Script error: No such module "Infobox".
- If it sticks to a magnet it is fine.
- If it is stainless steel (and you are sure) it is fine.
- Otherwise check first.
- Ensure that the wheels are free from defects and have no aluminium embedded in them. They should be dull, not shiny.
- Ensure that the rests are near but not touching the wheels.
- Ensure that the guards are down - adjust them from the hinge not the loose end.
- Ensure the wheels rotate freely before switching the grinder on by turning them by hand.
- When adjusting the clear guards, make sure to adjust the left-hand by grabbing the top of the guard. It has snapped off in the past and been reattached using epoxy.
Using the grinder
- Do not grip the work too close to the wheel - it gets hot
- Do not force the work too hard - the grinder relies on speed, not on power
- When smoothing the end of a rod, steady it with the hand closest to the grinder and turn and rotate it with the other.
- Wear eye protection - hot metal in the eye is not pleasant
- Do NOT wear gloves - they could get entangled and pull your hand into the machine
- Never use the side of the wheel, however convenient it may seem. This can cause the wheel to shatter
- Don't stand in the path of the wheel when starting the grinder in case a wheel should shatter
- Don't leave the grinder until it has completely stopped spinning - other members may not realise it is still dangerous
|Company Name||Manchester Hackspace|
|Assessment Completed by||Gregory Morris|
|Activity or area being assessed||Bench Grinder|
Who might be affected
|Others (please describe)|
|Hazard Type||Description of Hazard||Initial Risk||Action Required||Final Risk|
|Fire (electrical)||Due to electrical failure||3||2||6||Machine not to be left unsupervised
Machine to be taken out of use if damaged Machine to be visually inspected before use Appropriate fire extinguisher to be available at all times
|Burns||Personal injury in the form of burns due to friction heating the object being ground||2||4||8||Machine only to be operated by competent persons
Parts to be given time to cool down before handling
|Electric Shock||Electric shock personal injury and resultant injury - burns and tissue damage.||3||2||6||Machine to be taken out of use if damaged
Machine to be visually inspected before use
|Blindness/Eye Injury||Blindness/Eye Injury due to sparks||4||4||16||Operator to use eye protection||3||1||3|
|Entanglement Risk||Bodily parts becoming trapped in wheel||4||3||12||Operator to wear appropriate clothes with short sleeves, remove dangling jewelry, and not wear gloves||3||1||3|
|Cut Risk||Cuts from sharp objects||1||3||3||Training to include warning that parts can have sharp edges||1||2||2|
|Wheel shattering||Injury due to impact of shattered grinding wheel||4||3||12||Wheel will not be stressed by grinding on the side or using excessive force||4||1||4|
<section begin=PPE />
|Head Protection||Eye Protection||Ear Protection||Respiration Protection||Hand Protection||High Visibility||Safety Harness|
|Not required||Required||Not required||Not required||Not required||Not required||Not required|
<section end=PPE />
Any member who wishes to use the equipment must be trained in its safe operation by a competent member or other body, and supervised until competent. The findings of this risk assessment should be explained to the member. Any hazards discovered during use of the equipment should be investigated and this Risk Assessment updated if necessary.
Guide to the risk matrix points system
|Hazard severity||Points rating||Definition|
|Nil||1||Very minor injury, bruise, graze, no risk of disease.|
|Slight||2||Minor injury, which would allow the individual to continue work after first aid treatment on site or at a local surgery. The duration of the stoppage or treatment is such that the normal flow of work is not seriously interrupted.|
|Moderate||3||Temporary disability causing injury or disease capable of keeping an individual off work for three days or more and reportable under RIDDOR|
|High||4||Causing death, serious injury or permanent disability to an individual.|
|Very high||5||Causing multiple deaths and widespread destruction eg. fire, building collapse.|
|Hazard probability||Points Rating||Definition|
|Remote possibility||1||There is really no risk present. Only under freak conditions could there be any possibility of an accident or illness. All reasonable precautions have been taken - This should be the normal state of the workplace.|
|Unlikely||2||This incident or illness might occur but the probability is low and the risk minimal.|
|Possible||3||The accident may occur if additional factors precipitate it, but it is unlikely to happen without them.|
|Highly likely||4||Will happen more often than not. Additional factors could precipitate an incident but it is still likely to happen without this additional factor.|
|Inevitable||5||If the work continues as it is, there is almost 100% certainty that an accident will happen, for example:
• A broken stair or broken rung on a ladder • Bare, exposed electrical conductors • Unstable stacks of heavy boxes
|Risk Rating Definitions|
|1 to 4||Low||No action required|
|5 to 9||Moderate||Reduce risks if reasonably practicable|
|10 to 15||High Risk||Priority action to be undertaken|
|16 to 25||Unacceptable||Action must be taken IMMEDIATELY|
|1 Nil||2 Slight||3 Moderate||4 High||5 Very High|
|4 Highly Likely||L||M||H||U||U|