Sri Lanka NVQ L3 Plumber study materials
Sri Lanka NVQ L3 Plumber study resources

Sri Lanka NVQ L3 Plumber study plan

Sri Lanka NVQ L3 Plumber · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Occupational Health, Safety and Environment on Plumbing Sites & Plumbing Tools, Equipment and Materials

  • List the personal protective equipment required for at least six plumbing tasks (pipe threading, solvent welding, hot work, confined-space entry, working at height, excavation) and state the specific hazard each item controls

  • Identify the safety signage, colour codes and warning symbols used on a Sri Lankan construction site and explain what action each demands

  • Demonstrate the safe set-up and pre-use inspection of a pipe wrench, hacksaw, hammer drill and angle grinder, naming the defect that would make each tool unfit for use

  • Describe emergency procedures for electric shock, chemical splash to the eye, and a gas cylinder leak, in the correct sequence of actions

  • Classify plumbing materials (PVC-U, CPVC, PPR, GI, copper, lead-free solder, solvents and primers) by hazard and state the correct storage and handling rule for each

Your checkpoint

A two-page site safety and material-handling checklist covering PPE, tool inspection and chemical storage, written in your own words and usable as a toolbox-talk handout

Week 2

Pipework Fabrication, Jointing and Fixing (Metal and Plastic) & Setting Out, Measuring and Marking for Plumbing Installation

  • Read nominal bore, pressure class and standard markings on GI, PVC-U and PPR pipe and select the correct pipe for a given duty from a supplier catalogue

  • Cut, deburr and thread GI pipe by hand, then assemble a joint with correct thread engagement and PTFE tape direction, checking for squareness

  • Make solvent-welded PVC-U joints using the correct cut, chamfer, clean, prime and cement sequence, and state the cure time before pressure testing

  • Set out a pipe run on a wall using a level, plumb line and marking gauge so that fall, alignment and fixing spacing are correct

  • Calculate pipe lengths and fitting allowances for a simple two-outlet run and produce an accurate cutting list

Your checkpoint

A fabricated and pressure-tested sample assembly (two elbows, one tee, one threaded transition) plus a dimensioned cutting list and a joint-inspection record

Week 3

Pipework Fabrication, Jointing and Fixing (Metal and Plastic) & Above-Ground Drainage, Soil, Waste and Vent Systems

  • Fabricate and fix a soil stack with correct bracket spacing, expansion allowance and penetration detail through a wall or slab

  • Install a P-trap and a branch waste connection with the correct falls for 32 mm, 40 mm and 110 mm pipe

  • Assemble a vent pipe arrangement that protects trap seals, and explain why each trap in the system needs venting

  • Identify and correct at least four common drainage faults (wrong fall, missing trap, s-trapping, undersized vent, solvent-weld gap)

  • Pressure-test and water-test the fabricated drainage section and record the results against the acceptance criteria

Your checkpoint

An installed and tested soil, waste and vent mock-up (stack, branch, trap and vent) with a labelled sketch and a test record showing fall, test pressure or water level, and duration

Week 4

Cold and Hot Water Supply Installation and Testing & Reading and Interpreting Plumbing Drawings, Specifications and Standards

  • Interpret a plumbing drawing set: identify plan, riser diagram, schematic, legend, title block and revision status, and extract pipe sizes and fixture counts from them

  • Trace the cold and hot water route from the main to two fixtures on a riser diagram and mark the valves, non-return fittings and test points

  • Install a cold water supply run with correct isolation valves, drain-down points and support spacing, then pressure-test it and record the result

  • Explain the purpose of a storage tank, float valve, expansion relief and non-return valve in a domestic system, and state where each is required

  • Check a completed installation against the drawing and specification and list every deviation found

Your checkpoint

A marked-up drawing set with the installed route, valve positions and test points highlighted, plus a deviation list of at least five items and a signed pressure-test record

Week 5

Sanitary Fixtures, Fittings and Appliances Installation & Cold and Hot Water Supply Installation and Testing

  • Set out and install a WC suite, washbasin and shower with correct centres, heights, falls and sealing, and connect each to hot, cold and waste

  • Install and adjust a float valve, mixer tap and shower valve so that flow, temperature and shut-off behave correctly

  • Test a hot water installation for leaks and correct operation, including checking the temperature-limiting device and the expansion arrangement

  • Diagnose and correct three fixture-level faults: a running cistern, a leaking tap gland and a slow-draining basin

  • Explain the safe procedure for commissioning a hot water system after installation, including flushing and air removal

Your checkpoint

A commissioning and handover sheet for a bathroom set of three fixtures, listing set-out dimensions, test results, adjustments made and the checks a client should be shown at handover

Week 6

Maintenance, Fault Diagnosis and Repair of Plumbing Systems & Above-Ground Drainage, Soil, Waste and Vent Systems

  • Follow a structured fault-finding sequence (gather symptoms, isolate, test, confirm cause, repair, verify) on at least four simulated plumbing faults

  • Diagnose blockages, leaks, water hammer, low pressure and noisy pipework, and state the most likely cause and the repair method for each

  • Carry out a repair on a failed joint, a damaged pipe section and a faulty valve, then re-test the system and document the work

  • Explain preventive maintenance schedules for tanks, traps, valves and exposed pipework, and the records a maintenance visit should produce

  • Demonstrate the isolation and lock-off procedure before starting a repair on a live water system

Your checkpoint

A fault-diagnosis log of four cases, each with symptoms, tests performed, confirmed cause, repair carried out and post-repair verification result

Week 7

Workplace Communication, Documentation and Professional Practice & Reading and Interpreting Plumbing Drawings, Specifications and Standards

  • Prepare a materials take-off from a drawing for a small installation and match it to a priced supplier list

  • Write a short method statement and risk assessment for one plumbing task, covering sequence, hazards, controls and PPE

  • Complete a job card, a daily progress record and a snag list using clear, factual language and correct units

  • Explain the reporting line and documentation required for an accident, a near miss and a defect found after handover

  • Interpret a specification clause and confirm in writing whether an installed item complies, citing the clause

Your checkpoint

A complete job pack for one small installation: take-off, method statement, risk assessment, job card and snag list, all internally consistent

Week 8

Occupational Health, Safety and Environment on Plumbing Sites & Plumbing Tools, Equipment and Materials & Reading and Interpreting Plumbing Drawings, Specifications and Standards & Setting Out, Measuring and Marking for Plumbing Installation & Pipework Fabrication, Jointing and Fixing (Metal and Plastic) & Cold and Hot Water Supply Installation and Testing & Sanitary Fixtures, Fittings and Appliances Installation & Above-Ground Drainage, Soil, Waste and Vent Systems & Maintenance, Fault Diagnosis and Repair of Plumbing Systems & Workplace Communication, Documentation and Professional Practice

  • Revise every domain using a one-page summary per domain, listing the key rules, dimensions and test criteria you must recall

  • Complete timed practice questions across all domains and review every wrong answer back to the underlying rule

  • Re-perform the two weakest practical skills identified in weeks 1 to 7 and correct the specific errors found

  • Rehearse the safety, testing and documentation sequences aloud so they can be explained without notes

  • Confirm your exam-day logistics, permitted materials and identification requirements

Your checkpoint

A personal revision pack of ten one-page domain summaries plus a scored mock-exam record with a written correction note for every wrong answer

Milestones

Week 2: Fabricate a threaded GI joint and a solvent-welded PVC-U joint unaided, each passing a visual and pressure check, and explain the correct sequence for both without notes

Week 4: Read a riser diagram and plan, extract pipe sizes and fixture counts, install a cold water run to drawing, and pressure-test it with a recorded result

Week 6: Diagnose and repair four faults using the structured sequence, and correctly install and water-test a soil, waste and vent arrangement with correct falls

Week 8: Score at least 75 percent on a full-length timed mock exam across all ten domains, with every incorrect answer traced to the rule it tested