire-fighting pumps with primers within the scope of prEN 1028-1:1993 and prEN 1028-2:1993 ; ? pump parts with a maximum allowable working pressure below 0.1 bar. Requirements are included for applying an hydrostatic test at different pressures to separate
25、zones within a pump which are subject to different allowable maximum working pressures. This standard is for pumps and pump units which are placed upon the market after the publication date of the standard. 2 Normative references This European Standard incorporates by dated or undated reference, pro
26、visions from other publications. These normative references are cited at 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 European Standard only when incorporated in it
27、 by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 809:1998, Pumps and pump units for liquids - Common safety requirements. prEN 1028-1:1993, Fire fighting pumps - Fire fighting centrifugal pumps with primer - Part 1
28、 : Classification - General and safety requirements. prEN 1028-2:1993, Fire fighting pumps - Fire fighting centrifugal pumps with primer - Part 2 : Classification - Verification of general and safety requirements. EN 1151:1999, Rotodynamic pumps - Circulation pumps having an electrical effect not ex
29、ceeding 200 W for heating installations and domestic hot water installations - Requirements, testing, marking. EN 12723:2000, Liquid pumps - General terms for pumps and installations - Definitions, quantities, letter symbols and units. prEN 13386:1998, Liquid pumps - Submersible pumps and pumps unit
30、s for liquids - Particular safety requirements. EN 60335-2-41:1996, Safety of household and similar electrical appliances - Part 2: Particular requirements for electric pumps for liquids having a temperature not exceeding 35 C. EN 60335-2-51: 1997, Safety of household and similar electrical applianc
31、es - Part 2: Particular requirements for stationary circulation pumps of heating and service water installations. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 6 EN 12162:2001 3 Terms and definitions For the purposes of this standard,
32、 EN 12723:2000 and the following definition apply: “Item“ or “items to be tested“ any part, component, sub-assembly, pump or pump units which is to be the subject of hydrostatic pressure test1) 4 General 4.1All pressure containing items shall be hydrostatically pressure tested. The purpose of this h
33、ydrostatic test is to demonstrate the absence of leakage through pressure containing walls of any item under test and from the joints formed by an assembly of items under test, by imposing a defined pressure in excess of the allowable working pressure for which the item is supplied. 4.2This test pro
34、cedure shall be applied to a sampling programme only where the manufacturer can show the validity of the sampling programme and that it is appropriate for the application. An example of a sampling programme is given in annex A. 4.3Pumps with double volutes, multiple stages, and otherwise with intern
35、al separating walls and to be tested segmentally shall have a hydrostatic pressure applied to each segment related to the operating conditions in the segment when the pump is working at its allowable working pressure. 4.4Pressure containing chambers which function independently shall be tested separ
36、ately without pressure being applied to any adjacent chamber. 4.5To avoid excessive loads on crank-shafts in multiplex reciprocating pump assemblies those elements in the suction stage of the cycle shall be supported or disconnected from the crank-shaft. 5 Timing of the test The manufacturer shall a
37、llow sufficient time during manufacture for the test and examination of all items within the scope of this standard. The test may be carried out on an individual item or on a sub-assembly as a group of items. Normally, the hydrostatic test is carried out : ? after completion of machining ; ? prior t
38、o the application of coatings, insulation, and overlays, (protection of raw parts against rust shall not be considered as a coating) ; ? following non-destructive testing, or after special leak tests below a gauge pressure of 0,5 bar ? on reciprocating positive displacement pumps, at the start of th
39、e performance test of the fully assembled pump. 1) A rotating mechanical seal assembled into a pump or into a separate sub-assembly, together with an end plate to connect the stationary elements of the seal to the stationary parts of the pump, will not be considered as an item to be tested but may b
40、e subjected to the test pressure. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 7 EN 12162:2001 6 Preparation for testing 6.1Items to be subjected to test shall be free from grease, oil and other contaminants, and any cleaner used sha
41、ll be compatible with the materials of manufacture of the pump, its auxiliaries, and its intended use. 6.2The items to be tested are to be assembled for the test and all openings are to be blanked-off by appropriate means which may include blind flanges, plugs, closures and tension rings. Care shall
42、 be taken in selecting the closure arrangements not to impose forces capable of distorting the items under test nor of otherwise obscuring any leak. Through bolting shall not be used unless it is part of the construction of the item being tested. 6.3The item to be tested and the gauge lines are to b
43、e vented and filled completely with the test liquid. 6.4Wherever feasible the mating parts and fasteners used in any assembly shall be those to be used in the delivered pump, otherwise reasons for deviating from this requirement shall be recorded. 7 Test equipment 7.1The test equipment shall compris
44、e a device for generating the test pressure using a test liquid defined in clause 8.1, the item to be tested prepared in accordance with clause 6, and a pressure indicating device. NOTEThe device generating the test pressure may be the pump under test. 7.2The hydrostatic test shall be carried out wi
45、th calibrated pressure gauges. The pressure indicating device selected shall be accurate to within ? 1,5 % of the reading at the test pressure. The reference point for the pressure shall be the lowest point of the item to be tested. The applied test pressure shall be uniformly distributed within the
46、 item being tested. 8 Test liquid 8.1The hydrostatic test is normally to be carried out using clean water at ambient temperature, with the addition of corrosion preventative and organic growth inhibitors where necessary. If the properties of the material imposes a limit on the test temperature which
47、 affects the test procedure this is to be noted on the test record. 8.2An alternative liquid shall be used where clean water is not appropriate for the application. The liquid used and the reason for its selection shall be recorded. Where residual chloride deposition is not acceptable for the applic
48、ation, the chloride content of the test liquid shall not exceed 50 ppm (0,005 %). 9 Test pressure 9.1The hydrostatic test pressure relates to the allowable working pressure at ambient temperature of the items to be tested. Where the items to be tested are to be offered for general application the te
49、st pressure shall relate to their maximum allowable working pressure. 9.2The hydrostatic test pressure shall be calculated from the formula: allw21test PKKP? where test pis the hydrostatic test pressure ; allw pis the allowable working pressure at operating temperature ; 1 Kis a factor whose value shall be determined by the pump specification, but shall not be less than 1,3 ; Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:36:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 8 EN 12162:2001 2 Kis a factor whose value shall be determined by the material st