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 grouting or cementing operations in the drilling industry

implementation of requirements, procedures and techniques for the safe, effective and efficient completion of grouting or cementing operations in the drilling industry

working with others to undertake and complete the grouting or cementing operations that meet all of the required outcomes

consistent timely completion of grouting or cementing operations that safely, effectively and efficiently meet 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 grouting or cementing operations in the drilling industry

Guidance information for assessment

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

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 grouting or cementing operations in the drilling industry:

apply legislative, organisation and site requirements and procedures

apply communication procedures

use mixing equipment

measure tank dimensions and calculate volumes

calculate specific gravity of mixtures and hydrostatic pressures including pressure differences between anulus and inside of casing

record casing lengths and quantities accurately

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 grouting or cementing operations in the drilling industry:

site and equipment safety requirements

possible effects of grout, cement or cement additives on health

environmental requirements and procedures

team roles and objectives during the grouting or cementing operations

properties of grout, cement or cement additives

safe work procedure for the grouting or cementing process

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, organisation and site requirements and procedures

manufacturer's guidelines and specifications

Australian standards

code of practice

Employment and workplace relations legislation

Equal Employment Opportunity, Disability Discrimination legislation

Grouting or cementing application may include:

securing casing for a production bore (gas, water or hydrothermal)

stabilising walls of drill hole

installing surface casing or standpipe

hole abandonment procedures

blocking sections of the hole

Grouting or cementing techniques may include:

pressure grouting or cementing

tremie method of placement

placing gout or cement using in socks or sausages

pouring grout or cement down hole

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

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:

spread of contaminants as a result of the grouting or cementing process or cleaning processes

working in proximity to drilling rig

string makeup and breakout hazards

hazardous chemicals

Coordination requirements may include:

driller's assistants

other equipment operators

supervisors

mine or client personnel

Personal protective equipment includes:

steel-capped boots and hardhat

gloves

dust mask

eye and hearing protection

general protective and reflective clothing

Calculations and measurements may include:

diameters casing, hole

casing volumes

casing quantities and length

hole volumes

tank volumes

annular volumes

component volumes for grouting or cementing

hydrostatic pressures

specific gravity of grout or cement

Operational problems may include:

loss of grout or cement through walls of hole

casing fracturing or collapsing due to differential hydrostatic pressures

air locks or voids in grout or cement

grout or cement setting too fast

heat damaging casing

grout or cement not setting or being washed away

Cleaning equipment may include:

pressure cleaning

chemical cleaning

manual cleaning

abrasive mechanical cleaning