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Elements and Performance Criteria

  1. Plan leak detection.
  2. Apply leak-detection process.
  3. Record and report on leak-detection activities.

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.

Basic tests must include at least one of the following:

bucket test

meter test

pump on/pump off test

water loss calculations.

Leak-detection equipment and materials must include:

bucket

communication systems

dye

electronic water loss calculators

hand and power tools

leak-detection equipment:

listening devices

pressure testing

vinyl liner leak detector

personal protective equipment (PPE)

pipe locating equipment

portable pumps.

Related servicesmust include:

electricity

gas

sewerage

stormwater

water supply.


Performance Evidence

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 detect leaks in one swimming pool and one spa.

In doing the above, the person must:

plan leak-detection activities, including conducting basic water loss tests to confirm leaks

operate leak-detection equipment

comply with safety requirements when conducting leak-detection activities

arrange relevant repairs for detected leaks

record and report on leak-detection activities

use personal protective equipment (PPE) required for task.


Knowledge Evidence

A person demonstrating competency in this unit must demonstrate knowledge of:

common structural leak areas:

cracks

lights

main drain and hydrostatic valve

pipe openings into pool

skimmer bond to pool

skimmer throat

tile line

vinyl liners

commonwealth, state or territory, and local government legislation, Australian standards and regulations, and codes of practice impacting on the routine maintenance of swimming pools and spas relating to:

dangerous goods

electrical and plumbing regulations controlling conduct of electrical and plumbing work

environmental protection

environmental health

non-destructive testing

work health and safety (WHS)

private and public swimming pools and spas

waste disposal

leak-detection equipment:

maintenance procedures

operating principles

safety

types

leak-detection procedures

signs of potential pool and spa leaks:

algae growth or discoloration of water

cracks

equipment loses prime

excess chemical usage

excessive water loss

pool deck is sinking or lifting

pool has air in the system

soggy spots around the pool

visible equipment leaks

types of leaks in swimming pools and spas:

plumbing leaks

pressure leaks

static leaks

water loss in swimming pools and spas:

evaporation

planned dilution

plumbing and shell leaks

user splash-out and drag-out