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Evidence Guide: RIINHB325A - Construct and complete single aquifer production bores

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

 

RIINHB325A - Construct and complete single aquifer production bores

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

Plan and prepare for single aquifer production bores

  1. Access, interpret and apply compliance documentation relevant to the work activity
  2. 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
  3. Obtain, confirm and apply work instructions for the allocated task
  4. Obtain or sight any licences or permits required under the relevant state/territory legislation or regulation
  5. Identify, manage and report all potential hazards
  6. Resolve coordination requirements with others at the site prior to commencing and during work activities
  7. Communicate regular up to date information on progress, and/or problems encountered to client and/or other relevant parties
  8. Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities
  9. Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence
Access, interpret and apply compliance documentation relevant to the work activity

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Obtain, confirm and apply work instructions for the allocated task

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Obtain or sight any licences or permits required under the relevant state/territory legislation or regulation

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:

 

 

 

 

 

 

 

Communicate regular up to date information on progress, and/or problems encountered to client and/or other relevant parties

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Provide detailed strata logs, pump and development test results conducted during bore development and water and strata samples to the appropriate authorities

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete all requirements for bore completion reports, decommissioning or abandonment and send to regulatory authorities within the time specified on bore licence

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Design production bores for single aquifer systems

  1. Determine most appropriate construction methods from the reading and interpretation of all available documented information
  2. Design the bore to ensure the exclusion of unsuitable surface waters
  3. Select a bore site that will prevent contamination and minimise interference with other bores and adhere to occupational health and safety requirements
  4. Determine a drilling fluid program to suit the expected down hole conditions
  5. Select likely water entry mechanisms from the formation to the bore such as open hole, slotted casing, screens or gravel packs
  6. Calculate appropriate artificial gravel pack design parameters and recommended annular thickness requirements
  7. Plot and interpret formation sieve analysis results onto graphs
  8. Undertake calculations to determine appropriate screen/slot design parameters (i.e. diameter, length, aperture size)
  9. Select appropriate bore/surface casing type, size, strength and wall thickness for the anticipated ground water quality and pressure conditions and any construction requirements
  10. Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase
Determine most appropriate construction methods from the reading and interpretation of all available documented information

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Design the bore to ensure the exclusion of unsuitable surface waters

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select a bore site that will prevent contamination and minimise interference with other bores and adhere to occupational health and safety requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine a drilling fluid program to suit the expected down hole conditions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select likely water entry mechanisms from the formation to the bore such as open hole, slotted casing, screens or gravel packs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate appropriate artificial gravel pack design parameters and recommended annular thickness requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Plot and interpret formation sieve analysis results onto graphs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Undertake calculations to determine appropriate screen/slot design parameters (i.e. diameter, length, aperture size)

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select appropriate bore/surface casing type, size, strength and wall thickness for the anticipated ground water quality and pressure conditions and any construction requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ensure all necessary materials anticipated for the job are available and on site prior to commencement of construction phase

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Construct production bores in single aquifer systems

  1. Use approved procedures to select, slot, assemble, and insert casing and screens suitable for the formations in which they are deployed
  2. Use equipment for assembly and slotting safely and in accordance with approved procedures
  3. 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
  4. Construct bore in accordance with any applicable regulations, minimum construction requirements and organisational procedures
  5. 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
  6. 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
  7. Maintain plumbness and alignment of the hole within the required limitations and perform plumbness tests if required
  8. Collect, store, record, label and transport formation and water samples for mechanical and/or chemical analysis in accordance with licensing or regulatory requirements
  9. Maintain all records accurately and legibly
  10. Accurately calculate hole, annular fill, gravel pack and mud pit volumes in cubic metres or litres
  11. Select appropriate gravel pack or stabilising gravel fill materials
  12. 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
  13. Comply with relevant workplace occupational health and safety requirements for both the drilling equipment and construction materials
  14. Maintain tool string inventories
  15. Identify and protect headworks of the bore
  16. Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns (e.g. flooding), damage and vandalism
  17. Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use
  18. Remove drilled fluids from the bore to allow subsequent development
  19. Dispose of/neutralise wastewater or hazardous materials from site and complete restoration of the bore site and camp facilities
  20. Maintain tool strings and inventories
Use approved procedures to select, slot, assemble, and insert casing and screens suitable for the formations in which they are deployed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Use equipment for assembly and slotting safely and in accordance with approved procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Construct bore in accordance with any applicable regulations, minimum construction requirements and organisational procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain plumbness and alignment of the hole within the required limitations and perform plumbness tests if required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Collect, store, record, label and transport formation and water samples for mechanical and/or chemical analysis in accordance with licensing or regulatory requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain all records accurately and legibly

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Accurately calculate hole, annular fill, gravel pack and mud pit volumes in cubic metres or litres

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select appropriate gravel pack or stabilising gravel fill materials

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Comply with relevant workplace occupational health and safety requirements for both the drilling equipment and construction materials

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain tool string inventories

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify and protect headworks of the bore

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Construct headworks to seal and cap the bore from surface water pollutants, environmental concerns (e.g. flooding), damage and vandalism

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Incorporate methods for measuring static and pumping water levels in headworks and for adequate sealing when not in use

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Remove drilled fluids from the bore to allow subsequent development

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Dispose of/neutralise wastewater or hazardous materials from site and complete restoration of the bore site and camp facilities

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain tool strings and inventories

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Develop bore

  1. Use bore development techniques with care to prevent collapsing of casing or screens
  2. Use development techniques to improve hydraulic transmissivity around the bore
  3. 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
  4. Measure/calculate and record standing and drawdown water levels
  5. Perform pump and development tests to estimate the sand content and sustainable yield of the bore
Use bore development techniques with care to prevent collapsing of casing or screens

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Use development techniques to improve hydraulic transmissivity around the bore

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Measure/calculate and record standing and drawdown water levels

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform pump and development tests to estimate the sand content and sustainable yield of the bore

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Disinfect/decontaminate bore and drilling equipment

  1. Clean and disinfect/decontaminate drilling equipment and tools before working on new sites to comply with relevant standards or regulatory requirements
  2. Disinfect bores and installed equipment constructed for potable supplies using chlorine or proprietary chemical solution or steam cleaning as appropriate
  3. Handle hazardous chemicals in accordance with manufacturer's recommendations/instructions and apply appropriate engineering controls and/or personal protective equipment
  4. Remove and dispose of/neutralise any disinfecting agents from the bore upon completion
Clean and disinfect/decontaminate drilling equipment and tools before working on new sites to comply with relevant standards or regulatory requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Disinfect bores and installed equipment constructed for potable supplies using chlorine or proprietary chemical solution or steam cleaning as appropriate

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Handle hazardous chemicals in accordance with manufacturer's recommendations/instructions and apply appropriate engineering controls and/or personal protective equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Remove and dispose of/neutralise any disinfecting agents from the bore upon completion

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Carry out bore maintenance and rehabilitation

  1. Undertake a process of diagnosis to determine likely cause of bore deterioration
  2. Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition
  3. 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)
Undertake a process of diagnosis to determine likely cause of bore deterioration

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Devise a program of rehabilitation to ensure that the bore is restored to a reasonable condition

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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)

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Decommission test/bore holes

  1. Determine suitable decommissioning procedures and select appropriate materials
  2. Carry out the decommissioning (abandonment) of test holes or bore holes in single aquifer systems
  3. Verify position/location of hole for future reference
  4. Dispose of drill and other fluids safely
Determine suitable decommissioning procedures and select appropriate materials

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Carry out the decommissioning (abandonment) of test holes or bore holes in single aquifer systems

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Verify position/location of hole for future reference

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Dispose of drill and other fluids safely

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 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.

Required Skills and Knowledge

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)

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

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