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.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

A person who demonstrates competency in this unit must be able to provide evidence of the ability to:

analyse variability and non-conformances

identify, analyse and evaluate information from a variety of sources to identify errors and options for mistake proofing

facilitate implementation of mistake proofing activities that reduce waste

facilitate sustaining the mistake proofing activities.

Context of and specific resources for assessment

Assessment of performance must be undertaken in a workplace using or implementing one or more competitive systems and practices.

Access may be required to:

workplace procedures and plans relevant to work area

specifications and documentation relating to planned, currently being implemented, or implemented changes to work processes and procedures relevant to the assessee

documentation and information in relation to production, waste, overheads and hazard control/management

reports from supervisors/managers

case studies and scenarios to assess responses to contingencies.

Method of assessment

A holistic approach should be taken to the assessment.

Competence in this unit may be assessed by using a combination of the following to generate evidence:

demonstration in the workplace

workplace projects

suitable simulation

case studies/scenarios (particularly for assessment of contingencies, improvement scenarios, and so on)

targeted questioning

reports from supervisors, peers and colleagues (third-party reports)

portfolio of evidence.

In all cases it is expected that practical assessment will be combined with targeted questioning to assess underpinning knowledge.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the oracy, language and literacy capacity of the candidate and the work being performed.

Required skills

Required skills include:

communicating with team or work group members, technical support personnel and other relevant staff

explaining mistake proofing and related concepts

facilitating input of others and encouraging acceptance of changes

analysing and visualising operations in terms of flow and contribution to customer outcomes

solving problems to determine root cause of errors and possible solutions

analysing and interpreting information about errors and mistake proofing options in terms of cost, feasibility, regulations and value to the customer

suggesting design changes to operations and products that eliminate the potential for errors

suggesting mechanisms or procedures that warn of errors where operations cannot be designed to eliminate errors,

Required knowledge

Required knowledge includes:

mistake proofing concepts, including, in priority order:

eliminate the possibility of the error via changes to the process

prevent the error from occurring via physical or virtual barriers

reduce likelihood of the error by encouraging correct action

mitigate the impact of the error if it does occur

understanding of processes undertaken by team

factors in the processes which may cause variability

methods of controlling the variability in the process

mistake proofing methods relevant to the process/product

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.

Competitive systems and practices

Competitive systems and practices may include, but are not limited to:

lean operations

agile operations

preventative and predictive maintenance approaches

monitoring and data gathering systems, such as Systems Control and Data Acquisition (SCADA) software, Enterprise Resource Planning (ERP) systems, Materials Resource Planning (MRP) and proprietary systems

statistical process control systems, including six sigma and three sigma

Just in Time (JIT), kanban and other pull-related operations control systems

supply, value, and demand chain monitoring and analysis

5S

continuous improvement (kaizen)

breakthrough improvement (kaizen blitz)

cause/effect diagrams

overall equipment effectiveness (OEE)

takt time

process mapping

problem solving

run charts

standard procedures

current reality tree

Competitive systems and practices should be interpreted so as to take into account:

the stage of implementation of competitive systems and practices

the size of the enterprise

the work organisation, culture, regulatory environment and the industry sector

Mistake proofing

Mistake proofing is based on the concept of zero defects. The first priority is to eliminate the possibility of an error occurring. However, where this is not feasible mistake proofing can be used to reduce the occurrence of errors and/or to minimise their impact.

Mistake proofing should target an error in the following priority order:

eliminate the possibility of the error via changes to the process

prevent the error from occurring via physical or virtual barriers,

reduce likelihood of the error by encouraging correct action (e.g. through warning systems)

mitigate the impact of the error if it does occur

Mistake proofing is also called error proofing or baka-yoke or poka-yoke

Options for mistake proofing

Factors to consider when prioritising options for mistake proofing will vary according to the process and may include:

success rate in eliminating errors

feasibility

skills required by employees

cost

capacity to reduce waste

Procedures

Procedures may include:

all work instructions

standard operating procedures

formulas/recipes

batch sheet

temporary instructions and similar instructions provided for the operation of the plant

good operating practice as may be defined by industry codes of practice (e.g. good manufacturing practice (GMP) and responsible care)

government regulations

Procedures may be:

written, verbal, computer-based or in some other format