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

A person who demonstrates competency in this unit must be able to measure and analyse noise and vibration and make recommendations for mitigation and protection.

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

Assessors must be satisfied that the candidate can competently and consistently:

determine compliance with WHS and regulatory requirements, and risk management with particular emphasis on automation safety

review physics of sound and vibration, effects of noise, vibration and shock on humans, measuring equipment and mitigation measures

identify noise and vibration, noise dose and vibration exposure limits

select appropriate measuring equipment for measuring task

calibrate, site and set up equipment

correctly measure and record noise and vibration

analyse and interpret measurement results

relate data to plant and equipment performance

recommend noise and vibration elimination, mitigation and protection measures

investigate sustainability implications

report and document results and recommendations

apply systems thinking, continuous improvement problem solving and constraint and contingency management.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, then a simulated working environment must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team.

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

Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.

Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.

Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure correct interpretation and application.

Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.

Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.

Assessment may be in conjunction with assessment of other units of competency where required.

Guidance information for assessment

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

Required skills

Required skills include:

determining parameters and context of noise and vibration measurement and analysis tasks

determining WHS, other regulatory and risk management compliance requirements, including noise and vibration, noise dose and vibration exposure limits

reviewing physics of sound and vibration, effects of noise, vibration and shock on humans, measuring equipment and mitigation measures

selecting equipment

siting, setting up and calibrating equipment prior to use

measuring, analysing, interpreting and recording

relating data to plant and equipment performance

applying systems thinking, continuous improvement problem solving and constraint and contingency management

investigating sustainability implications, developments in acoustic, vibration and shock measurement, condition monitoring in predictive maintenance programs

recording, reporting and documenting results of review, measurement, data, analysis and calculations, interpretations and recommendations

Required knowledge

Required knowledge includes:

characteristics and measurement of noise and vibration, and sources of noise and vibration

noise and vibration concepts and terminology

ISO and other vibration severity standards

limitations of broadband vibration and trend analysis

principles of using vibration analysis as an indicator of machine and equipment condition

causes and effects of vibration and noise in industrial and commercial equipment, such as damaged product, limited processing speeds and catastrophic machine failure

typical engineering components subject to vibration

relevant WHS and regulatory requirements, codes of practice, standards, risk minimisation and registration requirements

calculations, formulae and laws relating to vibration and sound measurement, including allowable exposure using AS 2670 Physiological effects of noise and vibration

range and capacity of equipment for measuring vibration and sound

noise measurement and testing techniques and equipment for various environments and sound characteristics in vibration measurement and testing

acoustic emission in vibration measurement and testing

shock testing, including applications requiring laboratory testing (e.g. anechoic chambers)

vibration trend analysis

noise and vibration concepts (e.g. vibration, noise, transmission of noise and vibration and harmonic excitation)

common sources of noise generation (e.g. fans, motors, engines and ducts)

noise mitigation and protection measures, such as:

isolation

insulation

personal hearing protection

exposure limitation policies

vibration and shock control equipment and techniques

community noise

noise and vibration measurement and analysis applications, such as:

condition monitoring for plant

acoustic emissions for fault detection

modal analysis of dynamic properties of structures or room acoustics

correlation of modal analysis with finite element analysis (FEA)

statistical energy analysis

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.

Sound measuring equipment

Sound measuring equipment may include:

microphones

cables/connectors

meters

recorders

analysers/comper and software

Set-up and measurement techniques

Set-up and measurement techniques may include:

microphone positioning

meter time constants

frequency filter settings

Purpose for sound measurements

Purposes for sound measurements may include:

simple sound level or spectrum

limited or full frequency band

standards to be met

impulsive or consistant noise

Vibration

Vibration refers to continuous or sporadic vibration whether or not associated with noise and also includes mechanical shock

Vibration and shock measuring equipment

Vibration and shock measuring equipment may include:

accelerometer

impedance heads

cables

mounting media

calibrators

preamplifier

meters

filters

recorders

analysers/computer and software

Appropriate technical and professional assistance

Appropriate technical and professional assistance may include:

technical support and advice relating to elements which have intrinsic dangers, such as:

high pressure

energised fluid vessels

high temperatures and heat energy capacity

wiring with high current control voltages above extra low voltage

professional support for technologies, such as:

specialist electric motor drives and controllers

specialist materials, plastics, metal alloys and nano materials

special processes, foundry, alloy welding, heat treatment, sealing and fastening

WHS, regulatory requirements and enterprise procedures

WHS, regulatory requirements and enterprise procedures may include:

WHS Acts and regulations

relevant standards

codes of practice from Australian and overseas engineering and technical associations and societies

risk assessments

registration requirements

safe work practices

state and territory regulatory requirements

Standards and codes

Standards and codes refer to all relevant Australian and International standards and codes applicable to a particular noise and vibration measurement and analysis task

Systems thinking

Systems thinking refers to the conduct of engineering work in a manner that demonstrates knowledge of how the interaction of different technical systems on equipment, machinery or structures, as well as the skills and techniques of personnel, combine to perform or support engineering-related operations, processes or projects. It embraces determining or establishing how the function of each technical system or component, as well as the skills and techniques of personnel, effects or potentially may effect, outcomes. Systems should be interpreted broadly within the context of the organisation and depending on the project or operation can include equipment, related facilities, material, software, internal services and personnel, and other organisations in the value chain

Continuous improvement

Continuous improvement implementation may relate to plant, products, processes, systems or services, including design, development, implementation or manufacture, commissioning, operation or delivery and maintenance.

Improvement processes may include techniques, such as:

balanced scorecard

current and future state mapping

measuring performance against benchmarks

process improvement, problem solving and decision making

data management, generation, recording, analysing, storing and use of software

training for improvement systems participation

technical training

Constraints and contingencies

Constraints and contingencies may be:

financial

organisational, procedural or cultural

physical constraints, such as limits to resources, limits to site access or logistical limitations