Presentation on theme: "PORTABLE HANDHELD GRINDER AUTHORISATION TRAINING"— Presentation transcript:
1PORTABLE HANDHELD GRINDER AUTHORISATION TRAINING WELCOME
2INTRODUCTIONPurposeTo instruct personnel on the use and care of portable hand held grinders at Dungeness BObjectivesTo ensure candidates competence in the inspection, use and care of portable hand held grindersFormatSlide showPractical observation (Optional)
3WHY ARE WE HERE? PUWER DNB/LSI/014/S021 Hot Work All guards, equipment handlesand triggers guardsOn power tools“Must not be removed or defeated”PUWERDNB/LSI/014/S021 Hot WorkThe grinder A grinder when supplied with a side handle must have it fitted and it must be used as per designThis handle provides: Stability on start up and use Control during use Vibration control/dissipation Reduces likelihood of inadvertent operation “switch on” Improves safety control of grinder in case of a slipThese units are designed to be used with 2 handles (a trigger handle grip and a side grip handle) and must always be operated as a 2 handed operation (As per manufacturer's instruction).Discs Right disc for the job - the disc selected for the task must be designed for that function. Cutting discs - Designed for cutting – Metal/Stone. Grinding disc - Designed for grinding - Metal/Stone. Any disc that can be used for both tasks must be used as per manufacturer instructions. Never use a disc outside its design criteria and if in doubt clarify with the supplier/manufacturer.General issues Unplug - Always unplug/disconnect any electrical or pneumatic tool when changing the disc/tool. Protect - Wear (2 ply) Kevlar armlets when grinding or other wrist/arm protection PPE that offers the same protection (This is mandatory). Stores code Put it down - Before repositioning yourself, wait until the disc is at a standstill, then place the grinder in safe position. Don't walk around with a live grinder with your finger on the trigger - this can lead to inadvertent operation and increased risk of personal injury. Correct Operation - Ensure the disc is at full speed before starting grinding/cutting. Risk Assessment - At Dungeness B a risk assessment process has been developed and must be completed if the side handle is to be removed. An assessment of the access, lighting conditions and the physical dimensions of the individual being set to work shall be considered. Point of Work Risk Assessment - User to complete POWRA and record the findings. Do not proceed if you have identified issues on your point of work that have not been addressed adequately.All rotating equipment and tools represent a hazard. Be aware of the risks of entanglement, abrasion, flying objects, noise and vibration and ensure the hazards are appropriately controlled.
5Grinders The Rules Side handle must be fitted. Kevlar sleeves must be worn - Stores code A862500Deadman’s handle (No lock on option)Unplug it before you change discs.Put it down - Before repositioning yourself,wait until the disc has stopped, then placethe grinder in safe position.All guards fitted and adjusted .All rotating equipment and tools represent a hazard. Be aware of therisks of entanglement, abrasion, flying objects, noise and vibration andensure the hazards are appropriately controlled.
6RELEVANT LEGISLATION Health and Safety at Work etc. Act 1974 Management of Health of Safety at Work Regulations 1999Provision and Use of Work Equipment Regulations1998Noise at Work Regulations 1989Personal Protective Equipment Regulations1992
7Provision and Use of Work Equipment (PUWER) Regulation 9 TrainingEvery employer shall ensure that all persons who usework equipment have received adequate training for thepurposes of Health & Safety, including training in the methodswhich may be adopted when using the work equipment, anyrisks which may entail and precautions taken.Note - This is not trade training persons on this session MUST be deemed as competent by their employersAS ABOVE – for employees who supervise or manage the trade skill MUST confirm their competency as part of the setting to work processYoung persons MUST be subject to a special RA before allowed to use a portable grinder
8HASAWA 1974Section 7.“It shall be the duty of every employee while at work to take reasonable care for the health and safety of himself and other persons who may be affected by his acts or omissions at work; and to co-operate with his employer in order to enable statutory health and safety requirements to be complied with
9TYPES OF WORK EQUIPMENT USING ABRASIVE WHEELS? These items are not includedWhy
10HAZARDSComing into contact with moving parts of the equipment (including abrasive materials).Wheel/Disc bursting and material being ejected.Abrasive and small particles coming into contact with eyes.Noise from equipment.Vibration from equipment.Kickback where the grinder is thrust away from the work piece.Inhalation of fumes and dusts from materials being worked on.Entanglement with loose items drawing grinder to the operatorElectrocution (PAT TESTING )
11ACCIDENTS Contact Injuries 60%: Eye Injuries 30%: Burst Wheels 10%: Touching wheel, burns, cuts, gashes, possibleAmputations, inadvertent, behavioural.These can be prevented by training in the correct use.Eye Injuries 30%:Caused by lack of eye protection –Must be impact 1grade Goggles or Full face visor Grade 1BThese injuries can be prevented by wearing the correct PPE and deploying the guard/deflector as trainedBurst Wheels 10%:Various Causes, Manufacturing defect ,incorrect use, behavioural,incorrect disc for application of work .
12RIGHT TOOL FOR THE TASKIs use of a portable angle grinder/cutter the right option for task.Has the grinder the following designed safety features?:Soft start option (wherever possible)Deadman’s handle (incorporating auto disconnect lock on facility). Deadman’s handle is mandatory (If it comes with a lock on switch this must never be engaged by the user).Left and right hand operation as standard.If the answer is no to any of the above, consult Industrial Safety before proceeding
13RIGHT TOOL FOR THE TASKIs the size of the unit correct for the task consider weight, ergonomic design, task position, extent of work, work periods, rest periods, restricted working space?Is the guard in place and set to correct position in good condition and secure?
14HOT WORK Grinding /cutting is classed as hot work and will require a hot work certificatein accordance with BEG/SPEC/SHE/CSI/042 Hot Work
15Control Measures Guard Fitted Guarding is provided to contain fragments of the wheel that might fly off if it did burst so preventing injury to the user and others in the workplaceThe guards secondary use is deflection of the debris and sparks away from the operatorOperators suitably trained in the correct handling and mounting of abrasive wheels (This is for portable grinders only)Correct mounting will reduce the risk of bursting.Guard Fitted
16PERSONAL PROTECTIVE EQUIPMENT Mandatory PPE requirementKevlar SleevesWide vision goggles, Offer eye protection and also prevent dust and debris entering users eyes or/and Full face visor as an alternative offers full face protection but is not sealed against dust and debrisimpact rated to BS grade 1 or EN grade BConsideration should be given full face fitted respiratory units or indirect vented goggles to prevent dust ingressHeavy duty gloves (Riggers leather) as a compromise is required that allows user to hold and maneuver the grinder during useRated for mechanical protectionEN 388Abrasion rated 3 or greaterCut rated 4 or greaterTear 2 or greaterPuncture 1 or greater
17PERSONAL PROTECTIVE EQUIPMENT A Kevlar fibre knitted sleeve with or without the cowhide split leather reinforcement on each armHearing defenders due to high noise levelsFire retardent workwear close fitting, no loose cords that may become entangled and draw the angle grinder/cutter into the userLong hair/jewellery - tied back/made secureTask risk assessment may require further protection:-Hood to protect against particles been ejected or bounced back in restricted spacesRespirator when the material or coatings may be harmful to the operatorLeather apron/jacket may offer protect to lower body and chest area (although may not be practical)
18Grinders and use on Non ferous items Abrasive (grinding wheel) composition may be compromised by the heat generated by a "clogged" wheel. The heat is usually carried away from the wheel in the metal it removes, but a clogged wheel becomes a heat generator and the metal adhered to the wheel seals the heat in, therefore you could see a wheel explosion when the material is in contact with the wheel.Examples of material that will clog discsCopperBrassAluminiumPaint coatingsAlways select the right disc for the material to be worked on if in doubt refer to manufacturer
19PERSONAL PROTECTIVE EQUIPMENT Heavy duty rigger glovesare suitable the gloves must be flexible so as not to compromise the feel of the user
20PERSONAL PROTECTIVE EQUIPMENT The disposable dust mask will only give non hazardous dust protection(Use a Non disposable with correct filter attached for hazardous material)
21PERSONAL PROTECTIVE EQUIPMENT Kevlar & Leather sleevesWorn when using grindersmay be worn over orunder overall sleevesHeavy duty gloves
23GUARDS All moving parts of work equipment must be suitably guarded. If adjustable guards are fitted they must always be adjusted prior to use and never removed.Check guard for cracks wear or other damage.Clean inside of guard before installing new wheel.Confirm the guard has been adjusted and locked.
24GUARDS Not covered under the requirements Automatic Blade Guard - Portable Cut-Off SawNot covered underthe requirements
26GUARDS Not covered under these requirements No Guard can be fitted to this type of tool therefore totally reliant on safe method of operation and PPE worn.Not covered under these requirements
27GUARDS – CONSEQUENCES OF NOT USING!!!! Task: Cut reinforcing bars from box-out in concrete wall.Unknown persons previously using the tool removed an angle grinder guard.The operative went to stores to collect an angle grinder, the only one available had its guard removed he took it anyway.Work Equipment: 4” Angle grinder fitted with steel cutting disc.Personnel: Experienced General Labourer trained in abrasive wheels.The operative requested a new pair of gloves from the stores but the expected delivery hadn’t arrived yet.Instead of continuing to use the gloves he already has the operative doesn’t wear gloves whilst carrying out the task.Accident happens, and operative received injuries which resulted in him losing sections of his fingers and becoming disabled for the remainder of his life.
28REMEMBER USER INSPECTIONS Portable Hand Held GrindersInspect grinder housing to ensure no cracking/breakageEnsure that the cable is free from cracking/burning/broken sheath and that the plug is in good conditionMust be 110 volts & Pat TestedDiscs inspected and in good condition (correct disc speed for grinderSecond Handle fittedNo exposed wires or lacerations on the cable
29Practical Test Competent assessor (List of requirement below) The operators training history MUST be confirmed as having covered the useof portable angle grinders/cuttersThis session is an assessment not a training course.Competent assessor (List of requirement below)A selection of discs size/cutting/grinding /material specific/All specified mandatory PPEGrinder (Approved version)
30Practical Test Under observation If a group session ask each person to do separate checks and others to commentRequest operator to complete grinder inspection for obvious defectsOnce inspections are completed ask operator to don required PPERequest operator to adjust the guard on the grinder (Not plugged in)Request operator to change the disc on the grinderRequest operator to place grinder down as per the design (On its back disc upwards)Discuss as group or an individual the session and any learning from itAsk for any further points missed from the session that would improve it
31SUMMARYAbrasive wheels use is covered by the Provision and Use of Work Equipment Regulations 1998You must be trained and deemed competent.This training is not abrasive wheel training.You must wear the correct PPEDo not defeat safety devices (guards, side handle etc)If you are unsure, STOP and ask.