88B09_382_englCopyrightOInternat~onalLabourOrganization1988Fmtpubhshed1988Thirdimpression(withcorrechons)1993PublicationsoftheInternationalLabourOfficeenjoycopyrightunderProtocol2oftheUniversalCopyrightConventionNevertheless,shortexceptsfromthemmaybereproducedwithoutauthorization,onconditionthatthesourceISmdicated.Forrightsofreproductionortranslation,applicationshouldbemadetothePublicationsBranch(R~ghtsandPermissions),InternationalLabourOffice,CH-1211Geneva22,Switzerland.TheInternationalLabourOfficewelcomessuchapplications.ILOIUNEPNVHOInternationalProgrammeonChem~calSafetyMajorhazardcontrol:Apracticalmanual.Geneva,InternationalLabourOffice,1988./Guide/,/Occupationalsafety/,/Safetytraining/13042ISBN92-2-106432-8AlsopublishedinFrench.Lamaitrisedesmsquesd'accidentmajeurGuidepratique(ISBN92-2-206432-I),Geneva1993;andinSpanishControlderiesgosdeaccidentesmayores:Manualpractlco(ISBN92-2-306432-51,Geneva1990Thedocumentsonpages129to252areBritishCrowncopyright.ReproducedbypermlsslonoftheControllerofHerBritannicMajesty'sStationeryOfficeThedesignationsemployedinILOpublications,whichareinconformitywithUnltedNatlonspractice,andthepresentationofmaterialthereindonotimplytheexpressionofanyopinionwhatsoeveronthepartoftheInternationalLabourOfficeconcerningthelegalstatusofanycountry,areaorterritoryorofitsauthorities,orconcerningthedelimitationofitsfrontiers.Theresponsibilityforopinionsexpressedmsignedarticles,studiesandothercontributionsrestssolelywiththeirauthors,andpublicationdoesnotconstituteanendorsementbytheInternationalLabourOfficeoftheopinionsexpressedinthem.ReferencetonamesoffirmsandcommercialproductsandprocessesdoesnotimplytheirendorsementbytheInternationalLabourOffice,andanyfailuretomentionaparticularfirm,commercialproductorprocessisnotasignofdisapprovalTheILOwillnotberesponsiblefortheusethatmightbemadeoftheadviceglveninthismanual.LOpublicationscanbeobtainedthroughmajorbooksellersorLOlocalofficesinmanycountries,ordirectfromILOPublications,InternationalLabourOffice,CH-1211Geneva22,SwitzerlandAcatalogueorlistofnewpublicationswillbesentfreeofchargefromtheaboveaddress.PrintedInSvvltzerlandPrefaceFires,explosionsandthereleaseoftoxicgasescanthereforenotcoveredinthismanual.Alsonottakencausedeathsandinjuriestoworkersandtheintoaccountarehazardsassociatedwithnuclearpublic,resultintheevacuationofcommunitiesandindustrialactivitiesandnationalandinternationaladverselyaffecttheenvironmentasawhole.transportofdangerousgoods,becausetheDisastersthathavecometobeknownas"Base1",managementandlegislativecontrolofthese"Bhopal","Flixborough","MexicoCity"andactivitiesaregenerallytreatedseparately."Seveso"gaverisetotheterms"majorhazards"and"majorhazardcontrol";thepreventionandcontrolofmajorhazardshavesubsequentlybecomeapressingissueinallpartsoftheworld.Thismanualonmajorhazardcontrolisaresponsetothepublicdiscussiononhowtopreventmajoraccidents.ItspreparationwasrecommendedbyatripartiteadhocmeetingofspecialconsultantsconvenedbytheInternationalLabourOfficein1985,afterthemajoraccidentinBhopal.Themanualaimsatassistingallcountrieswhichareconsideringmajorhazardcontrol.Thesystemdescribedisapplicabletocountrieswherecertainaspectsofmajorhazardcontrolarealreadyinoperationandtothosewhichintend,forthefirsttime,todevelopaprogrammeforcontrollingmajorhazards.Inparticular,factoryinspectorates,managementsofmajorhazardinstallat...