Small bowls may be emptied by hand; large bowls or troughs are tilted to pour out the dough.

Figure 1: Dough mixer

Dough mixers

Figure 2: Large bowl mixer

Large bowl mixer

Figure 3: Mixing trough tilted with guard open

Mixing trough tilted with guard open

Tasks

Task – Load & unload

Hazard

Heavy lifting and turning

Harm

  • Strain injury

Controls

  • SUPPLY ingredients in small, manageable quantities.
  • USE mechanical aids to hoist ingredients

Frequent turns and lifts with heavy sacks will cause muscle strain.

Task – Load & unload

Hazard

Heavy lifting and turning

Harm

  • Strain injury

Controls

  • SUPPLY ingredients in small, manageable quantities.
  • USE mechanical aids to hoist ingredients

Frequent turns and lifts with heavy sacks will cause muscle strain.

Task – Mix ingredients

Hazard

Nips between mixer blades or between mixer blades and bowl, trapping hands or fingers

Harm

  • Crush injuries
  • Bruising
  • Fractures
  • Deep cuts

Controls

  • FIX guards to prevent or reduce access to trapping points between paddles, beaters or ribbons, and the mixing bowl.
  • ENSURE that guards are interlocked and operational.
  • RETROFIT guards to older mixers to enable addition of ingredients during mixing if required.

Operators should know how to stop a dough mixer before they start it.

Hazard

Nips between tilting and fixed parts of large mixers, trapping body parts

Harm

  • Crush injuries
  • Bruising
  • Fractures

Controls

  • PREVENT access to trapping points between the tilting bowl and the frame of tilting mixers.
  • PLACE the hold-to-run control for tilting the bowl in a fixed position at a safe distance from the tilting bowl, and with a clear view of all sides of the mixer.

Body parts can get caught between fixed and moving parts of the mixer.

Hazard

Entanglement in turning mixer blades

Harm

  • Scalping if hair is caught
  • Crush injuries

Controls

  • TIE BACK long hair and beards.
  • WEAR tight fitting clothes, especially tight fitting sleeves.
  • NEVER wear jewellery.
  • Safe dress is also required in a bakery for HYGIENE reasons.

Loose clothing, long hair, and jewellery can wrap around turning mixer blades.

Other (non-mechanical) hazards

Hazard

Breathing in flour dust

Harm

  • Lung damage
  • Breathing difficulties
  • Asthma
  • Nose, throat and eye irritation
  • Sensitisation through repeated exposure
  • Potential fire or explosion

Controls

  • Machinery MUST be controlled to hold flour as much as possible.
  • KEEP dust contained and controlled.
  • ENCLOSE and SEAL interlock switches against dust and moisture.
  • USE dust extraction equipment to minimise dust getting in the operator’s breathing zone.
  • Vacuum cleaners MUST be designed for cleaning flour – blowing flour with compressed air will only move it elsewhere.
  • ALWAYS USE respiratory protection.
  • ALWAYS WEAR eye protection.

Hazard

Noise

Harm

  • Hearing damage or loss

Controls

  • REDUCE noise levels by isolating machines or enclosing within noise barriers.
  • ASSESS noise levels.
  • ARRANGE hearing screenings.
  • WEAR hearing protection.

A safe level of noise over an eight hour day is 85dB(A). A dough mixer may exceed this noise intensity.

Hazard

Slips, trips and falls

Harm

  • Bruising
  • Fractures
  • Cuts

Controls

  • KEEP up-to-date housekeeping procedures.
  • CLEAN up spills early as possible, and display signage.
  • STACK materials neatly to keep walkways and production areas clear.
  • USE a degreasing solution on oil and grease spills.
  • USE slip-resistant floor coverings, and WEAR non-slip footwear.

Slips, trips and fall are common bakery accidents due to wet floors, spilled dough, batter, and dry ingredients, as well as uneven or obstructed floor surfaces.

Task – Maintenance, cleaning & repairs

Hazard

Entanglement from unexpected movement

Harm

  • Crush injuries
  • Cuts

Controls

  • LOCK OUT ALL power supplies before maintenance, cleaning and repairs.
  • FIT guards to any additional devices like a hoist.
  • FIT RETROFIT guards for older mixers to enable cleaning while the machine is not powered.
  • TEST emergency stops and interlocks at the start of each shift.
  • UNDERTAKE regular safety checks to ensure mixers are operating safely.

Operators MUST recognise faults and be aware of potential consequences. Instructions MUST be provided in a language understood by employees. If additional safeguards are required, they MUST be fitted by a competent person working to recognised safety standards.