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Elements and Performance Criteria

1. Plan and prepare for guided boring
   • Access, interpret and apply guided boring documentation and ensure the work activity is compliant
   • Obtain, read, interpret, clarify and confirm work requirements
   • Identify and address potential risks, hazards and environmental issues and implement control measures
   • Select and wear personal protective equipment appropriate for work activities
   • Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
   • Communicate and coordinate activities with others throughout the work activity
2. Bore pilot hole
   • Carry out pre-start and start up procedures
   • Identify, select and apply rig operational controls
   • Fit locating device to drill head and attach drill head to drill stem
   • Align drilling head with survey tool and survey control system
   • Drill pilot hole according to design alignment
   • Monitor drill path ensuring pilot hole meets conformance envelope and dogleg severity is within limits
   • Add drill stem sections as required
   • Steer, and where required, zone steer drill head to achieve required pitch and direction
   • Monitor and interpret all gauge/dial readings
   • Monitor and interpret drill fluid return and drill spoil
   • Monitor and interpret drill head position and pitch
   • Maintain communication with all relevant personnel
   • Maintain drill log and reports as required
3. Complete back reaming, and product pull back
   • Lock out machine
   • Remove drill head
   • Check free rotation of swivel
   • Connect appropriate back reamer, swivel and product
   • Locate product feed to prevent damage and within breakover limitations
   • Check all safety precautions are in place and restart machine
   • Back reaming/pre-ream, and install product, removing drill stem sections
   • Monitor and interpret all gauge/dial readings
   • Monitor and interpret drill fluid flow from both ends of hole
   • Monitor product feed
   • Continually monitor hazards and risks, and ensure safety of self, other personnel, plant and equipment
   • Take required actions to achieve satisfactory product installation as required
   • Maintain drill log and reports as required
4. Respond to problems
   • Identify possible problems in equipment or process
   • Determine problems needing action
   • Determine possible fault causes
   • Rectify problem using appropriate solution within area of responsibility
   • Follow through items initiated until final resolution has occurred
   • Report problems outside area of responsibility to designated person
5. Complete equipment maintenance and housekeeping
   • Carry out shutdown and secure equipment
   • Monitor wear on drill stem, particularly threads
   • Dress damaged threads or replace drill stem as required
   • Check all equipment and hoses
   • Monitor wear on drill heads and reamers and take required action
   • Clean all equipment upon completion of bore, ensuring environmental controls are followed
   • Rotate drill stems in stack
   • Ensure drill fluid is appropriately contained/disposed of
   • Ensure maintenance schedules are followed
   • Ensure housekeeping activities are completed
   • Process records

Performance Evidence

Evidence is required to be collected that demonstrates a candidate’s competency in this unit. Evidence must be relevant to the roles within this sector’s work operations and satisfy all of the requirements of the performance criteria of this unit and include evidence that the candidate:

locates and applies relevant documentation, policies and procedures

implements the requirements, procedures and techniques for the safe, effective and efficient completion of guided boring including:

interpreting geological and survey data

conducting mechanical and manual handling

understanding the metric and imperial units conversion

using mathematical calculations, addition, subtraction, multiplication and division

using a calculator to calculate hole volume

works effectively with others to undertake and complete the conduct of guided bores that meets all of the required outcomes including:

complying with written and verbal reporting requirements and procedures

communicating clearly and concisely with others to receive and clarify work instructions

communicating clearly and concisely with others to resolve coordination requirements prior to commencing and during work activities

demonstrates completion of guided bores that safely, effectively and efficiently meets all of the required outcomes on more than one (1) occasion including:

fitting and locating device to drill head and attaching drill head to drill stem

aligning drill head with survey tool and survey control system

drilling pilot hole according to design alignment

monitoring drill path ensuring pilot hole meets conformance envelope and dogleg severity is within limits

steering, and where required, zone steering drill head to achieve required pitch and direction

monitoring and interpreting all gauge/dial readings

monitoring and interpreting drill head position and pitch

completing back reaming, and product pull back

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Knowledge Evidence

The candidate must demonstrate knowledge of the following when conducting guided boring:

organisation and site requirements and procedures for;

work, health and safety

environmental issues

operating drill rig

housekeeping

worksite coordination requirements and procedures

site operating techniques and systems

systems and alarms requirements and procedures

ground preparation requirements and procedures

inspection, fault finding and reporting requirements and procedures

routine operator servicing, maintenance and housekeeping requirements and procedures

dust suppression techniques

drill system characteristics, technical capability and limitations

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

preparation for fire/accident/emergency

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