BRITISHSTANDARDBSIEC61511-3:2003Functionalsafety—Safetyinstrumentedsystemsfortheprocessindustrysector—Part3:GuidanceforthedeterminationoftherequiredsafetyintegritylevelsICS25.040.01����������������������������������������������������������������������CopyrightBritishStandardsInstitutionProvidedbyIHSunderlicensewithBSINotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--``,,-`-`,,`,,`,`,,`---BSIEC61511-3:2003ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30April2003©BSI30April2003ISBN0580417522NationalforewordThisBritishStandardreproducesverbatimIEC61511-3:2003andimplementsitastheUKnationalstandard.TheUKparticipationinitspreparationwasentrustedbyTechnicalCommitteeGEL/65,Measurementandcontrol,toSubcommitteeGEL/65/1,Systemsconsiderations,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthissubcommitteecanbeobtainedonrequesttoitssecretary.Cross-referencesTheBritishStandardswhichimplementinternationalpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theIECtitlepage,pages2to53andabackcover.TheBSIcopyrightdatedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsCopyrightBritishStandardsInstitutionProvi...
