Modification History
Not applicable.
Unit Descriptor
This unit covers the conducting of large diameter auger drilling in civil construction and drilling industries. It includes planning and preparing for drilling, operating the drill, maintaining equipment, and responding to problems.
Application of the Unit
Large flight augers include short-flight and bucket augers and are used for foundation construction drilling. This unit is appropriate for those working in a operational roles, at worksites within:
- Civil construction
- Drilling
Licensing/Regulatory Information
Refer to Unit Descriptor.
Pre-Requisites
Not applicable.
Employability Skills Information
This unit contains employability skills.
Elements and Performance Criteria Pre-Content
Elements describe the essential outcomes of a unit of competency. |
Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the required skills and knowledge section and the range statement. Assessment of performance is to be consistent with the evidence guide. |
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
1. Plan and prepare for conducting of large diameter auger drilling |
1.1. Access, interpret and apply compliance documentation relevant to the work activity 1.2. Obtain, confirm and apply work instructions for the allocated task 1.3. Identify, manage and report all potential hazards 1.4. Resolve coordination requirements with others at the site prior to commencing and during work activities 1.5. Induct site visitors as required by procedures |
2. Operate large diameter auger drill |
2.1. Collar borehole, start hole, maintain hole alignment, take corrective action for deflections 2.2. Make up appropriate drill string 2.3. Handle additional drill stems, inserting them in the drill string 2.4. Use appropriate gears, rotation, feed and holdback so that flights or bucket are substantially full for the soil being drilled at any given depth 2.5. Interpret drilling factors to determine conditions at the bit 2.6. Make and break auger string and drive head connections safely 2.7. Maintain a clear hole and a clear bottom and deploy tools for cleaning hole bottom at completed depth 2.8. Interpret or calculate actual depth at any point during drilling, interpret depth of strata changes and identify fill depth in any bore 2.9. Select appropriate strategies for recovery of dropped augers 2.10. Recover drill string using winch and/or head/kelly 2.11. Insert surface casing and deepen hole using smaller diameter auger or bucket, if required 2.12. Disassemble drill string and change augers and bit components 2.13. Select bits for formation being drilled 2.14. Select appropriate augering method for situation 2.15. Maintain spoil removal from hole collar with appropriate safety protocols 2.16. Cover and secure bores to ensure safety of others and crew 2.17. Communicate effectively with crew, clients and management 2.18. Prepare and submit paperwork for daily activities 2.19. Ensure appropriate personal protective equipment and work clothing for the task is worn 2.20. Constantly maintain safe working conditions 2.21. Select and use water and drilling fluids as appropriate 2.22. Bell foundation piles, if required 2.23. Clean pile bases and insert reinforcement cages, if required 2.24. Deploy bucket augers through surface casing and when drilling under bentonite muds 2.25. Use spin off and side casting of spoil as appropriate 2.26. Record daily hole depths and progress |
3. Maintain equipment |
3.1. Monitor external wear in drill string, rotate string elements to ensure even wear 3.2. Interchange drill bits and/or drill bit elements to maintain free cutting ability 3.3. Check all string and equipment elements for wear and proper function 3.4. Replace worn elements in string, bits and equipment and recycle 'out of specification' equipment for repair or redundancy 3.5. Apply lubrication as appropriate 3.6. Maintain good housekeeping on site and for equipment in storage |
4. Respond to problems |
4.1. Identify possible operational problems in equipment or process 4.2. Identify symptoms of problems needing remedial action 4.3. Determine possible fault causes 4.4. Rectify problem using appropriate solution within area of responsibility 4.5. Follow through items initiated until final resolution has occurred 4.6. Report problems outside area of responsibility to designated person |
Required Skills and Knowledge
This section describes the skills and knowledge required for this unit. |
Required skills |
Specific skills are required to achieve the performance criteria in this unit, particularly for the application in the various circumstances in which this unit may be applied. This includes the ability to carry out the following as required to conduct large diameter auger drilling:
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Required knowledge |
Specific knowledge is required to achieve the Performance Criteria of this unit, particularly its application in a variety of circumstances in which the unit may be used. This includes knowledge of the following, as required to conduct large diameter auger drilling:
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Evidence Guide
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package. |
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Overview of assessment |
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Critical aspects for assessment and evidence required to demonstrate competency in this unit |
The evidence required to demonstrate competency in this unit must be relevant to worksite operations and satisfy all of the requirements of the performance criteria, required skills and knowledge and the range statement of this unit and include evidence of the following:
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Context of and specific resources for assessment |
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Method of assessment |
This unit may be assessed in a holistic way with other units of competency. The assessment strategy for this unit must verify required knowledge and skill and practical application using more than one of the following assessment methods:
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Guidance information for assessment |
Consult the SkillsDMC User Guide for further information on assessment including access and equity issues. |
Range Statement
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
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Relevant compliance documentation may include: |
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Work instructions may come from: |
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Hazards include: |
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Hazard management includes: |
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Coordination requirements may include |
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Personal protective equipment includes: |
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Fluids may include: |
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Equipment may include: |
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Operational problems may include: |
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Unit Sector(s)
Drilling (General)
Competency field
Refer to Unit Sector(s).
Co-requisite units
Not applicable.