917 海外项目安全管理动火作业英文版 Hot work control.docx
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917 海外项目安全管理动火作业英文版 Hot work control.docx
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917海外项目安全管理动火作业英文版Hotworkcontrol
HotWorkControl
1.0PURPOSE
Thepurposeofthisstandardistodefineminimumrequirementsforprecautionstobetakenduringhotwork,topreventhazardsassociatedwithhotworkactivity.
2.0SCOPE
ThisstandardappliestoallhotworkactivitiescarriedoutwithinSABICandit’sAffiliatesfacilities.
3.0DEFINITIONS
3.1AuthorizedArea:
Anareaspecificallydesignedtoaccommodatehotworkoperations(i.e.,weldingshop,grindingshop,etc.)wherehotworkpermitisnotrequired.
3.2HotWork:
Workactivitycapableofsupplyingignitionenergyforflammablemixtures.Examplesinclude:
1)theprocessofjoiningtogethertwopiecesofmetal(welding,brazing),2)thebreakingapartofmetalintotwopieces(cutting)bymeansofextremeheat,3)metalgrindingorotheroperationwhichproducesheat,flame,and/orsparksthatcouldprovideapossiblesourceofignition.Otherexamplesofhotworkinclude:
useofnon-electricallyratedtoolsinanareawhichhasbeenclassifiedasahazardousarea,operationofinternalcombustionenginesinelectricallyclassifiedareas,andsandblasting.
3.3Shall:
Signifiesmandatoryrequirements.
3.4Should:
Signifiesrecommended/optionalrequirements.
4.0REQUIREMENTS
SABICanditsAffiliatescarryinghotworkshalldevelopproceduresandprogramsthatmeetsthefollowingrequirements:
SABICIndustrialSecurityshallbeconsultedforanyclarificationtothisstandard.TheclarificationgivenbySABICIndustrialSecurityshallbecompliedwithandconsideredfinal.
4.1AppropriateWorkpermitshallbeobtainedforhotworkthatistobeperformedoutsideanauthorizedarea.Allrequirementsofthepermitshallbecompliedwithpriortocarryingouthotwork.
4.2Onlyauthorizedpersonsshallbeallowedtouseflameorspark-producingequipments.
4.3Allareaswherehotworkistobedoneshallbeinspectedtoidentifyandcorrectpotentialfirehazards.
4.4Gastestingshallbeconductedforallhotworkoutsidetheauthorizedarea.
4.5Appropriatefireextinguishingequipmentsuchaswaterhose,fireresistantblanketsetc.shallbereadilyavailableforusewheneverandwhereverhotworkisperformed.
4.6Iftheobjecttobeweldedorcutcannotbereadilymoved,allmoveablefirehazardsinthevicinityshallbemovedatleast15metersfromtheworksite.Combustiblesandflammablesthatcannotberelocatedshallbeisolatedfromignitionsourcesbyflame-proofedcoversorotherwiseshieldedwithmetalorfire-resistantguardsorcurtains.
4.7FollowingshallbeconsideredforhotworkinconfinedSpaces
4.7.1Adequateventilationshallberequiredatalltimeswhenperforminghotworkinaconfinedspace.VentilationshallfollowtherequirementsofSABICSafetyStandardonConfinedspaceentry-SF132.
4.7.2Gascylindersusedforhotworkinaconfinedspaceshallbekeptoutsidetheconfinedspace.
4.7.3Gas-burningorweldingtorchesshallnotbeleftinsidetheconfinedspace,unattended.Ifremovalofthetorchesisimpractical,thehoseattheregulatorshallbedisconnected.Thegascylindersshallberemovedfromtheoperatingareaattheendofanyworkperiod.
4.8Nohotworkshallbeperformedonuseddrums,barrels,tanks,orothercontainersuntilitisestablishedthatnoflammablematerialsorothermaterialsarepresentwhich,whensubjecttoheat,mightproduceflammableortoxicvapors.
Containersshallbeadequatelyventedtotheatmospheretopreventexplosion.Whencontainersdocontainflammableortoxicmaterials,thefollowingprecautionsshallbetaken:
4.8.1Pipelinestothecontainersshallbedisconnectedorblankedoff.
4.8.2Thecontainershallbepurgedwithaninertgas.
4.8.3Afterpurgingiscompleted,theatmosphereinsidethecontainershallbesampledtoensureitissafeforhotwork.
4.8.4Iftheaboveprecautionscannotbetaken,thecontainershallbecompletelyfilledwithwater,beforethehotworkisperformed.
4.8.5Firewatchstandbywithmeansofcommunicationshallbeprovidedwheneverhotworkisbeingperformed1)inOperatingplantotherthaninanauthorizedarea,2)ifthereisapossibilityofotherthanaminorfire,or3)ifanyofthefollowingconditionsexist:
▪Therearelargeamountsofcombustiblematerialpresent,eitherinbuildingcontentsorconstruction.
▪Therearewall,floor,orceilingopeningswithin11meters(35feet)radius,wherecombustiblematerialsmayigniteinadjacentareas.
▪Combustiblematerialsareadjacenttotheoppositesideofmetalpartitionsandmayignitebyconductionorthermalradiation.
4.8.6Firewatchshallhavetheresponsibilityandauthoritytoimmediatelyshutdownthehotworkifhazardousconditionsarise.Hisprimaryjobshallbepreventionoffire.Heshouldbeconstantlyonthewatchforchangingconditions,flammableandcombustibles,sparkcontainmentandforanyabnormalevent.Heshallbefamiliarwiththeareaandpotentialhazardsandknowhowtoobtainassistanceinanemergency.WorkPermitissuershallspecifyifafirewatchisneeded.Normallyafirewatchshallberequiredforallhotworkinprocessingareas.
4.8.7Incertainweldingoperationswherethereisnoknownriskofanyflammablevaporsorliquid,thewelder’shelpermaybedesignatedasthefirewatchbytheissueroftheworkpermit.
4.8.8Thefirewatchshallhavefirefightingequipmentappropriatetothepotentialhazard.Heshallbetrainedinitsproperuseandlimitations.Extinguishersaretobedismountedandfirehosesshallbeconnectedtothehydrant.
4.8.9Afirewatchshallbemaintainedduringlunch,allbreaks,andforatleastone-halfhouraftercompletionofthehotworkoperationwherethereisthepotentialforsmolderingfires.
4.8.10Ifafire(orunsafesituation)isnoted,theFirewatchshallimmediatelystopthehotwork,callforhelpandinstituteemergencyresponseextinguishments.
4.9Adequateventilation(natural,mechanical,orrespirator)shallbeprovidedforallwelding,cutting,brazingandrelatedoperationstoensurepermissibleexposurelevelsarenotexceeded.
4.10
Hazardsassociatedwiththeelementscontainedintheconsumables,basemetals,coating,oratmospheresofweldingorcuttingoperationsshallbeknowntothewelder.Localexhaustventilationandpersonalrespiratoryprotectiveequipmentasneededshallbeprovided.
4.11Weldersshallonlycutorweldoncleanmetal.Corrodedandpaintedsurfacesormetalcoveredwithanycoatingsshallbecleanedpriortowelding.
4.12Whenwelding,heatingorburninggalvanizedorcadmiumplatedmetal,localexhaustventilationoranairlinerespiratorshallbeprovided.
4.13Weldingcableandotherequipmentshallbeplacedsothatitisclearofpassageway,ladders,andstairways.
4.14Helmetsandhandshieldswithfilterlenses(seeAttachment1)andcoverplatesshallbeusedbywelders,welder’shelpers,andnearbypersonnelwhenviewingthearc.Safetyglasseswithsideshields,goggles,orotherapprovedeyeprotectionshallalsobewornduringarcweldingorcuttingoperations.
4.15Gogglesorotherapprovedeyeprotectionwithfilterlenses(RefertoAttachment1)andsideshieldsshallbewornduringalloxy-fuelgasweldingandcuttingoperations.Helpersshallwearequivalenteyeprotection.
4.16Allouterclothingshouldbefreefromoilorgrease.
4.17Theweldershouldusefireretardantmaterialclothing.Syntheticclothingshallnotbewornbythewelder.
4.18Helmetsandshieldsshallbeusedtoprotecttheface,forehead,neckandearsfromdirectradiantenergyfromthearcandfromweldspatter.Helmetandshieldbodiesmustbemadeofmaterialthatisthermallyandelectricallyinsulating,non-combustibleorself-extinguishing,andopaquetovisible,ultraviolet,andinfraredradiation.
4.19Weldersshallkeepthesleevesandcollarsbuttoned.Pocketsshouldbeemptiedofflammableorreadilycombustiblematerial.Pantsshouldnothavecuffsandshouldnotbeturnedupontheoutside.Pantsshalloverlapshoetopstopreventspatterfromgettingintoshoes.
4.20Allweldersandcuttersshallwearprotectiveflameresistantgauntletgloves..
4.21Fireresistantscreensorcurtainsshallbeusedaroundtheweldingareatoprotectpassersbyfromflyingsparksanddirectviewofthearc.
4.22Whenweldingorcuttingwithcoveredelectrodesusingalternatingcurrent(AC)single-phasetransformer-rectifierarcweldingmachinesandunderelectricallyhazardousconditions,theweldersshallusedryglovesandclothing,non-conductivefootwear,andavoidaccidentalcontactwithliveelectricalparts.
4.23OnlyqualifiedWeldersshallbeemployed.
4.24Oxygencylinders,cylindervalves,coupling,regulators,hosesandapparatusshallbekeptfreefromoilyorgreasysubstances.Oxygencylindersorapparatusshallnotbehandledwithoilyhandsorgloves.
4.25Lubricationofanycylindersvalves,andfittingswithoilorgreaseshallnotbedonebecauseitisunnecessaryandhighlydangerous.
4.26Oxygenshallbeusedonlyforthepurposeintended.Oxygenshallnotbeusedasasubstituteforcompressedair.Oxygenshallnotbeusedinpneumatictools,inoilpreheatingburners,tostartinternalcombustionengines,toblowoutpipelines,todustclothingorwork,ortocreatepressureforventilation.
4.27Oxygenshallnotbeusedtostrikeanoilysurface,cleangreasyclothing,oraddedtofueloilorotherstoragetanks.
4.28Oxygencylinders,equipment,pipelines,orapparatusshallnotbeusedinterchangeablywithanyothergas.Oxygenregulatorsshouldbetagged,andusedinoxygenserviceonly.
4.29Torchconnectionsshallbecheckedforgastightnessafterassemblyandbeforelighting.Soapywaterorequivalentshallbeusedtocheckleakages.Openflame
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