Application
This unit of competency specifies the outcomes required to obtain measurements and perform calculations relevant to swimming pool and spa servicing. It includes planning, performing and recording measurements; performing calculations of quantity, area, volume, perimeter, flow rate and time relating to swimming pool and spa servicing; and interpreting graphical representations of mathematical information relating to swimming pools and spas.
The unit supports the work of those engaged in servicing domestic, commercial and public swimming pools and spas. It applies to entry-level swimming pool and spa technicians.
No licensing, legislative, regulatory, or certification requirements apply to this unit of competency at the time of endorsement.
Elements and Performance Criteria
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions. | ||
1. | Perform measurements relating to swimming pool and spa servicing. | 1.1. | Measurement requirements are confirmed. |
1.2. | Preparations for measurement tasks are implemented. | ||
1.3. | Measurements are obtained and confirmed using established work practices, measuring equipment, and personal protective equipment (PPE) to ensure safety and security of self, others and property. | ||
1.4. | Measurements are recorded using correct measurement units. | ||
1.5. | Measurement units are converted as required. | ||
1.6. | Measuring equipment and materials are cleaned, checked for serviceability, calibrated, maintained and stored. | ||
1.7. | Environmental impact of measurement activities is minimised and waste is disposed of in line with enterprise procedures. | ||
2. | Perform calculations relating to swimming pool and spa servicing. | 2.1. | Calculation requirements are confirmed and correct method is selected for achieving required result. |
2.2. | Calculations are performed using online and electronic calculators as required, and results are confirmed and recorded. | ||
2.3. | Results of calculations are interpreted to solve problems relating to swimming pool and spa servicing. | ||
3. | Interpret mathematical information. | 3.1. | Information represented in symbols, diagrams and pictorial representations is recognised and interpreted to complete workplace tasks. |
3.2. | Limitations of swimming pool and spa measurements and calculations, and associated risks, are identified. | ||
Evidence of Performance
A person demonstrating competency in this unit must satisfy the requirements of the elements, performance criteria, foundation skills and range of conditions of this unit.
The person must also:
calculate the area, perimeter and volume of one regular and one irregular shaped swimming pool or spa with sloped pool floors
calculate water loss in one swimming pool or spa
calculate the quantity of pool chemicals required to improve water quality in one swimming pool or spa
calculate flow and turnover rates and time taken to fill and empty one swimming pool or spa.
Evidence of Knowledge
A person demonstrating competency in this unit must demonstrate knowledge of:
calculation methods:
flow rate
limitations
mass
perimeter
quantity
risks
surface area
time
turnover rate
volume
water loss and make-up water
weight
conversion of measurement units:
metric system conversions
metric to imperial measurement unit conversion and vice versa
graphical representations of mathematical information:
diagrams
graphs
symbols
measurements:
hazards, risks and enterprise safety procedures associated with measurements undertaken on site
limitations
measurement-recording procedures
measurement units
need for accuracy of measurements
purpose of measurements
types and function of measuring equipment
swimming pool and spa:
dimensions
pool floor configurations
shapes
water loss in swimming pools and spas:
evaporation
planned dilution:
total dissolved solids (TDS) level
user load
plumbing and shell leaks
user splash-out and drag-out.
Assessment Conditions
The following must be present and available to learners during assessment activities:
equipment:
measuring equipment, including bucket, calculator, measuring flask, scales, stopwatch, tape measure, and ruler, including laser ruler
physical conditions:
assessment activities are performed in the context of servicing a domestic, commercial or public swimming pool or spa.
Assessment activities are performed on an individual basis under general supervision.
Assessor requirements
As a minimum, assessors must satisfy the assessor requirements in the Standards for Registered Training Organisations (RTOs) current at the time of assessment.
Foundation Skills
This section describes the language, literacy, numeracy and employment skills essential to performance in this unit but not explicit in the performance criteria. | |
Skill | Performance feature |
Learning skills to: | maintain up-to-date knowledge of standard measurements and calculations used in servicing swimming pools and spas. |
Numeracy skills to: | perform calculations of quantity, area, volume, perimeter, flow rate and time. |
Oral communication skills to: | ask questions to clarify calculation and measurement requirements. |
Reading skills to: | access and interpret routine text and graphical information required to perform calculations, including area, volume and perimeter calculations. |
Technology skills to: | use online calculators to perform calculations. |
Writing skills to: | record swimming pool and spa chemical stock accurately and legibly in routine workplace documentation. |
Range Statement
This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below. | |
Measurement requirements | flow and turnover rates swimming pool or spa chemical quantities swimming pool or spa dimensions: area perimeter volume temperatures weights. |
Calculation requirements must include: | chemical quantities required to improve water quality: dry liquid flow and turnover rates mass quantity surface area and perimeter of swimming pools and spas: irregular shapes regular shapes time to fill or empty swimming pools or spas volume of swimming pools or spas: constant slope flat bottom multi-depth multi-depth circular water loss and make-up water weight. |
Sectors
Swimming pools and spas