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1、BRITISH STANDARD Liquid pumps Safety requirements Procedure for hydrostatic testing ICS 23.080 National foreword This British Standard is the UK implementation of EN 12162:2001+A1:2009. It supersedes BS EN 12162:2001 which is withdrawn. The start and finish of text introduced or altered by amendment
2、 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 preparation was entrusted to Technical Committee MCE/6, Pumps and pump testing. A list of organiza
3、tions 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 application. Compliance with a British Standard cannot confer immunity from legal obligation
4、s. BS EN 12162:2001+A1:2009 Amendments/corrigenda issued since publication Date Comments 31 July 2009 Implementation of CEN amendment A1:2009 This British Standard was published under the authority of the Standards Committee and comes into effect on 15 May 2001 BSI 2009 ISBN 978 0 580 62246 5 EUROPE
5、AN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12162:2001+A1 May 2009 ICS 23.080 Supersedes EN 12162:2001 English Version Liquid pumps - Safety requirements - Procedure for hydrostatic testing Pompes pour liquides - Exigences de scurit - Procdure dessai hydrostatique Flssigkeitspumpen - Sicherheitst
6、echnische 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 bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
7、or 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 CEN Management Centre or to any CEN member. This European Standard exists in three offic
8、ial versions (English, French, German). A version in any other language made by translation under the respons bility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria,
9、 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, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTE
10、E 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 worldwide for CEN national Members. Ref. No. EN 12162:2001+A1:2009: E EN 12162:2001+A1:20
11、09 (E) 2 Contents Foreword 3 Introduction . 4 1Scope 5 2Normative references 5 3Terms and definitions . 6 4General 6 5Timing of the test . 6 6Preparation for testing 7 7Test equipment 7 8Test liquid . 7 9Test pressure . 7 10Test procedure . 8 11Acceptance criteria 9 12Repairs 9 13Test Records 9 Anne
12、x A (informative) Random sample schedule 11 Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/CE“ . 13 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“
13、 . 14 Bibliography 15 BS EN 12162:2001+A1:2009 EN 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 AFNOR. This European Standard shall be given the status of a national standard,
14、 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, approved by CEN on 2009-04-19. This document supersedes EN 12162:2001. The start an
15、d 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 Association, and supports essential requirements of EU Directive(s). !For relationship
16、 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 following countries are bound to implement this European Standard: Austria, Bel
17、gium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 12162:2001+A1:2
18、009 EN 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 health and safety set down in the Supply of Machinery (Safety) Directive. This Eu
19、ropean 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 withstand internal pressure. It refers, therefore, to the in-process testing
20、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+A1:2009 EN 12162:2001+A1:2009 (E) 5 1 Scope This standard specifies the hydrostatic test procedure to be applied to pressure containing parts of
21、 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 ; !deleted text“ !fire
22、-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 test at different pressures to separate zones within a pump which are subject
23、 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, provisions from other publications. Thes
24、e 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 by amendment or revision. For undate
25、d 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 fighting centrifugal pumps with primer - Part 1 : Classification - General an
26、d 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 pumps having an electrical effect not exceeding 200 W for heating installation
27、s 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 60335-2-41:1996, Safety of household and similar electrical appliances - Part 2: Par
28、ticular 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 circulation pumps of heating and service water installations. BS EN 12162:2001+A1:2
29、009 EN 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 which is to be the subject of hydrostatic pressure test1) 4 General 4.1 Al
30、l 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 formed by an assembly of items under test, by imposing a defined pressure i
31、n 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 it is appropriate for the application. An example of a sampling programme i
32、s 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 conditions in the segment when the pump is working at its allowable working
33、 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 reciprocating pump assemblies those elements in the suction stage of the cycle shall b
34、e 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 be carried out on an individual item or on a sub-assembly as a group of ite
35、ms. 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) ; following non-destructive testing, or after special leak tests below a gau
36、ge 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, together with an end plate to connect the stationary elements of the seal to the
37、 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+A1:2009 EN 12162:2001+A1:2009 (E) 7 6 Preparation for testing 6.1 Items to be subjected to test shall be free from grease, oil and other contaminants, and any cle
38、aner 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 appropriate means which may include blind flanges, plugs, closures and tension rin
39、gs. 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 construction of the item being tested. 6.3 The item to be tested and the gauge
40、 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 this requirement shall be recorded. 7 Test equipment 7.1 The test equipm
41、ent 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 test pressure may be the pump under test. 7.2 The hydrostatic test shal
42、l 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 the item to be tested. The applied test pressure shall be uniformly distr
43、ibuted 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 necessary. If the properties of the material imposes a limit on the test
44、 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 selection shall be recorded. Where residual chloride deposition is not accept
45、able 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 to be tested. Where the items to be tested are to be offered for genera
46、l application the test pressure shall relate to their maximum allowable working pressure. 9.2 The hydrostatic test pressure shall be calculated from the formula: allw21test PKKP where test p is the hydrostatic test pressure ; allw p is the allowable working pressure at operating temperature ; 1 K is
47、 a factor whose value shall be determined by the pump specification, but shall not be less than 1,3 ; BS EN 12162:2001+A1:2009 EN 12162:2001+A1:2009 (E) 8 2 K is a factor whose value shall be determined by the material strength = allowable stress at ambient temperature allowable stress at operating
48、temperature 10 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 pressurised shall be inspected for proper bolting and enclosure. 10.3 T
49、he 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 will normally be not less than 60 s. Long