ENGINEERING DESIGN GUIDELINE-Relief Valves - rev 02[1].pdf

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1、Page:1of62KLMTechnologyGroupRev:01PracticalEngineeringGuidelinesforProcessingOctober2007PlantSolutionswww.klmtechgroup.comAuthor:AiLLingKLMTechnologyGroupPRESSURERELIEFVALVEUnit23-04MenaraLandmarkSELECTIONANDSIZINGCheckedby:12JalanNgeeHengKarlKolmetz80

2、000JohorBahru,(ENGINEERINGDESIGNGUIDELINE)MalaysiaTABLEOFCONTENTINTRODUCTIONScope5ImportantofPressureReliefSystem6ReliefDevicesDesignConsideration6(A)Causeofoverpressure6(I)BlockedDischarge7(II)FireExposure7(III)CheckValveFailure8(IV)ThermalExpansion8(

3、V)UtilityFailure8(B)ApplicationofCodesandStandard9(C)Determinationofindividualrelievingrates10DesignProcedure11DEFINITIONS12NOMENCLATURE14KLMTechnologyPage2of62GroupSECTION:Rev:01PracticalEngineeringPRESSURERELIEFVALVEGuidelinesforProcessingPlantSoluti

4、onsSELECTIONANDSIZINGOctober2007(ENGINEERINGDESIGNGUIDELINE)THEORY16SelectionofPressureReliefValve16(A)ConventionalPressureReliefValve16(B)BalancedReliefValves18(C)PilotOperatedReliefValves20(D)RuptureDisk23StandardReliefValveDesignation26ProcedureforS

5、izing28(A)SizingforGasorVaporReliefforCriticalFlow28(B)SizingforGasorVaporReliefforSubcriticalFlow30(C)SizingforSteamRelief31(D)SizingforLiquidRelief:RequiringCapacityCertification33(E)SizingforLiquidRelief:NotRequiringCapacityCertification34(F)Sizingf

6、orTwo-phaseLiquid/VaporRelief35(G)SizingforRuptureDiskDevices35(H)SizingforExternalFire36Installation38(A)PressureDropLimitationsandPipingConfigurations38Thesedesignguidelinearebelievedtobeasaccurateaspossible,butareverygeneralandnotforspecificdesignca

7、ses.Theyweredesignedforengineerstodopreliminarydesignsandprocessspecificationsheets.Thefinaldesignmustalwaysbeguaranteedfortheserviceselectedbythemanufacturingvendor,buttheseguidelineswillgreatlyreducetheamountofupfrontengineeringhoursthatarerequiredto

8、developthefinaldesign.Theguidelinesareatrainingtoolforyoungengineersoraresourceforengineerswithexperience.Thisdocumentisentrustedtotherecipientpersonally,butthecopyrightremainswithus.Itmustnotbecopied,reproducedorinanywaycommunicatedorm