Presentation on theme: "Please read this before using presentation"— Presentation transcript:
1Please read this before using presentation This PowerPoint has been produced for public use by Resources Safety staff.The content has been approved for external presentation by the Director Mines Safety and Manager Safety Communications, and must not to be amended without their permission.
3What does hazard mean? Hazard means: any potential or actual threat to the wellbeing of people, machinery or environmentElectrical hazard safety means:taking precautions to identify and control electrical hazards
4Why know about it?Because failing to take the necessary precautions can lead to:injury or deathfire or property damage
5What are the safety priorities? Electrical hazards exist in almost every workplace. Common causes of electrocution are:making contact with overhead wiresundertaking maintenance on live equipmentworking with damaged electrical equipment, such as extension leads, plugs and socketsusing equipment affected by rain or water ingress
6How do you respond to electrical incidents? If you come across a person receiving an electric shock:if possible, disconnect the electrical supply (switch?)assess the situation – never put yourself at risktake precautions to protect yourself and anyone else in the vicinityapply the first aid principles (e.g. DRSABCD)assess the injuries and move the casualty to a safe area if requiredadminister first aid if trainedseek urgent medical attentionD - DangerR - ResponseS – Send for helpA - AirwayB - BreathingC - CPRD - Defibrillation
7Do you want to be a victim? You could be the victim if you:don’t follow proper procedures around electricityuse electrical equipment improperlyuse faulty electrical equipment
8What are the types of injuries? BurnsShocksFallsKeep safeKnow how to control electrical hazards
9What are the levels of effect of current? AC current (mA)Effect on human body1Slight tingling sensation2-9Small shock10-24Muscles contract causing you to freeze25-74Respiratory muscles can become paralysed; pain; exit burns often visible75-300Usually fatal; ventricular fibrillation; entry & exit wounds visible>300Death almost certain; if survive will have badly burnt organs and probably require amputations
10What should you do in an electrical emergency? For low voltage electricity >50 V AC and 110 V DCremove the source of electricity supplycommence CPR if trainedcall the emergency number on siteFor high voltage electricity >1000 Vcall the emergency number for your sitedon’t go near the casualtydon’t touch the casualty or try to free them with anything
11Should you report electrical incidents? Electricity is invisible – this in itself makes it dangerousIt has great potential to seriously injure or killThe company has a duty of care to its employees and contractorsEveryone is exposed to electrical hazards, not just electriciansReport all electrical shocks and near missesAll employees can be exposed to electricalHazards. they should receive electrical hazardtraining at the commencement of theiremployment and REGULAR REFRESHER TRAINING.
12Can you protect yourself from electricity? Don’t wear metal objectsTurn power offWear appropriate clothingDon’t touch live partsDon’t install or repair electrical equipmentUse qualified personnelClean and dry leads and plugs before useUse PPE
13What are other safety measures? Heed warning signsUse the right equipmentStudy the operation manualTake care of extension leadsUse only approved extension lampsDon’t pull on leadsUse residual current devices – RCDsUse the proper fuses and circuit breakers
14Regular safety inspections are a part of YOUR job...Electrical equipment should be checked each time before use for defectsIf not tagged or the tag is out of date then report it and place it out of service
15Should you be aware of powerlines? Do you know if there are overhead powerlines on your site?Do you know where they are located?Do you know what the safe work clearance is?Strict regulations are laid down to cover any work that may have to be performed close to overhead powerlines
16What is a powerline corridor? MSI Regulation 5.28 defines a powerline corridor as the area under any overhead powerline that has not been properly isolated, and 10 metres either side of the powerline.It is essential that these areas are respected. They are there for the safety of everyoneDo not store equipment, machinery, buildings or structures in powerline corridorsDo not construct, fabricate or maintain structures, buildings, machinery or equipment in powerline corridorsLOOK UP AND LIVE
17Can a powerline be approached safely? Up to and including to 33 kV2.3 m when passing underneath and 3 m when passing to the sideAbove 33 kV4 m when passing underneath and 6 m when passing to the side
18Who can access substations? Only trained and authorised personnel may enter and work inside a substationTo enter a substation you must complete the substation entry trainingAccess is restricted for any cabinet with exposed energized partsAll electrical work must to be recorded andentered into the Electrical Mines Record Book,and the Electrical Supervisor informed
19What are electric shock hazards? Arc welding can and has killed people in high risk environmentsEveryone involved needs to better understand the hazards, adopt sound practice and use appropriate safety devicesStudy and adhere to the Code of Practice: WTIA Tech Note 7-04Use safety devices such as manual trigger switches and voltage reducing devices (VRDs)Under adverse conditions, strive to improve control measures (e.g. presence of moisture as sweat or rain)
20A welding incident…Assistant hands welder a metal object. Resultant current is 35 mAI = V/R = 67/1900 = 35 mAResult = Assistant survived but welder died
21Do you have permission to dig? Be aware of the potential hazard from buried electrical cables for the following activities:excavationdrillingtrenchinglevellingdiggingdriving of stakes or pegsDo not commence excavation work near buried cables unless a permit has been issued by an authorised personDo you know what precautionary measures need to be taken?
23Is this a problem?This absolute shocker is a shocker in the literal sense.If you look carefully, you will notice that the power lead plug-top is not designed and intended for use within an Australian socket outlet.This should have warned the user that the appliance may not have been designed for use within the Australian 240 Volt system, but rather the 110 Volt system in so many other countries. But it seems that some people just wont take the hint.What we see here is a dangerously novel variation on the age-old stupidity of trying to force a square peg into a round hole.If it won’t fit – don’t use it!
24The key messages are…The risk of electric shock from correctly installed and maintained power sources is negligible, provided that sensible precautions are taken by the operator and correct work procedures are followedEnsure that the right person is carrying out electrical work – licensed versus competentElectricity is essential but, improperly used, it can be DEADLY!To STAY ALIVE, you have to STAY ALERT