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Evidence Guide: RIINHB304B - Conduct air drilling

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

 

RIINHB304B - Conduct air drilling

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

Plan and prepare to conduct air drilling

  1. Access, interpret and apply compliance documentation relevant to the work activity
  2. Obtain, confirm and apply work instructions for the allocated task
  3. Identify, manage and report all potential hazards
  4. Resolve coordination requirements with others at the site prior to commencing and during work activities
Access, interpret and apply compliance documentation relevant to the work activity

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Obtain, confirm and apply work instructions for the allocated task

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify, manage and report all potential hazards

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Resolve coordination requirements with others at the site prior to commencing and during work activities

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect and maintain air drilling equipment

  1. Ensure restraining devices are not damaged or worn and are correctly fitted
  2. Fit or replace restraining devices in accordance with procedures
  3. Inspect and maintain the cyclone in safe and serviceable condition
  4. Ensure mounting and security of cyclone is adequate for safe operation, particularly when down hole water may result in release of energy
  5. Maintain dust suppression systems to ensure minimal emission of airborne dust and integrity of sample quality
  6. Inspect pressure relief valves to ensure they have not been tampered with
Ensure restraining devices are not damaged or worn and are correctly fitted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fit or replace restraining devices in accordance with procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect and maintain the cyclone in safe and serviceable condition

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ensure mounting and security of cyclone is adequate for safe operation, particularly when down hole water may result in release of energy

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain dust suppression systems to ensure minimal emission of airborne dust and integrity of sample quality

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect pressure relief valves to ensure they have not been tampered with

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Drill using air drilling methods

  1. Select and use appropriate drill rod and drill string components given hole specification and anticipated ground conditions
  2. Operate make-up and break-out equipment
  3. Select and use appropriate type and size of in-hole tools given hole specification and anticipated ground conditions
  4. Drill/open-up hole collar as required to suit given ground conditions and hole specification
  5. Install drill hole collar casing and seal at the hole collar
  6. Install outside hole return collar device, if required, given hole specification of open or reverse circulation drill hole
  7. Operate and/or supervise the safe operation of drill rod and pipe handling equipment
  8. Add and remove drill rods or casing and other in-hole equipment
  9. Monitor and adjust air pressure and other drilling parameters to achieve maximum performance
  10. Monitor and control down hole water conditions to ensure integrity of the hole, drill cuttings and sample quality
  11. Monitor and safely control discharge from outside hole return collar device as required
  12. Calculate depth of hole
Select and use appropriate drill rod and drill string components given hole specification and anticipated ground conditions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operate make-up and break-out equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select and use appropriate type and size of in-hole tools given hole specification and anticipated ground conditions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Drill/open-up hole collar as required to suit given ground conditions and hole specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install drill hole collar casing and seal at the hole collar

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install outside hole return collar device, if required, given hole specification of open or reverse circulation drill hole

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operate and/or supervise the safe operation of drill rod and pipe handling equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Add and remove drill rods or casing and other in-hole equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and adjust air pressure and other drilling parameters to achieve maximum performance

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and control down hole water conditions to ensure integrity of the hole, drill cuttings and sample quality

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and safely control discharge from outside hole return collar device as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate depth of hole

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select and use drilling additives

  1. Identify ground conditions requiring the use of drilling additives
  2. Select appropriate drilling additives to suit ground conditions
  3. Prepare and/or supervise the preparation of required drilling additives
  4. Use drilling additives to achieve required results
Identify ground conditions requiring the use of drilling additives

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select appropriate drilling additives to suit ground conditions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare and/or supervise the preparation of required drilling additives

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Use drilling additives to achieve required results

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Take samples

  1. Select and check sample devices to ensure client sample quantity and quality specifications are met
  2. Clean or supervise the cleaning of sample devices
  3. Monitor splitting, bagging, presentation, and marking of samples to ensure client specifications are met
  4. Identify and promptly rectify sample blockages affecting or having the potential to affect sample quality
  5. Clear sample delivery hose blockages safely
  6. Clear outside return hole blockages of collared holes as required
  7. Supervise drill crew to ensure all sampling tasks are carried out correctly and safely
Select and check sample devices to ensure client sample quantity and quality specifications are met

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Clean or supervise the cleaning of sample devices

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor splitting, bagging, presentation, and marking of samples to ensure client specifications are met

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify and promptly rectify sample blockages affecting or having the potential to affect sample quality

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Clear sample delivery hose blockages safely

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Clear outside return hole blockages of collared holes as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Supervise drill crew to ensure all sampling tasks are carried out correctly and safely

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain equipment

  1. Supervise the use of specified personal protective equipment when using grinders or bit sharpening equipment
  2. Supervise the selection and correct fitting grinding disks, wheels and stones in accordance with site specifications
  3. Monitor wear of in-hole tools
  4. Check, maintain, and/or replace compressed air hoses and hose fittings or clamps
  5. Supervise the correct sharpening and maintenance of in-hole tools
  6. Inspect, dismantle, replace worn or damaged components and reassemble in-hole equipment
Supervise the use of specified personal protective equipment when using grinders or bit sharpening equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Supervise the selection and correct fitting grinding disks, wheels and stones in accordance with site specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor wear of in-hole tools

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check, maintain, and/or replace compressed air hoses and hose fittings or clamps

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Supervise the correct sharpening and maintenance of in-hole tools

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect, dismantle, replace worn or damaged components and reassemble in-hole equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Respond to problems

  1. Monitor drill cuttings or sample quality, quantity and air return
  2. Identify possible problems in equipment or process
  3. Determine possible cause(s) of problems
  4. Rectify problem(s) using appropriate solution within area of responsibility
  5. Follow through items initiated until final resolution has occurred
  6. Report problems outside area of responsibility to designated person
Monitor drill cuttings or sample quality, quantity and air return

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify possible problems in equipment or process

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine possible cause(s) of problems

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Rectify problem(s) using appropriate solution within area of responsibility

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Follow through items initiated until final resolution has occurred

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Report problems outside area of responsibility to designated person

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

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.

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 air drilling

implementation of requirements, procedures and techniques for the safe, effective and efficient completion of air drilling

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

consistent timely completion of air drilling tasks 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 air drilling tasks

Guidance information for assessment

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

Required Skills and Knowledge

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 air drilling:

apply legislative, organisation and site requirements and procedures

apply prescribed thread form torque parameters during make-up of down hole equipment and consumables

apply correct internal and external callipers, vernier, rule and or tape measure for identification of drill pipe/rod diameter wear limits, measurement of bits/shrouds and other down hole equipment

apply correct measurement of drill string length

apply methods for calculating hole depth

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 air drilling:

the importance to match like threads with like threads on all threaded components and make up torque requirements applicable to thread form in use

the relationship between pressure, volume, hole diameter, pipe diameter and calculation of up hole velocity

drill pipe and rod and thread form wear limit parameters

the need for correct hole collaring, use of casing and collar sealing techniques

TC bit sharpening procedures

potential problems related to inaccurate measurement and usage sequence of ground engaging consumables and related down hole components

hazard control measures to enable safe use of compressed air

the importance of monitoring sample quantity

the role that drill cuttings blockages play in affecting sample quality

safe procedures to clear down and up hole drill cuttings blockages within the outside hole return, down hole equipment and up hole sample system and/or hose

the critical need for correct fitting inspection and maintenance replacement of restraining devices

the hazards associated with the collection of high velocity drilling cuttings

the reason for checking inner tubes and inner tube sealing devices in RC drill pipe

hazards associated with wire-line operations and applicable control measures

identification of various thread forms used in air drilling

identification of various in-hole tools and correct application given ground conditions

the need for uncontaminated samples

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.

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 may include:

lack of preventative maintenance causing rupture of air delivery and sample delivery hoses

damaged/worn clean air and sample hoses

inadequate airborne dust prevention control measures

incorrect match of hose size to hose tails/clamps and fittings

incorrect fitting of clean air or sample hoses

high abrasive wear rates to drill cutting receival equipment

incorrectly fitted hose restraint devices

incorrect hose restraints in use

incorrect or inadequately secured cyclones and cyclone lids

incorrectly fitted grinding wheels, stones and disks

inappropriate methods/procedures for clearing sample hose blockages

insecure sample deflection devices fitted to the drill head

incorrect fitting of wire to wire-line winch drum

wireline snags and overruns

lack of provision of restraint devices to clean air, sample hoses and drill head sample deflection devices

incorrectly fitted stuffing boxes and T pieces

excessive drill pipe and drill string component wear

unguarded or uncontrolled access to pinch points, i.e. hydraulic make-up and break-out devices

poor triangulation configuration of rod/pipe hoisting equipment for angle of hole

excessive wear to hook and clamshell assemblies

lack of provision of handling equipment for movement of sample bags and heavy up and down hole equipment

poor ergonomic equipment design for tasks such as sample splitting, bagging and movement

inappropriate storage/racking of drill pipe

incorrect use of stilsons

incorrect mixing procedure and application of urethane forms

inadequate security of outside hole collar devices

drill cuttings blockages (down and up hole)

Coordination requirements may include:

drill team

other equipment operators

maintenance personnel

supervisors

worksite personnel

Restraining devices shall include:

two leg stocking type whipchecks

correctly rated shackles

correctly rated and fitted whipcheck anchor points

Restraining devices may also include:

wire rope sling type whipchecks

internal hose wire type whipchecks

hose restraint brackets and clamps

Safe and serviceable condition will be:

free from excessive leaks and excessive wear to internal wear resistant materials

chimney correctly positioned in the cyclone vortex zone to best eliminate dust emission

Make up and break out equipment may include:

stilsons

hydraulic pipe tongs

hydraulic pipe wrenches

hydraulic pipe/rod spinners

hydraulic make/break devices

make up torque requirements

bit break out plates

In-hole equipment may include:

drill rods and drill pipe including:

aircore rods with inner-tubes (may use IF or API threads)

conventional drill pipe (API Reg or API IF threads)

reverse circulation drill pipe (e.g. Remet, Metzke, Drillstar)

drill pipe thread type subs, saver subs, blow up/down subs, dig-out subs and cross-overs (API and IF threads)

floating/fixed inner tubes

inner-tube sealing devices such as aircore inner tube ferrules or RC inner-tube 'O' rings

aircore trumpets and trumpet subs

Drill hole collar casing may include:

steel casing

PVC casing

poly pipe (to maintain open blast hole collar)

Outside hole return collar devices may include:

stuffing boxes and T pieces for conventional open hole drilling, including RAB, hammer or combined RAB hammer

stuffing boxes and T pieces for reverse circulation drilling

discharge restraint devices as required

stuffing boxes and T pieces for discharge directed to sump or cyclone

Drill rod and pipe handling equipment may include:

manual handling

hook and clamshell

hoist plug

automated and semi-automated rod handlers

hydraulic pipe/rod/casing clamps

hydraulic pipe/rod/casing spinner

drill rod/pipe clamps

rod/pipe spanner

slips

slips basket

Drill bits may include:

blade bits

PCD bits

tri-cone bits

button bits (conventional and RC)

aircore bits

Drilling parameters may include:

rotation speed

weight on bit

penetration rate

Drilling additives may include:

drilling mud (e.g. polymers)

foams

cement and cement additives

hole collar sealants:

2 part urethane foam, and/or

gypsum cement

Personal protective equipment includes:

steel-capped boots and hardhat

gloves

dust mask

eye and hearing protection

general protective and reflective clothing