nrm ride quality assessment
Post on 15-Apr-2017
56 Views
Preview:
TRANSCRIPT
RideQualityAssessment
WhoIamRickBellew,VicePresidentofCorporateDevelopmentWorkedforBNSFRailwayfor10years,startingasatracklaborer,workedmywaythroughmultiplepositionsendingwithRoadmasteronthreedifferentterritoriesthroughoutthecountry.FRATrackSafetyInspectorintheStateofNewMexico.LefttheFRAtorejointheprivatesectorwithHerzogandTransitAmericaServices◦ ContractOperatorforNewMexicoRailRunnerExpress◦ ContractOperatorforCaltrain
BeeninvolvedwithTrackMaintenance,Repair,Inspection,MechanicalEquipment,Operations,Agencies,andConstructionallofmycareer.SpentsignificantamountoftimewiththeStateofGoodRepairProgramforCaltrain(CTAMS),ContinuousImprovementprojectsforHerzogandTransitAmericaServicestoincludeproductprocurementapprovals,managementdevelopmentprograms,andmultipleCFRPlans.
Whoweare?HeadquarteredinOgden,Utah
Foundedin1975,incorporatedin1993
SpecializeinTieCollection,Rehabilitation,andSales◦ Pickupthetieswithgrappletrucks,SPSorMPMmachines.◦ Sort,grade,process,andrehabrailroadties.
PlantsinClinton,IA,GrandIsland,NE,andTucson,AZ.
ProvideTrackMaintenance,Repair,Inspection,Consulting,GrappleTrucks,Vacuumtrucks,VegetationCleanup,HomelessEncampmentCleanup,Part213.7Training.
AreyouallfamiliarwithRideQuality?
Correlationofavehiclesvibrationtothevehicle/trackinteraction(V/TI)forcesfordetectingissuesonthetrackorvehicle.
Traditionalgeometryinspectionsareperformedinfrequentlyduetocost.Ridequalitydatacanbegatheredatasignificantlylowercostpoint,muchmorefrequentlyandgreaterareascanbecovered.
Meanttoaugmenttraditionaltrackinspectiontechnologieswithday-to-dayridequalitydatawhichprovidesmoreuptodatesituationalawarenessoftheirtrackandtheirvehiclesandmayimproveoveralloperationalsafety.
RideQuality
Thecapabilityoftherailroadvehiclesuspensiontomaintainthemotionwithintherangeofhumancomfortandorwithintherangenecessarytoensurethatthereisnodamagetothecargoitcarries.
Dependson◦ Displacement,Acceleration,rateofchangeofaccelerationandotherfactorslikenoise,dust,humidity,andtemperature.
SperlingsRideIndex– OlderVersion◦ UsedbyIndianRailways◦ RideComfort– Vehiclebeingassessedaccordingtotheeffectofthemechanicalvibrationsonthehumanbody.◦ RideQuality– Vehicleitselfisbeingassessed
Aisthepeakaccelerationincm/s2,fisthefrequencyinHzandFthefrequencydependentweightingfactorsthatexpresseshumanvibrationsensitivity.Fisdifferentforverticalandhorizontalvibrationcomponents.
ISO◦ InternationalStandardsOrganization◦ Influenceofvibrationonthehumanbodyisexpressedbythefatiguetime.◦ ThreeLevelsoffatigueTime
◦ DecreasedProficiency,◦ ExposureLimits,◦ ReducedComfortBoundary
SperlingRideEvaluationScales
ComfortGuidelines– ISO2631Humanreactiontovibration◦ Functionofamplitudeandfrequencyofaccelerationappliedtothebody.◦ Thedirection(HorizontalandVertical)andcharacterofthemotion(Linearorrotation).
Frequencyrangeof1-80HzassetbyISO
Limitscoverhumansensitivitytoverticalandlateralvibrationtoperiodicvibrationexposuretimerangingfrom1minuteto24hours.
Uses1/3octavebandsat10Hz
WhatisrMetrixFrainspectorsareusingthesystemineachregion.(Iusedanearlyversion).
RideQualitySystem◦ Runsofflaptop◦ UsesAccelerometer– Tri-axialaccelerometer
◦ MEMSAccelerometer– AnalogdevicewithaniSensor.Measuresacceleration,tilt,shock,andvibrationinperformancedriveapplications.
◦ UsesaFreeScaleChipinsidewhichallowscommunicationwithlaptop.◦ USBMicroController◦ TemperatureCompensation◦ Calibratedannually
◦ GPSlocationprovidedbydeviceandGISmappingdataprovidedbytheFRA.
rMetrixRealtime,geo-spatiallycorrelatedridequalitydata
Software◦ Comparesthelongitudinal,lateral,andverticalaccelerationsignalstrengthagainstapre-definedsafetythresholdtodetectabnormalconditions(exceptions)– 49CFRPart213.333.
ExcessiveVerticalAcceleration◦ Profileorcrosslevelgeometrydeviations
ExcessiveLateralAcceleration◦ Alinementorgagedeviations
Abnormalvibrationdatacouldpointtoproblemswithwornwheelsortheprimaryorsecondarysuspensioncomponentssuchasspringsordampers.
Values49CFRPart213.333◦ CarbodyLateralPeaktoPeak– Highestpointofdeviationtolowestpointwithin1000mls,or1second.◦ .500gforce
◦ CarbodyVerticalPeaktoPeak– Highestpointofdeviationtolowestpointwithin1000mls,or1second.◦ .600gforce
Iftheinspectionreturnsnoresults,wecantightenthethresholds.Iftheinspectionreturnsmorethananticipated,wecanloosenthethresholds.
Reports•ExceptionListSummary
•ExceptionListDetailed
•CSVExportReport
•SteadyStateAccelerationReport
•WindowLimitsReport
•RideComfortReport(ISO2631)
•RideHealthReport(ISO2631)
•SperlingRideIndex
Whydothis?•Safety,ridecomfortandeconomyarethemajorfactorsbehindanysuccessfultransportationbusiness.
•HelptomaintainandplanforStateofGoodRepairFunds.
•DerailmentPrevention– Addedinspectionmeasurewhichcomplimentsinternalrailflaw,geometry,andvisualinspection.
AdditionalServicesThird-Partycomplianceinternalauditofyourcontractedmaintenanceofwaycontractor.◦ Thisserviceincludes:
◦ Areviewofatleastone-monthstrackinspectionrecords.◦ Railflawdefectrepairreview.213.113
◦ Railjointinspectionandweldingcompliance.213.121
◦ Continuousweldedrailplancontentsandfieldcompliance.213.119
◦ TrackInspectioncompliance.213.233◦ Switchinspectioncompliance.213.235
◦ Inspectionofrail(Internal)compliance.213.237
◦ Designationofinspectorscompliance.213.7a,b,candd◦ On-TrackSafetycompliance.214
◦ RoadwayMaintenanceMachineCompliance214
NRMprovidedinspectortoconductafullPart213inspectionoftheentiretrackstructure.(Aninternalinspection BEFORE theFRAinspection)◦ Thiscouldtakeaweek,orfourweeksdependingonmultiplevariableswhichshouldbediscussedpriortoschedulingtheinspection.
StateofGoodRepairAssessment◦ NRMcanprovideaninspectorwhowillconductafullorsampleSOGRassessment.SOGRassessmentsareidealwhenanagencywantstokeeptrackofthe
conditionofthetrackstructurepriorto,during,andafterthetermofacontracthasendedorisendinginthenearfuture.Thisallowstheagencytomakeadeterminationastotheconditionofthetrackbefore,andafterthetermofthecontract.NRMcanalsomakerecommendationsaftertheinspectioninordertohelpmakedecisionstoextendthelifeofthephysicalplant.Ratingsaretypicallybetween1and5,andcolorcoded.Abaselineinspectionshouldbeperformed,andperiodicinspectionstoassessiftheconditionhasimproved,ordegraded.
CapitalTieMaintenanceProgram◦ NRMutilizesstateoftheartsystemswhichallowourinspectorstogradeeachandeveryrailroadtiebetweenMPlocations.Theconditionisloggedintoa
ruggedizedpalmtoppilot.TheinspectiondataisuploadedintoasoftwareprogramprovidedbyZeta-Tech.Fromthissoftwaresystem,NRMisabletomakearecommendationontiereplacementusinganumberofvariablessuchas:◦ Replaceevery2,3,4,5tieclusters
◦ Buildacapitaltiereplacementprogramtobringclassuptoahigherclassforspeedincreases.
◦ Buildacapitaltiereplacementprogramforminormaintenance.
Whatcanwedoforyou?
RichardBellewVPCorporateDevelopment
NevadaRailroadMaterialsInc.www.nevadarail.com
rbellew@nevadarail.comhttps://www.linkedin.com/in/richardbellew
917CountryHillsDrive#3SouthOgden,UT.84403
801-391-1201
top related