1、BRITISH STANDARDBS EN 12162:2001 Liquid pumps Safety requirements Procedure for hydrostatic testingICS 23.080NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW+A1:2009 National forewordThis British Standard is the UK implementation of EN 12162:2001+A1:2009. It supersedes BS EN 12
2、162:2001 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“.The UK participation in its prepar
3、ation was entrusted to Technical Committee MCE/6, Pumps and pump testing.A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct a
4、pplication. Compliance with a British Standard cannot confer immunity from legal obligations. BS EN 12162:2001+A1:2009Amendments/corrigenda issued since publication Date Comments 31 July 2009 Implementation of CEN amendment A1:2009This British Standard was published under the authority of the Standa
5、rds Committee and comes into effect on 15 May 2001 BSI 2009 ISBN 978 0 580 62246 5EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12162:2001+A1 May 2009 ICS 23.080 Supersedes EN 12162:2001English Version Liquid pumps - Safety requirements - Procedure for hydrostatic testing Pompes pour liquides
6、 - Exigences de scurit - Procdure dessai hydrostatique Flssigkeitspumpen - Sicherheitstechnische Anforderungen - Prozessverfahren fr hydrostatische Druckprfung This European Standard was approved by CEN on 18 January 2001 and includes Amendment 1 approved by CEN on 19 April 2009. CEN members are bou
7、nd 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 C
8、EN Management Centre 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 CEN Management Centre has the same sta
9、tus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romani
10、a, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved wo
11、rldwide for CEN national Members. Ref. No. EN 12162:2001+A1:2009: EEN 12162:2001+A1:2009 (E) 2 Contents Foreword 3Introduction . 41 Scope 52 Normative references 53 Terms and definitions . 64 General 65 Timing of the test . 66 Preparation for testing 77 Test equipment 78 Test liquid . 79 Test pressu
12、re . 710 Test procedure . 811 Acceptance criteria 912 Repairs 913 Test Records 9Annex A (informative) Random sample schedule 11Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/CE“ . 13Annex ZB (informative) !Relationship between
13、 this European Standard and the Essential Requirements of EU Directive 2006/42/EC“ . 14Bibliography 15BS EN 12162:2001+A1:2009EN 12162:2001+A1:2009 (E) 3 Foreword This document (EN 12162:2001+A1:2009) has been prepared by Technical Committee CEN /TC 197, “Pumps“, the secretariat of which is held by
14、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 November 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. This document includes Amendment 1, appr
15、oved by CEN on 2009-04-19. This document supersedes EN 12162:2001. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Associa
16、tion, and supports essential requirements of EU Directive(s). !For relationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.“ Annex A is informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
17、following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
18、 Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 12162:2001+A1:2009EN 12162:2001+A1:2009 (E) 4 Introduction CEN have prepared a series of related machinery safety standards, some of which are to be harmonised European Standards, in order to implement the essential requirements for hea
19、lth 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 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
20、 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. This European standard is a type C standard as stated in EN 1070. BS EN 12162:2001+A1:2009EN 12162:2001+A1:2009 (E) 5 1 Scope This standard specifies
21、 the hydrostatic test procedure to be applied to pressure containing parts of 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 ; domes
22、tic circulation pumps within the scope of EN 1151:1999 ; !deleted text“ !fire-fighting pumps with primers within the scope of EN 1028-1:2002+A1:2008 and EN 1028-2:2002+A1:2008;“ pump parts with a maximum allowable working pressure below 0.1 bar. Requirements are included for applying a hydrostatic t
23、est at different pressures to separate 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 incorpor
24、ates by dated or undated reference, provisions 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 Europea
25、n Standard only when incorporated in it 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. !EN 1028-1:2002+A1:2008, Fire fighting pumps - Fire f
26、ighting centrifugal pumps with primer - Part 1 : Classification - General and safety requirements“ !EN 1028-2:2002+A1:2008, Fire fighting pumps - Fire fighting centrifugal pumps with primer - Part 2 : - Verification of general and safety requirements“ EN 1151:1999, Rotodynamic pumps - Circulation pu
27、mps having an electrical effect not exceeding 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. !deleted text“ EN 60335-2-
28、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 appliances - Part 2: Particular requirements for stationary circula
29、tion pumps of heating and service water installations. BS EN 12162:2001+A1:2009EN 12162:2001+A1:2009 (E) 6 3 Terms and definitions For the purposes of this standard, EN 12723:2000 and the following definition apply: “Item“ or “items to be tested“ any part, component, sub-assembly, pump or pump units
30、 which is to be the subject of hydrostatic pressure test1)4 General 4.1 All pressure containing items shall be hydrostatically pressure tested. The purpose of this hydrostatic test is to demonstrate the absence of leakage through pressure containing walls of any item under test and from the joints f
31、ormed 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. 4.2 This test procedure shall be applied to a sampling programme only where the manufacturer can show the validity of the sampling programme and that i
32、t is appropriate for the application. An example of a sampling programme is given in annex A. 4.3 Pumps with double volutes, multiple stages, and otherwise with internal separating walls and to be tested segmentally shall have a hydrostatic pressure applied to each segment related to the operating c
33、onditions in the segment when the pump is working at its allowable working pressure. 4.4 Pressure containing chambers which function independently shall be tested separately without pressure being applied to any adjacent chamber. 4.5 To avoid excessive loads on crank-shafts in multiplex reciprocatin
34、g 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 allow sufficient time during manufacture for the test and examination of all items within the scope of this standard. The test may b
35、e 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 to the application of coatings, insulation, and overlays, (protection of raw parts against rust shall not be considered as a coating) ;
36、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 the performance test of the fully assembled pump. 1)A rotating mechanical seal assembled into a pump or into a separate sub-assembly, togethe
37、r 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 be subjected to the test pressure. BS EN 12162:2001+A1:2009EN 12162:2001+A1:2009 (E) 7 6 Preparation for testing 6.1 Items to be subjected to
38、 test shall be free from grease, oil and other contaminants, and any cleaner used shall be compatible with the materials of manufacture of the pump, its auxiliaries, and its intended use. 6.2 The items to be tested are to be assembled for the test and all openings are to be blanked-off by appropriat
39、e means which may include blind flanges, plugs, closures and tension rings. Care shall 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 constr
40、uction of the item being tested. 6.3 The item to be tested and the gauge lines are to be vented and filled completely with the test liquid. 6.4 Wherever 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
41、this requirement shall be recorded. 7 Test equipment 7.1 The test equipment shall comprise 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. NOTE The device generating the
42、 test pressure may be the pump under test. 7.2 The hydrostatic test shall be carried out with 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 t
43、he item to be tested. The applied test pressure shall be uniformly distributed within the item being tested. 8 Test liquid 8.1 The 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
44、necessary. If the properties of the material imposes a limit on the test temperature which affects the test procedure this is to be noted on the test record. 8.2 An alternative liquid shall be used where clean water is not appropriate for the application. The liquid used and the reason for its selec
45、tion shall be recorded. Where residual chloride deposition is not acceptable for the application, the chloride content of the test liquid shall not exceed 50 ppm (0,005 %). 9 Test pressure 9.1 The hydrostatic test pressure relates to the allowable working pressure at ambient temperature of the items
46、 to be tested. Where the items to be tested are to be offered for general application the test pressure shall relate to their maximum allowable working pressure. 9.2 The hydrostatic test pressure shall be calculated from the formula: allw21testPKKP = where testp is the hydrostatic test pressure ; al
47、lwp is the allowable working pressure at operating temperature ; 1K is a factor whose value shall be determined by the pump specification, but shall not be less than 1,3 ; BS EN 12162:2001+A1:2009EN 12162:2001+A1:2009 (E) 8 2K is a factor whose value shall be determined by the material strength = al
48、lowable stress at ambient temperatureallowable stress at operating temperature10 Test procedure 10.1 At the start of the hydrostatic pressure test the external walls of the item to be tested shall be dry. 10.2 Prior to applying the test pressure the arrangements used to seal the chambers to be press
49、urised shall be inspected for proper bolting and enclosure. 10.3 The hydrostatic pressure shall be steadily increased in a controlled manner until the test pressure is achieved. The test pressure shall be held essentially constant for the full duration of the test period. Throughout this procedure continuous observation shall be maintained to detect any leakage. 10.4 The test pressure shall be maintained for a sufficient time to allow the item being tested to be completely inspected. This
