| Unit Code |
Unit Title |
| PLB-04 |
Install and Maintain Drainage, Waste & Vent (DWV) Systems |
Nominal Hours: 35
Unit Descriptor:
Covers installation, testing, and maintenance of DWV systems in compliance with codes.
Elements | Performance Criteria
| Elements |
Performance Criteria |
| 1. Plan DWV system installation |
1.1 Interpret plans and codes.
1.2 Select materials and fittings.
1.3 Lay out system for installation. |
| 2. Install DWV systems |
2.1 Cut, join, and fit pipes and fittings.
2.2 Install traps, vents, and cleanouts.
2.3 Ensure correct slope and support. |
| 3. Test and maintain DWV systems |
3.1 Perform leak and flow tests.
3.2 Inspect for blockages or faults.
3.3 Repair or replace components as needed. |
Range of Variables
| Variables |
Range |
| Materials |
PVC, ABS, cast iron, copper, HDPE. |
| Fittings |
Elbows, tees, traps, vents, cleanouts, couplings. |
| Testing |
Air, water, smoke, camera inspection. |
Evidence Guide
| Area |
Details |
| 1. Critical aspects of competency |
Correctly installs, tests, and maintains DWV systems to code. |
| 2. Underpinning knowledge |
DWV principles, materials, installation standards, testing methods. |
| 3. Underpinning Skills |
Pipe cutting/joining, layout, leak testing, repairs. |
| 4. Underpinning attitudes |
Quality focus, compliance, responsibility, safety. |
| 5. Resource Implications |
DWV materials, tools, test equipment, drawings. |
| 6. Methods of Assessment |
Practical demonstration, inspection, questioning, supervisor feedback. |
| 7. Context of Assessment |
Real/simulated site with DWV installation and testing. |
Foundation skills
| Skills |
DESCRIPTION |
| Numeracy |
Measure and calculate slopes and pipe lengths. |
| Problem Solving |
Diagnose and repair system faults. |
| Planning/Organizing |
Sequence installation and testing tasks. |
Target Audience
| Target Audience |
Description |
| Plumbing apprentices, workers |
Individuals installing and maintaining DWV systems. |
Recognition of Prior Learning (RPL)
Pre-Requisit
