Drawing-in and trapping hazards
Clothing, or parts of the body, can be drawn in by pairs of moving parts or moving and fixed parts.
Types of machine
- Round balers
- Mobile wood chippers
- Haulm rollers, e.g. potato harvesters, hop processors
- Feed mixers
- Forage harvesters
- Pick-ups on balers, forage harvesters and combine harvesters have intakes that include reels fitted with tines. These tines can easily catch on clothing and may draw people into the machine.
- Reaching into discharge ends through the outlet chute
- Reaching in through inspection hatches
- Impatience to clear a blockage before machinery has stopped moving
- Getting clothes or fingers too close to in-running nip points.
- Tines catch on loose-fitting clothing
- Design intakes so that moving parts cannot be reached, or fit them with fixed distance guards.
- Fit controls to allow power to the intakes to be quickly isolated and make maintenance, adjustment, cleaning or unblocking operations safe.
- Reverse drive mechanisms may allow blockages to be cleared without any intervention by an operator
- Provide appropriate tools and methods to clear blockages safely.
- Design discharge ends and inspection hatches with appropriate reach distances, or fit them with fixed distance guards, so that moving parts cannot be reached.
- If the operator can reach moving parts when they open or remove discharge chutes or inspection hatches, provide interlocks to isolate the power and bring the moving parts to a halt before they can be reached.
- Design rotating parts to avoid unnecessary projections or irregular shapes.
- Fit nip points, which for practical reasons cannot be guarded by fixed enclosing guards, with nip bars or plates.
- Use fixed guards to prevent access to moving parts that are not ‘safe by position’. Fixed guards must require the use of a tool to open or remove and their fixings should generally remain attached to either the guard or machine when removed.
- If access is needed that precludes the use of fixed guards, use interlocking guards.
Operator instructions and training
Instructions for using this type of machinery must include clear guidance on:
- Safe methods of work to clear blockages
- Stopping machinery before reaching in
- Keeping guards in position
- Wearing appropriate clothing without loose cords
- Relevant training, e.g. Lantra qualification and accreditation.