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Elements and Performance Criteria

1. Plan and prepare for installation of de-watering conduit and gas drainage equipment
   • Access, interpret and apply de-watering conduit and gas drainage equipment documentation and 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
   • Communicate and coordinate activities with others throughout the work activity
   • Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
   • Prepare the de-watering conduit installation plan in consultation with the site gas drainage official and in accordance with appropriate site management plans
2. Install de-watering conduit and monitor water drainage
   • Carry out any pre-start and start up procedures
   • Identify, select and apply rig operational controls
   • Insert hollow rods into the hole
   • Attach non-return valve and anchor onto the de-watering conduit
   • Perforate the conduit at the appropriate locations to allow ingress of water
   • Install the de-watering conduit into hollow rod to the required distance
   • Identify and remedy operational problems
   • Remove hollow rods leaving conduit in place
   • Connect conduit to de-watering system and commence removing water via the water trap
   • Empty water trap
   • Disconnect de-watering equipment from the de-watering conduit when all water has been removed
   • Monitor, record and interpret all pressure and flow readings
   • Continually monitor hazards and risks , and ensure safety of self, other personnel, plant and equipment
3. Connect gas drainage equipment and monitor gas drainage
   • Select and install appropriate gas drainage equipment
   • Select and use appropriate measuring equipment to monitor gas drainage
   • Correctly identify and tag gas drainage and monitoring units identifying the number, length and diameter of the hole
4. Complete equipment maintenance and housekeeping
   • Carry out any shutdown and securing of equipment
   • Ensure that the drill rods are inspected for wear and damage, threads dressed and greased, and rods are replace as required
   • Monitor all drill equipment and hoses and ancillary equipment and carryout remedial action
   • Ensure all drilling equipment is cleaned and maintained
   • Ensure housekeeping activities are completed
   • Process records
5. Plan and prepare for installation of de-watering conduit and gas drainage equipment
   • Access, interpret and apply de-watering conduit and gas drainage equipment documentation and 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
   • Communicate and coordinate activities with others throughout the work activity
   • Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
   • Prepare the de-watering conduit installation plan in consultation with the site gas drainage official and in accordance with appropriate site management plans
6. Install de-watering conduit and monitor water drainage
   • Carry out any pre-start and start up procedures
   • Identify, select and apply rig operational controls
   • Insert hollow rods into the hole
   • Attach non-return valve and anchor onto the de-watering conduit
   • Perforate the conduit at the appropriate locations to allow ingress of water
   • Install the de-watering conduit into hollow rod to the required distance
   • Identify and remedy operational problems
   • Remove hollow rods leaving conduit in place
   • Connect conduit to de-watering system and commence removing water via the water trap
   • Empty water trap
   • Disconnect de-watering equipment from the de-watering conduit when all water has been removed
   • Monitor, record and interpret all pressure and flow readings
   • Continually monitor hazards and risks , and ensure safety of self, other personnel, plant and equipment
7. Connect gas drainage equipment and monitor gas drainage
   • Select and install appropriate gas drainage equipment
   • Select and use appropriate measuring equipment to monitor gas drainage
   • Correctly identify and tag gas drainage and monitoring units identifying the number, length and diameter of the hole
8. Complete equipment maintenance and housekeeping
   • Carry out any shutdown and securing of equipment
   • Ensure that the drill rods are inspected for wear and damage, threads dressed and greased, and rods are replace as required
   • Monitor all drill equipment and hoses and ancillary equipment and carryout remedial action
   • Ensure all drilling equipment is cleaned and maintained
   • 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 the installation of de-watering conduit and gas drainage equipment including:

applying planning skills

complying with safe manual handling practices

conducting site inspection and monitoring

conducting equipment maintenance

reading, interpreting and applying drill plans

operating ancillary equipment

works effectively with others to undertake and complete the installation of de-watering conduit and gas drainage equipment 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 the installation of de-watering conduit and gas drainage equipment that safely, effectively and efficiently meets all of the required outcomes on more than one (1) occasion including:

installing the de-watering conduit into hollow rod to the required distance

removing hollow rods leaving conduit in place

connecting and disconnecting conduit to de-watering system and removing water via the water trap

monitoring, recording and interpreting all pressure and flow readings

selecting and installing appropriate gas drainage equipment

measuring and monitoring gas drainage

identifying and tagging gas drainage and monitoring units

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Knowledge Evidence

The candidate must demonstrate knowledge installing de-watering conduit and gas drainage equipment through:

accessing, interpreting and applying the organisation and site requirements and procedures for

work, health and safety

environmental issues

operating drill rig

housekeeping

potential underground directional drilling hazards

the potential de-watering and gas drainage operations hazards

principles of de-watering drill holes and gas drainage

the manufacturer’s requirements and procedures

the specific handling requirements for dewatering and gas drainage equipment

importance and functions of the standpipe

being prepared for fire/accident/emergency

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