Energy grinder

7/31/2019 Energy grinder

1/32

WELCOME

PORTABLE HANDHELD GRINDERAUTHORISATION TRAINING


2/32

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)


3/32

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?


4/32

Recent Events


5/32

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.


6/32

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


7/32

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


8/32

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


9/32

TYPES OF WORK EQUIPMENTUSING ABRASIVE WHEELS?


10/32

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


11/32

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 .


12/32

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


13/32

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?


14/32

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


15/32

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


16/32

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


17/32

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)


18/32

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


19/32

PERSONAL PROTECTIVE EQUIPMENT

Heavy duty rigger glovesare suitable the gloves must

be flexible so as not tocompromise the feel of the

user


20/32


The disposable dust mask will only give nonhazardous dust protection

(Use a Non disposable with correct filterattached for hazardous material)


21/32


Heavy duty gloves

Kevlar & Leather sleevesWorn when using grinders

may be worn over or

under overall sleeves


22/32


3M9925 / 8835 Impact grade 1B goggles


23/32

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


24/32

Automatic Blade Guard - Portable Cut-Off Saw

GUARDS

Not covered underthe requirements


25/32

GUARDS

Guard Fitted


26/32

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


27/32

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!!!!


28/32

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


29/32

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


30/32

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


31/32

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.


32/32

THANK YOU

ANY QUESTIONS?

Documents

Energy grinder