hazards-identification-and-risk-assessment-in-thermal-power-plant-IJERTV3IS040583.pdfVIP专享VIP免费原创优质

HazardsIdentificationandRiskAssessmentinThermalPowerPlantRuchiShrivastava,M.tech(Indu.SafetyEngg.)Dept.ofFiretechnologyandSafetyEngg.,IES-IPSAcademy,Indore(M.P),IndiaPraveenPatel,AssistantprofessorDept.ofFiretechnologyandSafetyEngg.,IES-IPSAcademy,Indore(M.P),IndiaAbstract—Thethermalpowerplantisalargeelectricitygenerationindustry.Itconsistanumberofprocessbymeantogenerateelectricitybyuseoffossilfuel.Italsoconsistseveralmajorequipmentandoperationsinvolveinitsprocess.Thepurposeofhazardidentificationandriskassessmentinthermalpowerplantistoidentifyphysical,chemical,biologicalandenvironmentalhazardsintheplant,analysetheeventsequencesleadingtothosehazardsandcalculatethefrequencyandconsequencesofhazardousevents.ThenrisklevelisassignedtoeachhazardforidentifyingrequiredcorrectiveactiontominimizetheriskoreliminatetheHazard.Keywords—Thermalpowerplant;Riskassessment;Hazardidentification;riskmatrix.I.INTRODUCTIONInpresentscenarioforanyindustrytobesuccessfulitshouldmeetnotonlytheproductionrequirementsbutalsomaintainthesafetystandardsforallconcerned.Thecoalfiredthermalpowerplantsusceptibletoawiderangeofhazardsinitsvariousoperationalareas.Hazardidentificationandriskassessmentissystematicapproachtoprotectthehealthandminimizedangertolife,propertyandenvironment.ThispaperhighlightsreportonHIRAappliedintheC.S.E.B.thermalpowerplant,KorbaEAST(C.G.).Itincludesthemethodologicalstepstoidentifyhazardrelatedtomaterials,operationsandconditions.Assesstherisklevelofthehazardsandapplyorsuggestthepossibleremediesandcorrectiveactionstoreducetherisk.II.METHODOLOGYHazardidentificationandriskassessmentisacombinationsdeterministic,probabilisticandquantitativemethod.Thedeterministicmethodstakeintoconsiderationtheproducts,theequipmentandthequantificationofthevarioustargetssuchaspeople,environmentandequipment.Theprobabilisticmethodsarebasedontheprobabilityorfrequencyofhazardoussituationapparitionsorontheoccurrenceofpotentialaccident.Thequantitativemethodsanalysesvariousdatanumerically.Thefivestepsofhazardidentificationandriskassessmentare:Step1:SystemDescription:Definethesystemandtheresubsystemandoperations.Step2:HazardIdentification-Defininganddescribingahazard,includingitsphysicalcharacteristics,magnitudeandseverity,causativefactors,andlocationsorareasaffected.Step3:RiskAnalysis-AnalyzetheProbability,frequencyorlikelihoodthepotentiallossesassociatedwithahazard.Step4:RiskRating-RiskClassificationScreeningTableisformedandvalueofhazardorcalculatedriskclassgivestherequireactiontobetaken.Step5:ResolvetheRisk–correctiveactionrecommendedpreventing,reducingortransferringtherisks,byshortandlongtermplanning.III.PLANTDISCRIPTIONThermalpowerplantiselectricitygenerationplantwhichconvertsthefossilfuelstoredenergytoelectricalenergybymeansofgeneratingelectricity.Inotherwords,itismerelyachainofEnergyconversionasfollow:ChemicalenergyinthefuelisconvertedtoHeatenergyofsteam.HeatenergyofsteamisconvertedtoMechanicalorrotatingenergyofarotatingwheelcalledTurbine.ThemechanicalenergyofTurbineisconvertedasElectricalEnergyinaGenerator.Asshowninthefig.1thethermalpowerplanthasthefollowingareaoperations:A.CoalHandlingPlantCoaltransportedtotheplantbytheraillineandcarriertrucks.Thiscoalistransferfromtheundergroundbunkertocrusherbyseriesofconveyerbelt.Incoalcrushercoalsizereducedupto¾”afterthatcoaltransfertotheboiler’scoalbunkeror...