Application
This unit involves the skills and knowledge required to analyse vibration and noise in refrigeration and air conditioning systems. It includes analysing refrigeration and air conditioning system to provide solutions to noise, sound and vibration issues. It also includes working safely, gathering and analysing data, applying problem-solving techniques, and developing and documenting results and solutions for use in design work. No licensing, legislative or certification requirements apply to this unit at the time of publication. |
Elements and Performance Criteria
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. | ||
Work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures for a given work area are identified, obtained and applied | |||
WHS/OHS risk control measures and workplace procedures are followed | |||
Extent of the noise and vibration issue is determined from performance specifications, situation reports and consultations with relevant person/s | |||
Work activities are planned to meet scheduled timelines in consultation with others involved in the work | |||
Effective strategies are formed to ensure solution development and implementation is carried out efficiently | |||
WHS/OHS risk control measures and workplace procedures for carrying out the work are followed | |||
Noise, vibration and thermodynamic analytical solutions are applied to refrigeration and air conditioning system | |||
Parameters, specifications and performance requirements in relation to refrigeration and air conditioning system are obtained in accordance with workplace procedures | |||
Approaches to analysing noise and vibration parameters are carried out to provide the most effective solution | |||
Unplanned events are dealt with safely in accordance with workplace procedures and regulatory requirements in a manner that minimises risk to personnel and equipment | |||
Refrigeration and air conditioning system work quality is monitored against performance agreement and/or workplace or industry standards | |||
Solutions to noise and vibration issues are evaluated to determine their effectiveness and modified, as required, in accordance with workplace procedures | |||
Refrigeration and air conditioning system analysis is documented and includes details of findings calculations and assumptions | |||
Refrigeration and air conditioning system analysis is reported to appropriate person/s to determine appropriate action to be taken based on findings | |||
Justification for findings and any actions to be undertaken in relation to the equipment is documented for inclusion in work/project or development records in accordance with industry standards and workplace procedures | |||
Evidence of Performance
Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include: |
understanding the noise and vibration issues forming effective strategies for analysing refrigeration and air conditioning systems performance obtaining noise and vibration parameters, specifications and performance requirements appropriate to each situation evaluating the results of the analysis documenting analysis details of all findings, calculations and assumptions documenting justification of actions to be implemented in accordance with professional standards dealing with unplanned events applying problem-solving procedures, including using appropriate theorems applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures and practices, including using risk control measures applying sustainable energy principles and practices. |
Evidence of Knowledge
Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of: |
noise and vibration in refrigeration and air conditioning systems, safe working practices and relevant standards, codes and regulations, including: fundamentals of sound: frequency decibels octave bands direct sound velocity sound pressure level sound power level sound meters noise and people: physical measurement of sound weighting networks NR curves noise damage to hearing evaluate daily noise exposures peak noise levels attenuation for hearing protectors excess noise levels permissible noise abatement Acts advanced noise and vibration control sound in confined and unconfined spaces: inverse square laws direct and reflective sound reverberation time Sabine's formula absorption coefficients of surfaces types of absorbers and their operation insulation performances of partitions identification and analysis of problems: one-dimensional sound waves standing waves energy in a sound wave sources effects of air turbulence transmitters amplifiers absorptivity reflectivity room characteristics acoustic design in buildings fan and air noise transmission in ducts methods of control: natural attenuation sound absorbing materials and placement duct lining lined plenums lined duct splitters duct attenuators white noise vibration isolators acoustic specifications: attenuator ratings sound insulation: plant room breakout controlling plant room noise duct borne noise: sound power spectra for fans noise attenuation in ducts and fittings reducing fan noise transmission regeneration noise sources of regenerated noise use tables to estimate regenerative noises breakout situations fan noise breakout list methods of controlling breakout controlling the cost: economical use of attenuation vibration: simple harmonic motion (SHM) period frequency amplitude estimate frequencies for fans, pumps and refrigeration plant estimate transmission of vibration vibration control for building structures use transmissibility graphs to select springs, vibration eliminators and pads types of isolation materials and mounting devices select isolation and mounting devices inertia blocks noise and vibration analysis computer software packages relevant job safety assessments or risk mitigation processes relevant technique, process or measurement methods to obtain sound, noise and vibration data, including problem-solving procedures and appropriate theorems relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace policies and procedures. |
Assessment Conditions
Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment. Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment. Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that replicate workplace conditions. Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate. Resources for assessment must include access to: a range of relevant exercises, case studies and/or other simulations relevant and appropriate materials, tools, equipment and personal protective equipment (PPE) currently used in industry applicable documentation, including workplace procedures, equipment specifications, regulations, codes of practice and operation manuals. |
Foundation Skills
Foundation skills essential to performance are explicit in the performance criteria of this unit of competency. |
Range Statement
Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide. | |
Analysing noise, sounds and vibration must include at least the following: | two different refrigeration and air conditioning systems |
Sectors
Electrotechnology |
Competency Field
Refrigeration and air-conditioning |