Element 1:- Work Equipment Hazards and Control Flashcards
Precautions in maintenance of Work Equipment
- Use of permit to work
- Isolation/locking off
- Dissipation of stored energy
- Segregation
- Safe means of access
- Use of PPE
- Competent personnel
- Ensure safe environment (allow to cool)
Hazards of maintenance work opposite of above plus
- Chemicals
- Biological
- Asbestos
- Hot or cold
- Pressure to complete work
Mechanical Hazards of Machinery
- Entanglement
- Traps
- Impact
- Contact
- Ejection
Non-Mechanical Hazards of Machinery
- Chemical/biological hazards
- Dust and fumes
- Ergonomics
- Electricity
- Fire/explosion
- Hazardous substances
- Manual handling
- Noise
- Radiation
- Stability of machine
- Temperature extremes
- Ultra violet light
- Vibration
Photocopier and Shredder Common hazards
- Electrical
- Ergonomic
- Noise
- Stability of machine
Photocopier: Drawing in Trap between moving parts Chemicals Ultra violet light
Document shredder:
Drawing in to cutters
Contact with cutters
Dust
Bench top grinder/Pedestal drill common hazards
Manufacturing/Maintenance Machinery:
Bench top grinder/Pedestal drill • Common Hazards • Electricity • Ergonomics • Dust • Stability of machine
Bench top grinder: Contact with rotating wheel Drawing into the trap between the tool rest and wheel Ejected parts of wheel or workpiece Fire and sparks Vibration
Pedestal drill: Entanglement Contact (Stabbing/puncture) Impact from an unsecured workpiece Cutting from swarf Ejection of a broken bit or materials Manual handling
(Agricultural/Horticultural Machinery)
Cylinder mower and strimmer Common Hazards:
- Biological e.g. animal droppings
- Chemicals e.g. herbicides
- Electrical
- Fire/explosion if petrol
- Ergonomics
- Manual handling
- Noise and vibration
- Ejection of materials
Cylinder mower:
Contact with rotating blades
Entanglement in blades
Strimmer:
Contact with cutter
Entanglement with cutter
(Retail Machinery)
Waste Compactor/Checkout Conveyor Common hazards
- Electricity
- Ergonomics
- Manual handling
Waste Compactor:
Impact
Crush
Biological infection from waste
Checkout Conveyor:
Drawing in traps
Non-ionising radiation (Scanner)
(Construction Machinery)
Cement Mixer/Circular Saw Common Hazards
- Dust
- Electricity
- Stability of machine
- Ergonomics
- Trapping between fixed and moving parts
- Noise
Cement Mixer:
Entanglement
Chemicals
Manual handling
Circular Saw:
Drawing into rotating blade
Contact
Ejection of materials
Machinery Hierarchy of Controls
- Fixed guards
- Other guards or protection devices
- Protective devices (Jigs, Holders, Push Sticks)
- Information, Instruction, Training and Supervision
what is Fixed Guards?
physical barrier not connected to machine controls (no moving parts + requires a tool to remove it)
advantage + disadvantages of fixed guards:
Adva: Minimal maintenance Only defeated by deliberate act Only visual inspection May protect against other hazards e.g. noise, dust, ejection of materials
Disad:
Not linked to machine controls
No protection when removed
Access to dangerous parts when removed
More difficult to remove not practical when frequent access required
Tends to be left unfixed when frequent access required
May hamper visibility
what is Interlock Guard?
Linked to the machine controls so that when the machine is in a dangerous condition the guard cannot be opened or opening the guard causes the machine to become safe
Advantages + disadvantages of interlock guard:
Adv: Allow safe access for feeding materials Convenient to use Less likely to be deliberately defeated Speeds up operations
Disadv: Increase the complexity of the machine Difficult to test and maintain May need a brake or time delay Components could fail in service Regular maintenance required May not fail to safety
