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Evidence Guide: AHCARB206 - Operate and maintain stump grinding machines

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

AHCARB206 - Operate and maintain stump grinding machines

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare for stump removal operations

  1. Determine site location and details and clarify with supervisor
  2. Determine the depth below ground of stump grinding works
  3. Determine and confirm location and depth of above-and-below-ground services
  4. Unload stump grinder machine
  5. Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk
Determine site location and details and clarify with supervisor

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine the depth below ground of stump grinding works

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine and confirm location and depth of above-and-below-ground services

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Unload stump grinder machine

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Carry out pre-operational and safety checks

  1. Check maintenance log is complete and up to date
  2. Check belts are appropriately tensioned and in good order
  3. Check teeth are sharp
  4. Check no teeth are missing or loose
  5. Check tyre pressure is correct or tracks are appropriately tensioned
  6. Check levels of oils and fluids
  7. Check hoses
  8. Check brakes are operational
  9. Check cutter head rotates freely and is not obstructed
Check maintenance log is complete and up to date

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check belts are appropriately tensioned and in good order

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check teeth are sharp

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check no teeth are missing or loose

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check tyre pressure is correct or tracks are appropriately tensioned

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check levels of oils and fluids

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check hoses

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check brakes are operational

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check cutter head rotates freely and is not obstructed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check stump grinder safety features

  1. Check guards for belt, power take-off (PTO) and grinder head are in place
  2. Check kill switch clearly identifiable and working
  3. Check that dead-man is working if fitted
  4. Check debris curtain present and in good order
  5. Check dust suppression system is working if fitted
Check guards for belt, power take-off (PTO) and grinder head are in place

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check kill switch clearly identifiable and working

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check that dead-man is working if fitted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check debris curtain present and in good order

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check dust suppression system is working if fitted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete preparations for work

  1. Select and use appropriate personal protective equipment
  2. Confirm first aid and emergency personnel, equipment and procedures
  3. Expose stump surrounds manually and check for and remove foreign bodies
  4. Moisten surrounds as required
  5. Record and implement work health, safety, site, environmental and traffic control measures
Select and use appropriate personal protective equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Confirm first aid and emergency personnel, equipment and procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Expose stump surrounds manually and check for and remove foreign bodies

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Moisten surrounds as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record and implement work health, safety, site, environmental and traffic control measures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Position stump grinder

  1. Determine exclusion zone for work operations
  2. Isolate exclusion zone with barriers and signs
  3. Position machine level within recommended ranges to avoid rollover
  4. Avoid holes with machine wheels
  5. Position machine to minimise impact from flying debris
  6. Position operator in low risk position
  7. Position operator to provide a clear view of the stump
  8. Locate safety screens as required
Determine exclusion zone for work operations

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Isolate exclusion zone with barriers and signs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Position machine level within recommended ranges to avoid rollover

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Avoid holes with machine wheels

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Position machine to minimise impact from flying debris

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Position operator in low risk position

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Position operator to provide a clear view of the stump

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Locate safety screens as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Undertake removal operations

  1. Communicate with work team during operations using voice, hand and whistle signals
  2. Confirm work zone cleared prior to starting cutter head
  3. Plan to complete a series of grinds across the stump
  4. Start cutter head
  5. Stop work if exclusion zone is breached and disengage cutter head if required
  6. Position cutter head over stump
  7. Engage cutter head into stump surface
  8. Maintain engine speed in revolutions-per-minute (RPM)
  9. Ensure grinding process is accurate, smooth and ergonomic
  10. Grind stump to recommended depth of cut on each cutting pass
  11. Ensure the cut size of each pass is not excessively deep causing the machine to labour excessively or to stall
  12. Grind stump to predetermined spread and depth
  13. Operate equipment without damaging underground services and surrounding areas
Communicate with work team during operations using voice, hand and whistle signals

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Confirm work zone cleared prior to starting cutter head

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Plan to complete a series of grinds across the stump

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Start cutter head

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Stop work if exclusion zone is breached and disengage cutter head if required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Position cutter head over stump

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Engage cutter head into stump surface

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain engine speed in revolutions-per-minute (RPM)

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ensure grinding process is accurate, smooth and ergonomic

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Grind stump to recommended depth of cut on each cutting pass

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ensure the cut size of each pass is not excessively deep causing the machine to labour excessively or to stall

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Grind stump to predetermined spread and depth

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operate equipment without damaging underground services and surrounding areas

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Remove grindings

  1. Reposition machine away from ground stump
  2. Disengage cutter head
  3. Wait and remain clear of cutter head until cutter head stops moving
  4. Remove build-up of grindings
Reposition machine away from ground stump

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Disengage cutter head

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Wait and remain clear of cutter head until cutter head stops moving

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Remove build-up of grindings

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform ongoing grinding operations

  1. Make check in calls at prearranged times
  2. Inspect grinder as required between stumps and when refuelling
  3. Shutdown immediately if abnormal vibration or noise develops
  4. Stop the engine before refuelling and allow engine to cool as required
  5. Follow Safe Work Method Statement instructions for refuelling
  6. Replace and secure fuel cap before restarting
  7. Disengage cutter head and ensure a complete stop before moving to a new stump
Make check in calls at prearranged times

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect grinder as required between stumps and when refuelling

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Shutdown immediately if abnormal vibration or noise develops

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Stop the engine before refuelling and allow engine to cool as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Follow Safe Work Method Statement instructions for refuelling

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Replace and secure fuel cap before restarting

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Disengage cutter head and ensure a complete stop before moving to a new stump

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete stump removal operation

  1. Back-fill stump hole to original ground level
  2. Maintain clean and safe work area throughout work and upon completion
  3. Collect waste material and dispose of or recycle in a manner causing minimal environmental damage
  4. Clean, maintain and store tools and equipment
  5. Perform basic maintenance, including sharpening grinder and replacing teeth as required
  6. Load grinder in accordance with Safe Work Method Statement
  7. Secure grinder for transport
  8. Update records of operator usage in log record
  9. Update records of maintenance and replacement items
Back-fill stump hole to original ground level

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain clean and safe work area throughout work and upon completion

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Collect waste material and dispose of or recycle in a manner causing minimal environmental damage

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Clean, maintain and store tools and equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform basic maintenance, including sharpening grinder and replacing teeth as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Load grinder in accordance with Safe Work Method Statement

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Secure grinder for transport

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Update records of operator usage in log record

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Update records of maintenance and replacement items

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Prepare for stump removal operations

1.1 Determine site location and details and clarify with supervisor

1.2 Determine the depth below ground of stump grinding works

1.3 Determine and confirm location and depth of above-and-below-ground services

1.4 Unload stump grinder machine

1.5 Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk

2. Carry out pre-operational and safety checks

2.1 Check maintenance log is complete and up to date

2.2 Check belts are appropriately tensioned and in good order

2.3 Check teeth are sharp

2.4 Check no teeth are missing or loose

2.5 Check tyre pressure is correct or tracks are appropriately tensioned

2.6 Check levels of oils and fluids

2.7 Check hoses

2.8 Check brakes are operational

2.9 Check cutter head rotates freely and is not obstructed

3. Check stump grinder safety features

3.1 Check guards for belt, power take-off (PTO) and grinder head are in place

3.2 Check kill switch clearly identifiable and working

3.3 Check that dead-man is working if fitted

3.4 Check debris curtain present and in good order

3.5 Check dust suppression system is working if fitted

4. Complete preparations for work

4.1 Select and use appropriate personal protective equipment

4.2 Confirm first aid and emergency personnel, equipment and procedures

4.3 Expose stump surrounds manually and check for and remove foreign bodies

4.4 Moisten surrounds as required

4.5 Record and implement work health, safety, site, environmental and traffic control measures

5. Position stump grinder

5.1 Determine exclusion zone for work operations

5.2 Isolate exclusion zone with barriers and signs

5.3 Position machine level within recommended ranges to avoid rollover

5.4 Avoid holes with machine wheels

5.5 Position machine to minimise impact from flying debris

5.6 Position operator in low risk position

5.7 Position operator to provide a clear view of the stump

5.8 Locate safety screens as required

6. Undertake removal operations

6.1 Communicate with work team during operations using voice, hand and whistle signals

6.1 Confirm work zone cleared prior to starting cutter head

6.3 Plan to complete a series of grinds across the stump

6.4 Start cutter head

6.5 Stop work if exclusion zone is breached and disengage cutter head if required

6.6 Position cutter head over stump

6.7 Engage cutter head into stump surface

6.8 Maintain engine speed in revolutions-per-minute (RPM)

6.9 Ensure grinding process is accurate, smooth and ergonomic

6.10 Grind stump to recommended depth of cut on each cutting pass

6.11 Ensure the cut size of each pass is not excessively deep causing the machine to labour excessively or to stall

6.12 Grind stump to predetermined spread and depth

6.13 Operate equipment without damaging underground services and surrounding areas

7. Remove grindings

7.1 Reposition machine away from ground stump

7.2 Disengage cutter head

7.3 Wait and remain clear of cutter head until cutter head stops moving

7.4 Remove build-up of grindings

8. Perform ongoing grinding operations

8.1 Make check in calls at prearranged times

8.2 Inspect grinder as required between stumps and when refuelling

8.3 Shutdown immediately if abnormal vibration or noise develops

8.4 Stop the engine before refuelling and allow engine to cool as required

8.5 Follow Safe Work Method Statement instructions for refuelling

8.6 Replace and secure fuel cap before restarting

8.7 Disengage cutter head and ensure a complete stop before moving to a new stump

9. Complete stump removal operation

9.1 Back-fill stump hole to original ground level

9.2 Maintain clean and safe work area throughout work and upon completion

9.3 Collect waste material and dispose of or recycle in a manner causing minimal environmental damage

9.4 Clean, maintain and store tools and equipment

9.5 Perform basic maintenance, including sharpening grinder and replacing teeth as required

9.6 Load grinder in accordance with Safe Work Method Statement

9.7 Secure grinder for transport

9.8 Update records of operator usage in log record

9.9 Update records of maintenance and replacement items

Required Skills and Knowledge

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Prepare for stump removal operations

1.1 Determine site location and details and clarify with supervisor

1.2 Determine the depth below ground of stump grinding works

1.3 Determine and confirm location and depth of above-and-below-ground services

1.4 Unload stump grinder machine

1.5 Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk

2. Carry out pre-operational and safety checks

2.1 Check maintenance log is complete and up to date

2.2 Check belts are appropriately tensioned and in good order

2.3 Check teeth are sharp

2.4 Check no teeth are missing or loose

2.5 Check tyre pressure is correct or tracks are appropriately tensioned

2.6 Check levels of oils and fluids

2.7 Check hoses

2.8 Check brakes are operational

2.9 Check cutter head rotates freely and is not obstructed

3. Check stump grinder safety features

3.1 Check guards for belt, power take-off (PTO) and grinder head are in place

3.2 Check kill switch clearly identifiable and working

3.3 Check that dead-man is working if fitted

3.4 Check debris curtain present and in good order

3.5 Check dust suppression system is working if fitted

4. Complete preparations for work

4.1 Select and use appropriate personal protective equipment

4.2 Confirm first aid and emergency personnel, equipment and procedures

4.3 Expose stump surrounds manually and check for and remove foreign bodies

4.4 Moisten surrounds as required

4.5 Record and implement work health, safety, site, environmental and traffic control measures

5. Position stump grinder

5.1 Determine exclusion zone for work operations

5.2 Isolate exclusion zone with barriers and signs

5.3 Position machine level within recommended ranges to avoid rollover

5.4 Avoid holes with machine wheels

5.5 Position machine to minimise impact from flying debris

5.6 Position operator in low risk position

5.7 Position operator to provide a clear view of the stump

5.8 Locate safety screens as required

6. Undertake removal operations

6.1 Communicate with work team during operations using voice, hand and whistle signals

6.1 Confirm work zone cleared prior to starting cutter head

6.3 Plan to complete a series of grinds across the stump

6.4 Start cutter head

6.5 Stop work if exclusion zone is breached and disengage cutter head if required

6.6 Position cutter head over stump

6.7 Engage cutter head into stump surface

6.8 Maintain engine speed in revolutions-per-minute (RPM)

6.9 Ensure grinding process is accurate, smooth and ergonomic

6.10 Grind stump to recommended depth of cut on each cutting pass

6.11 Ensure the cut size of each pass is not excessively deep causing the machine to labour excessively or to stall

6.12 Grind stump to predetermined spread and depth

6.13 Operate equipment without damaging underground services and surrounding areas

7. Remove grindings

7.1 Reposition machine away from ground stump

7.2 Disengage cutter head

7.3 Wait and remain clear of cutter head until cutter head stops moving

7.4 Remove build-up of grindings

8. Perform ongoing grinding operations

8.1 Make check in calls at prearranged times

8.2 Inspect grinder as required between stumps and when refuelling

8.3 Shutdown immediately if abnormal vibration or noise develops

8.4 Stop the engine before refuelling and allow engine to cool as required

8.5 Follow Safe Work Method Statement instructions for refuelling

8.6 Replace and secure fuel cap before restarting

8.7 Disengage cutter head and ensure a complete stop before moving to a new stump

9. Complete stump removal operation

9.1 Back-fill stump hole to original ground level

9.2 Maintain clean and safe work area throughout work and upon completion

9.3 Collect waste material and dispose of or recycle in a manner causing minimal environmental damage

9.4 Clean, maintain and store tools and equipment

9.5 Perform basic maintenance, including sharpening grinder and replacing teeth as required

9.6 Load grinder in accordance with Safe Work Method Statement

9.7 Secure grinder for transport

9.8 Update records of operator usage in log record

9.9 Update records of maintenance and replacement items

The candidate must be observed removing stumps using a motorised stump grinder using low-risk work procedures. The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.

The candidate must provide evidence for and demonstrate:

determining site location and details and clarifying with supervisor

determining the depth below ground of stump grinding works

determining and confirm location and depth of above-and-below-ground services

unload stump grinder machine

undertaking a site-specific risk assessment by identifying work health and safety hazards and assessing risk

checking maintenance log complete and up to date

checking belts appropriately tensioned and in good order

checking teeth are sharp

checking no teeth are missing or loose

checking tyre pressure is correct or tracks are appropriately tensioned

checking levels of oils and fluids

checking hoses

checking brakes are operational

checking cutter head rotates freely and is not obstructed

checking guards for belt, power take-off (PTO) and grinder head are in place

checking kill switch clearly identifiable and working

checking that dead-man is working if fitted

checking debris curtain present and in good order

checking dust suppression system is working if fitted

selecting and use appropriate personal protective equipment

confirming first aid and emergency personnel, equipment and procedures

exposing stump surrounds manually and check for and remove foreign bodies

moistening surrounds as required

recording and implementing work health, safety, site, environmental and traffic control measures

determining exclusion zone for work operations

isolating exclusion zone with barriers and signs

positioning machine level within recommended ranges to avoid rollover

avoiding holes with machine wheels

positioning machine to minimise impact from flying debris

positioning operator in low risk position

positioning operator to provide a clear view of the stump

locating safety screens as required

communicating with work team during operations using voice, hand and whistle signals

confirming work zone cleared prior to starting cutter head

planning to complete a series of passes across the stump

starting cutter head

stopping work if exclusion zone is breached and disengage cutter head if required

positioning cutter head over stump

engaging cutter head into stump surface

maintaining engine speed in revolutions-per-minute (rpm)

ensuring grinding process is accurate, smooth and ergonomic

grinding stump to recommended depth of cut on each cutting pass

ensuring the cut size of each pass is not excessively deep causing the machine to labour excessively or to stall

grinding stump to predetermined spread and depth

operating equipment without damaging underground services and surrounding areas

repositioning machine away from ground stump

disengaging cutter head if risk of making unwanted contact

waiting and remaining clear of cutter head until cutter head stops moving

removing build-up of grindings

making check in calls at prearranged times

inspecting grinder as required between stumps and when refueling

shutting down immediately if abnormal vibration and/or noise develops

stopping the engine before refueling and allow engine to cool as required

following safe work method statement instructions for refueling

replacing and securing fuel cap before restarting

disengaging cutter head and ensure a complete stop before moving to a new stump

back-filling stump hole to original ground level

maintaining clean and safe work area throughout work and upon completion

collecting waste material and dispose of or recycle in a manner causing minimal environmental damage

cleaning, maintaining and storing tools and equipment

performing basic maintenance, including sharpening grinder and replacing teeth as required

loading grinder in accordance with safe work method statement

securing grinder for transport

updating records of operator usage in log record

updating records of maintenance and replacement items.

The candidate must demonstrate knowledge of:

site hazard identification methods

site risk assessment systems

control measures for work health, safety, site, environmental and traffic control

personal protective equipment

communication systems using voice, hand and whistle signals

first aid

emergency procedures

methods of locating services

pre-operational checks of stump grinders including:

logs

belts

teeth

tyre pressure

oils and fluids

hoses

brakes

cutter head

guards

safety checks of stump grinders including:

guards for belt, power take-off (PTO) and grinder head

kill switch

dead man

debris curtain

dust suppression

exclusion zones

operation of stump grinders

cutter head engagement and disengagement

positioning of stump grinders and operator

work zone

methods of determining spread and depth of cut

recommended depths of cut

cutting plan

engine speed (rpm)

abnormal vibration

methods of back-filling

environmental implications of removal activities

appropriate methods of collecting waste material and disposal or recycling methods

basic maintenance of stump grinders

methods of sharpening stump grinders

methods of teeth replacement of stump grinders

records of operator usage in log record

methods of maintaining records for basic maintenance and replacement items.

Range Statement