Practical Machinery Safeguarding
Transcript of Practical Machinery Safeguarding
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Practical Machinery Practical Machinery SafeguardingSafeguarding
Nigel DavyNigel Davy
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Machinery GuardingMachinery GuardingRecognise machinery hazardsRecognise machinery hazardsBe aware of common Be aware of common machinery guarding issuesmachinery guarding issuesDo this systematicallyDo this systematicallyIdentify when improvements Identify when improvements are requiredare requiredSelect the appropriate safety Select the appropriate safety devicesdevicesBe aware of the standardsBe aware of the standardsImplement the correct Implement the correct management system for the management system for the equipment.equipment.
Types of machineTypes of machineHow the machines are How the machines are usedusedWhat to look forWhat to look forMachinery hazardsMachinery hazardsPUWER & EHSRPUWER & EHSR
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Machinery GuardingMachinery GuardingRecognise machinery hazardsRecognise machinery hazardsBe aware of common Be aware of common machinery guarding issuesmachinery guarding issuesDo this systematicallyDo this systematicallyIdentify when improvements Identify when improvements are requiredare requiredSelect the appropriate safety Select the appropriate safety devicesdevicesBe aware of the standardsBe aware of the standardsImplement the correct Implement the correct management system for the management system for the equipment.equipment.
What can go wrongWhat can go wrongGuarding arrangementsGuarding arrangementsMaintenanceMaintenanceEffective interlock guardsEffective interlock guardsEffective fixed guardsEffective fixed guards
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Machinery GuardingMachinery GuardingRecognise machinery hazardsRecognise machinery hazardsBe aware of common Be aware of common machinery guarding issuesmachinery guarding issuesDo this systematicallyDo this systematicallyIdentify when improvements Identify when improvements are requiredare requiredSelect the appropriate safety Select the appropriate safety devicesdevicesBe aware of the standardsBe aware of the standardsImplement the correct Implement the correct management system for the management system for the equipment.equipment.
Overview of legal Overview of legal requirementsrequirementsSupply Regs vs. PUWERSupply Regs vs. PUWERRisk assessmentRisk assessmentBS EN StandardsBS EN StandardsTaking into useTaking into use
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Machinery GuardingMachinery GuardingRecognise machinery hazardsRecognise machinery hazardsBe aware of common Be aware of common machinery guarding issuesmachinery guarding issuesDo this systematicallyDo this systematicallyIdentify when improvements Identify when improvements are requiredare requiredSelect the appropriate safety Select the appropriate safety devicesdevicesBe aware of the standardsBe aware of the standardsImplement the correct Implement the correct management system for the management system for the equipment.equipment.
Machinery guardingMachinery guardingWhat to look forWhat to look forObservationObservation
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Machinery GuardingMachinery GuardingRecognise machinery hazardsRecognise machinery hazardsBe aware of common Be aware of common machinery guarding issuesmachinery guarding issuesDo this systematicallyDo this systematicallyIdentify when improvements Identify when improvements are requiredare requiredSelect the appropriate safety Select the appropriate safety devicesdevicesBe aware of the standardsBe aware of the standardsImplement the correct Implement the correct management system for the management system for the equipment.equipment.
Risk reductionRisk reductionApply appropriate Apply appropriate safeguardssafeguardsMake user aware of Make user aware of residual risksresidual risksDesignDesignSafety distances Safety distances Minimum gapsMinimum gapsGuard typesGuard typesGuarding systemsGuarding systemsPotential guard failuresPotential guard failuresCategories of safety Categories of safety control systemscontrol systemsControls & isolationControls & isolation
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Machinery GuardingMachinery GuardingRecognise machinery hazardsRecognise machinery hazardsBe aware of common Be aware of common machinery guarding issuesmachinery guarding issuesDo this systematicallyDo this systematicallyIdentify when improvements Identify when improvements are requiredare requiredSelect the appropriate safety Select the appropriate safety devicesdevicesBe aware of the standardsBe aware of the standardsImplement the correct Implement the correct management system for the management system for the equipment.equipment.
Machinery Directive EHSRMachinery Directive EHSRPUWER requirementsPUWER requirementsLOLER, PSR, EaW, NoiseLOLER, PSR, EaW, NoiseStandardsStandards
AABBCC
Specific standardsSpecific standardsAssessmentAssessmentDesignDesignReach distancesReach distancesControl systemsControl systems
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Machinery GuardingMachinery GuardingRecognise machinery hazardsRecognise machinery hazardsBe aware of common Be aware of common machinery guarding issuesmachinery guarding issuesDo this systematicallyDo this systematicallyIdentify when improvements Identify when improvements are requiredare requiredSelect the appropriate safety Select the appropriate safety devicesdevicesBe aware of the standardsBe aware of the standardsImplement the correct Implement the correct management system for the management system for the equipment.equipment.
Statutory inspectionStatutory inspectionElectrical testingElectrical testingSSoWSSoW
Normal productionNormal productionOther regular tasksOther regular tasksAbnormal circumstancesAbnormal circumstances
Isolation & lock offIsolation & lock offTrainingTrainingPre start checksPre start checksInspections & auditsInspections & auditsMaintenanceMaintenance
TasksTasksSafety devicesSafety devices
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Conveyor
Tooling
Motor & drive
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Conveyor
Tooling
Motor & drive
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Conveyor
Tooling
Motor & drive
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Conveyor
Tooling
Motor & drive
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Infeedconveyor nip
Infeed reach in
Reach in & down
Access from underneath
Outfeed conveyor nip
End access
Direct sideaccess
Outfeed reach in
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Conveyor
Tooling
Motor & drive
What do we need from this guard?
What is it protecting?
What do we need from this guard?
What is it protecting?
Need for time delay?
How often will
it be opened?
What type of interlock
will be needed?
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Infeedconveyor nip
Infeed reach in
Reach in & down
Access from underneath
Outfeed conveyor nip
End access
Direct sideaccess
Outfeed reach in
How do I start & stop it?
Emergency stop
& isolator!
Where do the controls need to be?
Who needs access to the
controls?
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PUWER PUWER A few sneaky bitsA few sneaky bits
Specific RisksSpecific RisksThe way equipment is used, The way equipment is used,
repaired, adjusted etc.repaired, adjusted etc.
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PUWERPUWERA few more sneaky bitsA few more sneaky bits
Information and instructionsInformation and instructionsAdequate health and safety informationAdequate health and safety informationWritten instructions if appropriateWritten instructions if appropriate
Same for supervisors & managersSame for supervisors & managersInformation & instruction to include:Information & instruction to include:--
Conditions in which & methods by which it may be Conditions in which & methods by which it may be usedusedForeseeable abnormal situations and actions requiredForeseeable abnormal situations and actions requiredConclusions drawn from experience with the Conclusions drawn from experience with the equipmentequipment
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PUWERPUWEROne more sneaky bitOne more sneaky bit
Regulation 22 Regulation 22 –– Maintenance operationsMaintenance operationsMaintenance operations involving a risk to health Maintenance operations involving a risk to health or safety to be carried out while equipment is or safety to be carried out while equipment is shut down.shut down.If not:If not:--
Carried out without exposing the person to riskCarried out without exposing the person to riskOROR appropriate measures to be taken to protect the appropriate measures to be taken to protect the personperson
THIS IS AN IMPORTANT REGULATION!THIS IS AN IMPORTANT REGULATION!
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Machinery Guarding Machinery Guarding
What can go wrong?What can go wrong?
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Machinery GuardsMachinery Guards
A guard is not a guard A guard is not a guard when when ………………………………………………………………………………
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A guard is not a guard when A guard is not a guard when ……....
It is not fittedIt is not fittedIt has been removedIt has been removedIt is too looseIt is too looseIt is not fixed properlyIt is not fixed properlyIf fixed it can be removed If fixed it can be removed by handby handIt is brokenIt is brokenIt has been defeatedIt has been defeatedIt has been modified It has been modified incorrectlyincorrectly
It is not properly It is not properly maintainedmaintainedIt is removed and the It is removed and the machine is runningmachine is runningThe interlock is defectiveThe interlock is defectiveThe interlock is The interlock is incorrectly adjustedincorrectly adjustedDoes not prevent contactDoes not prevent contactNot the correct dimensionNot the correct dimensionIt has been overriddenIt has been overridden
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MaintenanceMaintenance
Is it really guarded?Is it really guarded?
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Flowrap MachineFlowrap Machine
Is the guard effective?Is the guard effective?
Could you touch the sealing jaws?Could you touch the sealing jaws?
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Machinery Guarding Issues Machinery Guarding Issues
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ItIt’’s all right Nigel!s all right Nigel!ItIt’’s Interlocked!s Interlocked!
Is the interlock effective?Is the interlock effective?
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Fixed GuardsFixed Guards
Is the guard effective?Is the guard effective?
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A few general issuesA few general issues
BlockagesBlockages
Reach InReach In
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ConveyorsConveyors
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Hazard/Danger ZoneHazard/Danger Zone
Any space within or around machinery in Any space within or around machinery in which a person can be exposed to a which a person can be exposed to a hazard.hazard.
PUWER Reg.11 PUWER Reg.11 –– Danger ZoneDanger Zone““Any zone in or around machinery in which Any zone in or around machinery in which a person is exposed to risk from contact a person is exposed to risk from contact with a dangerous part of machinery with a dangerous part of machinery or a or a
rotating stock barrotating stock bar””
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Intended use of machineIntended use of machine
Use of a machine in accordance with the Use of a machine in accordance with the information provided by the manufacturer information provided by the manufacturer
in the instructions for usein the instructions for use
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Routine production operationRoutine production operation
&&
All All foreseeable abnormal foreseeable abnormal situationssituations
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Reasonably foreseeable misuseReasonably foreseeable misuseUse of a machine in a way not intended by the designer, but whicUse of a machine in a way not intended by the designer, but which may h may result from result from readily predictablereadily predictable human behaviour.human behaviour.
? Standing on a machine to reach in?? Standing on a machine to reach in?
? Use of an interlocked door to stop a machine rather than walk ? Use of an interlocked door to stop a machine rather than walk to a to a switch panel?switch panel?
? Failure to isolate because isolation facilities are not readil? Failure to isolate because isolation facilities are not readily available?y available?
? Short cuts during cleaning and clearing blockages?? Short cuts during cleaning and clearing blockages?
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Hazard IdentificationHazard Identification
Need to identify every hazard, this is a critical first step.Need to identify every hazard, this is a critical first step.If you have not identified the hazards you cannot control If you have not identified the hazards you cannot control them.them.Must include all types of use, including:Must include all types of use, including:--
Normal operationNormal operation
CleaningCleaningAdjustingAdjustingMaintaining Maintaining Clearing blockagesClearing blockagesSetting up Setting up Dismantling & reassemblyDismantling & reassembly
We often forget these!
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GuardingGuarding
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Machinery GuardingMachinery Guarding
Practical TipsPractical Tips
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Look underneathLook underneath
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Look at the sidesLook at the sides
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Look at the topLook at the top
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Look at the Look at the infeed and outfeedinfeed and outfeed
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Look at the motors & drivesLook at the motors & drives
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Look at the controlsLook at the controls
Which buttons do I press Which buttons do I press to to
start and stop it?start and stop it?
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Look at the Look at the Emergency Stop SwitchesEmergency Stop Switches
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Look at the isolation facilitiesLook at the isolation facilities
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Look at the conveyorsLook at the conveyors
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Look between the machinesLook between the machines
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Pop Out RollersPop Out Rollers
Do they Do they ““pop outpop out””??
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Look beside the machinesLook beside the machines
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Look at the safety devicesLook at the safety devices
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Look at the access pointsLook at the access points
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Look at the way Look at the way we use the machinewe use the machine
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Look at the abnormal Look at the abnormal uses of the machineuses of the machine
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Abnormal CircumstancesAbnormal Circumstances
•• CleaningCleaning•• AdjustingAdjusting•• Clearing blockagesClearing blockages•• BreakdownsBreakdowns•• MaintenanceMaintenance•• ObservationsObservations
•• Opening or removing guardsOpening or removing guards
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Loading and AdjustingLoading and Adjusting
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Cleaning or Clearing BlockagesCleaning or Clearing Blockages
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Maintenance ActivitiesMaintenance Activities
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ObservingObserving
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Practical Machinery GuardingPractical Machinery Guarding
A few tips!A few tips!