1、1 Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry,Inc.127 Part Street,NE Vienna,Virginia 22180(703)281-6613 Quality Standard for Steel Castings and Forgings for Valves,Flanges,and Fittings and Other Piping Components MSS MSS SP
2、-53-1999 Reaffirmed 2002 Magnetic Particle Examination Method COPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesCOPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesMSSSTANDAR
3、D PRACTICESP-53iAn MSS Standard Practice is intended as a basis for common practice bythe manufacturer,the user,and the general public.The existence of anMSSStandardPracticedoesnotinitselfprecludethemanufacture,sale,oruseofproductsnotconformingtotheStandardPractice.Mandatoryconformanceisestablishedo
4、nlybyreferenceinacode,specification,sales contract,or public law,as applicable.UnlessotherwisespecificallynotedinthisMSSSP,anystandardreferredtohereinisidentifiedbythedateofissuethatwasapplicabletothereferencedstandard(s)atthe dateofissue ofthisMSS SP.(See Annex A.)InthisStandardPracticeallnotes,ann
5、exes,tables,andfiguresareconstruedtobeessentialtotheunderstandingofthemessageofthestandard,andareconsideredpartofthetextunlessnotedassupplemental.All appendices appearing in this document are construedassupplemental.Supplementalinformationdoesnotincludemandatory requirements.U.S.customary units in t
6、his SP are the standard;the metric units arefor reference only.Substantive changes in this 1999 edition are flagged byparallel bars as shown on the margins of this paragraph.Thespecific detail of the change may be determined by comparingthe material flagged with that in the previous edition.Non-tole
7、rancedDimensionsinthisStandardPracticearenominal,and,unless otherwise specified,shall be considered for reference only.Anypartofthisstandardmaybequoted.Creditlinesshouldreadextracted from MSS SP-53,1999,with permission ofthe publisher,theManufacturersStandardizationSociety.Reproductionprohibitedunde
8、rcopyrightconventionunlesswrittenpermissionisgrantedbytheManufacturersStandardizationSocietyoftheValveandFittingsIndustry,Inc.Originally Approved February,1957 Copyright,1985 byManufacturers Standardization Societyof theValve and Fittings Industry,Inc.Printed in U.S.A.COPYRIGHT Manufacturers Standar
9、dization Society of the Valve and FittingsLicensed by Information Handling ServicesCOPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesMSSSTANDARD PRACTICESP-53ii FOREWORD Thestandardpracticeprovidesmethodsandacceptancestandardsformagneti
10、cparticleexaminationofferriticsteelvalves,flanges,fittings and other piping components by use of dry magnetic powder orwet magnetic particles.It is applicable to examination of repairs aswell as to initial examination of castings and forgings.COPYRIGHT Manufacturers Standardization Society of the Va
11、lve and FittingsLicensed by Information Handling ServicesCOPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesMSSSTANDARD PRACTICESP-53iii TABLE OF CONTENTS SECTION PAGE TERMS AND CONDITIONS.i FOREWORD.ii TABLE OF CONTENTS.iii 1.SCOPE.1 2.
12、DEFINITIONS.1 3.PROCEDURES.1 4.ACCEPTANCE STANDARDS.2 5.REFERENCE PHOTOGRAPHS.2 6.REMOVAL AND REPAIR OF DISCONTINUITIES.2 TABLE 1:Acceptance Standards.3 ANNEX A:Referenced Standards and Applicable Dates.4 COPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Informatio
13、n Handling ServicesCOPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesMSSSTANDARD PRACTICESP-531QUALITY STANDARD FOR STEEL CASTINGS AND FORGINGS FOR VALVES,FLANGES&FITTINGS&OTHER PIPING COMPONENTS 1.SCOPE 1.1ThemethodsofSection3.0provide
14、uniformprocedureswhichwillproducesatisfactoryandconsistentresultsuponwhichtheacceptancestandardsofTable1 may be used.1.2Thisexaminationguidemaybeusedonavoluntarybasisorwhenspecifiedintheinquiry,contract,ororderandwhenmutuallyagreeduponbythemanufacturerandthepurchaser.1.3ThisStandardPracticeincludes
15、the examinationofpressurecontainingcastings and forgings.2.DEFINITIONS 2.1PressureContainingPiece-A piece whose failure wouldpermit the containedfluid toescape to the atmosphere.Forvalvesthebodyandbonnet(cover)andendpieces(ofmulti-piecevalvebodies,e.g.,ball valves)shall be 2.2Indication-Adetectablem
16、agneticparticleaccumulationresulting from a distortion of themagnetic field.2.3LinearIndication-Anindicationinwhichthelengthismore than three times the width.2.4RoundedIndication-Anindication which is circularor elliptical with its length lessthan three times its width.2.5StandardDefinitions-SeeASTM
17、E1316TerminologyforNondestructive Examination.3.PROCEDURE 3.1Allexteriorandaccessibleinteriorsurfacesofthepressurecontaining parts shall be examinedbythemagneticparticlemethod.Examinationmayoccurpriortomachiningoraftermachiningatthemanufacturersoption.Thisstandard practice may also be usedforexamina
18、tionofotherpartswhenmutuallyagreeduponbythemanufacturerandthepurchaser.consideredthepressurecontainingpieces.COPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesCOPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLice
19、nsed by Information Handling ServicesMSSSTANDARD PRACTICESP-5323.2Magneticparticleproceduresandpersonnelqualificationrequirementsfor casting examinationshallbeinaccordancewithASTME709.Forforging,theexaminationproceduresandpersonnelqualificationrequirementsshallbeinaccordancewithASTMA275/A275M.4.ACCE
20、PTANCE STANDARDS AcceptanceStandardsformagnetic particle indicationsshall be as shown in Table 1.5.REFERENCE PHOTOGRAPHS 5.1 Typical Magnetic Particle Indications are shown in ASTM E 125,Reference Photographs for Magnetic ParticleIndicationsonFerrousCastings.5.2Indicationsofwelddiscontinuitiesillust
21、ratedinASTME125aremerelyexamplesofdiscontinuitesinweldrepairsandnotdegreeof severity.5.3 The ten examples of falseindicationsandmagneticanomaliesillustratedinASTME125arenecessaryasaguidetothetypeofindicationsandnotnecessarilyindicativeofanyconditionsconcerningintegrityorusefulnessunderthescopeofqual
22、ityhereindefined.Itisrecognizedthatinsomeinstancessurveys by methods other thanmagneticparticleexaminationmay be necessary toestablishwhatindicationsbelongtothese categories.6.REMOVAL AND REPAIR OF DISCONTINUITIES 6.1Partsrejectedthroughtheapplicationofthesestandardsmayberepaired.Ifweldingisrequired
23、,it shall be in accordancewiththerequirementspecifiedintheapplicablesteelcastingorforging specifications.6.2Discontinuitiesinexcessofthoserepresentedbyacceptableindicationsshallberemovedbysuitablemeans.Ifremovalofsurfacediscontinuitiestoanacceptable level does not result inreducingthewallthicknessbe
24、lowtheacceptableminimum,theareashallbeblendedsmoothlyintosurroundingsurface.Whereremovalofdiscontinuitiesresultsinawall thickness below the acceptableminimum,theresultantcavitymayberepairedbywelding.Weldedareasshallbeblendedsmoothlyinto surrounding surface.6.3Areaswhichasaresultofmagnetic particle e
25、xamination,havebeenweldrepairedorfromwhichdiscontinuitieshavebeenremovedwithoutrequirementforweldrepair,shall be re-examined by themagnetic particle method.6.4Theacceptancestandardsformagneticparticlere-examinationrequired under Section 6.3 shall beasshowninTable1.COPYRIGHT Manufacturers Standardiza
26、tion Society of the Valve and FittingsLicensed by Information Handling ServicesCOPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesMSSSTANDARD PRACTICESP-533 TABLE 1-ACCEPTANCE STANDARDS A.Castings Maximum acceptable indications are as fo
27、llows:Linear indications as defined in Subsection 2.3 0.3(8 mm)long for materials up to 0.5(13 mm)thick0.5(13 mm)long for materials 0.5 to 1(13 mm to 25 mm)thick0.7(18 mm)long for materials over 1(25 mm)thick Forlinearindications,theindicationsmustbeseparatedbyadistance greater than the length of an
28、 acceptable indication.Rounded indications as defined in Subsection 2.40.3(8 mm)dia.for materials up to 0.5(13 mm)thick0.5(13 mm)dia.for materials over 0.5(13 mm)thick Four or more rounded indications in a line separated by 0.06(2mm)or less edge to edge are unacceptable.B.Forgings Maximum acceptable
29、 indications are as follows:Linear indentions as defined in Subsection 2.3 0.2(5 mm)long for materials 0.5(13 mm)or less thick0.4(10 mm)long for materials 0.5 to 1(13 mm to 25 mm)thick0.6(15 mm)long for materials over 1(25 mm)thick Forlinearindications,theindicationsmustbeseparatedbyadistance greate
30、r than the length of an acceptable indication.Rounded indications as defined in Subsection 2.4 0.2(5 mm)dia.for materials up to 0.5(13 mm)thick0.3(8 mm)dia.for materials over 0.5(13 mm)thick Four or more rounded indications in a line separated by 0.06(2 mm)or less edge to edge are unacceptable.COPYR
31、IGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesCOPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesMSSSTANDARD PRACTICESP-534 ANNEX A REFERENCE STANDARDS AND APPLICABLE DATES T
32、his Annex is an integral part of this Standard Practice and is placedafter the main text for convenience.Standard Name or Description ASTMA 275/A 275 M-1996Standard Test Method for Magnetic ParticleExamination of steel castingsE 125-1997Standard Reference Photographs for MagneticParticle Indications
33、 onFerrous CastingsE 709-1995Standard Guide for Magnetic ParticleExaminationE 1316-1997bStandard Terminology for NondestructiveExaminationPublications of the following organization appear in the above list.ASTMAmerican Society for Testing and Materials100 Barr Harbor Drive,West Conshohocken,PA19428-
34、2959COPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling ServicesCOPYRIGHT Manufacturers Standardization Society of the Valve and FittingsLicensed by Information Handling Services List of MSS Standard Practices(Price List Available Upon Request)Nu
35、mberSP-6-2001Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and FittingsSP-9-2001Spot Facing for Bronze,Iron and Steel FlangesSP-25-1998Standard Marking System for Valves,Fittings,Flanges and UnionsSP-42-1999Class 150 Corrosion Resistant Gate,Globe,Angle and
36、 Check Valves with Flanged and Butt Weld EndsSP-43-1991(R 01)Wrought Stainless Steel Butt-Welding FittingsSP-44-1996(R 01)Steel Pipeline FlangesSP-45-1998Bypass and Drain ConnectionsSP-51-2000Class 150LW Corrosion Resistant Cast Flanges and Flanged FittingsSP-53-1999(R 02)Quality Standard for Steel
37、Castings and Forgings for Valves.Flanges and Fittings and Other Piping Components-MagneticParticle Examination MethodSP-54-1999(R 02)Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-RadiographicExamination MethodSP-55-2001Quality Standard for Steel Cast
38、ings for Valves,Flanges,Fittings,and Other Piping Components-Visual Method for Evaluation ofSurface IrregularitiesSP-58-1993Pipe Hangers and Supports-Materials,Design and ManufactureSP-60-1999Connecting Flange Joint Between Tapping Sleeves and Tapping ValvesSP-61-1999Pressure Testing of Steel Valves
39、SP-65-1999High Pressure Chemical Industry Flanges and Threaded Stubs for Use with Lens GasketsSP-67-2002Butterfly ValvesSP-68-1997High Pressure Butterfly Valves with Offset DesignSP-69-1996Pipe Hangers and Supports-Selection and ApplicationSP-70-1998Cast Iron Gate Valves,Flanged and Threaded EndsSP-
40、71-1997Gray Iron Swing Check Valves,Flanged and Threaded EndsSP-72-1999Ball Valves with Flanged or Butt Welding Ends for General ServiceSP-73-1991(R 96)Brazing Joints for Wrought and Cast Copper Alloy Solder Joint Pressure FittingsSP-75-1998Specification for High Test Wrought Butt Welding FittingsSP
41、-77-1995(R 00)Guidelines for Pipe Support Contractual RelationshipsSP-78-1998Cast Iron Plug Valves,Flanged and Threaded EndsSP-79-1999aSocket-Welding Reducer InsertsSP-80-1997Bronze Gate,Globe,Angle and Check ValvesSP-81-2001Stainless Steel,Bonnetless,Flanged Knife Gate ValvesSP-82-1992Valve Pressur
42、e Testing MethodsSP-83-2001Class 3000 Steel Pipe Unions,Socket Welding and ThreadedSP-85-1994Cast Iron Globe&Angle Valves,Flanged and Threaded EndsSP-86-2002Guidelines for Metric Data in Standards for Valves,Flanges,Fittings and ActuatorsSP-88-1993(R 01)Diaphragm ValvesSP-89-1998Pipe Hangars and Sup
43、ports-Fabrication and Installation PracticesSP-90-2000Guidelines on Terminology for Pipe Hangers and SupportsSP-91-1992(R 96)Guidelines for Manual Operations of ValvesSP-92-1999MSS Valve User GuideSP-93-1999Quality Standard for Steel Castings and Forgings for Valves,Flanges,and Fittings and Other Pi
44、ping Components-Liquid PenetrantExamination MethodSP-94-1999Quality Std for Ferritic and Martensitic Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-UltrasonicExamination MethodSP-95-2000Swage(d)Nipples and Bull PlugsSP-96-2001Guidelines on Terminology for Valves and Fitti
45、ngsSP-97-2001Integrally Reinforced Forged Branch Outlet Fittings-Socket Welding.Threaded,and Buttwelding EndsSP-98-2001Protective Coatings for the Interior of Valves,Hydrants,and FittingsSP-99-1994(R 01)Instrument ValvesSP-100-1997Qualification Requirements for Elastomer Diaphragms for Nuclear Diaph
46、ragm Type ValvesSP-101-1989(R 01)Part-Turn Valve Actuator Attachment-Flange and Driving Component Dimensions and Performance CharacteristicsSP-102-1989(R 01)Multi-Turn Valve Actuator Attachment-Flange and Driving Component Dimensions and Performance CharacteristicsSP-103-1995(R 00)Wrought Copper and
47、 Copper Alloy Insert Fittings for Polybutylene SystemsSP-104-1995Wrought Copper Solder Joint Pressure FittingsSP-105-1996(R 01)Instrument Valves for Code ApplicationsSP-106-1990(R 96)Cast Copper Alloy Flanges and Flanged Fittings,Class 125,150 and 300SP-107-1991(R 00)Transition Union Fittings for Jo
48、ining Metal and Plastic ProductsSP-108-2002Resilient-Seated Cast-Iron Eccentric Plug ValvesSP-109-1997Welded Fabricated Copper Solder Joint Pressure FittingsSP-110-1996Ball Valves Threaded,Socket-Welding,Solder Joint,Grooved and Flared EndsSP-111-2001Gray-Iron and Ductile-Iron Tapping SleevesSP-112-
49、1999Quality Standard for Evaluation of Cast Surface Finishes-Visual and Tactile Method.This SP must be sold with a 10-surface,three dimensional Cast Surface Comparator,which is a necessary part of the Standard.Additional Comparators may be sold separately at$25.00 each.Same quantity discounts apply
50、on total order.SP-113-2001Connecting Joint between Tapping Machines and Tapping ValvesSP-114-2001Corrosion Resistant Pipe Fittings Threaded and Socket Welding,Class 150 and 1000SP-115-1999Excess Flow Valves 1 1/4 NPS and Smaller,for Natural Gas ServiceSP-116-1996Service Line Valves and Fittings for
