Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

RIINHB322A Mapping and Delivery Guide
Construct multiple aquifer production bores

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency RIINHB322A - Construct multiple aquifer production bores
Description This unit covers the construction of multiple aquifer production bores in the drilling industry. It includes planning and preparing for multiple aquifer production bores, designing production bores for multiple aquifer systems, constructing production bores in multiple aquifer systems, developing bores, disinfecting/decontaminating bore and drilling equipment, carrying out bore maintenance and rehabilitation, and decommissioning test/bore holes. Licensing, legislative, regulatory and certification requirements that apply to this unit can vary between states, territories, and industry sectors. Relevant information must be sourced prior to application of the unit.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application This unit is appropriate for those working in an operational role at worksites within:Drilling
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites Not applicable. Not applicable.
Competency Field Refer to Unit Sector(s).
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Plan and prepare for multiple aquifer production bores
  • Access, interpret and apply compliance documentation relevant to the work activity
  • Discuss scope of work with client to gain general agreement on drilling plan
  • Obtain, confirm and apply work instructions for the allocated task
  • Obtain or sight any licences or permits required under the relevant State/Territory legislation or regulation.
  • Identify, manage and report all potential hazards
  • Resolve coordination requirements with others at the site prior to commencing and during work activities
  • Communicate regular up to date information on progress, and/or problems encountered to client and/or other relevant parties
  • Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
  • Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
       
Element: Design production bores for multiple aquifer systems
  • Determine most appropriate construction methods from the reading and interpretation of all available documented information and ensure relevant procedures and standards are adhered to
  • Design the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels
  • Select a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards
  • Select likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs
  • Calculate appropriate artificial pack design parameters and recommended annular thicknesses required
  • Undertake calculations to determine appropriate screen design parameters (e.g. diameter, length, aperture size)
  • Plot and interpret sieve analysis results onto graphs
  • Select appropriate bore/surface casing for the anticipated ground/water quality and pressure conditions and any construction requirements
  • Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase
       
Element: Construct production bores in multiple aquifer systems
  • Use approved procedures to assemble and insert casing and screens
  • Use equipment for assembly safely and in accordance with approved procedures
  • Grout or otherwise seal surface casing
  • Conduct grouting operations to seal intermediate and/or production casing strings or to seal selected zones
  • Construct bore in accordance with any applicable regulations, minimum construction and organisational requirements
  • Maintain plumbness and alignment of the hole within the required limitations
  • Collect, record and label formation and water samples
  • Maintain records accurately and legibly
  • Accurately calculate hole, annular, fill or pack materials and mud pit volumes in cubic metres or litres
  • Select and place stabilising gravel fill as required
  • Determine appropriate artificial pack material grain size
  • Place artificial pack material in a manner that will ensure uniform distribution in the annular space without bridging
  • Comply with relevant workplace occupational health and safety requirements for both the drilling equipment and construction materials
  • Maintain tool string inventories
  • Identify and protect headworks of the bore
  • Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns and damage
  • Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
  • Dispose of wastewater or hazardous materials from site and complete restoration of the bore site
       
Element: Develop bore
  • Use development techniques with care to prevent collapsing of casing or screens
  • Use development techniques to improve hydraulic transmissivity around the bore
  • Undertake development until a continuous, clean supply of water is obtained, in accordance with site, contractual or regulatory requirements
  • Measure/calculate and record standing and drawdown water levels
  • Perform tests to estimate the sustainable yield of the bore
       
Element: Disinfect/decontaminate bore and drilling equipment
  • Disinfect/decontaminate to comply with relevant standards or regulatory requirements
  • Handle hazardous chemicals in accordance with manufacturer's recommendations and any relevant legislative/regulatory requirements
       
Element: Carry out bore maintenance and rehabilitation
  • Research all aspects of the bore construction and history
  • Undertake a process of diagnosis by testing and measurement to determine likely cause of bore deterioration
  • Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition
  • Wear appropriate/recommended personal protective equipment when handling hazardous cleaning chemicals and follow manufacturer's recommendations
       
Element: Decommission test/bore holes
  • Determine suitable decommissioning procedures and select appropriate sealing materials and placement methods
  • Carry out the decommissioning (abandonment) of test holes or bore holes in single and multiple aquifer systems
  • Seal bore with surface caps and cover borecap with 300mm local soil
  • Verify position/location of hole for future reference
  • Dispose of drill and other fluids safely
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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 constructing multiple aquifer production bores

implementation of requirements, procedures and techniques for the safe, effective and efficient completion of multiple aquifer production bore construction

working with others to undertake and complete the construction of multiple aquifer production bores that meets all of the required outcomes

consistent timely completion of multiple aquifer production bore construction 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.

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

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.

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

consistent achievement of required outcomes

first hand testimonial evidence of the candidate's:

working with others to undertake and complete the construction of multiple aquifer production bores

Guidance information for assessment

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

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Required skills

Specific skills are required to achieve the Performance Criteria of this unit, particularly for its application in the various circumstances in which this unit may be used. This includes the ability to carry out the following, as required to construct multiple aquifer production bores:

apply legislative, organisation and site requirements and procedures for constructing multiple aquifer production bores

perform aquifer sand sieve analysis tests

calculate the specific capacity of a bore

calculate grout component quantities, i.e. cement powder, water and other additives as required

calculate hole and annular volumes

calculate grout/mud specific gravity

determine grain size and selection of appropriate artificial pack material

Required knowledge

Specific knowledge is required to achieve the Performance Criteria of this unit, particularly for its application in the various circumstances in which this unit may be used. This includes knowledge of the following, as required to construct multiple aquifer production bores:

equipment characteristics, technical capabilities and limitations

legal requirements under the relevant State/Territory Water Act

basic geological formations, i.e. basic knowledge of both soil and rock classifications and various formations which permit groundwater movement and factors affecting groundwater quality for aquifer systems, including drillability and stability

potential safety hazards and sources of contamination when siting a bore

the necessity of having a signed agreement/contract with the client

requirements for water sampling for laboratory testing

tests for alignment and plumbness of bores

appropriate casing materials for various applications

hole preparation for cementing (grouting) operations

effects of various cement (grout) additives

pressure cementing methods

casing collapse characteristics

applications for wire-wound screens

screen design parameters to ensure appropriate entrance velocities

interpretation of sieve analysis results

applications for natural pack, stabilising fill and artificial pack completion techniques

objectives of bore development

test pumping procedures

appropriate disinfecting chemicals and procedures

appropriate headworks design for Class 2 bore applications

characteristics of 'good samples' required for water well construction

ways in which sampling errors can occur

types of drilling fluids

problem solving techniques

grout placement methods and procedures

range of numerical calculations to calculate:

volume (e.g. mud pits, drums, tanks or bore holes of given dimensions, annulus)

up hole velocity

cement/water/additives quantities

screen design parameters

flow rates (e.g. L/sec, GPM)

conversion from imperial to metric and vice versa

conducting a sieve analysis

relevant occupational health and safety requirements including principles of Duty of Care

appropriate fishing operations for the type(s) of drilling being undertaken

use of materials safety data sheets (MSDS)

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

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

achieved targets

operational conditions

obtaining of required permits

site layout

out of bounds areas

worksite inspection requirements

lighting conditions

plant of equipment defects

coordination requirements or issues

contamination control requirements

environmental control requirements

barricade and signage requirements

Licenses or permits may include:

Water Well Licence (Class 2)

licence for particular drilling method (e.g. cable tool, auger, rotary air, rotary mud)

bore construction permit

bore development/works approval

Hazards may include:

working in proximity to drilling rig

Coordination requirements may include:

other equipment operators

maintenance personnel

supervisors

site personnel

Construction methods may include:

mechanical surging

bailing

chemical

jetting

air lift

over pumping

Documented information may include:

results of test hole

hydrogeological data and reports

geological data

old bore hole logs

results from sieve analysis tests

geophysical logs

physical samples

results of mechanical testing of soils

water test analyses

interpretation of soft/hard zones

losses of drilling fluid

bore log and in hole test results/measurements

records of nearby bores

geological maps

Procedures and standards may include:

Australian standards (e.g. AS 2368 - Test Pumping Water Bores)

ARMCANZ "Minimum Construction Requirements for Water Bores in Australia" July 1997

Procedures to assemble and insert casing and screens may include:

solvent cement (PVC)

stainless steel screws (PVC)

welding (steel)

threaded (PVC, FRP, ABS)

locking strip or wire rope

Equipment may include:

hand tools

power driven (electric, hydraulic or air) hand tools

welders

solvents

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Access, interpret and apply compliance documentation relevant to the work activity 
Discuss scope of work with client to gain general agreement on drilling plan 
Obtain, confirm and apply work instructions for the allocated task 
Obtain or sight any licences or permits required under the relevant State/Territory legislation or regulation. 
Identify, manage and report all potential hazards 
Resolve coordination requirements with others at the site prior to commencing and during work activities 
Communicate regular up to date information on progress, and/or problems encountered to client and/or other relevant parties 
Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities 
Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence 
Determine most appropriate construction methods from the reading and interpretation of all available documented information and ensure relevant procedures and standards are adhered to 
Design the bore to ensure the exclusion of unsuitable waters and to prevent the inter-mixing of aquifers with different water quality or Standing Water Levels 
Select a bore site that will prevent contamination and minimise interference with other bores and that is safe with respect to potential occupational health and safety hazards 
Select likely water entry mechanism from the formation to the bore such as open hole, slotted casing screens, gravel packs 
Calculate appropriate artificial pack design parameters and recommended annular thicknesses required 
Undertake calculations to determine appropriate screen design parameters (e.g. diameter, length, aperture size) 
Plot and interpret sieve analysis results onto graphs 
Select appropriate bore/surface casing for the anticipated ground/water quality and pressure conditions and any construction requirements 
Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase 
Use approved procedures to assemble and insert casing and screens 
Use equipment for assembly safely and in accordance with approved procedures 
Grout or otherwise seal surface casing 
Conduct grouting operations to seal intermediate and/or production casing strings or to seal selected zones 
Construct bore in accordance with any applicable regulations, minimum construction and organisational requirements 
Maintain plumbness and alignment of the hole within the required limitations 
Collect, record and label formation and water samples 
Maintain records accurately and legibly 
Accurately calculate hole, annular, fill or pack materials and mud pit volumes in cubic metres or litres 
Select and place stabilising gravel fill as required 
Determine appropriate artificial pack material grain size 
Place artificial pack material in a manner that will ensure uniform distribution in the annular space without bridging 
Comply with relevant workplace occupational health and safety requirements for both the drilling equipment and construction materials 
Maintain tool string inventories 
Identify and protect headworks of the bore 
Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns and damage 
Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use 
Dispose of wastewater or hazardous materials from site and complete restoration of the bore site 
Use development techniques with care to prevent collapsing of casing or screens 
Use development techniques to improve hydraulic transmissivity around the bore 
Undertake development until a continuous, clean supply of water is obtained, in accordance with site, contractual or regulatory requirements 
Measure/calculate and record standing and drawdown water levels 
Perform tests to estimate the sustainable yield of the bore 
Disinfect/decontaminate to comply with relevant standards or regulatory requirements 
Handle hazardous chemicals in accordance with manufacturer's recommendations and any relevant legislative/regulatory requirements 
Research all aspects of the bore construction and history 
Undertake a process of diagnosis by testing and measurement to determine likely cause of bore deterioration 
Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition 
Wear appropriate/recommended personal protective equipment when handling hazardous cleaning chemicals and follow manufacturer's recommendations 
Determine suitable decommissioning procedures and select appropriate sealing materials and placement methods 
Carry out the decommissioning (abandonment) of test holes or bore holes in single and multiple aquifer systems 
Seal bore with surface caps and cover borecap with 300mm local soil 
Verify position/location of hole for future reference 
Dispose of drill and other fluids safely 

Forms

Assessment Cover Sheet

RIINHB322A - Construct multiple aquifer production bores
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

RIINHB322A - Construct multiple aquifer production bores

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: