SpecificationforGlycol-TypeGasDehydrationUnitsAPISPECIFICATION12GDU(SPEC12GDU)FIRSTEDITION,DECEMBER15,1990AmericanPetroleumInstitute1220LStreet,NorthwestWashington,DC20005JPIssuedbyAMERICANPETROLEUMINSTITUTEProductionDepartmentFORINFORMATIONCONCERNINGTECHNICALCONTENTSOFTHISPUBLICATIONCONTACTTHEAPIPRODUCTIONDEPARTMENT,2535ONEMAINPLACE,DALLAS,TX75202-3904-(214)748-3841.SEEBACKSIDEFORINFORMATIONCONCERNINGHOWTOOBTAINADDITIONALCOPIESOFTHISPUBLICATION.Usersofthispublicationshouldbecomefamiliarwithitsscopeandcontent.ThispublicationIsIntendedtosupplementratherthanreplaceindividualengineeringjudgment.OFFICIALPUBLICATIONipREG.U.S.PATENTOFFICECopyright©1990AmericanPetroleumInstitute2AmericanPetroleumInstituteTABLEOFCONTENTSPageForeword............................................................3Policy...............................................................4Section1:Scope.....................................................5Section2:Terminology...............................................6Section3:ProcessDescription........................................8Section4:Material.................................................10Section5:Design....................................................12Section6:Fabrication,TestingandPainting..........................15Section7:Marking..................................................16Section8:InspectionandRejection...................................17AppendixA:ProcessConsiderations..................................18AppendixB:CorrosionControlGuidelines............................19AppendixC:DehydrationDesignInformation.........................21AppendixD:SizingCalculations.....................................26AppendixE:ExampleCalcuations...................................33AppendixF:StructuralDesignGuidelines............................34AppendixG:CombustionEfficiency..................................35AppendixH:Installation,Start-up,OperationandMaintenance........37AppendixI:UseofAPIMonogram.....................................
