RIINHB325A - Construct and complete single aquifer production bores Competency Mapping Template
Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners
RIINHB325A Mapping and Delivery Guide Construct and complete single aquifer production bores
Version 1.0 Issue Date: May 2024
Qualification
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Unit of Competency
RIINHB325A - Construct and complete single aquifer production bores
Description
This unit covers the construction of single aquifer production bores in the drilling industry. It includes planning and preparing for single aquifer production bores, designing production bores for single aquifer systems, constructing production bores in single 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 single aquifer production bores
Access, interpret and apply compliance documentation relevant to the work activity
Discuss scope of work with client and give technical advice, cost structure, workmanship warranty, quantity and quality of materials, construction standards and methods to be used and 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 single aquifer systems
Determine most appropriate construction methods from the reading and interpretation of all available documented information
Design the bore to ensure the exclusion of unsuitable surface waters
Select a bore site that will prevent contamination and minimise interference with other bores and adhere to occupational health and safety requirements
Determine a drilling fluid program to suit the expected down hole conditions
Select likely water entry mechanisms from the formation to the bore such as open hole, slotted casing, screens or gravel packs
Select appropriate bore/surface casing type, size, strength and wall thickness 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 single aquifer systems
Use approved procedures to select, slot, assemble, and insert casing and screens suitable for the formations in which they are deployed
Use equipment for assembly and slotting safely and in accordance with approved procedures
Select, mix and place grout or otherwise seal surface casing to whatever depths necessary and with a minimum grout sheath thickness of 20mm to protect bore from surface or shallow subsurface waters that may be contaminated or polluted
Construct bore in accordance with any applicable regulations, minimum construction requirements and organisational procedures
Use and maintain drilling fluids and additives within the manufacturer's recommendations and that are non-toxic and capable of being completely removed from the bore upon completion
Maintain, test and record fluid properties such as viscosity, mid weight, filtration and sand content so that the potential capacity, efficiency and quality of the bore is not affected
Maintain plumbness and alignment of the hole within the required limitations and perform plumbness tests if required
Collect, store, record, label and transport formation and water samples for mechanical and/or chemical analysis in accordance with licensing or regulatory requirements
Maintain all records accurately and legibly
Accurately calculate hole, annular fill, gravel pack and mud pit volumes in cubic metres or litres
Select appropriate gravel pack or stabilising gravel fill materials
Place artificial or stabilising gravel fill if required in a manner that will ensure uniform distribution in the annular space without bridging, voids or segregation
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 (e.g. flooding), damage and vandalism
Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
Remove drilled fluids from the bore to allow subsequent development
Dispose of/neutralise wastewater or hazardous materials from site and complete restoration of the bore site and camp facilities
Maintain tool strings and inventories
Element: Develop bore
Use bore 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 acceptable and practical limits set by site, contractual or regulatory requirements
Measure/calculate and record standing and drawdown water levels
Perform pump and development tests to estimate the sand content and sustainable yield of the bore
Element: Disinfect/decontaminate bore and drilling equipment
Clean and disinfect/decontaminate drilling equipment and tools before working on new sites to comply with relevant standards or regulatory requirements
Disinfect bores and installed equipment constructed for potable supplies using chlorine or proprietary chemical solution or steam cleaning as appropriate
Handle hazardous chemicals in accordance with manufacturer's recommendations/instructions and apply appropriate engineering controls and/or personal protective equipment
Remove and dispose of/neutralise any disinfecting agents from the bore upon completion
Element: Carry out bore maintenance and rehabilitation
Undertake a process of diagnosis 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 and employ engineering controls when handling hazardous cleaning chemicals and follow manufacturer's recommendations suggested in materials safety data sheets (MSDS)
Element: Decommission test/bore holes
Determine suitable decommissioning procedures and select appropriate materials
Carry out the decommissioning (abandonment) of test holes or bore holes in single aquifer systems
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 single aquifer production bores
implementation of requirements, procedures and techniques for the safe, effective and efficient completion of single aquifer production bore construction
working with others to undertake and complete the construction of single aquifer production bores that meets all of the required outcomes
consistent timely completion of single 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 single 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 single aquifer production bores:
apply legislative, organisation and site requirements and procedures
interpret and apply occupational health and safety requirements and procedures
interpret site requirements and procedures
interpret work requirements
interpret geological and survey data
apply aquifer sand sieve analysis tests
calculate the specific capacity of a bore
calculate grout component quantities for small grouting jobs (e.g. plugs)
calculate hole and annular volumes
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 single 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
applications for wire-wound screens
casing requirements, slotting techniques, slot location and orientation
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 1 bore applications
characteristics of 'good samples' required for water well construction
ways in which sampling errors can occur
types of drilling fluids, their selection, use, testing and conditioning
problem solving techniques
grout placement methods and procedures
numerical knowledge 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
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
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 1)
licence for particular drilling method:
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
clients and/or landowners
Documented information may include:
results of test hole
hydrogeological data and reports
geological data
old bore hole logs
results from sieve analysis tests
geophysical logging results
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 for assembling and inserting casing 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
casing cutters, bevellers
welders
threaded pipe lifting sockets
solvents
Bore development techniques may include:
mechanical surging
bailing
chemical methods
jetting
air lift surging and/or pumping
over pumping
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 and give technical advice, cost structure, workmanship warranty, quantity and quality of materials, construction standards and methods to be used and 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
Design the bore to ensure the exclusion of unsuitable surface waters
Select a bore site that will prevent contamination and minimise interference with other bores and adhere to occupational health and safety requirements
Determine a drilling fluid program to suit the expected down hole conditions
Select likely water entry mechanisms from the formation to the bore such as open hole, slotted casing, screens or gravel packs
Select appropriate bore/surface casing type, size, strength and wall thickness 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 select, slot, assemble, and insert casing and screens suitable for the formations in which they are deployed
Use equipment for assembly and slotting safely and in accordance with approved procedures
Select, mix and place grout or otherwise seal surface casing to whatever depths necessary and with a minimum grout sheath thickness of 20mm to protect bore from surface or shallow subsurface waters that may be contaminated or polluted
Construct bore in accordance with any applicable regulations, minimum construction requirements and organisational procedures
Use and maintain drilling fluids and additives within the manufacturer's recommendations and that are non-toxic and capable of being completely removed from the bore upon completion
Maintain, test and record fluid properties such as viscosity, mid weight, filtration and sand content so that the potential capacity, efficiency and quality of the bore is not affected
Maintain plumbness and alignment of the hole within the required limitations and perform plumbness tests if required
Collect, store, record, label and transport formation and water samples for mechanical and/or chemical analysis in accordance with licensing or regulatory requirements
Maintain all records accurately and legibly
Accurately calculate hole, annular fill, gravel pack and mud pit volumes in cubic metres or litres
Select appropriate gravel pack or stabilising gravel fill materials
Place artificial or stabilising gravel fill if required in a manner that will ensure uniform distribution in the annular space without bridging, voids or segregation
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 (e.g. flooding), damage and vandalism
Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
Remove drilled fluids from the bore to allow subsequent development
Dispose of/neutralise wastewater or hazardous materials from site and complete restoration of the bore site and camp facilities
Maintain tool strings and inventories
Use bore 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 acceptable and practical limits set by site, contractual or regulatory requirements
Measure/calculate and record standing and drawdown water levels
Perform pump and development tests to estimate the sand content and sustainable yield of the bore
Clean and disinfect/decontaminate drilling equipment and tools before working on new sites to comply with relevant standards or regulatory requirements
Disinfect bores and installed equipment constructed for potable supplies using chlorine or proprietary chemical solution or steam cleaning as appropriate
Handle hazardous chemicals in accordance with manufacturer's recommendations/instructions and apply appropriate engineering controls and/or personal protective equipment
Remove and dispose of/neutralise any disinfecting agents from the bore upon completion
Undertake a process of diagnosis 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 and employ engineering controls when handling hazardous cleaning chemicals and follow manufacturer's recommendations suggested in materials safety data sheets (MSDS)
Determine suitable decommissioning procedures and select appropriate materials
Carry out the decommissioning (abandonment) of test holes or bore holes in single aquifer systems
Verify position/location of hole for future reference
Dispose of drill and other fluids safely
Forms
Assessment Cover Sheet
RIINHB325A - Construct and complete single 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
RIINHB325A - Construct and complete single 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