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WELCOME
PORTABLE HANDHELD GRINDERAUTHORISATION TRAINING
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INTRODUCTION
Purpose
To instruct personnel on the use and care ofportable hand held grinders at Dungeness B
Objectives
To ensure candidates competence in theinspection, use and care of portable hand heldgrinders
Format
Slide show
Practical observation (Optional)
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All guards, equipment handles
and triggers guardsOn power tools
Must not be removed or defeated
PUWER
DNB/LSI/014/S021Hot Work
WHY ARE WE HERE?
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Recent Events
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Grinders
Side handle must be fitted. Kevlar sleeves must be worn - Stores code A862500Deadmans 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 .
The Rules
All rotating equipment and tools represent a hazard. Be aware of therisks of entanglement, abrasion, flying objects, noise and vibration and
ensure the hazards are appropriately controlled.
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Health and Safety at Work etc. Act 1974
Management of Health of Safety at Work Regulations 1999
Provision and Use of Work Equipment Regulations1998
Noise at Work Regulations 1989
Personal Protective Equipment Regulations1992
RELEVANT
LEGISLATION
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Provision and Use of Work
Equipment (PUWER)Regulation 9 Training
Every employer shall ensure that all persons who use
work equipment have received adequate training for the
purposes of Health & Safety, including training in the methodswhich may be adopted when using the work equipment, any
risks which may entail and precautions taken.
Note - This is not trade training persons on this session MUST be deemed
as competent by their employers
AS ABOVE for employees who supervise or manage the trade skillMUST confirm their competency as part of the setting to work process
Young persons MUST be subject to a special RA before allowed to use a
portable grinder
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Section 7.
It shall be the duty of every employee
while at work to take reasonable care forthe health and safety of himself and otherpersons who may be affected by his actsor omissions at work; and to co-operate
with his employer in order to enablestatutory health and safety requirements tobe complied with
HASAWA 1974
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TYPES OF WORK EQUIPMENTUSING ABRASIVE WHEELS?
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Coming into contact with moving parts of theequipment (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 thework piece.
Inhalation of fumes and dusts from materials beingworked on.
Entanglement with loose items drawing grinder to theoperator
Electrocution (PAT TESTING )
HAZARDS
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ACCIDENTSContact Injuries 60%:
Touching wheel, burns, cuts, gashes, possible
Amputations, 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 1B
These injuries can be prevented by wearing the correct PPE anddeploying the guard/deflector as trained
Burst Wheels 10%:
Various Causes, Manufacturing defect ,incorrect use, behavioural,
incorrect disc for application of work .
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RIGHT TOOL FOR THE TASK
Is use of a portable angle grinder/cutter the right option fortask.
Has the grinder the following designed safety features?:
Soft start option (wherever possible)
Deadmans handle (incorporating auto disconnect lock on
facility). Deadmans 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
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RIGHT TOOL FOR THE TASK
Is 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?
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HOT WORK
Grinding /cutting is classed as hot work and will require ahot work certificate
in accordance with BEG/SPEC/SHE/CSI/042 Hot Work
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Guarding is provided to contain fragments of the wheel thatmight fly off if it did burst so preventing injury to the user andothers in the workplace
The guards secondary use is deflection of the debris and sparksaway from the operator
Operators suitably trained in the correct handling and mountingof abrasive wheels (This is for portable grinders only)
Correct mounting will reduce the risk of bursting.
Control Measures
Guard Fitted
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PERSONAL PROTECTIVE EQUIPMENTMandatory PPE requirement
Kevlar Sleeves
Wide vision goggles, Offer eye protection and also prevent dust and debris enteringusers eyes or/and Full face visor as an alternative offers full face protection but is not
sealed against dust and debris
impact rated to BS grade 1 or EN grade B
Consideration should be given full face fitted respiratory units or indirect vented
goggles to prevent dust ingress
Heavy duty gloves (Riggers leather) as a compromise is required that allows user tohold and maneuver the grinder during use
Rated for mechanical protection
EN 388Abrasion rated 3 or greater
Cut rated 4 or greater
Tear 2 or greater
Puncture 1 or greater
PERSONAL PROTECTIVE
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PERSONAL PROTECTIVEEQUIPMENT
A Kevlar fibre knitted sleeve with or without the cowhide split leather
reinforcement on each arm
Hearing defenders due to high noise levels
Fire retardent workwear close fitting, no loose cords that may becomeentangled and draw the angle grinder/cutter into the user
Long hair/jewellery - tied back/made secure
Task 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 operator
Leather apron/jacket may offer protect to lower body and chest area(although may not be practical)
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Grinders 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 thewheel in the metal it removes, but a clogged wheel becomes a heat generatorand 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 discs Copper
Brass
Aluminium
Paint coatings
Always select the right disc for the material tobe worked on if in doubt refer to manufacturer
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PERSONAL PROTECTIVE EQUIPMENT
Heavy duty rigger glovesare suitable the gloves must
be flexible so as not tocompromise the feel of the
user
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PERSONAL PROTECTIVE EQUIPMENT
The disposable dust mask will only give nonhazardous dust protection
(Use a Non disposable with correct filterattached for hazardous material)
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PERSONAL PROTECTIVE EQUIPMENT
Heavy duty gloves
Kevlar & Leather sleevesWorn when using grinders
may be worn over or
under overall sleeves
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PERSONAL PROTECTIVE EQUIPMENT
3M9925 / 8835 Impact grade 1B goggles
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All moving parts of work equipment must be suitablyguarded.
If adjustable guards are fitted they must always beadjusted 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.
GUARDS
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Automatic Blade Guard - Portable Cut-Off Saw
GUARDS
Not covered underthe requirements
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GUARDS
Guard Fitted
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No Guard can be fitted to this type oftool therefore totally reliant on safemethod of operation and PPE worn.
Not covered under these
requirements
GUARDS
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Task: Cut reinforcing bars from box-out inconcrete wall.
Work Equipment: 4 Angle grinder fitted with
steel cutting disc.
Personnel: Experienced General Labourertrained in abrasive wheels.
The operative requested a new pair of glovesfrom the stores but the expected delivery hadnt
arrived yet.
The operative went to stores to collect an anglegrinder, the only one available had its guardremoved he took it anyway.
Unknown persons previously using the toolremoved an angle grinder guard.
Instead of continuing to use the gloves healready has the operative doesnt wear
gloves whilst carrying out the task.
Accident happens, and operative received injurieswhich resulted in him losing sections of hisfingers and becoming disabled for the remainderof his life.
GUARDS CONSEQUENCES OF NOTUSING!!!!
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REMEMBER USER INSPECTIONS
Portable Hand HeldGrinders
Inspect grinder housing to ensure no cracking/breakage
Ensure that the cable is free from cracking/burning/brokensheath and that the plug is in good condition Must be 110 volts & Pat Tested Discs inspected and in good condition (correct disc speedfor grinderSecond Handle fittedNo exposed wires or lacerations on the cable
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Practical Test
The operators training history MUST be confirmed as having covered the use
of portable angle grinders/cutters
This 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 PPE
Grinder (Approved version)
P i l T
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Practical Test
Under observation
If a group session ask each person to do separate checksand others to comment
Request operator to complete grinder inspection for obvious defects
Once inspections are completed ask operator to don required PPE
Request operator to adjust the guard on the grinder (Not plugged in)
Request operator to change the disc on the grinder
Request 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 it
Ask for any further points missed from the session that would improve it
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SUMMARY
Abrasive wheels use is covered by the Provisionand Use of Work Equipment Regulations 1998
You must be trained and deemed competent.
This training is not abrasive wheel training.
You must wear the correct PPE
Do not defeat safety devices (guards, side handleetc)
If you are unsure, STOP and ask.
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THANK YOU
ANY QUESTIONS?