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ID:52931897
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页数:9页
时间:2020-04-02
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1、MoreLessons“Re-Learned”fromCorrosionUnderInsulationAcknowledgementsThispresentationispartofDowChemicalCompanyeffortstopreventcorrosionunderinsulationevents.ItwasdevelopedbytheGlobalMechanicalIntegritySafetyStandardSteeringTeam.OurspecialacknowledgetoTimOve
2、rton,formerChiefProcessSafetyEngineer(retiredonAugust/09).MoreLessons“Re-Learned”fromCorrosionUnderInsulationPresenters,RenatoSampaio,LatinAmericaProcessSafetyTechnologyLeader,TheDowChemicalCompany,rsampaio@dow.comAntônioLuizM.V.Leite,SeniorSpecialistMecha
3、nicalEngineer,TheDowChemicalCompany,almelovieiraleite@dow.comAbstractMechanicalIntegrityprogramshavebeenanessentialelementofprocesssafetyprogramsinthechemicalandpetroleumindustriesfordecades.Thisisanareawhereconsiderablematerialshavebeenpublishedregardingi
4、ndustrybestpracticesforinspectionandmaintenance–includingexcellentadviceoninspectionfor“corrosionunderinsulation”.However,TheDowChemicalCompanyexperiencedasignificantnearmisseventatonefacilityrecentlycausedbylapsesinunderstandingbylocalpersonnelofcorrosion
5、underinsulation,aswellasinadequateleveragingoflearningsfromplantsofsimilardesign.ThispaperexplainsthecircumstancesbehindthiseventandthekeylessonsDowlearnedtohelpothercompaniesavoidsimilaroccurrences.BeforetheincidentDow’sprocesssafetyperformancehistoricalp
6、erformancehasbeengood.Nomultiplefatalityincidentssince1981.BothInjury/Illnessstatisticsandnormalizedprocesssafetyincidentperformanceareamongtheindustry’sbest.Dowhadcorporate-widemechanicalintegrityprogramsinplacesincethe1960s–andthemechanicalintegrityprogr
7、amstandardcalleduponpipinginspectionsconsistantwithAPI570since2001forpipinginhighlyhazardousservices(earlierstandardsexistedthatmaynothavebeenalignedtoAPI570).Thecompanyexperiencedafewlinefailuresresultingfromcorrosionunderinsulation(CUI);however,mostofthe
8、sefailureswereinpipingsystemsnotmeetingDow’sprevioushazardcriteriawithinthemechanicalintegritysafetystandard.However,somelesssevereincidentsandafewclosecallshadoccurred.Dowupdateditscorporatemechanicalintegri
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