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

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:

apply legislative, organisation and site requirements and procedures for the conducting of large diameter auger drilling

apply occupational health and safety requirements and procedures

apply techniques for rig carrier to positioning and movement between holes, and reaching several holes from the one set up position where turntable or boom deployment of rotary head is used

apply rig stabilisation and levelling techniques

identify components for various auger techniques and sizes

apply equipment assembly, inspection and servicing procedures

apply rig operating functions and controls with safety

apply water levels recording procedures

apply grout mixing techniques and placement application methods

apply mechanical and manual handling safety requirements and procedures

apply metric and imperial units conversion

apply mathematical calculations using addition, subtraction, multiplication and division

use a calculator to calculate hole volume

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:

occupational health and safety responsibilities

environmental protection measures and aspects

basic geological formations expected and their properties

equipment and spares identification and characteristics

technical capabilities, system limitations, gauge readings and their interpretation

site hazards identification, assessment and control measures requirements and procedures

operational maintenance procedures for rig and equipment including pre-start checks

use of diagrams, plans and instructions for positioning, recording work or progress

use of tape measures and devices for assessing depth drilled

use of water, mud and foam injection for jet auger drilling and/or screw pipe drilling

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.

Overview of assessment

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:

knowledge of the requirements, procedures and instructions for conducting of large diameter auger drilling

implementation of requirements, procedures and techniques for the safe, effective and efficient completion of large diameter auger drilling tasks

working with others to undertake and complete the large diameter auger drilling tasks that meets all of the required outcomes

consistent timely completion of large diameter auger drilling that safely, effectively and efficiently meets the required outcomes

Context of and specific resources for assessment

This unit must be assessed in the context of the work environment. Where personal safety or environmental damage are limiting factors, assessment may occur in a simulated environment provided it is realistic and sufficiently rigorous to cover all aspects of workplace performance, including task skills, task management skills, contingency management skills and job role environment skills.

The assessment environment should not disadvantage the participant. For example, language, literacy and numeracy demands of assessment should not be greater than those required on the job.

Customisation of assessment and delivery environment to sensitively accommodate cultural diversity.

Aboriginal people and other people from a non English speaking background may have second language issues.

Assessment of this competency requires typical resources normally used in the work environment. Selection and use of resources for particular worksites may differ due to site circumstances.

Where applicable, physical resources should include equipment modified for people with disabilities.

Access must be provided to appropriate learning and/or assessment support when required.

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:

written and/or oral assessment of the candidate's required knowledge

observed, documented and/or first hand testimonial evidence of the candidate's:

implementation of appropriate requirement, procedures and techniques for the safe, effective and efficient achievement of required outcomes

consistently achieving the required outcomes

first hand testimonial evidence of the candidate's:

working with others to undertake and complete large diameter auger drilling tasks

Guidance information for assessment

Consult the SkillsDMC User Guide for further information on assessment including access and equity issues.

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.

Relevant compliance documentation

may include:

legislative, organisational and site requirements and procedures

manufacturer's guidelines and specifications

Australian standards

code of practice

Employment and workplace relations legislation

Equal Employment Opportunity and Disability Discrimination legislation

Work instructions may come from:

briefings, handovers, plans and work orders and may be written or verbal, formal or informal and may include:

nature and scope of tasks

specifications

quality of finished works

achievement targets

operational conditions

obtaining of permits required

site layout

out of bounds areas

worksite inspection requirements

lighting conditions

plant or equipment defects

hazards and potential hazards

coordination requirements or issues

contamination control requirements

environmental control requirements

barricade and signage requirements

Hazards include:

underground services and other hazards

overhead utilities (e.g. electricity)

Hazard management includes:

appropriate personal protective equipment

following safe working practices

Coordination requirements may include

drill team

other equipment operators

maintenance personnel

supervisors

worksite personnel

Personal protective equipment includes:

steel-capped boots and hardhat

gloves

dust mask

eye and hearing protection

general protective and reflective clothing

Fluids may include:

water, mud foam used to assist cutting removal in screw pile or jet auger applications

Equipment may include:

short flight augers with a range of spirals

jet augers and long screw pile augers

bucket augers

belling or under-reaming tools (pier hole)

auger recovery tools

Operational problems may include:

straighten holes and starting straight holes

encountering excessive water

cork screwing effect when hold back not set properly

balancing bit cutting action with hole clearing action

occupational health and safety issues relating to rotating plant including catching long hair, loose clothing, finger injuries, safety with lifting and carrying

obstructions in hole

proximity to embankments